M21218G-42 - M/A-COM Technology Solutions

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

Visit www.macom.com for additional data sheets and product information.

For further information and support please visit:

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M21208/M21218

SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

Applications

• Serial Routing Switchers, Production/Master Control Switchers

• Distribution Amplifiers

• Video Tape Recorders, ENG Edit decks, Cameras

• Broadcast video applications

• NLE's, MPEG Encoders/Decoders, format convertors etc.

Standards Compliance

• SMPTE 292M, 259M, 344M

The M21208 and M21218 are high-speed, low-power, low-jitter cable drivers. They are designed to drive serial

digital video data through 75Ω coaxial cable typically used in SMPTE and DVB-ASI video applications. The

M21218 cable driver is optimized for performance from 143 Mbps up to 1485 Mbps, it has selectable slew rate for

SD-SDI and HD-SDI applications. The M21208 cable driver is optimized for performance from 143 Mbps up to 540

Mbps with SD-SDI slew rates.

The typical output rise/fall time of the M21218 is 100 ps for HD rates. Both devices have a typical set slew rate of

600 ps at SD rates. The default output voltage swing is compliant with SMPTE 292M, 259M and 344M using a

750Ω ±1% resistor. The M21208 and M21218 are pin compatible, with the exception that the M21208 has no SD/

HD control pin. M21208/M21218 support a maximum single ended output swing of 1600 mVp–p, when configured

appropriately.

Both devices are available in a small outline RoHS compliant package, which is backwards compatible with

standard JEDEC SnPb processes. The M21208 is pin compatible with the GS9068/9068A devices, and the

M21218 is pin compatible with the GS1528/1528A, both support 2.5V and 3.3V operation.

Functional Block Diagram

OUTPUT

BUFFER

RSET

SDI

M21208 /M21218

CABLE DRIVER

INPUT

BUFFER

2.5V - 3.3V and

BIAS CIRCUITRY

SD/HD*

SDO

SDI

* SD/HD on M21218 only

Features

• HD and SD operation (M21218)

• SD operation (M21208)

• Pin compatible to GS9068/9068A (M21208)

• Pin compatible to GS1528/1528A (M21218)

• 800 mVp–p single ended output swing (typical)

• 1600 mVp–p maximum single ended output swing

• SD/HD Slew Rate control (M21218)

• 2.5V or 3.3V supply

• Low PDISS (122 mW @ 2.5V, 144 mW @ 3.3V)

• Extended temperature range: -10 °C to 85 °C

• RoHS package

M21208/M21218

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

Visit www.macom.com for additional data sheets and product information.

For further information and support please visit:

http://www.macom.com/support

SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

Ordering Information

Part Number Data Rates Supported Package Operating Temperature

M21208G-xx* 143–540 Mbps SOIC—8 pin -10 °C to 85 °C

M21218G-xx* 143–1485 Mbps SOIC—8 pin -10 °C to 85 °C

* Consult the MACOM price list for exact part number when ordering.

* The letter “G” designator after the part number indicates that the device is RoHS-compliant. This device is backward compatible with existing 225 °C reflow

profiles.

Revision History

Revision Level Date Description

V4 Release May 2015 Updated logos and page layout. No content changes.

C (V3) Release July 2009 Revised AVDD maximum rating in Table 1-1.

Revised 2.5V to 3.3V minimum termination voltage.

B (V2) Release April 2007 Updated ordering information.

Modified text in Section 2.2.2 to indicate that RSET must be used.

SD/HD changed to pull-up in Table 2-2.

DCD figure changed in Table 1-6 and Table 1 -7 .

A (V1) Release February 2007 Production Release.

Combined M21208 and M21218 data sheets (21208-DSH-001-A and 21218-DSH-002-A).

Changed maximum output swing to 1600 mV.

Removed 1.8V operation.

Updated Tables 2-1, 1-2, 1-3, and 1-7.

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

Visit www.macom.com for additional data sheets and product information.

For further information and support please visit:

http://www.macom.com/support

M21208/M21218

SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

Table of Contents

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.0 Product Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.1 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

1.2 Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

1.3 DC Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

1.4 Input/Output Level Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

1.5 Package Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

1.5.1 Mechanical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.5.1.1 Package Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.0 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.1 General Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

2.2 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

2.2.1 HD-SDI and SD-SDI Slew-rate Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.2.2 Output Amplitude Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.3 Pin Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

2.3.1 High-speed Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.3.2 High-speed Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.3.3 M21208/M21218 Pin List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

A.1 Glossary of Terms/Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

A.2 Reference Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

A.2.1 External . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

Visit www.macom.com for additional data sheets and product information.

For further information and support please visit:

http://www.macom.com/support

M21208/M21218

SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

List of Figures

Figure 1-1. Output Symbols Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 1-2. Package Drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 2-1. Typical Input Circuit—AC Coupled. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 2-2. Typical Input Circuit—DC Coupled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 2-3. Typical Output Matching/Back-termination circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 2-4. M21208 Pin Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 2-5. M21218 Pin Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

Visit www.macom.com for additional data sheets and product information.

For further information and support please visit:

http://www.macom.com/support

M21208/M21218

SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

List of Tables

Table 1-1. Absolute Maximum Ratings (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 1-2. Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 1-3. Power DC Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 1-4. CMOS Input Electrical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 1-5. High-Speed Input Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Table 1-6. Cable Driver Output Electrical Specifications M21208 (SD only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Table 1-7. Cable Driver Output Electrical Specifications M21218 (SD/HD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Table 2-1. Output Swing vs. Supply and Termination Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 2-2. Interface Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 2-3. Power Pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 2-4. High-speed Signal Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table A-1. Glossary and Acronyms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

Visit www.macom.com for additional data sheets and product information.

For further information and support please visit:

http://www.macom.com/support

M21208/M21218

SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

1.0 Product Specification

1.1 Absolute Maximum Ratings

1.2 Recommended Operating Conditions

Table 1-1. Absolute Maximum Ratings (1)

Symbol Parameter Minimum Maximum Units

AVDD I/O Power AVSS - 0.5 3.6 V

VIOAM Voltage on any I/O Pin AVSS - 0.5 AVDD + 0.5 V

TSTORE Storage Temperature -65 +150 °C

ESDHBML Human Body Model (low-speed) 2000 — V

ESDHBMH Human Body Model (high-speed) 2000 — V

ESDCDM Charge Device Model 500 — V

NOTE:

1. Absolute Maximum is the limit beyond which the device life cannot be guaranteed. These limits shall not be construed to imply operational limits. Please

refer to recommended operating conditions when evaluation device performance and functionality.

Table 1-2. Recommended Operating Conditions

Symbol Parameter Notes Minimum Typical Maximum Units

AVDD Device Power 1 — 2.5/3.3 — V

AVSS Device Ground — — 0 — V

TAAmbient Temperature — -10 — +85 °C

θJA Junction to ambient Thermal Resistance — — 110 — °C/W

AVDDTERM 75Ω Output Termination Voltage — See Table 2-1 V

NOTE:

1. ±5% is allowed from nominal supply.

M21208/M21218

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SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

1.3 DC Electrical Specifications

1.4 Input/Output Level Specifications

Table 1-3. Power DC Electrical Specifications

Symbol Parameter Notes Minimum Typical Maximum Units

IDD Supply Current 1, 2 — 27 — mA

IDDTERM Current in external termination resistors 1, 2, 3 — 22 — mA

PDISSINT Power dissipation (AVDD = 2.5V, AVDDTERM = 3.3V) 1, 2, 5 — 122 — mW

PDISSINT Power dissipation (AVDD = 2.5V, AVDDTERM = 5.0V) 1, 2, 5 — 159 — mW

PDISSINT Power dissipation (AVDD = 3.3V, AVDDTERM = 3.3V) 1, 2, 5 — 144 — mW

PDISSINT Power dissipation (AVDD = 3.3V, AVDDTERM = 5.0V) 1, 2, 5 — 181 — mW

PDISSTOT Power dissipation (AVDD = 2.5V, AVDDTERM = 3.3V) 1, 2, 4 — 140 — mW

PDISSTOT Power dissipation (AVDD = 2.5V, AVDDTERM = 5.0V) 1, 2, 4 — 177 — mW

PDISSTOT Power dissipation (AVDD = 3.3V, AVDDTERM = 3.3V) 1, 2, 4 — 162 — mW

PDISSTOT Power dissipation (AVDD = 3.3V, AVDDTERM = 5.0V) 1, 2, 4 — 199 — mW

NOTES:

1. Recommended operating conditions—see Table 1-2.

2. 800 mV standard SMPTE swing, terminated as in Figure 1-3.

3. A portion of the power will be dissipated in the external 75OΩ termination (PEXT = VOD x ITERM).

4. PDISSTOT = AVDD x IDD + AVDDTERM x ITERM.

5. PDISSINT = PDISSTOT - PEXT.

Table 1-4. CMOS Input Electrical Specifications

Symbol Parameter Notes Minimum Typical Maximum Units

VIH Input Logic High Voltage 1 0.75 x AVDD —AV

DD + 0.3 V

VIL Input Logic Low Voltage 1 0 — 0.25 x AVDD V

IIH Input Current (logic High) 1 -100 —100μA

IIL Input Current (logic Low) 1 -100 —100μA

NOTES:

1. Specified at recommended operating condition—see Table 1 -2 .

M21208/M21218

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

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http://www.macom.com/support

SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

Table 1-5. High-Speed Input Electrical Specifications

Symbol Parameter Notes Minimum Typical Maximum Unit

DRIN Input Bit Rate (M21208) 1, 3 0 — 540 Mbps

DRIN Input Bit Rate (M21218) 1, 3 0 — 1485 Mbps

VID Input Differential Voltage (peak to peak) 1, 4, 5 100 — 2000 mV

VCM Input Common-Mode Voltage 1, 2 1200 AVDD —mV

VIH Maximum Input High Voltage 1 — — AVDD + 400 mV

VIL Minimum Input Low Voltage 1 1200 — — mV

RIN Single-ended input impedance 1 — 13.33 20 kΩ

NOTES:

1. Specified at recommended operation conditions—see Table 1-2.

2. Part is DC coupled from input to output.

3. Example 1200 mVpp differential = 600 mVpp for each single-ended terminal.

4. Minimum input level defined as error free operation at 1 x 10-12 BER.

M21208/M21218

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SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

Table 1-6. Cable Driver Output Electrical Specifications M21208 (SD only)

Symbol Parameter Notes Minimum Typical Maximum Unit

DROUT Output Bit Rates 1, 5 — — 540 Mbps

tr/tfSD Rise/Fall Time (20–80%) 1, 3 400 600 800 ps

tr/tfMM Rise/fall mismatch 1, 2 — 40 100 ps

VOD Single-ended voltage swing range (sw) p–p 1, 2, 4, 5 500 800 1600 mV

VODTOL Swing Level output variation at 800 mVp–p

[RSET = 750Ω ±1%] (Single-Ended)

1, 2, 3 -7 — +7 %

VOS Overshoot/Undershoot 1, 2 -8 — +8 %

JAOPP Additive Output Jitter 1, 8 — 40 60 ps

DCD Duty Cycle Distortion 1, 2, 6, 8 — 20 70 ps

S22 Output Return Loss (5 MHz to 600MHz) 1, 2, 7 15 — — dB

NOTES:

Entire table tested with a 400 mVp–p differential input.

1. Specified at recommended operating condition—see Table 1-2 .

2. Specification verified at 800 mVpp output with 1m cable.

3. Rated at nominal SMPTE 800 mV output swing level (using a 750Ω ±1% resistor at RSET).

4. Output stage is an open collector differential pair, actual swing dependant on IC supply voltage and external termination voltage.

5. Into 75Ω back termination and 75Ω load and appropriate external termination voltage.

6. Duty Cycle Distortion (DCD) is defined as the difference in the intrinsic jitter at the 50% voltage level and the intrinsic jitter at the rising/falling edge crossing

point. If the rising/falling edge crossing point is at the 50% voltage level, then DCD = 0.

7. Measured under DC conditions that simulate AC coupling, VT = 3.3V.

8. Measured using a “1010” data pattern.

Table 1-7. Cable Driver Output Electrical Specifications M21218 (SD/HD) (1 of 2)

Symbol Parameter Notes Minimum Typical Maximum Unit

DROUT Output Bit Rates 1 — — 1485 Mbps

tr/tfSD Rise/Fall Time (20–80%) 1, 3 400 600 800 ps

HD Rise/Fall Time (20–80%) 1, 3 — 100 180 ps

tr/tfMM Rise/fall mismatch (HD Rate) 1, 2 — 10 30 ps

Rise/fall mismatch (SD Rate) 1, 2 — 40 100 ps

VOD Single-ended voltage swing range (sw) p–p 1, 2, 4, 5 500 800 1600 mV

VODTOL Swing Level output variation at 800 mVp–p

[RSET = 750Ω ±1%] (Single-Ended)

1, 2, 3 -7 — +7 %

VOS Overshoot/Undershoot 1, 2 -8 — +8 %

JAOPP Additive Output Jitter (HD rate 1010 pattern) 1, 8 — 20 30 ps

Additive Output Jitter (SD rate 1010 pattern) 1, 8 — 40 60 ps

M21208/M21218

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

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SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

DCDODuty Cycle Distortion (HD Rate) 1, 2, 6, 8 — 15 30 ps

Duty Cycle Distortion (SD Rate) 1, 2, 6, 8 — 20 70 ps

S22 Output Return Loss (5 MHz to 1.5 GHz) 1, 2, 7 15 — — dB

NOTES:

1. Entire table specified at recommended operating condition with 400 mVp–p differential input—see Table 1 -2 .

2. Specification verified at 800 mVpp output with 1m cable on MACOM test board. System results may vary.

3. Rated at nominal SMPTE 800 mV output swing level (using a 750Ω ±1% resistor at RSET).

4. Output stage is an open collector differential pair, actual swing dependant on IC supply voltage and external termination voltage.

5. Into 75Ω back termination and 75Ω load and appropriate external termination voltage.

6. Duty Cycle Distortion (DCD) is defined as the difference in the intrinsic jitter at the 50% voltage level and the intrinsic jitter at the rising/falling edge crossing

point. If the rising/falling edge crossing point is at the 50% voltage level, then DCD = 0.

7. Measured under DC conditions that simulate AC coupling, VT = 3.3V.

8. Measured using a “1010” data pattern.

Table 1-7. Cable Driver Output Electrical Specifications M21218 (SD/HD) (2 of 2)

Symbol Parameter Notes Minimum Typical Maximum Unit

M21208/M21218

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

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SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

Figure 1-1. Output Symbols Definition

VOD

trtf

VOH

VOL

JOPP

VOH: Average voltage high level

VOL: Average voltage low level

VOD: (VOH) – (VOL)

VOCM: Common Mode Voltage

JOPP: Output Jitter Peak-Peak

tr: 20-80% Rise Time

tf: 80-20% Fall Time

VOCM

NOTE: Waveform above is differential.

M21208/M21218

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SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

1.5 Package Specification

1.5.1 Mechanical Description

1.5.1.1 Package Information

The M21218 is available in a 8 pin, RoHS compliant, SOIC package. The package drawing is shown in Figure 1-2.

Figure 1-2. Package Drawing

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M21208/M21218

SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

2.0 Functional Description

2.1 General Nomenclature

Through out this data sheet, physical pins will be denoted in BOLD print.

2.2 Features

2.2.1 HD-SDI and SD-SDI Slew-rate Selection

The output slew rate of the M21218 is selectable to conform with the different SD-SDI and HD-SDI specifications.

With SD/HD = Low, the high-definition (1485 Mbps) slew rate is typically 100 ps. The slew rate will vary depending

on the output matching network and BNC connector used.

With SD/HD = High, for standard definition (143 to 540 Mbps) applications, the slew rate is typically 600 ps, which

is compliant with SMPTE 259M and SMPTE 344M. The M21208 has no control over slew rate; this is set at the SD

requirement.

2.2.2 Output Amplitude Adjustment

For SMPTE compliance, an external 750Ω ±1% resistor at RSET to AVDD is recommended for a swing level of 800

mV within a tolerance that is less than ±7%. The output amplitude can also be adjusted to range from 500 to 1600

mV using the following formula:

Output Swing = (600 / RSET) mVp–p [RSET in kΩ] (in mVpp, single-ended)

The actual swing is set as a function of the IC supply voltage and external termination voltage as shown in

Tab le 2 -1 . For a 3.3V minimum termination voltage, the IC can be SMPTE compliant for all supply voltages. In

applications where a lossy matching or splitting networks are used, the M21208/M21218 offers additional gain for

up to 1600 mV output swings, so the output after the lossy network can be SMPTE compliant. For single-supply

3.3V operation, the swing range is compatible with the GS9068/GS9068A and GS1528/1528A.

Table 2-1. Output Swing vs. Supply and Termination Voltage

AVDD (V) AVDDTERM (V)* Maximum Swing

(Single-ended mVp–p)

Minimum Swing

(Single-ended mVp–p)

2.5–3.3V 3.3V 1200 mV 500 mV

2.5–3.3V 5.0V 1600 mV 500 mV

* ±5% tolerance allowed for AVDDTERM.

M21208/M21218

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SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

2.3 Pin Definitions

2.3.1 High-speed Inputs

The M21208/M21218 are designed to be operated with input signals as low as 100 mV or up to 2000 mV

differential peak to peak. The M21218 requires external termination resistors to minimize high-speed reflections.

The M21208 and M21218 are designed as pin compatible replacements to the GS9068/9068A and GS1528/1528A

cable drivers, respectively, and the recommended input circuits are shown in Figure 2-1 and 2-2.

Figure 2-1. Typical Input Circuit—AC Coupled

Figure 2-2. Typical Input Circuit—DC Coupled

M21208

M21218

Tx Device

DDI

DDO

100 Ω

4.7

M21208

M21218

Tx Device

PCML Output Stage Connected to

Same AVDD as Cable Driver

DDI

DDO

100 Ω

M21208/M21218

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SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

2.3.2 High-speed Outputs

The M21208/M21218 output buffer is an open collector buffer that is designed for typical return loss of 15dB using

standard through-hole BNC connectors as typically employed with the GS9068/GS1528 series recommended

back-termination and matching circuit as shown in Figure 2-3. The Output Return Loss (ORL) may be further

optimized by using a different output matching network or component values and may vary with PCB layout or

component selection. The output return loss of the M21208/M21218 is measured while forcing the outputs to a DC

high or low state. Under normal operating conditions, the outputs of the M21208/M21218 will not be held to a static

high or low state, so the measured output return loss will not represent the actual output return loss under normal

operating conditions. To estimate the output return loss performance under typical operating conditions, an

interpolation can be performed on the measured values for the output high condition and output low condition. The

equations used for the interpolation are as follows:

RcH = RmH - (RmH - RmL) / 4 and

RcL = RmL + (RmH - RmL) / 4

RcH = Corrected ORL with output high

RcL = Corrected ORL with output low

RmH = Measured ORL with output stuck high

RmL = Measured ORL with output stuck low

Figure 2-3. Typical Output Matching/Back-termination circuit

4.7 nH

OSD

BNC

4.7uF

10nF

BNC

OSD

4.7 nH

4.7uF

75Ω

AV DDTERM

M21208

M21218

AVDD

IDD

ITERM

M21208/M21218

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SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

2.3.3 M21208/M21218 Pin List

Table 2-2. Interface Pins

Pin Name Function Default Type

SD/HD

(M21218 only)

Input control signal to change the output slew rate.

SD/HD = High: Slow output slew rate for SD-SDI rate (143–540 Mbps).

SD/HD = Low: Fast output slew rate for HD-SDI rate (1485 Mbps) [Default].

Pull-up I—CMOS

RSET Input control signal for setting the single-ended output swing amplitude.

Terminal floating results in 800 mVpp ± 15% swing.

Higher output swing levels or reduced variations with a ±1% tolerance external

resistor.

For 800 mVpp single-ended, a 750Ω ±1% resistor to AVDD is recommended.

— Analog Input

NOTE:

Internal pull-down is 100 kΩ.

Table 2-3. Power Pins

Pin Name Function Type

AVSS Chip Ground Power

AVDD Positive Supply Power

Table 2-4. High-speed Signal Pins

Pin Name Function Default Type

SDI/SDI Non-inverting and Inverting serial unterminated inputs. — I—High-speed

SDO/SDO Non-inverting and inverting serial unterminated data outputs to coaxial cable. — O—High-speed

M21208/M21218

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SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

Figure 2-4. M21208 Pin Out

Figure 2-5. M21218 Pin Out

M21208

Cable

Driver

SDI

RSET

SDO

SDI SDO

M21218

Cable

Driver

SDI

RSET

SDO

SDI SDO

SD/HD

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M21208/M21218

SD and HD/SD-SDI Digital Video Cable Drivers Rev V4

Appendix

A.1 Glossary of Terms/Acronyms

A.2 Reference Documents

A.2.1 External

Society of Motion Picture and Television Engineers

SMPTE 292M Bit—Serial Digital Interface for High-Definition Television Systems

SMPTE 259M 10—Bit 4:2:2 Component and 4fSC Composite Digital Signals—Serial Digital Interface

SMPTE 344M 540Mb/s Serial Digital Interface

DVB Digital Video Broadcast (ASI)

Table A-1. Glossary and Acronyms

DTV Digital Television

DVB Digital Video Broadcast

EQ Equalizer or Equalization

HD High Definition

SD Standard Definition

SDI Serial Digital Interface

SMPTE Society of Motion Picture and Television Engineers

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Information in this document is provided in connection with M/A-COM Technology Solutions Inc ("MACOM")

products. These materials are provided by MACOM as a service to its customers and may be used for

informational purposes only. Except as provided in MACOM's Terms and Conditions of Sale for such products or

in any separate agreement related to this document, MACOM assumes no liability whatsoever. MACOM assumes

no responsibility for errors or omissions in these materials. MACOM may make changes to specifications and

product descriptions at any time, without notice. MACOM makes no commitment to update the information and

shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to its

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WHICH MAY RESULT FROM THE USE OF THESE MATERIALS.

MACOM products are not intended for use in medical, lifesaving or life sustaining applications. MACOM customers

using or selling MACOM products for use in such applications do so at their own risk and agree to fully indemnify

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M21208/M21218

SD and HD/SD-SDI Digital Video Cable Drivers Rev V4