HMC955LC4B - Hittite Microwave Corporation

For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

MUX & DEMUX - SMT

HMC955LC4B

v00.0511

32 Gbps, 1:2 DEMUX

WITH PROGRAMMABLE OUTPUT VOLTAGE

The HMC955LC4B is a 1 to 2 Demux designed to

support data transmission rates up to 32 Gbps. The

demux uses both rising and falling edges of the half-rate

clock to sample the data in sequence 01-02 and latches

the data on the rising edge into the differential outputs.

The demux also has high-speed clock synchronous

invert input that allows for scrambling of the data. The

HMC955LC4B also features an output level control pin,

VR, which allows for loss compensation or for signal-

level optimization.

All differential inputs to the HMC955LC4B are CML

and terminated on-chip with 50 Ohms to the positive

supply, GND, and may be AC or DC coupled. The

differential CML outputs are source terminated to 50

Ohms and may also be AC or DC coupled. Outputs can

be connected directly to a 50 Ohm ground-terminated

system or drive devices with CML logic input. The

HMC955LC4B operates from a single -3.3 V supply

and is available in a ceramic ROHS-compliant 4x4 mm

SMT package.

General Description

Features

Functional Diagram

Supports Data Rates up to 32 Gbps

660 mW Power Consumption

-3.3 V or +3.3 V Operation is Available

Supports Single-Ended and Differential Operation

24 Lead Ceramic 4x4 mm SMT Package: 16 mm2

Invert Port Allows Scrambling for SERDES

Application

Typical Applications

The HMC955LC4B is ideal for:

• SONET OC-192

• Broadband Test & Measurement Equipment

• FPGA Interfacing Circuitry

• 16 G and 32 G Fiber Channel

• 100 Gbit Ethernet

• ADC Encoder

Parameter Conditions Min. Typ. Max Units

Power Supply Voltage (Vee) -3.6 -3.3 -3.0 V

Power Supply Current 200 mA

Maximum Data Rate 32 Gbps

Maximum Clock Rate 16 GHz

Input Voltage Range, C and DIN -1.5 0.5 V

Input Differential Range, C and DIN 0.1 2.0 Vp-p

Data Input Return Loss Frequency <26 Gbps 10 dB

Clock Input Return Loss Frequency <16 GHz 10 dB

Invert Input Return Loss Frequency <16 GHz 10 dB

Electrical Specications, TA = +25 ºC, Vee = -3.3 V, VR = 0 V

For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

MUX & DEMUX - SMT

HMC955LC4B

v00.0511

32 Gbps, 1:2 DEMUX

WITH PROGRAMMABLE OUTPUT VOLTAGE

Parameter Conditions Min. Typ. Max Units

Output Amplitude Single-Ended, peak-to-peak 500 mVp-p

Differential, peak-to-peak 1000 mVp-p

Output High Voltage -25 mV

Output Low Voltage -525 mV

Output Rise / Fall Time Single-Ended, 20% - 80% 19 ps

Output Return Loss Frequency <26 Gbps 10 dB

Random Jitter JRrms [1] <0.2 ps rms

VR Pin Current VR = 0.0 V 3 mA

Deterministic Jitter, JDδ - δ, 27-1 PRBS input [1] <3 ps

Propagation Delay, tcpd Rising Edge 119 ps

Data Setup Time, ts1ps

Data Hold Time, th7ps

Invert Setup Time, tis 0ps

Invert Hold Time, tih 11 ps

[1] Jitter captured at 13 Gbps, 27-1 PRBS input.

[1] VR = 0.0 V [2] Frequency = 16 Gbps [3] Vee = -3.3 V

Electrical Specications (continued)

DC Current vs. Supply Voltage [1][2] DC Current vs. VR [2][3]

150

175

200

225

250

-1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4

+25C

+85C

-40C

DC CURRENT (mA)

VR (V)

140

160

180

200

220

240

260

-3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.1 -3 -2.9

+25C

+85C

-40C

DC CURRENT (mA)

SUPPLY VOLTAGE (V)

For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

MUX & DEMUX - SMT

HMC955LC4B

v00.0511

32 Gbps, 1:2 DEMUX

WITH PROGRAMMABLE OUTPUT VOLTAGE

[1] VR = 0.0V [2] Frequency = 16 Gbps output [3] Device measured on evaluation board with gating after connector

[4] Vee = -3.3 V

Rise / Fall Time vs. VR [2][4]

Rise / Fall Time vs. Supply Voltage [1][2]

Clock Input Return Loss vs.

Frequency [1][3][4]

-3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.1 -3 -2.9

RISE/FALL TIME (ps)

SUPPLY VOLTAGE (V)

-1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4

RISE/FALL TIME (ps)

SUPPLY VOLTAGE (V)

-40

-35

-30

-25

-20

-15

-10

-5

0 3 6 9 12 15 18 21 24 27

Device

Eval Board

RETURN LOSS (dB)

FREQUENCY (GHz)

-40

-35

-30

-25

-20

-15

-10

-5

0 3 6 9 12 15 18 21 24 27

Device

Eval Board

RETURN LOSS (dB)

FREQUENCY (GHz)

Output Differential vs. VR [2][4]

Data Output Differential vs.

Supply Voltage [1][2]

500

600

700

800

900

1000

1100

1200

1300

1400

1500

-3.7 -3.6 -3.5 -3.4 -3.3 -3.2 -3.1 -3 -2.9

+25C

+85C

-40C

VOUT DIFFERENTIAL (mVp-p)

SUPPLY VOLTAGE (V)

400

500

600

700

800

900

1000

1100

1200

1300

1400

-1.2 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4

+25C

+85C

-40C

VOUT DIFFERENTIAL (mVp-p)

VR (V)

Data Output Return Loss vs.

Frequency [1][3][4]

For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

MUX & DEMUX - SMT

HMC955LC4B

v00.0511

32 Gbps, 1:2 DEMUX

WITH PROGRAMMABLE OUTPUT VOLTAGE

Eye Diagram, 16 Gbps

[1] Test Conditions:

Single-ended 200 mV, 32 Gbps data input;16 GHz clock input

Pattern generated with a 27-1 quasi PN, 32 Gbps PRBS pattern

Resulting in 16 Gbps, 27-1 quasi PN output measured with

Tektronix CSA 8000

Timing Diagram

Data Input Return Loss vs.

Frequency [1][3][4]

-40

-35

-30

-25

-20

-15

-10

-5

0 3 6 9 12 15 18 21 24 27

Device

Eval Board

RETURN LOSS (dB)

FREQUENCY (GHz)

Invert Input Return Loss vs.

Frequency [1][3][4]

-40

-35

-30

-25

-20

-15

-10

-5

0 3 6 9 12 15 18 21 24 27

Device

Eval Board

RETURN LOSS (dB)

FREQUENCY (GHz)

For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

MUX & DEMUX - SMT

HMC955LC4B

v00.0511

32 Gbps, 1:2 DEMUX

WITH PROGRAMMABLE OUTPUT VOLTAGE

Absolute Maximum Ratings

ELECTROSTATIC SENSITIVE DEVICE

OBSERVE HANDLING PRECAUTIONS

Outline Drawing

Power Supply Voltage (Vee) -3.75 V to +0.5 V

Input Signals -2 V to +0.5 V

Output Signals -1.5 V to +1 V

Junction Temperature 125 °C

Continuous Pdiss (T=85 °C)

(derate 30 mW/°C above 85 °C 1.22 W

Thermal Resistance (Rth j-p)

Worse case junction to package

paddle

32.8 °C/W

Storage Temperature -65 °C to +150 °C

Operating Temperature -40 °C to +85 °C

ESD Sensitivity (HBM) Class 1B

NOTES:

1. PACKAGE BODY MATERIAL: ALUMINA

2. LEAD AND GROUND PADDLE PLATING:

30-80 MICROINCHES GOLD OVER 50 MICROINCHES MINIMUM NICKEL.

3. DIMENSIONS ARE IN INCHES [MILLIMETERS].

4. LEAD SPACING TOLERANCE IS NON-CUMULATIVE.

5. PACKAGE WARP SHALL NOT EXCEED 0.05 mm DATUM -C-

6. ALL GROUND LEADS MUST BE SOLDERED TO PCB RF GROUND.

7. EXPOSED PADDLE MUST BE SOLDERED TO VEE

For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

MUX & DEMUX - SMT

HMC955LC4B

v00.0511

32 Gbps, 1:2 DEMUX

WITH PROGRAMMABLE OUTPUT VOLTAGE

Pin Number Function Description Interface Schematic

1, 6, 8, 11, 13, 18 GND Signal Grounds

2, 3

4, 5

9, 10

D P, D N

C P, C N

IP, I N

Differential Data Inputs: Current Mode Logic (CML)

referenced to positive supply.

7, 12, 22 N/C

The pins are not connected internally; however, all data

shown herein was measured with these pins connected to

RF/DC ground externally.

14, 15

16, 17

O2N, O2P

O1N, O1P

Differential Outputs: Current Mode Logic (CML) referenced

to positive supply

19, 24 GND Supply Grounds

20, 23

Package Base Vee These pins and the exposed paddle must be

connected to the negative voltage supply.

21 VR

Output level control. Output level may be increased

or decreased by applying a voltage to VR per “Output

Differential vs. VR” plot.

Pin Descriptions

For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

MUX & DEMUX - SMT

HMC955LC4B

v00.0511

32 Gbps, 1:2 DEMUX

WITH PROGRAMMABLE OUTPUT VOLTAGE

The circuit board used in the application should use

RF circuit design techniques. Signal lines should

have 50 Ohm impedance while the package gro-

und leads should be connected directly to the

ground plane similar to that shown. The exposed

packaged base should be connected to Vee. A

sufficient number of via holes should be used to

connect the top and bottom ground planes. The

evaluation circuit board shown is available from

Hittite upon request. Install jumper on JP1 to short

VR to GND for normal operation.

List of Materials for

Evaluation PCB EVAL01-HMC955LC4B [1]

Item Description

J1 - J10 PCB Mount 2.92 mm RF Connectors

J15 - J18 DC Pin

JP1 0.1” Header with Shorting Jumper

C1, C2 4.7 µF Capacitor, Tantalum

C3 - C5 330 pF, Capacitor, 0603 Pkg

R1 10 Ohm Resistor, 0603 Pkg.

U1 HMC955LC4B

High Speed Logic, 1:2 Demux

PCB [2] 126570 Evaluation Board

[1] Reference this number when ordering complete evaluation PCB

[2] Circuit Board Material: Arlon 25FR or Rogers 4350

Evaluation PCB

For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

MUX & DEMUX - SMT

HMC955LC4B

v00.0511

32 Gbps, 1:2 DEMUX

WITH PROGRAMMABLE OUTPUT VOLTAGE

Application Circuit