GENLINXTM GS9022A
Digital Video Serializer
FUNCTIONAL BLOCK DIAGRAM
FEATURES
DEVICE DESCRIPTION
The GS9022A is a drop-in replacement for the GS9022 in
existing applications
The GS9022A is a monolithic bipolar integrated circuit designed
to serialize SMPTE 125M and SMPTE 244M bit parallel digital
signals as well as other 8 or 10 bit parallel formats. This device
performs the functions of sync detection, parallel to serial
conversion, data scrambling (using the X9 + X4 +1 algorithm),
10x parallel clock multiplication and conversion of NRZ to
NRZI serial data. The data rate is automatically set for SMPTE
259M data rates to 400 Mb/s. Other features include a lock
detect output and an internal cable driver capable of driving
two 75Ω loads.
The device requires a single +5 volt or -5 volt supply and
typically consumes 650 mW of power while driving two 75Ω
loads. The 28 pin PLCC packaging assures a small footprint
for the complete encoder function.
• built-in 75
W
cable driver with two serial outputs
• standard independent operation
• space saving 28 pin PLCC package
• 650 mW typical power dissipation (data output
driving 75
W
load).
• supports bit rates to 400 Mb/s
• accepts 8 bit and 10 bit TTL and CMOS
compatible parallel data inputs
• fully compatible with SMPTE 259M serial digital
standard
• single +5 or -5 volt supply
• Pb-free and Green
APPLICATIONS
•4ƒ
SC, 4:2:2 and 360 Mb/s serial digital interfaces for:
Video cameras VTRs
Signal generators Portable equipment
DATA SHEET
ORDERING INFORMATION
Revision Date: June 2004 Document No. 18325 - 01
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3 tel. +1 (905) 632-2996 fax. +1 (905) 632-5946
Web Site: www.gennum.com E-mail: info@gennum.com
SYNC
DETECT
DISABLE
GS9022A
PLD
LOOP
FILTER
RVCO
PCLK
PARALLEL
DATA
IN (10 BITS)
P/S
CONVERTER
SYNC
DETECT
REGULATOR CAP
PHASE
FREQUENCY
DETECT
CHARGE
PUMP VCO
INPUT
LATCH
DIV BY 10
GENERATOR
3-12
13
17
28
25
SCLK
LOCK
DETECT
SCRAMBLER
SERIAL DATA
SERIAL DATA
23
22
14
LOCK
DETECT
19
COSC
26
OSCILLATOR
DIV BY 2
GENERATOR
RISE TIME
CONTROL
NRZ
NRZI
MUX
NOT RECOMMENDED FOR NEW DESIGNS SEE GS9032
Part Number Package Temperature
Pb-Free
and Green
GS9022ACPJ 28 pin PLCC o°C to 70°C No
GS9022ACTJ 28 pin PLCC Tape o°C to 70°C No
GS9022ACPJE3
28 pin PLCC o°C to 70°C Yes
GS9022ACTJE3
28 pin PLCC Tape o°C to 70°C Yes
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18325 - 01
NOT RECOMMENDED FOR NEW DESIGNS SEE GS9032
Serial Data Outputs
SDATA, SDATA bit rates BRSDO 100 - 400 Mb/s
signal swing VSDO RL = 75Ω720 800 880 mVp-p
rise/fall times tr, tf(20 - 80%) 400 550 800 ps
jitter tj270 Mb/s 240 - ps p-p Note 1
Lock Time tlock CLoop filt = 0.1µF - 5 - ms Auto Standard
RLoop filt = 3.9kΩ
COSC = 0.1µF
Parallel Data & Clock Inputs
risetime tRTA = 25°C 500 - - ps
setup tSU 3- -ns
hold tHOLD 3- -ns
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS NOTES
Supply Voltage VSOperating Range 4.75 5.0 5.25 V
Power Consumption PDData outputs driving two 75Ω loads - 650 - mW TA = 25°C
Supply Current ISData outputs driving two 75Ω loads - 160 190 mA
TTL Inputs-HIGH VIH TA = 25°C 2.0 - - V
TTL Inputs-LOW VIL TA = 25°C - - 0.8 V
Logic Input Current IIN - 2.5 6.0 µA
TTL Outputs-HIGH VOH TA = 25°C 2.4 - - V
TTL Outputs-LOW VOL TA = 25°C - - 0.5 V
VCC = 5V, VEE = 0V, TA = 0°C to 70°C unless otherwise shown
GS9022A - ENCODER DC ELECTRICAL CHARACTERISTICS
GS9022A - ENCODER AC ELECTRICAL CHARACTERISTICS
VCC = 5V, VEE = 0V, TA = 0°C to 70°C, unless otherwise shown
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS NOTES
ABSOLUTE MAXIMUM RATINGS
PARAMETER VALUE/UNITS
Supply Voltage 5.5 V
Input Voltage Range (any input) -VEE < VI < VCC
DC Input Current (any one input) 10 mA
Power Dissipation (VS = 5.25 V) 910 mW
Operating Temperature Range 0°C
£
TA
£
70°C
Storage Temperature Range -65°C
£
TS
£
150°C
Lead Temperature (soldering 10 seconds) 260°C
PIN CONNECTIONS
PD9 PCK LOCK V
EE
V
CC
LF V
EE
IN DET
PD2
PD3
PD4
PD5
PD6
PD7
PD8
SYNC DET.
DISABLE
V
CCSD
SDO
SDO
V
EE
V
CC
R
VCO
PD1 PD0 V
CC
V
CC
C
REG
V
EE
C
OSC
GS9022A
TOP VIEW
25
24
23
22
21
20
19
5
6
7
8
9
10
11
12 13 14 15 16 17 18
4 3 2 28 27 26
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
Note 1: Measured using PCLK as trigger source on 1 GHz oscilloscope
3 of 7 18325 - 01
NOT RECOMMENDED FOR NEW DESIGNS SEE GS9032
The charge pump delivers a 'charge packet' to the loop filter
which is proportional to the system phase error. Internal
voltage clamps are used to constrain the loop filter voltage
between approximately 1.8 and 3.4 volts.
The VCO, constructed from a current-controlled multivibrator,
features operation in excess of 400 Mb/s and a wide pull
range (≈ ± 40% of centre frequency).
VCO Centre Frequency Selection
The wide VCO pull range allows the PLL to compensate for
variations in device processing, temperature variations and
changes in power supply voltage, without external adjustment.
A single external resistor is used to set the VCO current for all
standards.
The COSC pin is used to configure the VCO of the GS9022A
in one of three modes, as shown below:
COSC Mode
0.1µF to GND Auto Standard
10k Resistor to VCC ƒ/2 ON
10k Resistor to GND ƒ/2 OFF
In auto standard mode, the capacitor sets the sweep rate at
which the VCO toggles between ƒ and ƒ/2.
The ƒ/2 ON and ƒ/2 OFF modes are used to configure the
GS9022A VCO for single standard operation.
The lock detect circuit disables the serial data output when the
loop is not locked. The Lock Detect output is available from pin
14 and is HIGH when the loop is locked.
The true and complement serial data, SDO and SDO are
available from pins 22 and 23. These outputs will drive
two 75 Ω co-axial cables with SMPTE level serial digital
video signals.
Phase Locked Loop
The PLL performs parallel clock multiplication and provides
the timing signal for the serializer. It is composed of
a phase/frequency detector, charge pump, VCO, a
divide-by-ten counter, and a divide by two counter.
The phase/frequency detector allows a wider capture range
and faster lock time than that which can be achieved with a
phase discriminator alone. The discrimination of frequency
also eliminates harmonic locking. With this type of discriminator,
the PLL can be over-damped for good stability without
sacrificing lock time.
The GS9022A Serializer is a bipolar integrated circuit used to
convert parallel data into a serial format according to the
SMPTE 259M standard. The device encodes both eight and
ten bit TTL-compatible parallel signals producing serial data
rates up to 400 Mb/s. It operates from a single five volt supply
and is packaged in a 28 pin PLCC.
Functional blocks within the device include the input latches,
sync detector, parallel to serial converter, scrambler, NRZ to
NRZI converter, internal cable driver, PLL for 10 x parallel
clock multiplication and lock detect.
The parallel data (PD0-PD9) and parallel clock (PCKIN) are
applied via pins 3 through 13 respectively.
Sync Detector
The Sync Detector looks for the reserved words 000-003 and
3FC-3FF, in ten bit hexadecimal, or 00 and FF in eight bit
hexadecimal, used in the TRS-ID sync word. When the
occurrence of either all zeros or all ones at inputs PD2-PD9 is
detected, the lower two bits PD0 and PD1 are forced to zeros
or ones, respectively. This makes the system compatible with
eight or ten bit data. For non - SMPTE standard parallel data,
a logic input, Sync Detect Disable (25) is available to disable
this feature.
Scrambler
The Scrambler is a linear feedback shift register used to
pseudo-randomize the incoming serial data according to the
fixed polynomial (X9+X4+1). This minimizes the DC component
in the output serial data stream. The NRZ to NRZI converter
uses another polynomial (X+1) to convert a long sequence of
ones to a series of transitions, minimizing polarity effects.
GS9022A Digital Video Serializer - Detailed Device Description
≈
4 of 7
18325 - 01
NOT RECOMMENDED FOR NEW DESIGNS SEE GS9032
GS9022A PIN DESCRIPTIONS
PIN NO. SYMBOL TYPE DESCRIPTION
1 V
CC Power Supply: Most positive power supply connection for the PLL and Scrambler.
2 V
CC Power Supply: Most positive power supply connection for the parallel data inputs and P/S
converter.
3-12 PD0-PD9 I TTL level inputs of the parallel data words. PD0 is the LSB and PD9 is the MSB.
13 PCKIN I TTL level input of the parallel clock.
14 LOCK DET O TTL level output which goes high when the internal PLL is locked.
15 VEE Power Supply: Most negative power supply connection.
16 VCC Power Supply: Most positive power supply connection for the PLL and Scrambler.
17 LF I Connection for the R-C loop filter components.
18 VEE Power Supply: Most negative power supply connection.
19 RVCO I VCO frequency setting resistor. A 1% resistor is required.
20 VCC Power Supply: Most positive power supply connection for the PLL and Scrambler.
21 VEE Power Supply: Most negative power supply connection.
22, 23 SDO, SDO I 75 Ω cable driver outputs (true and inverse).
24 VCCSD Power Supply: Most positive power supply for cable driver outputs.
25 SYNC DET TTL level input that disables the internal sync detector when high. This allows the GS9022 to
DISABLE I serialize 8 or 10 bit non-SMPTE standard parallel data.
26 COSC I Toggles VCO between ƒ and ƒ/2.
27 VEE I Power Supply: Most negative power supply connection.
28 CREG I Compensation capacitor for internal voltage regulator that requires decoupling with a
0.1 µF capacitor located as close as possible to the pin in series with an 820 Ω Resistor.
5 of 7 18325 - 01
NOT RECOMMENDED FOR NEW DESIGNS SEE GS9032
INPUT / OUTPUT CIRCUITS
Fig. 3 Output Circuit
Fig. 1 Sync Detect Disable, Parallel Data,
Parallel Clock
V
EE
1k 1k
V
CC
PINS 3-12
13, 25
V
R1
Fig. 2 Lock Detect
Fig. 4 Input Clock / Data Timing
LOCK
DETECT
10k
VEE
VCC
PIN 14
VCC
400 400
V
OUT
PIN 23
VOUT
PIN 22
V
CC
V
CC
tSU tHOLD
tCLKL = tCLKH
PARALLEL
CLOCK
PLCK
50%
PARALLEL
DATA
PDn
6 of 7
18325 - 01
NOT RECOMMENDED FOR NEW DESIGNS SEE GS9032
LOOP FILTER VOLTAGE (V)
Fig. 8 Loop Filter Voltage vs Temperature
TYPICAL PERFORMANCE CURVES (VS = 5V, TA = 25° C unless otherwise shown)
Fig. 7 VCO Frequency vs Loop Filter Voltage
0 10 20 30 40 50 60 70
VCO FREQUENCY (MHz)
TYPICAL LOOP FILTER VOLTAGE (V)
2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4
SERIAL OUTPUT (mV)
Fig. 5 Output Jitter
JITTER p-p (ps)
0 10 20 30 40 50 60 70
AMBIENT TEMPERATURE (°C)
Fig. 6 Serial Data Output Level vs Temperature
DATA RATE (Mbps)
3.1
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
600
550
500
450
400
350
300
250
200
150
100
50
0
400
350
300
250
200
150
100
50
50 100 150 200 250 300 350 400 450
810
800
790
780
770
760
TEMPERATURE (°C)
RVCO =2.2k 360 Mbps
143 Mbps
270 Mbps
ƒ/2 OFF
ƒ/2 ON
177 Mbps
RVCO =2.2k
Auto Standard Mode
RVCO =2.2k
Auto Standard Mode
7 of 7 18325 - 01
NOT RECOMMENDED FOR NEW DESIGNS SEE GS9032
1.0 68
1p8 75
1.0 68
1p8 75
3
4
5
6
7
8
9
10
11
12
13
DATA 0
DATA 1
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 7
DATA 8
DATA 9
CLOCK
15 18 21 27 28 26 19
1 2 16 20 24 14 25
PD 0
PD 1
PD 2
PD 3
PD 4
PD 5
PD 6
PD 7
PD 8
PD 9
PCK IN
5k
100.1
100
100
100
100
100
100
100
100
100
100
100
V
CC
V
CC
V
CC
V
CC
V
CC
V
CCSD
L
O
C
K
D
E
T
E
C
T
S
Y
N
C
D
I
S
SDO
SDO
LF
22
23
17
R
V
C
O
C
O
S
C
C
R
E
G
V
EE
V
EE
V
EE
V
EE
10pF
820Ω
0.1
0.1 0.1
2k2
1%
0.1
3.9k
1M
V
CC
150 150
GS9022A
+
All resistors in ohms, all capacitors in microfarads
unless otherwise stated.
Fig. 9 GS9022A Application Circuit
APPLICATION CIRUIT
Figure 9 shows a typical application circuit of the GS9022A
driving a 75Ω cable.
Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement.
© Copyright May 2001 Gennum Corporation. All rights reserved. Printed in Canada.
DOCUMENT IDENTIFICATION: DATA SHEET
The product is in production. Gennum reserves the right to
make changes at any time to improve reliability, function or
design, in order to provide the best product possible.
REVISION NOTES:
Added lead-free and green information.
For latest product information, visit www.gennum.com
GENNUM CORPORATION
MAILING ADDRESS:
P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3
Tel. +1 (905) 632-2996 Fax +1 (905) 632-2814
SHIPPING ADDRESS:
970 Fraser Drive, Burlington, Ontario, Canada L7L 5P5
GENNUM JAPAN CORPORATION
Shinjuku Green Tower Building 27F 6-14-1, Nishi Shinjuku Shinjuku-ku,
Tokyo 160-0023 Japan Tel: +81 (03) 3349-5501 Fax: +81 (03) 3349-5505
GENNUM UK LIMITED
25 Long Garden Walk, Farnham, Surrey, England GU9 7HX
Tel: +44 (0) 1252 747000 Fax: +44 (0) 1252 726523
