GS1528 Datasheet PDF - Gennum Corporation

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GS1528
Gennum Corporation

Part Number GS1528
Description HD-LINX-TM II Multi-Rate SDI Dual Slew-Rate Cable Driver
Page 13 Pages


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Features
• SMPTE 292M, SMPTE 344M and SMPTE 259M
compliant
• dual coaxial cable driving outputs with selectable
slew rate
• 50Ω differential PECL input
• seamless interface to other HD-LINXII family
products
• Pb-free and RoHS Compliant
• single 3.3V power supply operation
• operating temperature range: 0°C to 70°C
Applications
• SMPTE 292M, SMPTE 344M and SMPTE 259M
Coaxial Cable Serial Digital Interfaces.
GS1528 HD-LINX™ II
Multi-Rate SDI
Dual Slew-Rate Cable Driver
GS1528 Data Sheet
Description
The GS1528 is a second generation high-speed bipolar
integrated circuit designed to drive one or two 75Ω
co-axial cables at data rates up to 1.485Gb/s. The
GS1528 provides two selectable slew rates in order to
achieve compliance to SMPTE 259M, SMPTE 344M
and SMPTE 292M.
The GS1528 accepts a LVPECL level differential input
that may be AC coupled. External biasing resistors at
the inputs are not required.
Power consumption is typically 160mW using a 3.3V
power supply.
This component and all homogeneous subcomponents
are ROHS compliant.
BANDGAP REFERENCE AND BIASING CIRCUIT
RSET
SDI INPUT
DIFFERENTIAL
PAIR
SDI
OUTPUT STAGE &
CONTROL
SDO
SDO
SD/HD
Functional Block Diagram
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Contents
GS1528 Data Sheet
Features ........................................................................................................................1
Applications ...................................................................................................................1
Description ....................................................................................................................1
1. Electrical Characteristics ...........................................................................................3
1.1 Absolute Maximum Ratings ............................................................................3
1.2 DC Electrical Characteristics ..........................................................................3
1.3 AC Electrical Characteristics ...........................................................................4
2. Pin Out ......................................................................................................................5
2.1 Pin Assignment ...............................................................................................5
2.2 Pin Descriptions ..............................................................................................5
2.3 Input/Output Circuits .......................................................................................6
3. Detailed Description ..................................................................................................7
3.1 Input Interfacing ..............................................................................................7
3.2 SD/HD .............................................................................................................7
3.3 Output Interfacing ...........................................................................................7
3.4 Output Return Loss Measurement ..................................................................9
3.5 Output Amplitude Adjustment .......................................................................10
4. Application Information............................................................................................11
4.1 PCB Layout ...................................................................................................11
4.2 Typical Application Cirucit .............................................................................11
5. Package Dimensions ..............................................................................................12
5.1 Ordering Information .....................................................................................12
6. Revision History ......................................................................................................13
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1. Electrical Characteristics
1.1 Absolute Maximum Ratings
TA = 25°C unless otherwise indicated
GS1528 Data Sheet
Parameter
Supply Voltage
Input ESD Voltage
Storage Temperature Range
Input Voltage Range (any input)
Operating Temperature Range
Power Dissipation
Lead Temperature (soldering, 10 sec)
Value
-0.5V to 3.6 VDC
500V
-50°C < Ts < 125°C
-0.3 to (VCC +0.3)V
0°C to 70°C
300mW
260°C
CAUTION The GS1528 is sensitive to electrostatic discharge. Use extreme caution,
observing all ESD-prevention practices, during handling and assembly. The SDI inputs
of the GS1528 must be protected from electrostatic discharge and electrical overstress
during the handling and operation of circuit assemblies
1.2 DC Electrical Characteristics
Table 1-1: DC Electrical Characteristics
VDD = 3.3V, TA = 0°C to 70°C, unless otherwise shown
Parameter
Supply Voltage
Power Consumption
Supply Current
Output Voltage
Input Voltage
SD/HD Input
Conditions Symbol Min
TA = 25°C
TA = 25°C
Common mode
Common mode
VCC
PD
Ιs
VCMOUT
VCMIN
VIH
VIL
3.135
1.6 + ΔVSDI/2
2.4
Typ
3.3
160
48
VCC - VOUT
Max
Units
3.465
V
– mW
– mA
––
VCC - ΔVSDI/2
V
V
0.8 V
Notes Test
Levels
±5%
3
5
1
6
5
7
7
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1.3 AC Electrical Characteristics
GS1528 Data Sheet
Table 1-2: AC Electrical Characteristics
VDD = 3.3V, TA = 0°C to 70°C, unless otherwise shown
Parameter
Conditions
Symbol Min Typ Max
Units
Notes
Test
Levels
Serial input data rate
DRSDO
1.485
Gb/s
2
1
Additive jitter
1.485Gb/s
– 15 –
psp-p
1
270Mb/s
– 25 –
psp-p
1
Rise/Fall time
SD/HD=0
tr, tf – – 220 ps
20% to 80%
1
SD/HD=1
tr, tf
400 –
800
ps
20% to 80%
1
Mismatch in rise/fall
time
Utr, Utf
– 30
ps
1
Duty cycle distortion
– – 30
ps
1
Overshoot
– –8
%
1
Output Return Loss
ORL
15 – –
dB
1
7
Output Voltage Swing
Single Ended
into 75Ω external
load
RSET = 750Ω
VOUT
750 800 850
mVp-p
1
Input Voltage Swing
Differential
UVSDI 300 –
2000
mVp-p
1
TEST LEVELS
1. Production test at room temperature and nominal supply voltage with guardbands for supply and temperature ranges.
2. Production test at room temperature and nominal supply voltage with guardbands for supply and temperature ranges using correlated
test.
3. Production test at room temperature and nominal supply voltage.
4. QA sample test.
5. Calculated result based on Level 1, 2, or 3.
6. Not tested. Guaranteed by design simulations.
7. Not tested. Based on characterization of nominal parts.
8. Not tested. Based on existing design/characterization data of similar product.
9. Indirect test.
NOTES:
1. Tested on CB1528 board from 5MHz to 1.435GHz
2. The input coupling capacitor must be set accordingly for lower data rates.
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