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GS9068A Schematic ( PDF Datasheet ) - Gennum Corporation

Teilenummer GS9068A
Beschreibung HD-LINX-R II Multi-Rate Dual Slew-Rate Cable Driver
Hersteller Gennum Corporation
Logo Gennum Corporation Logo 




Gesamt 16 Seiten
GS9068A Datasheet, Funktion
www.DataSheet4U.com
GS1528A / GS9068A HD-LINX® II
Multi-Rate Dual Slew-Rate Cable Driver
GS1528A / GS9068A Data Sheet
Features
GS1528A
• SMPTE 292M, SMPTE 344M and SMPTE 259M
compliant
• Dual coaxial cable driving outputs with selectable
slew rate
• 50Ω differential PECL input
• Pb-free and RoHS compliant
• Pin compatible with GS9068A HD-LINX II SD SDI
cable driver
• Seamless interface to other HD-LINX II family
products
• Single 3.3V power supply operation
• Operating temperature range: 0°C to 70°C
GS9068A
• SMPTE 259M and SMPTE 344M compliant
• Dual coaxial cable driving outputs
• 50Ω differential PECL input
• Pb-free and RoHS compliant
• Pin compatible with GS1528A HD-LINX II multirate
SDI dual slew-rate cable driver
• Seamless interface to other HD-LINX II family
products
• Single 3.3V power supply operation
• Operating temperature range: 0°C to 70°C
Description
The GS1528A/9068A is a second generation
high-speed BiCMOS integrated circuit designed to drive
one or two 75Ω co-axial cables.
The GS1528A may drive data rates up to 1.485Gb/s
and provides two selectable slew rates in order to
achieve compliance to SMPTE 259M, SMPTE 344M
and SMPTE 292M.
The GS9068A may drive data rates up to 540Mb/s and
will achieve compliance to SMPTE 259M and SMPTE
344M.
The GS1528A/9068A accepts a LVPECL level
differential input that may be AC coupled. External
biasing resistors at the inputs are not required.
Power consumption is typically 168mW using a 3.3V
power supply.
The GS1528A/9068A is Pb-free, and the encapsulation
compound does not contain halogenated flame
retardant.
This component and all homogeneous subcomponents
are RoHS compliant.
Applications
GS1528A
• SMPTE 292M, SMPTE 344M and SMPTE 259M
Coaxial Cable Serial Digital Interfaces.
GS9068A
• SMPTE 259M and SMPTE 344M Coaxial Cable
Serial Digital Interfaces.
30953 - 4 January 2006
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GS9068A Datasheet, Funktion
2.3 AC Electrical Characteristics
GS1528A / GS9068A Data Sheet
VDD = 3.3V, TA = 0°C to 70°C, unless otherwise shown
Parameter
Symbol Conditions
Min
Serial input data rate
Additive jitter
DRSDO
DRSDO
GS1528A
GS9068A
1.485Gb/s
– 270Mb/s
– GS9068A
Rise/Fall time
Mismatch in rise/fall time
Duty cycle distortion
tr, tf
tr, tf
tr, tf
Utr, Utf
SD/HD=0
SD/HD=1
GS9068A
SD/HD=0
SD/HD=1
400
400
Overshoot
– GS9068A
– SD/HD=0
Output Return Loss
ORL
SD/HD=1
GS9068A
15
Output Voltage Swing
VOUT
Single Ended
into 75Ω
external load
RSET = 750Ω
750
Input Voltage Swing
UVSDI
Differential
300
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.
Typ Max
Units
– 1.485
– 540
22 –
16 –
16 –
– 220
– 800
– 800
– 30
– 30
– 100
– 100
– 10
–8
–8
––
800 850
Gb/s
Mb/s
psp-p
psp-p
psp-p
ps
ps
ps
ps
ps
ps
ps
%
%
%
dB
mVp-p
Notes
1
2
2, 3
2, 3
3
2
2
2
2
Test
Levels
1
1
1
4
1
1
1
1
1
1
7
1
7
1
1
7
1
– 2000 mVp-p
7
NOTES:
1. The input coupling capacitor must be set accordingly for lower
data rates.
2. This parameter applies only to the GS1528A.
3. Rise/Fall time measured between 20% and 80%.
30953 - 4 January 2006
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6 Page









GS9068A pdf, datenblatt
GS1528A / GS9068A Data Sheet
5.4 Output Amplitude Adjustment
The output amplitude of the GS1528A/9068A can be adjusted by changing the
value of the RSET resistor as shown in Table 5-1. For an 800mVp-p output with a
nominal ±7% tolerance, a value of 750Ω is required. A ±1% SMT resistor should
be used.
The RSET resistor is part of the high speed output circuit of the GS1528A/9068A.
The resistor should be placed as close as possible to the RSET pin. In addition, the
PCB capacitance should be minimized at this node by removing the PCB
groundplane beneath the RSET resistor and the RSET pin.
Table 5-1: RSET vs VOD
RSET R (Ω)
Output Swing (mVp-p)
995 608
824 734
750 800
680 884
573 1040
NOTE: For reliable operation of the GS1528A/9068A over the full temperature range, do not use an
RSET value below 573Ω.
30953 - 4 January 2006
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