National Semiconductor LMH0002 Technical data
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LMH0002
SMPTE 292M / 259M Serial Digital Cable Driver
LMH0002 SMPTE 292M / 259M Serial Digital Cable Driver
January 2006
General Description
The LMH0002 SMPTE 292M / 259M serial digital cable
driver is a monolithic, high-speed cable driver designed for
use in SMPTE 292M / 259M serial digital video and ITU-T
G.703 serial digital data transmission applications. The
LMH0002 drives 75Ω transmission lines (Belden 8281,
Belden 1694A or equivalent) at data rates up to 1.485 Gbps.
The LMH0002 provides two selectable slew rates for
SMPTE 259M and SMPTE 292M compliance. The output
voltage swing is adjustable via a single external resistor.
The LMH0002 is powered from a single 3.3V supply. Power
consumption is typically 125mW in SD mode and 149mW in
HD mode.
Features
n SMPTE 292M, SMPTE 344M and SMPTE 259M
compliant
n Data rates to 1.485 Gbps
n Differential input
n 75Ω differential output
n Selectable slew rate
n Adjustable output amplitude
n Single 3.3V supply operation
n Operating temperature range: Commercial 0˚C to +70˚C
(LMH0002MA) or Industrial −40˚C to +85˚C
(LMH0002TMA)
n Typical power consumption: 125mW in SD mode and
149mW in HD mode
n Replaces the GS1528 and GS1528A
Applications
n SMPTE 292M, SMPTE 344M, and SMPTE 259M serial
digital interfaces
n Sonet/SDH and ATM interfaces
n Digital routers and switches
n Distribution amplifiers
n Buffer applications
n Set top boxes
n Security cameras
Typical Application
20176102
© 2006 National Semiconductor Corporation DS201761 www.national.com
Absolute Maximum Ratings (Note 1)
Supply Voltage: −0.5V to 3.6V
LMH0002
Input Voltage (all inputs) −0.3V to V
Output Current 28mA
Storage Temperature Range −65˚C to +150˚C
Junction Temperature +150˚C
Lead Temperature
(Soldering 4 Sec) +260˚C
Package Thermal Resistance
θ
8-pin SOIC
JA
8-pin SOIC
θ
JC
+0.3V
CC
+125˚C/W
+105˚C/W
ESD Rating (HBM) 5kV
ESD Rating (MM) 250V
Recommended Operating
Conditions
Supply Voltage (VCC–VEE): 3.3V±5%
Operating Free Air Temperature (T
LMH0002MA
LMH0002TMA
)
A
0˚C to +70˚C
−40˚C to +85˚C
DC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Notes 2, 3).
Symbol Parameter Conditions Reference Min Typ Max Units
V
CMIN
V
SDI
V
CMOUT
V
SDO
I
CC
Input Common Mode Voltage SDI, SDI 1.6 +
/2
V
SDI
Input Voltage Swing Differential 100 2000 mV
Output Common Mode Voltage SDO, SDO VCC–
V
SDO
Output Voltage Swing Single-ended, 75Ω load,
= 750Ω 1%
R
REF
Single-ended, 75Ω load,
= 590Ω 1%
R
REF
750 800 850 mV
900 1000 1100 mV
SD/HD Input Voltage Min for SD SD/HD 2.4 V
Max for HD 0.8 V
SD/HD Input Current
3.7 µA
Supply Current SD/HD = 0, (Note 5) 45 49 mA
SD/HD = 1, (Note 5)
38 43 mA
V
–
CC
/2
V
SDI
V
P−P
V
P-P
P-P
AC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Note 3).
Symbol Parameter Conditions Reference Min Typ Max Units
DR
t
jit
tr,t
t
OS
RL
Input Data Rate (Note 4) SDI, SDI 1485 Mbps
SDI
Additive Jitter 1.485 Gbps SDO, SDO 26 ps
270 Mbps 18 ps
Output Rise Time, Fall Time SD/HD = 0, 20% – 80%,
f
(Note 6)
SD/HD = 1, 20% – 80%
400 560 800 ps
120 220 ps
P-P
P-P
Mismatch in Rise/Fall Time (Note 4) 30 ps
Output Overshoot (Note 4) 8 %
Output Return Loss (Note 7) 15 20 dB
SDO
Note 1: "Absolute Maximum Ratings" are those parameter values beyond which the life and operation of the device cannot be guaranteed. The stating herein of
these maximums shall not be construed to imply that the device can or should be operated at or beyond these values. The table of "Electrical Characteristics"
specifies acceptable device operating conditions.
Note 2: Current flow into device pins is defined as positive. Current flow out of device pins is defined as negative. All voltages are stated referenced to V
Note 3: Typical values are stated for V
Note 4: Specification is guaranteed by characterization.
Note 5: Maximum I
Note 6: Specification is guaranteed by characterization and verified by test.
Note 7: Output return loss is dependent on board design. The LMH0002 meets this specification on the SD002 evaluation board from 5MHz to 1.5GHz.
is measured at VCC= +3.465V and TA= +70˚C.
CC
= +3.3V and TA= +25˚C.
CC
= 0 Volts.
EE
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