Driver. LMH0002 Datasheet

LMH0002 Datasheet PDF


LMH0002
www.DataSheet4U.com
January 2006
LMH0002
SMPTE 292M / 259M Serial Digital Cable Driver
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 75transmission 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 75differential 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
© 2006 National Semiconductor Corporation DS201761
20176102
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Part LMH0002
Description Digital Cable Driver
Feature LMH0002; www.DataSheet4U.com LMH0002 SMPTE 292M / 259M Serial Digital Cable Driver January 2006 LMH0002 SM.
Manufacture National Semiconductor
Datasheet
Download LMH0002 Datasheet

LMH0002 Datasheet
www.DataSheet4U.com LMH0002 SMPTE 292M / 259M Serial Digita LMH0002 Datasheet





LMH0002
Absolute Maximum Ratings (Note 1)
Supply Voltage:
Input Voltage (all inputs)
Output Current
Storage Temperature Range
Junction Temperature
Lead Temperature
(Soldering 4 Sec)
Package Thermal Resistance
θJA 8-pin SOIC
θJC 8-pin SOIC
−0.5V to 3.6V
−0.3V to VCC+0.3V
28mA
−65˚C to +150˚C
+150˚C
+260˚C
+125˚C/W
+105˚C/W
ESD Rating (HBM)
ESD Rating (MM)
5kV
250V
Recommended Operating
Conditions
Supply Voltage (VCC – VEE):
Operating Free Air Temperature (TA)
LMH0002MA
LMH0002TMA
3.3V ±5%
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
VCMIN Input Common Mode Voltage
VSDI
Input Voltage Swing
VCMOUT Output Common Mode Voltage
Differential
SDI, SDI
SDO, SDO
1.6 +
VSDI/2
100
VSDO Output Voltage Swing
SD/HD Input Voltage
SD/HD Input Current
ICC Supply Current
Single-ended, 75load,
RREF = 7501%
Single-ended, 75load,
RREF = 5901%
Min for SD
Max for HD
SD/HD = 0, (Note 5)
SD/HD = 1, (Note 5)
SD/HD
750
900
2.4
Typ
VCC
VSDO
800
1000
3.7
45
38
Max
VCC
VSDI/2
2000
850
1100
0.8
49
43
Units
V
mVP−P
V
mVP-P
mVP-P
V
V
µA
mA
mA
AC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Note 3).
Symbol Parameter
Conditions
Reference
Min
DRSDI
tjit
Input Data Rate
Additive Jitter
(Note 4)
1.485 Gbps
270 Mbps
SDI, SDI
SDO, SDO
tr,tf
Output Rise Time, Fall Time
SD/HD = 0, 20% – 80%,
(Note 6)
SD/HD = 1, 20% – 80%
400
Mismatch in Rise/Fall Time
(Note 4)
tOS Output Overshoot
RLSDO Output Return Loss
(Note 4)
(Note 7)
15
Typ Max Units
1485 Mbps
26 psP-P
18 psP-P
120 220
ps
560 800
30
8
20
ps
ps
%
dB
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 VEE = 0 Volts.
Note 3: Typical values are stated for VCC = +3.3V and TA = +25˚C.
Note 4: Specification is guaranteed by characterization.
Note 5: Maximum ICC is measured at VCC = +3.465V and TA = +70˚C.
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.
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LMH0002
Connection Diagram
20176101
8-Pin SOIC
Order Number LMH0002MA or LMH0002TMA
See NS Package Number M08A
Pin Descriptions
Pin #
1
2
3
4
5
6
Name
SDI
SDI
VEE
RREF
VCC
SD/HD
7 SDO
8 SDO
Description
Serial data true input.
Serial data complement input.
Negative power supply (ground).
Output driver level control. Connect a resistor to VCC to set output voltage swing.
Positive power supply (+3.3V).
Output slew rate control. Output rise/fall time complies with SMPTE 292M when low and
SMPTE 259M when high.
Serial data complement output.
Serial data true output.
Device Operation
INPUT INTERFACING
The LMH0002 accepts either differential or single-ended
input. The inputs are self-biased, allowing for simple AC or
DC coupling. DC-coupled inputs must be kept within the
specified common-mode range. SDI and SDI are self-biased
at approximately 2.1V with VCC = 3.3V. Figure 1 shows the
differential input stage for SDI and SDI.
20176104
FIGURE 1. Differential Input Stage for SDI and SDI.
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