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TSH173IDT

P1-P3P4-P6P7-P9P10-P12P13-P13
March 2007 Rev 1 1/13
13
TSH173
Triple video buffer with filter for SD video
Features
■ 4.5V to 5.5V single supply operation
■ R-G-B, Y-Pb-Pr, Y-C-CVBS driving
■ 3 channels with 6dB gain buffer
■ 3 video reconstruction filters for SD
■ 3 internal input DC level shifter
■ No input capacitor is required
■ Very low harmonic distortion
■ Each output can drive AC- or DC-coupled
150Ω loads
■ Tested on 5V power supply
■ Data min. and max. are tested during
production
Applications
■ Set top boxes
■ DVD players/recorders
■ High-end video systems
■ Standard definition TV (SD)
■ Multimedia products
Description
The TSH173 is a single supply triple video buffer
featuring an internal gain of 6dB and an internal
low pass filter of 8.2MHz cut-off frequency for
each channel to fit with Standard Definition
requirements for video line interfaces.
Another advantage of the TSH173 is its input DC
level shifter to drive the video signal on a 75Ω
video line without any damage to the
synchronization tip, while using a single 5V power
supply with no input capacitor. The DC level
shifter is internally fixed and optimized to keep the
output video signal between low and high output
rails in the best position to improve linearity.
This datasheet gives technical information on
using the TSH173 as a R-G-B, Y-Pb-Pr, or Y-C-
C
VBS driver for video DAC outputs on a video line.
The TSH173 is available in SO8 plastic package.
OUT2
1
IN2
OUT1
+Vcc
2
3
7
8
OUT3
IN1
4
6
GND
SO8
5
DC Shifter
6dB
6dB
8.2MHz
5
th
order
6dB
IN3
8.2MHz
5
th
order
8.2MHz
5
th
order
Pin connections (top view)
www.st.com
Contents TSH173
2/13
Contents
1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1 Synchronization tip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Power supply considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Using the TSH173 to drive video components . . . . . . . . . . . . . . . . . . . 10
5 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
TSH173 Absolute maximum ratings
3/13
1 Absolute maximum ratings
2 Operating conditions
Table 1. Absolute maximum ratings
Symbol Parameter Value Unit
V
CC
Supply voltage
(1)
1. All voltage values, except differential voltage, are with respect to network terminal.
6V
T
oper
Operating free air temperature range -40 to +85 °C
T
stg
Storage temperature -65 to +150 °C
T
j
Maximum junction temperature 150 °C
R
thjc
SO8 thermal resistance junction to case 28 °C/W
R
thja
SO8 thermal resistance junction to ambient area 157 °C/W
P
max.
Maximum power dissipation (@T
amb
=25°C) for
T
j
=150°C
800 mW
ESD
CDM: charged device model
HBM: human body model
MM: machine model
1.5
2
200
kV
kV
V
Output short-circuit
(2)
2. An output current limitation protects the circuit from transient currents. Short-circuits can cause excessive
heating. Destructive dissipation can result from short-circuits on amplifiers.
Table 2. Operating conditions
Symbol Parameter Value Unit
V
CC
Power supply voltage 4.5 to 5.5
(1)
1. Tested in full production at 0V/5V single power supply.
V
P1-P3P4-P6P7-P9P10-P12P13-P13

TSH173IDT

Mfr. #:
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Manufacturer:
STMicroelectronics
Description:
Video Amplifiers Triple Video Buffer
Lifecycle:
New from this manufacturer.
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