THS7353_15 Datasheet, PDF (10/57 Pages) Texas Instruments – 3-Channel Low Power Video Buffer with I2C Control, Selectable Filters, External Gain Control, 2:1 Input MUX, and Selectable Input Modes

THS7353
SLOS484B – NOVEMBER 2005 – REVISED AUGUST 2012
PIN CONFIGURATION
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THS7353PW
TSSOP (20-Pin)
(Top View)
NC
CH. 1 - INPUT A
CH. 2 - INPUT A
CH. 3 - INPUT A
CH. 1 - INPUT B
CH. 2 - INPUT B
CH. 3 - INPUT B
I2C-A1
I2C-A0
GND
NC
CH. 1 - OUTPUT
CH. 1 - GAIN ADJ.
CH. 2 - OUTPUT
CH. 2 - GAIN ADJ.
CH. 3 - OUTPUT
CH. 3 - GAIN ADJ.
I2C-SCL
I2C-SDA
V_S+
A. NC indicates there is no internal connection to these pins. It is recommended, but not required, to connect these pins
to GND.
TERMINAL
NAME
N/C
CH. 1 – INPUT A
CH. 2 – INPUT A
CH. 3 – INPUT A
CH. 1 – INPUT B
CH. 2 – INPUT B
CH. 3 – INPUT B
I2C-A1
I2C-A0
GND
V_S+
SDA
SCL
CH. 3 – GAIN ADJ.
CH. 3 – OUTPUT
CH. 2 – GAIN ADJ.
CH. 2 – OUTPUT
CH. 1 – GAIN ADJ.
CH. 1 – OUTPUT
NO.
1, 20
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
TERMINAL FUNCTIONS
DESCRIPTION
No Internal Connection. It is recommended, but not required, to connect these pins to GND
Video Input Channel 1. Input A
Video Input Channel 2. Input A
Video Input Channel 3. Input A
Video Input Channel 1. Input B
Video Input Channel 2. Input B
Video Input Channel 3. Input B
I²C Slave Address Control Bit A1. Connect to Vs+ for a logic 1 preset value or GND for a logic 0 preset value.
I²C Slave Address Control Bit A0. Connect to Vs+ for a logic 1 preset value or GND for a logic 0 preset value.
Ground reference pin for all internal circuitry
Positive Power Supply Input Pin. Connect to 2.7 V to 5 V
Serial data line of the I²C bus. Pull-up resistor should have a minimum value = 2-kΩ and a maximum value =
19-kΩ. Pull up to Vs+
I²C bus clock line. Pull-up resistor should have a minimum value = 2-kΩ and a maximum value = 19-kΩ. Pull
up to Vs+
Channel 3 gain adjustment pin. Short to CH. 3 – OUTPUT pin for 0-dB gain. Or add external resistors and/or
capacitors to analog ground for signal gain.
Video output channel 3 from either CH. 3 – INPUT A or CH. 3 – INPUT B
Channel 2 gain adjustment pin. Short to CH. 2 – OUTPUT pin for 0-dB gain. Or add external resistors and/or
capacitors to analog ground for signal gain.
Video output channel 2 from either CH. 2 – INPUT A or CH. 2 – INPUT B
Channel 1 gain adjustment pin. Short to CH. 1 – OUTPUT pin for 0-dB gain. Or add external resistors and/or
capacitors to analog ground for signal gain.
Video output channel 1 from either CH. 1 – INPUT A or CH. 1 – INPUT B
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