Datasheet

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