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SBAS314A − APRIL 2004 − REVISED SEPTEMBER 2004
PIN ASSIGNMENTS
PW PACKAGE
TSSOP-14
(TOP VIEW)
VDD
SCLK
1
2
3
4
5
6
7
14 VREFP
13 VREFN
12 GND
CLK
ADS1222
11
10
9
DRDY/DOUT
MUX
AINN1
AINP1
AINN2
AINP2
TEMPEN
BUFEN
8
Terminal Functions
TERMINAL
NAME
NO.
I/O
DESCRIPTION
VDD
1
Analog/Digital
Analog and digital power supply
Serial clock input
SCLK
2
3
4
Digital input
Digital input
Digital Output
CLK
System clock input
DRDY/DOUT
Dual-purpose output:
Data ready: indicates valid data by going low.
Data output: outputs data, MSB first, on the rising edge of SCLK.
MUX
5
6
Digital input
Digital input
Digital input
Analog input
Analog input
Analog input
Analog input
Analog/Digital
Analog input
Analog input
Selects analog input of mux
Selects temperature sensor input from mux
Enables input buffer
TEMPEN
BUFEN
AINP2
AINN2
AINP1
AINN1
GND
7
8
Analog channel 2 positive input
Analog channel 2 negative input
Analog channel 1 positive input
Analog channel 1 negative input
Analog and digital ground
9
10
11
12
13
14
VREFN
VREFP
Negative reference input
Positive reference input
5
BB [ BURR-BROWN CORPORATION ]
