Datasheet

ADS1242, 1243
5
SBAS235H
www.ti.com
PIN CONFIGURATION (ADS1242)
PIN
NUMBER NAME DESCRIPTION
1V
DD
Power Supply
2X
IN
Clock Input
3X
OUT
Clock Output, used with crystal or ceramic
resonator.
4 PDWN Active LOW. Power Down. The power down func-
tion shuts down the analog and digital circuits.
5V
REF+
Positive Differential Reference Input
6V
REF–
Negative Differential Reference Input
7A
IN
0/D0 Analog Input 0/Data I/O 0
8A
IN
1/D1 Analog Input 1/Data I/O 1
9A
IN
2/D2 Analog Input 2/Data I/O 2
10 A
IN
3/D3 Analog Input 3/Data I/O 3
11 GND Ground
12 CS Active LOW, Chip Select
13 D
IN
Serial Data Input, Schmitt Trigger
14 D
OUT
Serial Data Output
15 SCLK Serial Clock, Schmitt Trigger
16 DRDY Active LOW, Data Ready
PIN DESCRIPTIONS (ADS1242)
PIN CONFIGURATION (ADS1243)
PIN
NUMBER NAME DESCRIPTION
1V
DD
Power Supply
2X
IN
Clock Input
3X
OUT
Clock Output, used with crystal or ceramic
resonator.
4 PDWN Active LOW. Power Down. The power down func-
tion shuts down the analog and digital circuits.
5V
REF+
Positive Differential Reference Input
6V
REF–
Negative Differential Reference Input
7A
IN
0/D0 Analog Input 0/Data I/O 0
8A
IN
1/D1 Analog Input 1/Data I/O 1
9A
IN
4/D4 Analog Input 4/Data I/O 4
10 A
IN
5/D5 Analog Input 5/Data I/O 5
11 A
IN
6/D6 Analog Input 6/Data I/O 6
12 A
IN
7/D7 Analog Input 7/Data I/O 7
13 A
IN
2/D2 Analog Input 2/Data I/O 2
14 A
IN
3/D3 Analog Input 3/Data I/O 3
15 GND Ground
16 CS Active LOW, Chip Select
17 D
IN
Serial Data Input, Schmitt Trigger
18 D
OUT
Serial Data Output
19 SCLK Serial Clock, Schmitt Trigger
20 DRDY Active LOW, Data Ready
PIN DESCRIPTIONS (ADS1243)
Top View TSSOP Top View TSSOP
ADS1242
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
DD
X
IN
X
OUT
PDWN
V
REF+
V
REF–
A
IN
0/D0
A
IN
1/D1
DRDY
SCLK
D
OUT
D
IN
CS
GND
A
IN
3/D3
A
IN
2/D2
ADS1243
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
DD
X
IN
X
OUT
PDWN
V
REF+
V
REF–
A
IN
0/D0
A
IN
1/D1
A
IN
4/D4
A
IN
5/D5
DRDY
SCLK
D
OUT
D
IN
CS
GND
A
IN
3/D3
A
IN
2/D2
A
IN
7/D7
A
IN
6/D6