Datasheet

ADS7950, ADS7951, ADS7952, ADS7953
ADS7954, ADS7955, ADS7956, ADS7957
ADS7958, ADS7959, ADS7960, ADS7961
www.ti.com SLAS605A –JUNE 2008–REVISED JANUARY 2010
TERMINAL FUNCTIONS - TSSOP PACKAGES (continued)
DEVICE NAME
ADS7953 ADS7952 ADS7951 ADS7950
ADS7957 ADS7956 ADS7955 ADS7954 PIN NAME I/O FUNCTION
ADS7961 ADS7960 ADS7959 ADS7958
PIN NO.
ADC ANALOG INPUT
8 8 8 8 AINP I Signal input to ADC
9 9 9 9 AINM I ADC input ground
MULTIPLEXER
7 7 7 7 MXO O Multiplexer output
28 28 20 20 Ch0 I Analog channels for multiplexer
27 27 19 18 Ch1 I
26 26 18 14 Ch2 I
25 25 17 12 Ch3 I
24 24 14 - Ch4 I
23 23 13 - Ch5 I
22 22 12 - Ch6 I
21 21 11 - Ch7 I
18 18 - - Ch8 I
17 17 - - Ch9 I
16 16 - - Ch10 I
15 15 - - Ch11 I
14 - - - Ch12 I
13 - - - Ch13 I
12 - - - Ch14 I
11 - - - Ch15 I
DIGITAL CONTROL SIGNALS
31 31 23 23 CS I Chip select input
32 32 24 24 SCLK I Serial clock input
33 33 25 25 SDI I Serial data input
34 34 26 26 SDO O Serial data output
GENERAL PURPOSE INPUTS / OUTPUTS: These pins have programmable dual functionality. Refer to Table 8 for functionality
programming
37 37 29 29 GPIO0 I/O General purpose input or output
High alarm or O Active high output indicating high alarm or high/low
High/Low alarm depending on programming
alarm
38 38 30 30 GPIO1 I/O General purpose input or output
Low alarm O Active high output indicating low alarm
1 1 1 1 GPIO2 I/O General purpose input or output
Range I Selects range: High -> Range 2 / Low -> Range 1
2 2 2 2 GPIO3 I/O General purpose input or output
PD I Active low power down input
POWER SUPPLY AND GROUND
5, 29 5, 29 5, 21 5, 21 +VA — Analog power supply
6, 10, 19, 6, 10, 19, 6, 10, 22 6, 10, 22 AGND — Analog ground
20, 30 20, 30
36 36 28 28 +VBD — Digital I/O supply
35 35 27 27 BDGND — Digital ground
NC PINS
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Product Folder Link(s): ADS7950, ADS7951, ADS7952, ADS7953 ADS7954, ADS7955, ADS7956, ADS7957 ADS7958,
ADS7959, ADS7960, ADS7961