Datasheet
ADS1194, ADS1196
ADS1198
www.ti.com
SBAS471C –APRIL 2010– REVISED NOVEMBER 2011
BGA PIN ASSIGNMENTS (continued)
NAME TERMINAL FUNCTION DESCRIPTION
RLDIN 3A Analog input Right leg drive input to MUX. If unused, short to AVDD.
RLDOUT 3B Analog output Right leg drive output
RLDINV 3C Analog input/output Right leg drive inverting input
WCT 3D Analog output Wilson Center Terminal output
Internal test signal/single-ended buffer output based on register settings. If
TESTP_PACE_OUT1 3E Analog input/buffer output
unused, short to AVDD.
Internal test signal/single-ended buffer output based on register settings. If
TESTN_PACE_OUT2 3F Analog input/output
unused, short to AVDD.
VCAP4 3G Analog output Analog bypass capacitor
VREFP 3H Analog input/output Positive reference voltage
AVDD 4A Supply Analog supply
AVDD 4B Supply Analog supply
RLDREF 4C Analog input Right leg drive noninverting input
AVSS 4D Supply Analog ground
RESV1 4E Digital input Reserved for future use; must tie to logic low (DGND)
RESV2 4F Analog output Reserved for future use; leave floating
RESV3 4G Analog output Reserved for future use; leave floating
VREFN 4H Analog input Negative reference voltage
AVSS 5A Supply Analog ground
AVSS 5B Supply Analog ground
AVSS 5C Supply Analog ground
AVSS 5D Supply Analog ground
GPIO4 5E Digital input/output General-purpose input/output pin
GPIO1 5F Digital input/output General-purpose input/output pin
PWDN 5G Digital input Power-down; active low
VCAP1 5H Analog input/output Analog bypass capacitor
AVDD 6A Supply Analog supply
AVDD 6B Supply Analog supply
AVDD 6C Supply Analog supply
DRDY 6D Digital output Data ready; active low
GPIO3 6E Digital input/output General-purpose input/output pin
DAISY_IN
(2)
6F Digital input Daisy-chain input
RESET 6G Digital input System reset; active low
VCAP2 6H — Analog bypass capacitor
AVDD1 7A Supply Analog supply for charge pump
VCAP3 7B — Analog bypass capacitor, internally-generated AVDD + 1.9V
DGND 7C Supply Digital ground
DGND 7D Supply Digital ground
GPIO2 7E Digital input/output General-purpose input/output pin
CS 7F Digital input SPI chip select; active low
START 7G Digital input Start conversion
DGND 7H Supply Digital ground
AVSS1 8A Supply Analog ground for charge pump
CLKSEL 8B Digital input Master clock select
DVDD 8C Supply Digital power supply
DVDD 8D Supply Digital power supply
DOUT 8E Digital output SPI data out
SCLK 8F Digital input SPI clock
CLK 8G Digital input/output External master clock input or internal clock output
DIN 8H Digital input SPI data in
(2) When DAISY_IN is not used, tie to logic '0'.
Copyright © 2010–2011, Texas Instruments Incorporated Submit Documentation Feedback 9
Product Folder Link(s): ADS1194 ADS1196 ADS1198