ADS8887IDRCT Datasheet, PDF (9/44 Pages) Texas Instruments – 18-Bit, 100-kSPS, Serial Interface, microPower, Miniature, True-Differential Input, SAR Analog-to-Digital Converter

ADS8887
www.ti.com
PIN CONFIGURATIONS
SBAS613A – MAY 2013 – REVISED DECEMBER 2013
DGS PACKAGE
VSSOP-10
(TOP VIEW, Not to Scale)
REF 1
10 DVDD
AVDD 2
9 DIN
AINP 3
8 SCLK
AINN 4
7 DOUT
GND 5
6 CONVST
DRC PACKAGE
SON-10
(TOP VIEW, Not to Scale)
REF 1
10 DVDD
AVDD 2
9 DIN
AINP 3
AINN 4
Thermal
PAD
8 SCLK
7 DOUT
GND 5
6 CONVST
PIN NAME
AINN
AINP
AVDD
PIN
NUMBER
4
3
2
CONVST
6
DIN
9
DOUT
7
DVDD
10
GND
5
REF
1
SCLK
8
Thermal pad
—
FUNCTION
Analog input
Analog input
Analog
Digital input
Digital input
Digital output
Power supply
Analog, digital
Analog
Digital input
Thermal pad
PIN ASSIGNMENTS
DESCRIPTION
Inverting analog signal input
Noninverting analog signal input
Analog power supply.
This pin must be decoupled to GND with a 1-μF capacitor.
Convert input.
This pin also functions as the CS input in 3-wire interface mode. Refer to the
Description and Timing Characteristics sections for more details.
Serial data input.
The DIN level at the start of a conversion selects the mode of operation (such as CS
or daisy-chain mode). This pin also serves as the CS input in 4-wire interface mode.
Refer to the Description and Timing Characteristics sections for more details.
Serial data output
Digital interface power supply.
This pin must be decoupled to GND with a 1-μF capacitor.
Device ground.
Note that this pin is a common ground pin for both the analog power supply (AVDD)
and digital I/O supply (DVDD). The reference return line is also internally connected to
this pin.
Positive reference input.
This pin must be decoupled with a 10-μF or larger capacitor.
Clock input for serial interface.
Data output (on DOUT) are synchronized with this clock.
Exposed thermal pad.
Texas Instruments recommends connecting the thermal pad to the printed circuit
board (PCB) ground.
Copyright © 2013, Texas Instruments Incorporated
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