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ADS8861 Datenblatt(Datasheet) 9 Page - TI store

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Teile-Nr. ADS8861
Beschreibung  16-Bit, 1-MSPS, Serial Interface, microPower, Miniature, True-Differential Input, SAR Analog-to-Digital Converter
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Homepage  http://www.ti.com
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1
2
3
4
5
10
9
8
7
6
REF
AVDD
AINP
AINN
GND
CONVST
DOUT
SCLK
DIN
DVDD
Thermal
PAD
1
2
3
4
5
10
9
8
7
6
REF
AVDD
AINP
AINN
GND
CONVST
DOUT
SCLK
DIN
DVDD
ADS8861
www.ti.com
SBAS557A – MAY 2013 – REVISED DECEMBER 2013
PIN CONFIGURATIONS
DGS PACKAGE
DRC PACKAGE
VSSOP-10
SON-10
(TOP VIEW, Not to Scale)
(TOP VIEW, Not to Scale)
PIN ASSIGNMENTS
PIN
PIN NAME
NUMBER
FUNCTION
DESCRIPTION
AINN
4
Analog input
Inverting analog signal input
AINP
3
Analog input
Noninverting analog signal input
Analog power supply.
AVDD
2
Analog
This pin must be decoupled to GND with a 1-
μF capacitor.
Convert input.
CONVST
6
Digital 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
DIN
9
Digital input
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.
DOUT
7
Digital output
Serial data output
Digital interface power supply.
DVDD
10
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)
GND
5
Analog, digital
and digital I/O supply (DVDD). The reference return line is also internally connected to
this pin.
Positive reference input.
REF
1
Analog
This pin must be decoupled with a 10-
μF or larger capacitor.
Clock input for serial interface.
SCLK
8
Digital input
Data output (on DOUT) are synchronized with this clock.
Exposed thermal pad.
Thermal pad
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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9
Product Folder Links: ADS8861




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