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ADS7961-Q1 Datasheet Preview

ADS7961-Q1 Datasheet

Analog-to-Digital Converter

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ADS7950-Q1, ADS7951-Q1, ADS7952-Q1, ADS7953-Q1, ADS7954-Q1
ADS7956-Q1, ADS7957-Q1, ADS7958-Q1, ADS7959-Q1, ADS7960-Q1, ADS7961-Q1
SBAS652A – MAY 2014 – REVISED AUGUST 2014
ADS79xx-Q1 8-, 10-, and 12-Bit, 1-MSPS, 4-, 8-, 12-, and 16-Channel, Single-Ended,
Micropower, Serial Interface, Analog-to-Digital Converters
1 Features
1 Qualified for Automotive Applications
• AEC-Q100 Tested with the Following Results:
– Device Temperature Grade 1: –40°C to 125°C
Ambient Operating Temperature Range
– Device HBM ESD Classification Level H2
– Device CDM ESD Classification Level C4B
• Product Family:
– 8-, 10-, and 12-Bit Resolution
– 4-, 8-, 12-Channel Devices Share 16-Channel
Footprint
• 1-MHz Sample-Rate Serial Devices
• Analog Supply Range: 2.7 V to 5.25 V
• I/O Supply Range: 1.7 V to 5.25 V
• Two SW-Selectable Unipolar, Input Ranges:
– (0 V to 2.5 V) or (0 V to 5 V)
• Auto and Manual Modes for Channel Selection
• Two Programmable Alarm Levels per Channel
• Four Individually Configurable GPIOs
• Typical Power Dissipation: 14.5 mW (V(+VA) = 5 V,
V(+VBD) = 3 V) at 1 MSPS
• Power-Down Current (1 μA)
• 30-Pin and 38-Pin TSSOP Package
2 Applications
• Automotive Systems
• Power Supply Monitoring
• Battery-Powered Systems
• High-Speed, Data-Acquisition Systems
3 Description
The ADS79xx-Q1 device family consists of
multichannel 8-bit, 10-bit and 12-bit analog-to-digital
converters (ADCs). The devices include a capacitor-
based successive approximation register (SAR) ADC
with inherent sample and hold. Multiple features and
great performance makes the ADS79xx-Q1 device
useful for wide variety of applications where multiple
channels should be monitored.
The ADS79xx-Q1 device works on a wide analog-
supply range from 2.7 V to 5.25 V. These devices are
suitable for battery-powered and isolated power-
supply applications because of very-low power
consumption.
The 4- and 8-channel devices are available in 30-pin
TSSOP package. The 12- and 16-channel devices
are available in 38-pin TSSOP package.
Device Information(1)
DEVICE NAME
PACKAGE
BODY SIZE
ADS7950-Q1
ADS7951-Q1
ADS7954-Q1
TSSOP (30)
7.80 mm × 4.40 mm
ADS7958-Q1
ADS7959-Q1
ADS7952-Q1
ADS7953-Q1
ADS7956-Q1
ADS7957-Q1
TSSOP (38)
9.70 mm × 4.40 mm
ADS7960-Q1
ADS7961-Q1
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
High input
impedance PGA
(or non inverting
buffer such as
THS4031)
Ch0
Ch1
Ch2
Detailed Block Diagram
PGA Gain
Control
GPIO1
GPIO2
GPIO3
MXO
AINP
GPIO0
high-alarm
low-alarm
ADC
SDO
To
Host
(1)
Chn
SDI
SCLK
CS
REF
REF5025
o/p
10 µF
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

ADS7961-Q1 Datasheet Preview

ADS7961-Q1 Datasheet

Analog-to-Digital Converter

No Preview Available !

ADS7950-Q1, ADS7951-Q1, ADS7952-Q1, ADS7953-Q1, ADS7954-Q1
ADS7956-Q1, ADS7957-Q1, ADS7958-Q1, ADS7959-Q1, ADS7960-Q1, ADS7961-Q1
SBAS652A – MAY 2014 – REVISED AUGUST 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configurations and Functions ....................... 3
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ..................................... 5
7.2 Handling Ratings....................................................... 5
7.3 Recommended Operating Conditions....................... 6
7.4 Thermal Information .................................................. 6
7.5 Electrical Characteristics: ADS7950-Q1, ADS7951-
Q1, ADS7952-Q1, ADS7953-Q1 ............................... 6
7.6 Electrical Characteristics: ADS7954-Q1, ADS7956-
Q1, ADS7957-Q1....................................................... 8
7.7 Electrical Characteristics: ADS7958-Q1, ADS7959-
Q1, ADS7960-Q1, ADS7961-Q1 ............................... 9
7.8 Timing Requirements .............................................. 11
7.9 Typical Characteristics (All ADS79xx-Q1 Family
Devices) ................................................................... 12
7.10 Typical Characteristics (12-Bit Devices Only)....... 13
8 Detailed Description ............................................ 20
8.1 Overview ................................................................. 20
8.2 Functional Block Diagram ...................................... 20
8.3 Feature Description................................................. 21
8.4 Device Functional Modes........................................ 25
8.5 Digital Output Code................................................. 35
8.6 Programming: GPIO................................................ 36
9 Application and Implementation ........................ 40
9.1 Application Information............................................ 40
9.2 Typical Applications ................................................ 40
9.3 Do's and Don'ts ....................................................... 42
10 Power-Supply Recommendations ..................... 42
11 Layout................................................................... 43
11.1 Layout Guidelines ................................................. 43
11.2 Layout Example .................................................... 43
12 Device and Documentation Support ................. 44
12.1 Documentation Support ........................................ 44
12.2 Related Links ........................................................ 44
12.3 Trademarks ........................................................... 44
12.4 Electrostatic Discharge Caution ............................ 44
12.5 Glossary ................................................................ 44
13 Mechanical, Packaging, and Orderable
Information ........................................................... 44
4 Revision History
Changes from Original (May 2014) to Revision A
Page
• Added all devices to Device Information table ...................................................................................................................... 1
• Deleted Device Comparison Table footnote........................................................................................................................... 3
• Changed entire Application and Implementation section .................................................................................................... 40
2
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Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: ADS7950-Q1 ADS7951-Q1 ADS7952-Q1 ADS7953-Q1 ADS7954-Q1 ADS7956-Q1 ADS7957-
Q1 ADS7958-Q1 ADS7959-Q1 ADS7960-Q1 ADS7961-Q1



Part Number ADS7961-Q1
Description Analog-to-Digital Converter
Maker etcTI
Total Page 3 Pages
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