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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 capacitorbased 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 analogsupply range from 2.7 V to 5.25 V. These devices are suitable for battery-powered and isolated powersupply 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.
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...................................