ADS7950, ADS7951, ADS7952, ADS7953
ADS7954, ADS7955, ADS7956, ADS7957
ADS7958, ADS7959, ADS7960, ADS7961
www.ti.com ...................................................................................................................................................................................................... SLAS605–JUNE 2008
12/10/8-Bit, 1 MSPS, 16/12/8/4-Channel, Single-Ended, MicroPower, Serial Interface ADCs
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FEATURES
DESCRIPTION
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1-MHz Sample Rate Serial Devices
Product Family of 12/10/8-Bit Resolution
Zero Latency
The ADS79XX is
analog-to-digital converter family. The following table
shows all twelve devices from this product family.
a
12/10/8-bit multichannel
The devices include a capacitor based SAR A/D
converter with inherent sample and hold.
20-MHz Serial Interface
Analog Supply Range: 2.7 to 5.25V
I/O Supply Range: 1.7 to 5.25V
The devices accept a wide analog supply range from
2.7V to 5.25V. Very low power consumption makes
these devices suitable for battery-powered and
isolated power supply applications.
Two SW Selectable Unipolar, Input Ranges: 0
to 2.5V and 0 to 5V
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Auto and Manual Modes for Channel Selection
A wide 1.7V to 5.25V I/O supply range facilitates a
glue-less interface with the most commonly used
CMOS digital hosts.
12,8,4-Channel Devices can Share 16 Channel
Device Footprint
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Two Programmable Alarm Levels per Channel
Four Individually Configurable GPIOs
The serial interface is controlled by CS and SCLK for
easy connection with microprocessors and DSP.
Typical Power Dissipation: 14.5 mW (+VA = 5V,
+VBD = 3V) at 1 MSPS
The input signal is sampled with the falling edge of
CS. It uses SCLK for conversion, serial data output,
and reading serial data in. The devices allow auto
sequencing of preselected channels or manual
selection of a channel for the next conversion cycle.
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Power-Down Current (1 µA)
Input Bandwidth (47 at 3dB)
30-Pin and 38-Pin TSSOP Packages
There are two software selectable input ranges (0V -
2.5V and 0V - 5V), four individually configurable
GPIOs, and two programmable alarm thresholds per
channel. These features make the devices suitable
for most data acquisition applications.
APPLICATIONS
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PLC / IPC
Battery Powered Systems
Medical Instrumentation
Digital Power Supplies
Touch Screen Controllers
High-Speed Data Acquisition Systems
High-Speed Closed-Loop Systems
The devices offer an attractive power-down feature.
This is extremely useful for power saving when the
device is operated at lower conversion speeds.
The 16/12-channel devices from this family are
available in a 38-pin TSSOP package and the
4/8-channel devices are available in a 30-pin TSSOP
package.
MICROPOWER MULTI-CHANNEL ADS79XX FAMILY
RESOLUTION
10 BIT
NUMBER OF
CHANNELS
12 BIT
8 BIT
16
12
8
ADS7953
ADS7952
ADS7951
ADS7950
ADS7957
ADS7956
ADS7955
ADS7954
ADS7961
ADS7960
ADS7959
ADS7958
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008, Texas Instruments Incorporated