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FEATURES

APPLICATIONS

DESCRIPTION

ADS7883

www.ti.com ....................................................................................................................................................................................................... SLAS594 – JULY 2008

12-BIT, 3-MSPS, MICROPOWER, MINIATURE

SAR ANALOG-TO-DIGITAL CONVERTER

• Base Band Converters in Radio

• 3-MHz Sample Rate Serial Device

Communication

• 12-Bit Resolution

• Motor Current/Bus Voltage Sensors in Digital

• Zero Latency

Drives

• 48-MHz Serial Interface

• Optical Networking (DWDM, MEMS Based

• Supply Range: 2.7 V to 5.5 V

Switching)

• Low Power Dissipation:

• Optical Sensors

• Battery Powered Systems

–

6.45 mW at 3-V VDD, 2 MSPS

• Medical Instrumentations

–

13.5 mw at 5-V VDD, 3 MSPS

• High-Speed Data Acquisition Systems

• ±0.6 LSB INL, ±0.5 LSB DNL

• High-Speed Closed-Loop Systems

• 72 dB SINAD, –84 dB THD

• Unipolar Input Range: 0 V to V

DD

• Power-Down Current: 1 µA

• Wide Input Bandwidth: 30 MHz at 3 dB

• 6-Pin SOT23 Package

The ADS7883 is a 12-bit, 3-MSPS analog-to-digital converter (ADC). The device includes a capacitor based SAR

A/D converter with inherent sample and hold. The serial interface in the device is controlled by the CS and SCLK

signals for glueless connections with microprocessors and DSPs. The input signal is sampled with the falling

edge of CS, and SCLK is used for conversion and serial data output.

The device operates from a wide supply range from 2.7 V to 5.5 V. The low power consumption of the device

makes it suitable for battery-powered applications. The device also includes a power saving power-down feature

for when the device is operated at lower conversion speeds.

The high level of the digital input to the device is not limited to device VDD. Therefore the digital input can go as

high as 5.5 V when the device supply is 2.7 V. This feature is useful when digital signals are received from

another circuit with different supply levels. This also reduces restrictions on power-up sequencing.

The ADS7883 is available in a 6-pin SOT23 package and is specified for operation from –40°C to 125°C.

MicroPower Miniature SAR Converter Family

BIT

< 300 KSPS

300 KSPS – 1.25 MSPS

3 MSPS

3 MSPS for 4.5 VDD to 5.5 VDD

12-Bit

ADS7866 (1.2 VDD to 3.6 VDD)

ADS7886 (2.35 VDD to 5.25 VDD)

ADS7883

2 MSPS for 2.7 VDD to 4.5 VDD

10-Bit

ADS7867 (1.2 VDD to 3.6 VDD)

ADS7887 (2.35 VDD to 5.25 VDD)

ADS7884 (2.7 VDD to 5.5 VDD)

8-Bit

ADS7868 (1.2 VDD to 3.6 VDD)

ADS7888 (2.35 VDD to 5.25 VDD)

ADS7885 (2.7 VDD to 5.5 VDD)

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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.

Copyright © 2008, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.