12-Bit High Speed Micro Power Sampling ANALOG-TO-DIGITAL CONVERTER
Description
®
78 OPS 6 A615 8 AD
ADS7816
ADS
781
6
12-Bit High Speed Micro Power Sampling ANALOG-TO-DIGITAL CONVERTER
FEATURES
q 200kHz SAMPLING RATE q MICRO POWER: 1.
9mW at 200kHz 150µW at 12.
5kHz q POWER DOWN: 3µA Max q 8-PIN MINI-DIP, SOIC, AND MSOP q DIFFERENTIAL INPUT q SERIAL INTERFACE
DESCRIPTION
The ADS7816 is a 12-bit, 200kHz sampling analogto-digital converter.
It features low power operation with automatic power down, a synchronous serial interface, and a differential input.
The reference voltage can be varied from 100mV to 5V, with a corresponding resolution from 24µV to 1.
22mV.
Low power, automatic power down, and small size make the ADS7816 ideal for battery operated systems or for systems where a large number of signals must be acquired simultaneously.
It is also ideal for remote and/or isolated data acquisition.
The ADS7816 is available in an 8-pin plastic mini-DIP, an 8-lead SOIC, or an 8-lead MSOP package.
APPLICATIONS
q BATTERY OPERATED SYSTEMS q REMOTE DATA ACQUISITION q ISOLATED DATA ACQUISITION
SAR
Control
VREF
DOUT +In CDAC –In S/H Amp Comparator Serial Interface DCLOCK CS/SHDN
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S.
Tucson Blvd.
, Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111 Internet: http://www.
burr-brown.
com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©
1996 Burr-Brown Corporation
PDS-1355B
Printed in U.
S.
A.
, March, 1997
SPECIFICATIONS
At –40°C to +85°C, +VCC = +5V, VREF = +5V, fSAMPLE = 200kHz, fCLK = 16 • fSAMPLE, unless otherwise specified.
ADS7816 PARAMETER ANALOG INPUT Full-Scale Input Span Absolute Input Voltage Capacitance Leakage Current SYSTEM PERFORMANCE Resolution No Missing Codes Integral Linearity Error Differential Linearity Error Offset Error Gain Error Noise Power Supply Rejection SAMPLING DYNAMICS Conversion Time Acquisition Time Throughp...
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