ADS7834

DESCRIPTION

The ADS7834 is a 12-bit sampling analog-to-digital converter

(A/D) complete with sample/hold, internal 2.5V reference,

and synchronous serial interface. Typical power dissipation

is 11mW at a 500kHz throughput rate. The device can be

placed into a power-down mode that reduces dissipation to

just 2.5mW. The input range is zero to the reference voltage,

and the internal reference can be overdriven by an external

voltage.

Low power, small size, and high speed make the ADS7834

ideal for battery-operated systems such as wireless

communication devices, portable multi-channel data loggers,

and spectrum analyzers. The serial interface also provides

low-cost isolation for remote data acquisition. The ADS7834

is available in a plastic mini-DIP-8 or an MSOP-8 package

and is ensured over the –40

°C to +85°C temperature range.

12-Bit High-Speed, Low-Power Sampling

ANALOG-TO-DIGITAL CONVERTER

FEATURES

q 500kHz THROUGHPUT RATE

q 2.5V INTERNAL REFERENCE

q LOW POWER: 11mW

q SINGLE-SUPPLY +5V OPERATION

q DIFFERENTIAL INPUT

q SERIAL INTERFACE

q 12-BITS NO MISSING CODES

q MINI-DIP-8 AND MSOP-8

q 0V TO V

APPLICATIONS

q BATTERY-OPERATED SYSTEMS

q DIGITAL SIGNAL PROCESSING

q HIGH-SPEED DATA ACQUISITION

q WIRELESS COMMUNICATION SYSTEMS

ADS7

834

SAR

CLK

Serial

Interface

Comparator

S/H Amp

DATA

+In

–In

CDAC

Internal

+2.5V Ref

Buffer

V

REF

CONV

10k

Ω ±30%

SBAS098A – JANUARY 1998 – REVISED SEPTEMBER 2003

www.ti.com

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

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