ADS7834_14 Datasheet, PDF (1/22 Pages) Texas Instruments – 12-Bit High-Speed, Low-Power Sampling ANALOG-TO-DIGITAL CONVERTER

ADS7834
ADS7834
SBAS098A – JANUARY 1998 – REVISED SEPTEMBER 2003
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_REF INPUT RANGE
APPLICATIONS
q BATTERY-OPERATED SYSTEMS
q DIGITAL SIGNAL PROCESSING
q HIGH-SPEED DATA ACQUISITION
q WIRELESS COMMUNICATION SYSTEMS
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.
SAR
CLK
CONV
+In
–In
S/H Amp
CDAC
Comparator
Serial
Interface
DATA
Buffer
Internal
+2.5V Ref
V_REF
10kΩ ±30%
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.
All trademarks are the property of their respective owners.
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.
www.ti.com
Copyright © 1998-2003, Texas Instruments Incorporated