ADS7826 Datasheet, PDF (1/20 Pages) Texas Instruments – 10/8/12-BIT HIGH SPEED 2.7 V microPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER

ADS7826
ADS7827
ADS7829
SLAS388 – JUNE 2003
10/8/12-BIT HIGH SPEED 2.7 V microPOWER™ SAMPLING
ANALOG-TO-DIGITAL CONVERTER
FEATURES
• High Throughput at Low Supply Voltage
(2.7 V V_CC)
– ADS7829: 12-bit 125 KSPS
– ADS7826: 10-bit 200 KSPS
– ADS7827: 8-bit 250 KSPS
• Very Wide Operating Supply VoltageL:
2.7 V to 5.25 V (as Low as 2.0 V With Reduced
Performance)
• Rail-to-Rail, Pseudo Differential Input
• Wide Reference Voltage: 50 mV to V_CC
• Micropower Auto Power-Down:
– Less Than 60 µW at 75 kHz, 2.7 V V_CC
• Low Power Down Current: 3 µA Max
• Ultra Small Chip Scale Package:
8-pin 3 x 3 PDSO (SON, Same Size as QFN)
• SPI™ Compatible Serial Interface
APPLICATIONS
• Battery Operated Systems
• Remote Data Acquisition
• Isolated Data Acquisition
• Simultaneous Sampling, Multichannel
Systems
DESCRIPTION
The ADS7826/27/29 is a family of 10/8/12-bit sampling
analog-to-digital converters (A/D) with assured specifi-
cations at 2.7-V supply voltage. It requires very little
power even when operating at the full sample rate. At
lower conversion rates, the high speed of the device
enables it to spend most of its time in the power down
mode— the power dissipation is less than 60 µW at 7.5
kHz.
The ADS7826/27/29 also features operation from 2.0 V
to 5 V, a synchronous serial interface, and a differential
input. The reference voltage can be set to any level
within the range of 50 mV to V_CC.
Ultra-low power and small package size make the
ADS7826/27/29 family ideal for battery operated sys-
tems. It is also a perfect fit for remote data acquisition
modules, simultaneous multichannel systems, and iso-
lated data acquisition. The ADS7826/27/29 family is
available in a 3 x 3 8-pin PDSO (SON, same size as
QFN) package.
SAR
Control
V_REF
+In
–In
S/H Amp
CDAC
Comparator
Serial
Interface
D_OUT
DCLOCK
CS/SHDN
microPOWER is a trademark of Texas Instruments.
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 Texas Instruments
standard warranty. Production processing does not necessarily in-
clude testing of all parameters.
Copyright © 2003, Texas Instruments Incorporated