ADS
826
ADS
823
ADS823
ADS826
SBAS070A – MAY 2001
10-Bit, 60MHz Sampling
ANALOG-TO-DIGITAL CONVERTER
TM
FEATURES
q
HIGH SNR: 60dB
q
HIGH SFDR: 74dBFS
q
LOW POWER: 265mW
q
INTERNAL/EXTERNAL REFERENCE OPTION
q
SINGLE-ENDED OR
DIFFERENTIAL ANALOG INPUT
q
PROGRAMMABLE INPUT RANGE
q
LOW DNL: 0.25LSB
q
SINGLE +5V SUPPLY OPERATION
q
+3V/+5V LOGIC I/O COMPATIBLE (ADS826)
q
POWER DOWN: 20mW
q
SSOP-28 PACKAGE
APPLICATIONS
q
MEDICAL IMAGING
q
COMMUNICATIONS
q
CCD IMAGING
q
VIDEO DIGITIZING
q
TEST EQUIPMENT
The ADS823 and ADS826 employ digital error correction tech-
niques to provide excellent differential linearity for demanding
imaging applications. Their low distortion and high SNR give the
extra margin needed for medical imaging, communications, video,
and test instrumentation. The ADS823 and ADS826 offer power
dissipation of 265mW and also provide a power down mode, thus
reducing power dissipation to only 20mW.
The ADS823 and ADS826 are specified at a maximum sampling
frequency of 60MHz and a single-ended input range of 1.5V to
3.5V. The ADS823 and ADS826 are available in an SSOP-28
package and are pin-compatible with the 10-bit, 40MHz ADS822
and ADS825, and the 10-bit, 75MHz ADS828.
CLK
VDRV
DESCRIPTION
The ADS823 and ADS826 are pipeline, CMOS Analog-to-Digital
Converters (ADCs) that operate from a single +5V power supply.
These converters provide excellent performance with a single-
ended input and can be operated with a differential input for added
spurious performance. These high-performance converters include
a 10-bit quantizer, high-bandwidth track-and-hold, and a high-
accuracy internal reference. They also allow for disabling the
internal reference and utilizing external references. This external
reference option provides excellent gain and offset matching when
used in multi-channel applications or in applications where full-
scale range adjustment is required.
+V
S
ADS823
ADS826
Timing
Circuitry
V
IN
IN
IN
T/H
10-Bit
Pipelined
A/D Core
Error
Correction
Logic
3-State
Outputs
D0
•
•
•
D9
CM
Internal
Reference
Optional External
Reference
Int/Ext
PD
OE
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 include
testing of all parameters.
Copyright © 1995, Texas Instruments Incorporated
www.ti.com
ETC [ ETC ]
