ADS
ADS
826
823
ADS823
ADS826
SBAS070B – OCTOBER 1995 – REVISED AUGUST 2002
10-Bit, 60MHz Sampling
ANALOG-TO-DIGITAL CONVERTER
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
techniques to provide excellent differential linearity for de-
manding 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 dissipa-
tion 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 avail-
able 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 perfor-
mance 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 ref-
erence. 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
TI [ TEXAS INSTRUMENTS ]
