ADS5422
14-Bit, 62MSPS Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
a71 HIGH DYNAMIC RANGE:
High SFDR: 85dB at 10MHz f
IN
High SNR: 72dB at 10MHz f
IN
a71 PREMIUM TRACK-AND-HOLD:
Differential Inputs
Selectable Full-Scale Input Range
a71 FLEXIBLE CLOCKING:
Differential or Single-Ended
Accepts Sine or Square Wave Clocking Down to
0.5Vp-p
Variable Threshold Level
APPLICATIONS
a71 COMMUNICATIONS RECEIVERS
a71 TEST INSTRUMENTATION
a71 CCD IMAGING
14-Bit
Pipelined
ADC
Core
Reference and
Mode Select
Reference Ladder
and Driver
Timing Circuitry
Error
Correction
Logic
3-State
Outputs
T&H
D0
D13
•
•
•
+V
S
ADS5422
CLK
CLK
OESEL2 REFBV
REF
REFT VDRV
IN2Vp-p
2Vp-p
CM
(+2.5V)
PDSEL1
IN
DV
ADS5422
SBAS250C – MARCH 2002 – REVISED MARCH 2004
www.ti.com
Copyright © 2002-2004, Texas Instruments Incorporated
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.
DESCRIPTION
The ADS5422 is a high-dynamic range, 14-bit, 62MSPS,
pipelined Analog-to-Digital Converter (ADC). It includes a
high-bandwidth linear track-and-hold amplifier that gives good
spurious performance up to the Nyquist rate. The clock input
can accept a low-level differential sine wave or square wave
signal down to 0.5Vp-p, further improving the Signal-to-Noise
Ratio (SNR) performance.
The ADS5422 has a 4Vp-p differential input range
(2Vp-p • 2 inputs) for optimum Spurious-Free Dynamic
Range (SFDR). The differential operation gives the lowest
even-order harmonic components. A lower input voltage can
also be selected using the internal references, further optimizing
SFDR.
The ADS5422 is available in an LQFP-64 package.
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.