Information

Texas Instruments Signal Chain Guide 2013 | 35
Data Converters
Analog-to-Digital Converters – SAR ADCs
2-Channel, 1 Msps, 12-/14-/16-Bit Simultaneous Sampling ADC with 2 Refs
ADS7253/54, ADS7853/54, ADS8353/54
The ADS8353 family is the world’s smallest 2-channel, simultaneous sampling ADCs. With
sampling speeds up to 1 MSPS and great AC performance like 90dB SNR and –98 dB THD
at 100 kHz, the devices with internal references do not compromise on ADC specs for size
and integration. All versions are compatible from a software and hardware standpoint, allow
-
ing a platform of options from 12-bit, 14-bit, and 16-bits. The small size, high-speed, and zero
latency make this ideal in applications such as position sensing in servo motors, digitizing
optical encoders, EDFA gain control loops, and power monitoring.
Functional block diagram
Get more information: www.ti.com/product/Part Number
(ADS7253, ADS7254, ADS7853, ADS7854, ADS8353, ADS8354)
AINP
AINn
AINP
AINn
REF1
REF2
AVDD DVDD
AGND DGND
CS
DIN
SCLK
DOUT
REF
SAR
COMP
CDAC
SAR
COMP
CDAC
SPI and
Control
Logic
Key Features
• 1MSPSthroughputwithzerolatency
• Integratedreferencewithindependent
buffer for each ADC
• Lowpower:25mWwith5Vsupply
• Extendedtemperaturerange:–40to
125ºC
• Smallsize:9mm
2
QFN-16and
16-TSSOP