ADS1243SJD Datasheet, PDF (1/40 Pages) Texas Instruments – 24-BIT ANALOG-TO-DIGITAL CONVERTER

ADS1243-HT
www.ti.com
24-BIT ANALOG-TO-DIGITAL CONVERTER
Check for Samples: ADS1243-HT
SBAS525 – DECEMBER 2011
FEATURES
1
•2 24-Bits No Missing Codes
• Simultaneous 50-Hz and 60-Hz Rejection
(–90 dB Minimum)
• 0.0025% INL
• PGA Gains From 1 to 128
• Single-Cycle Settling
• Programmable Data Output Rates
• External Differential Reference of 0.1 V to 5 V
• On-Chip Calibration
• SPI™ Compatible
• 2.7 V to 5.25 V Supply Range
• 600-µW Power Consumption
• Up to Eight Input Channels
• Up to Eight Data I/O
APPLICATIONS
• Down-Hole Drilling
• High Temperature Environments
• Vibration/Modal Analysis
• Multi-Channel Data Acquisition
• Acoustics/Dynamic Strain Gauges
• Pressure Sensors
SUPPORTS EXTREME TEMPERATURE
APPLICATIONS
• Controlled Baseline
• One Assembly/Test Site
• One Fabrication Site
• Available in Extreme (–55°C/210°C)
Temperature Range⁽¹⁾
• Extended Product Life Cycle
• Extended Product-Change Notification
• Product Traceability
• Texas Instruments’ high temperature products
utilize highly optimized silicon (die) solutions
with design and process enhancements to
maximize performance over extended
temperatures. All devices are characterized
and qualified for 1000 hours of continuous
operating life at maximum rated temperatures.
V_DD
V_DD
2µA
Offset
DAC
V_REF+
V_REF–
X_IN
X_OUT
Clock Generator
A_IN0/D0
A_IN1/D1
A_IN2/D2
A_IN3/D3
A_IN4/D4
A_IN5/D5
A_IN6/D6
A_IN7/D7
IN+
MUX _IN– BUF
A = 1:128
+
PGA
2nd-Order
Modulator
Digital
Filter
Controller
Registers
2µA
GND
GND
PDWN
(1) Custom temperature ranges available
Serial Interface
DRDY
SCLK
D_IN
D_OUT
CS
DESCRIPTION
The ADS1243 is a precision, wide dynamic range, delta-sigma, analog-to-digital (A/D) converter with 24-bit
resolution operating from 2.7-V to 5.25-V supplies. This delta-sigma, A/D converter provides up to 24 bits of no
missing code performance and effective resolution of 21 bits.
The input channels are multiplexed. Internal buffering can be selected to provide a very high input impedance for
direct connection to transducers or low-level voltage signals. Burnout current sources are provided that allow for
the detection of an open or shorted sensor. An 8-bit digital-to-analog converter (DAC) provides an offset
correction with a range of 50% of the FSR (Full-Scale Range).
1
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.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated