Texas Instruments ADS1251 24-Bit, 20kHz, Low-Power Analog-to-Digital Converter Data Sheet
Summary
The ADS1251 is a high-precision, 24-bit delta-sigma Analog-to-Digital Converter designed for robust measurement in demanding applications. Featuring wide dynamic range and ultra-low power consumption, this single-channel converter provides up to 19 bits of effective resolution using a simple +5V supply. The accompanying datasheet details its electrical specifications, performance parameters (including low noise/THD), and usage guidelines. It is ideal for developers building professional instruments in fields such as cardiac diagnostics, industrial process control, blood analysis, and advanced portable instrumentation.
Page 1 Text Content
查询ADS1251供应商
ADS1251
ADS1251
SBAS184A – MARCH 2001 – REVISED SEPTEMBER 2003
24-Bit, 20k Hz, Low-Power ANALOG-TO-DIGITAL CONVERTER
FEATURES DESCRIPTION 24 BITS—NO MISSING CODES The ADS1251 is a precision, wide dynamic range, delta- sigma, Analog-to-Digital (A/D) converter with 24-bit resolu-
19 BITS EFFECTIVE RESOLUTION UP TO
tion operating from a single +5V supply. The delta-sigma
20k Hz DATA RATE
architecture features wide dynamic range, and 24 bits of no
LOW NOISE: 1.5ppm
missing code performance. Effective resolution of 19 bits
DIFFERENTIAL INPUTS
(1.5ppm of rms noise) is achieved at conversion rates up to INL: 15ppm (max) 20k Hz. EXTERNAL REFERENCE (0.5V to 5V) The ADS1251 is designed for high-resolution measurement applications in cardiac diagnostics, smart transmitters, indus-
POWER-DOWN MODE
trial process control, weigh scales, chromatography, and
SYNC MODE
portable instrumentation. The converter includes a flexible,
LOW POWER: 8m W at 20k Hz
2-wire synchronous serial interface for low-cost isolation.
5m W at 10k Hz
The ADS1251 is a single-channel converter and is offered in an SO-8 package. It is pin-compatible with the faster ADS1252 (41.7k Hz data rate).APPLICATIONS
CARDIAC DIAGNOSTICS DIRECT THERMOCOUPLE INTERFACES BLOOD ANALYSIS INFRARED PYROMETERS LIQUID/GAS CHROMATOGRAPHY PRECISION PROCESS CONTROL
ADS1251
4th-Order
Digital Serial
Filter Interface DOUT/DRDY
–VIN Modulator
+VDD GND
Control
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.
PRODUCTION DATA information is current as of publication date. Copyright © 2001-2003, Texas Instruments Incorporated Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
www.ti.com
Page Summary Contents For Texas Instruments ADS1251 24-Bit, 20kHz, Low-Power Analog-to-Digital Converter Data Sheet
Manual Details
| Brand | Texas Instruments |
|---|---|
| Pages | 17 |
| File Size | 318.35 KB |
| Published | June 20, 2026 |
Enter the captcha to get the download link:
Frequently Asked Questions
What is the effective resolution and noise performance of the ADS1251?
It offers 19 bits of effective resolution with a low rms noise of 1.5 ppm (differential inputs).
What are the general operating conditions for this converter?
The device operates from –40°C to 85°C and uses a single +5V supply.
How much power does the ADS1251 consume at typical data rates?
It draws approximately 8mW at a 20kHz data rate and 5mW at a 10kHz data rate.