ADS1251U/2K5

$10.90

Description：IC ADC 24BIT SIGMA-DELTA 8SOIC
Series：-

SKU:4b1319e98e2b Category: Analog to Digital Converters (ADC) Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC ADC 24BIT SIGMA-DELTA 8SOIC
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)
Number of Bits：24
Sampling Rate (Per Second)：20k
Number of Inputs：1
Input Type：Differential
Data Interface：SPI
Configuration：ADC
Ratio - S/H:ADC：-
Number of A/D Converters：1
Architecture：Sigma-Delta
Reference Type：External
Voltage - Supply, Analog：5V
Voltage - Supply, Digital：5V
Features：-
Operating Temperature：-40°C ~ 85°C
Package / Case：8-SOIC (0.154", 3.90mm Width)
Supplier Device Package：8-SOIC
Mounting Type：Surface Mount
Grade：-
Qualification：-

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ADS1251U/2K5

Overview

The ADS1251U/2K5 is a single-channel, 24-bit Delta-Sigma analog-to-digital converter (ADC) manufactured by Texas Instruments. It operates on a single +5V supply with analog and digital voltage ranges of 4.75 V to 5.25 V. The device supports data rates up to 20 kS/s, achieving 19 effective bits at maximum speed. Key electrical parameters include a differential input type, external reference support (0.5 V to 5 V), and low power consumption of 8 mW typical at 20 kS/s. It features ±1 LSB DNL, ±0.0015% FSR INL, and 50/60 Hz rejection capabilities. The component is housed in an 8-pin SOIC package and functions within a temperature range of -40°C to +85°C.

Feature Summary

Provides true 24-bit no missing codes performance with wide dynamic range capability
Supports flexible two-wire synchronous serial interface for low-cost isolation applications
Includes dedicated sync mode and power-down mode for multi-device synchronization and energy efficiency

Applications

Cardiac diagnostics and medical instrumentation
Industrial process control systems
Chromatography analysis equipment

Procurement Notes

Verify the specific suffix /2K5 indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status and moisture sensitivity level requirements against storage conditions. Ensure the external reference voltage matches the 0.5 V to 5 V operational range specified for the device.

Selection Notes

Select this component for high-precision, low-speed measurements requiring 24-bit resolution. Consider the ADS1252 if higher sampling rates are needed, as it offers pin compatibility. Verify that the system can accommodate the required external reference voltage and that the SPI interface timing meets the controller specifications.

Part Context

This part belongs to the ADS1251 series of precision ADCs from Texas Instruments. It shares architectural similarities with other devices in the family but is distinct in its single-channel configuration and 8-pin SOIC form factor. It serves as a foundational component for applications demanding high accuracy over moderate bandwidths.