AD7949BCPZ

$10.98

Description：IC ADC 14BIT SAR 20LFCSP
Series：PulSAR®

SKU:3694c82dd43a Category: Analog to Digital Converters (ADC) Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC ADC 14BIT SAR 20LFCSP
Series：PulSAR®
Mfr：Analog Devices Inc.
Package：Tray
Number of Bits：14
Sampling Rate (Per Second)：250k
Number of Inputs：8
Input Type：Differential, Pseudo-Differential, Single Ended
Data Interface：SPI, DSP
Configuration：MUX-S/H-ADC
Ratio - S/H:ADC：1:01
Number of A/D Converters：1
Architecture：SAR
Reference Type：External, Internal
Voltage - Supply, Analog：2.3V ~ 5.5V
Voltage - Supply, Digital：2.3V ~ 5.5V
Features：Temperature Sensor
Operating Temperature：-40°C ~ 85°C
Package / Case：20-WFQFN Exposed Pad, CSP
Supplier Device Package：20-LFCSP (4x4)
Mounting Type：Surface Mount

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AD7949BCPZ

Overview

The AD7949BCPZ is an 8-channel, 14-bit PulSAR analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It features a charge redistribution successive approximation register architecture with no missing codes and operates from a single power supply ranging from 2.3 V to 5.5 V. The device supports a throughput of up to 250 kSPS at full bandwidth when powered between 4.5 V and 5.5 V. It includes an internal selectable reference of 2.5 V or 4.096 V, a temperature sensor, and a channel sequencer. The component utilizes a serial interface compatible with SPI, MICROWIRE, QSPI, and DSP standards, housed in a 20-lead LFCSP package.

Feature Summary

Integrates an 8-channel multiplexer supporting unipolar single-ended, differential, and pseudobipolar input configurations.
Includes an internal low-drift voltage reference system with selectable output voltages and an integrated buffer.
Features a dedicated channel sequencer for continuous scanning and a selectable one-pole low-pass filter.
Provides a flexible digital interface compatible with multiple serial protocols and a separate logic supply pin.

Applications

Multichannel system monitoring
Battery-powered equipment
Medical instruments such as ECG/EKG
Data acquisition systems
Process control instrumentation

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and tape/reel specifications. Ensure that the selected variant matches the required operating temperature range and power supply constraints for the target application environment.

Selection Notes

Select this component when high resolution and moderate speed are required for multi-channel signal acquisition. Consider the internal reference options to simplify board design, or utilize external references for higher precision requirements. Evaluate the serial interface compatibility with the host microcontroller to ensure proper timing configuration.

Part Context

This part belongs to the AD7949 family of 14-bit, 8-channel PulSAR ADCs. It shares architectural similarities with other members like the AD7682 and AD7689 but offers distinct channel counts and resolution combinations within the broader product line.