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AD7381

Part Number	AD7381
Manufacturer	Analog Devices
Description	14-Bit SAR ADCs
Published	May 14, 2019
Detailed Description	Data Sheet Dual, Simultaneous Sampling, 16-Bit/14-Bit, 4 MSPS SAR ADCs, Differential Inputs AD7380/AD7381 FEATURES 16-...
Datasheet	AD7381 PDF File

Overview

Data Sheet Dual, Simultaneous Sampling, 16-Bit/14-Bit, 4 MSPS SAR ADCs, Differential Inputs AD7380/AD7381 FEATURES 16-bit/14-bit ADC family Dual simultaneous sampling Fully differential analog inputs 4 MSPS throughput conversion rate SNR (typical) 92.
5 dB, VREF = 3.
3 V external at AD7380 (16-bit) 85.
4 dB, VREF = 3.
3 V external at AD7381 (14-bit) 101 dB with ×16 OSR On-chip oversampling function Resolution boost function INL (maximum) 2.
0 LSBs at 16-bit 1.
0 LSB at 14-bit 2.
5 V internal reference High speed serial interface −40°C to +125°C operation 16-lead LFCSP, 3 mm × 3 mm Wide common-mode range Alert function APPLICATIONS Motor control position feedback Motor control current sense Sonar Power quality Data acquisition systems Erbium doped fiber amplifier (EDFA) applications I and Q demodulation GENERAL DESCRIPTION The AD7380/AD7381 are a 16-bit and 14-bit pin-compatible family of dual simultaneous sampling, high speed, low power, successive approximation register (SAR) analog-to-digital converters (ADCs) that operate from a 3.
0 V to 3.
6 V power supply and feature throughput rates up to 4 MSPS.
The analog input type is differential, accepts a wide common-mode input voltage, and is sampled and converted on the falling edge of CS.
An integrated on-chip oversampling block improves dynamic range and reduces noise at lower bandwidths.
A buffered internal 2.
5 V reference is included.
Alternatively, an external reference up to 3.
3 V can be used.
The conversion process and data acquisition use standard control inputs allowing simple interfacing to microprocessors or digital signal processors (DSPs).
The device is compatible with 1.
8 V, 2.
5 V, and 3.
3 V interfaces using the separate logic supply.
The AD7380/AD7381 are available in a 16-lead lead frame chip scale package (LFCSP) with operation specified from −40°C to +125°C.
PRODUCT HIGHLIGHTS 1.
Dual simultaneous sampling and conversion with two complete ADC functions.
2.
Pin-compatible product family.
3.
High 4 MSPS thro...

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