AD7657

PRODUCTION

250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar, 14-Bit A/D Converter

Data Sheet (Rev. D) Product Selection Table

Part Models: 3
1ku List Price: Starting From $12.48

Viewing:

Overview

6 independent ADCs
True bipolar analog inputs
Pin-/software-selectable ranges: ±10 V, ±5 V
Fast throughput rate: 250 kSPS
iCMOS process technology
Wide input bandwidth 86.5 dB SNR at 50 kHz input frequency

Low power 140 mW at 250 kSPS with 5 V supplies
On-chip reference and reference buffers
Parallel, serial, and daisy-chain interface modes
High speed serial interface SPI^®-/QSPI^™-/MICROWIRE^™-/DSP-compatible
Standby mode: 100 µW maximum
64-lead LQFP

The AD7656 / AD7657 / AD7658 contain six 16-/14-/12-bit, fast, low power, successive approximation ADCs all in the one package that is designed on the iCMOS^™ process (industrial CMOS). iCMOS is a process combining high voltage silicon with submicron CMOS and complementary bipolar technologies. It enables the development of a wide range of high performance analog ICs, capable of 33 V operation in a footprint that no previous generation of high voltage parts could achieve. Unlike analog ICs using conventional CMOS processes, iCMOS components can accept bipolar input signals while providing increased performance, which dramatically reduces power consumption and package size.

The AD7656 / AD7657 / AD7658 feature throughput rates up to 250 kSPS. The parts contain low noise, wide bandwidth, track-and-hold amplifiers that can handle input frequencies up to 12 MHz.

The conversion process and data acquisition are controlled using CONVST signals and an internal oscillator. Three CONVST pins allow independent, simultaneous sampling of the three ADC pairs. The AD7656 / AD7657 / AD7658 all have a high speed parallel and serial interface, allowing the devices to interface with microprocessors or DSPs. In serial interface mode, the parts have a daisy-chain feature that allows multiple ADCs to connect to a single serial interface. The AD7656 / AD7657 / AD7658 can accommodate true bipolar input signals in the ±4 × V_REF range and ±2 × V_REF range. The AD7656 / AD7657 / AD7658 also contain an on-chip 2.5 V reference.

For reduced decoupling requirements visit the AD7657-1 product page

PRODUCT HIGHLIGHTS

Six 16-/14-/12-bit, 250 kSPS ADCs on board.
Six true bipolar, high impedance analog inputs.
Parallel and high speed serial interfaces.

APPLICATIONS

Power line monitoring systems
Instrumentation and control systems
Multi-axis positioning systems

Part Models: 3
1ku List Price: Starting From $12.48

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
AD7657BSTZ	64-Lead LQFP (10mm x 10mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD7657BSTZ-REEL	64-Lead LQFP (10mm x 10mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD7657YSTZ	64-Lead LQFP (10mm x 10mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Dec 1, 2009 - 09_0258 AD7657 and AD7658 Data Sheet Update
		Material_Report PCN09_0258_Form
AD7657BSTZ	PRODUCTION
AD7657BSTZ-REEL	PRODUCTION
AD7657YSTZ	PRODUCTION
Nov 16, 2009 - 06_0157 Qualification of the 8" H6 Thin Film BiPolar Wafer Fab Process at Analog Devices, Limerick, Ireland
		Material_Report PCN06_0157_Form RQR03599A
AD7657BSTZ	PRODUCTION
AD7657BSTZ-REEL	PRODUCTION
AD7657YSTZ	PRODUCTION
Jan 5, 2009 - 07_0077 Certification of STATSChipPAC Shanghai, China and AMKOR Philippines as additional sources for Assembly & Test of QFP Packages
		07_0077Rev D_LQFP_Dec17 07_0077Rev D_MQFP_Dec15 07_0077Rev D_Obsolesence_Dec15 07_0077Rev D_TQFP_Dec15 Material_Report PCN07_0077_Form QFP Transfer Qualification Results-tests_DEC12CL
AD7657BSTZ	PRODUCTION
AD7657BSTZ-REEL	PRODUCTION
AD7657YSTZ	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts	Product Life Cycle	Description
Operational Amplifiers (Op Amps) 7
ADA4898-1	PRODUCTION	High Voltage, Low Noise, Low Distortion, Unity Gain Stable, High Speed Op Amp
AD8021	PRODUCTION	Low Noise, High Speed Amplifier for 16-Bit Systems
ADA4899-1	PRODUCTION	Unity-Gain Stable, Ultralow Distortion, 1 nV/√Hz Voltage Noise, High Speed Op Amp
AD8038	PRODUCTION	Low Power, 350 MHz Voltage Feedback Amplifiers

ADA4857-1	PRODUCTION	Ultralow Distortion, Low Power, Low Noise, High Speed Op Amp
ADA4841-1	PRODUCTION	Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier
AD8597	PRODUCTION	Ultralow Distortion, Ultralow Noise Op Amp (single)
Voltage References 6
AD780	PRODUCTION	2.5 V/3.0 V High Precision Reference
ADR431	PRODUCTION	Ultralow Noise XFET^® Voltage References with Current Sink and Source Capability
REF192	PRODUCTION	2.5V Precision Micropower, Low Dropout, Low Voltage Reference
ADR441	PRODUCTION	Ultralow Noise, LDO XFET^® 2.5V Voltage Reference w/Current Sink and Source
AD1582	PRODUCTION	2.5V Micropower, Precisions Series Mode Voltage References
ADR391	PRODUCTION	2.5V Micropower, Low Noise Precision Voltage Reference with Shutdown

Evaluation Kits

AD7657_evaluation_kit

Buy Now View Details

Product Details

The EVAL-AD7657CBZ is a fully featured evaluation kit for the AD7657. This board operates in stand alone mode or in conjunction with the Evaluation Controller board . When operated with the Evaluation Controller board, software is provided enabling the user to perform detailed analysis of the ADC's performance. This software includes the technical note describing the operation and set up of the evaluation board in standalone operation or when operated with the Evaluation Controller board.