Datasheet > AD7657_15

AD7657_15

更新时间： 2024-11-22 01:12:11

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
32页	588K
描述
250 kSPS, 6-Channel, Simultaneous

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AD7657_15 数据手册

250 kSPS, 6-Channel, Simultaneous

Sampling, Bipolar 16-/14-/12-Bit ADC

Data Sheet

AD7656/AD7657/AD7658

FEATURES

FUNCTIONAL BLOCK DIAGRAM

CONVST A

CONVST B CONVST C AV

6 independent ADCs

True bipolar analog inputs

Pin-/software-selectable ranges: 10 V, 5 V

Fast throughput rate: 250 kSPS

iCMOS process technology

Low power

140 mW at 250 kSPS with 5 V supplies

Wide input bandwidth

86.5 dB SNR at 50 kHz input frequency

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

CLK

REF

SER/PAR

CONTROL

LOGIC

OSC

DRIVE

STBY

BUF

OUTPUT

DRIVERS

DOUT A

16-/14-/12-BIT SAR

T/H

SCLK

T/H

OUTPUT

DRIVERS

DOUT B

OUTPUT

DRIVERS

DOUT C

16-/14-/12-BIT SAR

DATA/

CONTROL

LINES

OUTPUT

DRIVERS

T/H

APPLICATIONS

AD7656/AD7657/AD7658

AGND

DGND

Power line monitoring systems

Instrumentation and control systems

Multi-axis positioning systems

Figure 1.

GENERAL DESCRIPTION

The AD7656/AD7657/AD7658¹contain 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 technol-

ogies. 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 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_REFrange and 2 × V_REFrange. The AD7656/

AD7657/AD7658 also contain an on-chip 2.5 V reference.

PRODUCT HIGHLIGHTS

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.

1. Six 16-/14-/12-bit, 250 kSPS ADCs on board.

2. Six true bipolar, high impedance analog inputs.

3. Parallel and high speed serial interfaces.

¹Protected by U.S. Patent No. 6,731,232.

Rev. D

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rightsof third parties that may result fromits use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks andregisteredtrademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

www.analog.com

12 3 4 5 6 7...32

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与AD7657_15相关器件

型号	品牌	获取价格	描述	数据表
AD7657-1	ADI	获取价格	250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar, 16-/14-/12-Bit ADC
AD7657-1_15	ADI	获取价格	250 kSPS, 6-Channel, Simultaneous
AD7657-1BSTZ	ADI	获取价格	6-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQFP64, LEAD FREE, MS-026BCD, LQF
AD7657-1BSTZ-500RL7	ADI	获取价格	IC 6-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQFP64, LEAD FREE, MS-026BCD,
AD7657-1BSTZ-REEL	ADI	获取价格	IC 6-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQFP64, LEAD FREE, MS-026BCD,
AD7657-1YSTZ	ADI	获取价格	IC 6-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQFP64, LEAD FREE, MS-026BCD,
AD7657-1YSTZ-500RL7	ADI	获取价格	IC 6-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQFP64, LEAD FREE, MS-026BCD,
AD7657-1YSTZ-REEL	ADI	获取价格	IC 6-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQFP64, LEAD FREE, MS-026BCD,
AD7657BSTZ	ADI	获取价格	250 kSPS, 6-Channel,Simultaneous Sampling, Bipolar 12/14/16-Bit ADC
AD7657BSTZ-1	ADI	获取价格	250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar, 16-/14-/12-Bit ADC

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