AD7792BRU

更新时间： 2024-11-26 12:27:59

品牌	Logo	应用领域
亚德诺 - ADI		仪表放大器
页数	文件大小	规格书
32页	661K
描述
3-Channel, Low Noise, Low Power, 16-/24-Bit Î£-Î ADC with On-Chip In-Amp and Reference

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AD7792BRU 数据手册

3-Channel, Low Noise, Low Power, 16-/24-Bit

∑-Δ ADC with On-Chip In-Amp and Reference

AD7792/AD7793

FEATURES

FUNCTIONAL BLOCK DIAGRAM

GND

REFIN(+)/AIN3(+) REFIN(–)/AIN3(–)

Up to 23 bits effective resolution

RMS noise

40 nV @ 4.17 Hz

85 nV @ 16.7 Hz

BIAS

BAND GAP

REFERENCE

GND

Current: 400 μA typical

AIN1(+)

AIN1(–)

AIN2(+)

AIN2(–)

DOUT/RDY

DIN

SERIAL

INTERFACE

AND

MUX

Power-down: 1 μA maximum

Low noise programmable gain instrumentation amp

Band gap reference with 4 ppm/°C drift typical

Update rate: 4.17 Hz to 470 Hz

3 differential inputs

Σ-Δ

ADC

BUF

IN-AMP

SCLK

CONTROL

LOGIC

GND

IOUT1

IOUT2

INTERNAL

CLOCK

AD7792: 16-BIT

AD7793: 24-BIT

Internal clock oscillator

CLK

Figure 1.

Simultaneous 50 Hz/60 Hz rejection

Programmable current sources

On-chip bias voltage generator

Burnout currents

GENERAL DESCRIPTION

The AD7792/AD7793 are low power, low noise, complete

analog front ends for high precision measurement applications.

The AD7792/AD7793 contain a low noise 16-/24-bit ∑-Δ ADC

with three differential analog inputs. The on-chip, low noise

instrumentation amplifier means that signals of small ampli-

tude can be interfaced directly to the ADC. With a gain

setting of 64, the rms noise is 40 nV when the update rate

equals 4.17 Hz.

Power supply: 2.7 V to 5.25 V

–40°C to +105°C temperature range

Independent interface power supply

16-lead TSSOP package

Interface

3-wire serial

SPI®, QSPI™, MICROWIRE™, and DSP compatible

Schmitt trigger on SCLK

The devices contain a precision low noise, low drift internal

band gap reference and can accept an external differential

reference. Other on-chip features include programmable

excitation current sources, burnout currents, and a bias voltage

generator. The bias voltage generator sets the common-mode

voltage of a channel to AV_DD/2.

APPLICATIONS

Thermocouple measurements

RTD measurements

Thermistor measurements

Gas analysis

The devices can be operated with either the internal clock or an

external clock. The output data rate from the parts is software-

programmable and can be varied from 4.17 Hz to 470 Hz.

Industrial process control

Instrumentation

Portable instrumentation

Blood analysis

Smart transmitters

Liquid/gas chromatography

6-digit DVM

The parts operate with a power supply from 2.7 V to 5.25 V.

They consume a current of 400 μA typical and are housed in a

16-lead TSSOP package.

Rev. B

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

rights of third parties that may result from its 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 and registeredtrademarks arethe 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

中文翻译

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AD7792BRU 替代型号

型号	品牌	替代类型	描述	数据表
AD7792BRU-REEL	ADI	完全替代	3-Channel, Low Noise, Low Power, 16-/24-Bit Î

与AD7792BRU相关器件

型号	品牌	获取价格	描述	数据表
AD7792BRU-REEL	ADI	获取价格	3-Channel, Low Noise, Low Power, 16-/24-Bit Î
AD7792BRUZ1	ADI	获取价格	3-Channel, Low Noise, Low Power, 16-/24-Bit Î
AD7792BRUZ-REEL	ROCHESTER	获取价格	3-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO16, LEAD FREE, MO-153-AB, TSSOP-16
AD7792BRUZ-REEL1	ADI	获取价格	3-Channel, Low Noise, Low Power, 16-/24-Bit Î
AD7793	ADI	获取价格	Low Power, 16/24-Bit Sigma-Delta ADC with Low-Noise In-Amp and Embedded Reference
AD7793B	ADI	获取价格	Low Power, 16/24-Bit Sigma-Delta ADC with Low-Noise In-Amp and Embedded Reference
AD7793BRU	ADI	获取价格	3-Channel, Low Noise, Low Power, 16-/24-Bit Î
AD7793BRU	ROCHESTER	获取价格	3-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO16, MO-153-AB, TSSOP-16
AD7793BRU-REEL	ADI	获取价格	3-Channel, Low Noise, Low Power, 16-/24-Bit Î
AD7793BRUZ	ROCHESTER	获取价格	3-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO16, LEAD FREE, MO-153-AB, TSSOP-16

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