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AD7793BRUZ-REEL

更新时间： 2024-11-05 13:00:07

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
18页	239K
描述
3-Channel, Low Noise, Low Power, 24-Bit Sigma Delta ADC with On-Chip In-Amp and Reference

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AD7793BRUZ-REEL 数据手册

Low Power, 16/24-Bit Sigma-Delta ADC with

Low-Noise In-Amp and Embedded Reference

Preliminary Technical Data

AD7792/AD7793

REFIN(+)/AIN3(+)

GND

REFIN(-)/AIN3(-)

FEATURES

Resolution:

BIAS

AD7792: 16-Bit

AD7793: 24-Bit

BANDGAP

REFERENCE

GND

SERIAL

INTERFACE

AND

DOUT/RDY

DIN

AIN1(+)

Low Noise Programmable Gain Instrumentation-Amp

RMS noise: 80 nV (Gain = 64)

Bandgap Reference with 5ppm/ C Drift typ

Power

Supply: 2.7 V to 5.25 V operation

Normal: 400 µA typ

SIGMA DELTA

ADC

IN-AMP

MUX

AIN1(-)

AIN2(+)

SCLK

CONTROL

LOGIC

AIN2(-)

GND

INTERNAL

CLOCK

DVDD

IOUT1

IOUT2

AD7792/AD7793

CLK

Power-down: 1 µA max

Update Rate: 4 Hz to 500 Hz

Figure 1.

Simultaneous 50 Hz/60 Hz Rejection

Internal Clock Oscillator

GENERAL DESCRIPTION

Programmable Current Sources (10 µA/200 µA/1 mA)

On-Chip Bias Voltage Generator

100 nA Burnout Currents

Independent Interface Power Supply

16-Lead TSSOP Package

The AD7792/AD7793 is a low power, complete analog front end

for low frequency measurement applications. The

AD7792/AD7793 contains a low noise 16/24-bit ∑-∆ ADC with

three differential analog inputs. The on-chip low noise

instrumentation amplifier means that signals of small

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

setting of 64, the rms noise is 80 nV when the update rate equals

16.6 Hz.

INTERFACE

3-wire serial

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

Schmitt trigger on SCLK

The device contains a precision low noise, low drift internal

bandgap reference for absolute measurements. An external

reference can also be used if ratiometric measurements are re-

quired. On-chip programmable excitation current sources can

be used to supply a constant current to RTDs and thermistors

while the 100 nA burnout currents can be used to ensure that

the sensors connected to the ADC are not burnt out. For ther-

mocouple applications, the on-chip bias voltage generator steps

up the common mode voltage from the thermocouple so that it

is within the ADC’s allowable range.

APPLICATIONS

Thermocouple Measurements

RTD Measurements

Thermistor Measurements

FUNCTIONAL BLOCK DIAGRAM

The device can be operated with the internal clock or, alterna-

tively, an external clock can be used if synchronizing several

devices. The output data rate from the part is software pro-

grammable and can be varied from 4 Hz to 500 Hz.

The part operates with a power supply from 2.7 V to 5.25 V. It

consumes a current of 450 uA maximum and is housed in a 16-

lead TSSOP package.

REV.PrF

6/04.

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

registered trademarks are the property of their respective companies.

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

Tel: 781.329.4700

Fax: 781.326.8703

www.analog.com

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AD7793BRUZ-REEL 替代型号

型号	品牌	替代类型	描述	数据表
AD7793BRUZ	ADI	完全替代	3-Channel, Low Noise, Low Power, 24-Bit Sigma Delta ADC with On-Chip In-Amp and Reference
AD7793BRU-REEL	ADI	完全替代	3-Channel, Low Noise, Low Power, 16-/24-Bit Î
AD7793BRU	ADI	类似代替	3-Channel, Low Noise, Low Power, 16-/24-Bit Î

与AD7793BRUZ-REEL相关器件

型号	品牌	获取价格	描述	数据表
AD7793BRUZ-REEL1	ADI	获取价格	3-Channel, Low Noise, Low Power, 16-/24-Bit Î
AD7794	ADI	获取价格	Low Power, 24-Bit Sigma-Delta ADC with In-Amp and Embedded Reference (6 Channel)
AD7794_07	ADI	获取价格	6-Channel, Low Noise, Low Power, 24-/16-Bit Î
AD7794_15	ADI	获取价格	6-Channel, Low Noise, Low Power
AD7794BRU	ADI	获取价格	6-Channel, Low Noise, Low Power, 24-/16-Bit Î
AD7794BRU-REEL	ADI	获取价格	6-Channel, Low Noise, Low Power, 24-/16-Bit Î
AD7794BRUZ	ROCHESTER	获取价格	6-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO24, ROHS COMPLIANT, MO-153AD, TSSOP-24
AD7794BRUZ1	ADI	获取价格	6-Channel, Low Noise, Low Power, 24-/16-Bit Î
AD7794BRUZ-REEL	ROCHESTER	获取价格	6-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO24, ROHS COMPLIANT, MO-153AD, TSSOP-24
AD7794BRUZ-REEL1	ADI	获取价格	6-Channel, Low Noise, Low Power, 24-/16-Bit Î

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