Datasheet > AD7124-8

AD7124-8

更新时间： 2024-11-27 01:07:07

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
93页	1676K
描述
8-Channel, Low Noise, Low Power, 24-Bit Sigma-Delta ADC with PGA and Reference

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AD7124-8 数据手册

8-Channel, Low Noise, Low Power, 24-Bit,

Sigma-Delta ADC with PGA and Reference

AD7124-8

Data Sheet

Low-side power switch

General-purpose outputs

Multiple filter options

FEATURES

3 power modes

RMS noise

Internal temperature sensor

Self and system calibration

Sensor burnout detection

Automatic channel sequencer

Per channel configuration

Low power: 24 nV rms at 1.17 SPS, gain = 128 (255 µA typical)

Mid power: 20 nV rms at 2.34 SPS, gain = 128 (355 µA typical)

Full power: 23 nV rms at 9.4 SPS, gain = 128 (930 µA typical)

Up to 22 noise free bits in all power modes (gain = 1)

Output data rate

Power supply: 2.7 V to 3.6 V and 1.8 V

Independent interface power supply

Power-down current: 5 µA maximum

Temperature range: −40°C to +125°C

32-lead LFCSP

3-wire or 4-wire serial interface

SPI, QSPI™, MICROWIRE™, and DSP compatible

Schmitt trigger on SCLK

Full power: 9.38 SPS to 19,200 SPS

Mid power: 2.34 SPS to 4800 SPS

Low power: 1.17 SPS to 2400 SPS

Rail-to-rail analog inputs for gains > 1

Simultaneous 50 Hz/60 Hz rejection at 25 SPS (single cycle

settling)

Diagnostic functions (which aid safe integrity level (SIL)

certification)

Crosspoint multiplexed analog inputs

8 differential/15 pseudo differential inputs

Programmable gain (1 to 128)

Band gap reference with 15 ppm/°C drift maximum (70 µA)

Matched programmable excitation currents

Internal clock oscillator

ESD: 4 kV

APPLICATIONS

Temperature measurement

Pressure measurement

Industrial process control

Instrumentation

On-chip bias voltage generator

Smart transmitters

FUNCTIONAL BLOCK DIAGRAM

REGCAPA

IOV

DD REGCAPD

REFOUT

REFIN1(+) REFIN1(–)

BANDGAP

REF

REFIN2(+)

REFIN2(–)

BIAS

1.9V

LDO

1.8V

LDO

CROSSPOINT

MUX

AIN0/IOUT/VBIAS

AIN1/IOUT/VBIAS

REFERENCE

AIN2/IOUT/VBIAS/P1

AIN3/IOUT/VBIAS/P2

AIN4/IOUT/VBIAS/P3

AIN5/IOUT/VBIAS/P4

AIN6/IOUT/VBIAS

BUFFERS

DOUT/RDY

BUF

SERIAL

INTERFACE

AND

CONTROL

LOGIC

VARIABLE

DIGITAL

FILTER

24-BIT

Σ-Δ ADC

BURNOUT

DETECT

DIN

PGA1

PGA2

AIN7/IOUT/VBIAS

SCLK

AIN8/IOUT/VBIAS

AIN9/IOUT/VBIAS

X-MUX

AIN10/IOUT/VBIAS

AIN11/IOUT/VBIAS

AIN12/IOUT/VBIAS

ANALOG

BUFFERS

CHANNEL

SEQUENCER

SYNC

CLK

AIN13/IOUT/VBIAS

AIN14/IOUT/VBIAS/REFIN2(+)

AIN15/IOUT/VBIAS/REFIN2(–)

GPOs

DIAGNOSTICS

TEMPERATURE

SENSOR

COMMUNICATIONS

POWER SUPPLY

SIGNAL CHAIN

DIGITAL

INTERNAL

CLOCK

DIAGNOSTICS

EXCITATION

CURRENTS

PSW

POWER

SWITCH

AD7124-8

DGND

Figure 1.

Rev. D

Document Feedback

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 owners.

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

Technical Support

www.analog.com

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与AD7124-8相关器件

型号	品牌	获取价格	描述	数据表
AD7124-8_17	ADI	获取价格	8-Channel, Low Noise, Low Power, 24-Bit Sigma-Delta ADC with PGA and Reference
AD7124-8BCPZ	ADI	获取价格	8-Channel, Low Noise, Low Power, 24-Bit, Sigma-Delta ADC with PGA and Reference
AD7124-8BCPZ-RL	ADI	获取价格	8-Channel, Low Noise, Low Power, 24-Bit Sigma-Delta ADC with PGA and Reference
AD7124-8BCPZ-RL7	ADI	获取价格	8-Channel, Low Noise, Low Power, 24-Bit Sigma-Delta ADC with PGA and Reference
AD712ACHIPS	ADI	获取价格	Dual Precision, Low Cost, High Speed, BiFET Op Amp
AD712AH	ADI	获取价格	Dual Precision, Low Cost, High Speed, BiFET Op Amp
AD712AH	ROCHESTER	获取价格	DUAL OP-AMP, 2000uV OFFSET-MAX, 4MHz BAND WIDTH, MBCY8, METAL CAN, TO-99, 8 PIN
AD712AH/+	ADI	获取价格	IC IC,OP-AMP,DUAL,BIPOLAR/JFET,CAN,8PIN,METAL, Operational Amplifier
AD712AQ	ADI	获取价格	Dual Precision, Low Cost, High Speed, BiFET Op Amp
AD712AQ/+	ADI	获取价格	IC,OP-AMP,DUAL,BIPOLAR/JFET,DIP,8PIN,CERAMIC

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