Datasheet > 转换器 > 模数转换器> AD7715ARU-3REEL7

AD7715ARU-3REEL7

更新时间： 2024-11-07 12:33:15

品牌	Logo	应用领域
亚德诺 - ADI		转换器模数转换器光电二极管
页数	文件大小	规格书
40页	495K
描述
3 V/5 V, 450 muA 16-Bit, Sigma-Delta ADC

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替代型号

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AD7715ARU-3REEL7 数据手册

3 V/5 V, 450 μA

16-Bit, Sigma-Delta ADC

AD7715

FUNCTIONAL BLOCK DIAGRAM

FEATURES

REF IN(–) REF IN(+)

Charge-balancing ADC

16-bits no missing codes

0.0015% nonlinearity

Programmable gain front end

Gains of 1, 2, 32 and 128

CHARGE BALANCING

ADC

Σ-∆

DIGITAL

AIN(+)

AIN(–)

MODULATOR

FILTER

BUFFER

PGA

Differential input capability

Three-wire serial interface

A = 1 TO 128

CLOCK

GENERATION

MCLK IN

MCLK OUT

RESET

SERIAL

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

Ability to buffer the analog input

3 V (AD7715-3) or 5 V (AD7715-5) operation

Low supply current: 450 μA maximum @ 3 V supplies

Low-pass filter with programmable output update

16-lead SOIC/PDIP/TSSOP

INTERFACE

SCLK

DIN

DOUT

DRDY

AD7715

AGND

DGND

Figure 1.

GENERAL DESCRIPTION

The AD7715 is a complete analog front end for low frequency

measurement applications. The part can accept low level input

signals directly from a transducer and outputs a serial digital

word. It employs a Σ-Δ conversion technique to realize up to

16 bits of no missing codes performance. The input signal is

applied to a proprietary programmable gain front end based

around an analog modulator. The modulator output is processed

by an on-chip digital filter. The first notch of this digital filter

can be programmed via the on-chip control register allowing

adjustment of the filter cutoff and output update rate.

CMOS construction ensures very low power dissipation, and

power-down mode reduces the standby power consumption to

50 μW typical. The part is available in a 16-lead, 0.3 inch-wide,

plastic dual-in-line package (PDIP) as well as a 16-lead 0.3 inch

wide small outline (SOIC_W) package and a 16-lead TSSOP

package.

PRODUCT HIGHLIGHTS

1. The AD7715 consumes less than 450 μA in total supply

current at 3 V supplies and 1 MHz master clock, making it

ideal for use in low-power systems. Standby current is less

than 10 μA.

2. The programmable gain input allows the AD7715 to accept

input signals directly from a strain gage or transducer

removing a considerable amount of signal conditioning.

3. The AD7715 is ideal for microcontroller or DSP processor

applications with a three-wire serial interface reducing the

number of interconnect lines and reducing the number

of optocouplers required in isolated systems. The part

contains on-chip registers which allow software control

over output update rate, input gain, signal polarity, and

calibration modes.

The AD7715 features a differential analog input as well as a

differential reference input. It operates from a single supply (3 V

or 5 V). It can handle unipolar input signal ranges of 0 mV to

20 mV, 0 mV to 80 mV, 0 V to 1.25 V and 0 V to 2.5 V. It can

also handle bipolar input signal ranges of 20 mV, 80 mV,

1.25 V and 2.5 V. These bipolar ranges are referenced to the

negative input of the differential analog input. The AD7715

thus performs all signal conditioning and conversion for a

single channel system.

The AD7715 is ideal for use in smart, microcontroller, or DSP-

based systems. It features a serial interface that can be configured

for three-wire operation. Gain settings, signal polarity, and

update rate selection can be configured in software using the

input serial port. The part contains self-calibration and system

calibration options to eliminate gain and offset errors on the

part itself or in the system.

4. The part features excellent static performance specifications

with 16-bits no missing codes, 0.0015ꢀ accuracy, and low

rms noise (<550 nV). Endpoint errors and the effects of

temperature drift are eliminated by on-chip calibration

options, which remove zero-scale and full-scale errors.

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

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

Fax: 781.461.3113

www.analog.com

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AD7715ARU-3REEL7 替代型号

型号	品牌	替代类型	描述	数据表
AD7715ARUZ-3REEL7	ADI	类似代替	3 V/5 V, 450 muA 16-Bit, Sigma-Delta ADC
AD7715ARUZ-3	ADI	类似代替	3 V/5 V, 450 muA 16-Bit, Sigma-Delta ADC
AD7715ARU-3REEL	ADI	类似代替	3 V/5 V, 450 Î¼A 16-Bit, Sigma-Delta ADC

与AD7715ARU-3REEL7相关器件

型号	品牌	获取价格	描述	数据表
AD7715ARU-5	ADI	获取价格	3 V/5 V, 450 uA 16-Bit, Sigma-Delta ADC
AD7715ARU-5REEL	ADI	获取价格	3 V/5 V, 450 muA 16-Bit, Sigma-Delta ADC
AD7715ARU-5REEL7	ADI	获取价格	3 V/5 V, 450 muA 16-Bit, Sigma-Delta ADC
AD7715ARUZ-3	ADI	获取价格	3 V/5 V, 450 muA 16-Bit, Sigma-Delta ADC
AD7715ARUZ-31	ADI	获取价格	3 V/5 V, 450 Î¼A 16-Bit, Sigma-Delta ADC
AD7715ARUZ-3REEL7	ADI	获取价格	3 V/5 V, 450 muA 16-Bit, Sigma-Delta ADC
AD7715ARUZ-3REEL71	ADI	获取价格	3 V/5 V, 450 Î¼A 16-Bit, Sigma-Delta ADC
AD7715ARUZ-5	ADI	获取价格	3 V/5 V, 450 muA 16-Bit, Sigma-Delta ADC
AD7715ARUZ-51	ADI	获取价格	3 V/5 V, 450 Î¼A 16-Bit, Sigma-Delta ADC
AD7715ARUZ-5REEL	ADI	获取价格	IC 1-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO16, MO-153AB, TSSOP-16, Analog to Digit

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