AD7687BRMZ

更新时间： 2024-11-06 12:52:23

品牌	Logo	应用领域
亚德诺 - ADI		转换器模数转换器光电二极管 PC
页数	文件大小	规格书
28页	469K
描述
16-Bit, 1.5 LSB INL, 250 kSPS PulSARâ¢ Differential ADC in MSOP/QFN

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AD7687BRMZ 数据手册

16-Bit, 1.5 LSB INL, 250 kSPS PulSAR™

Differential ADC in MSOP/QFN

Data Sheet

AD7687

FEATURES

16-bit resolution with no missing codes

Throughput: 250 kSPS

APPLICATION DIAGRAM

0.5V TO 5V

2.5 TO 5V

INL: ±0.4 LSB typ, ±1.5 LSB max (±23 ppm of FSR)

Dynamic range: 96.5 dB

S/(N + D): 95.5 dB @ 20 kHz

THD: −118 dB @ 20 kHz

True differential analog input range

±±_REF

VREF

VIO

1.8V TO VDD

REF VDD

SDI

SCK

SDO

CNV

IN+

AD7687

3- OR 4-WIRE INTERFACE

(SPI, DAISY CHAIN, CS)

IN–

VREF

GND

0 ± to ±_REFwith ±_REFup to ±DD on both inputs

No pipeline delay

Figure 2.

Single-supply 2.3 ± to 5.5 ± operation with

1.8 ±/2.5 ±/3 ±/5 ± logic interface

Serial interface SPI®/QSPI™/MICROWIRE™/DSP-compatible

Daisy-chain multiple ADCs and BUSY indicator

Power dissipation

1.35 mW @ 2.5 ±/100 kSPS, 4 mW @ 5 ±/100 kSPS, and

1.4 μW @ 2.5 ±/100 SPS

Standby current: 1 nA

Table 1. MSOP, QFN (LFCSP)/SOT-23 16-Bit PulSAR ADC

Type

100 kSPS

AD7684

AD7683

250 kSPS

AD7687

AD7685

AD7694

500 kSPS

AD7688

AD7686

True Differential

Pseudo

Differential/Unipolar

Unipolar

AD7680

10-lead MSOP (MSOP-8 size) and

3 mm × 3 mm QFN (LFCSP) (SOT-23 size)

Pin-for-pin compatible with AD7685, AD7686, and AD7688

GENERAL DESCRIPTION

The AD7687 is a 16-bit, charge redistribution, successive

approximation, analog-to-digital converter (ADC) that operates

from a single power supply, VDD, between 2.3 V to 5.5 V. It

contains a low power, high speed, 16-bit sampling ADC with no

missing codes, an internal conversion clock, and a versatile

serial interface port. The part also contains a low noise, wide

bandwidth, short aperture delay track-and-hold circuit. On the

CNV rising edge, it samples the voltage difference between IN+

and IN− pins. The voltages on these pins usually swing in

opposite phase between 0 V to REF. The reference voltage, REF,

is applied externally and can be set up to the supply voltage.

APPLICATIONS

Battery-powered equipment

Data acquisitions

Instrumentation

Medical instruments

Process controls

1.5

POSITIVE INL = +0.32LSB

NEGATIVE INL = –0.41LSB

1.0

Its power scales linearly with throughput.

0.5

The SPI-compatible serial interface also features the ability,

using the SDI input, to daisy-chain several ADCs on a single,

3-wire bus and provides an optional BUSY indicator. It is

compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate

supply VIO.

–0.5

The AD7687 is housed in a 10-lead MSOP or a 10-lead QFN

(LFCSP) with operation specified from −40°C to +85°C.

–1.0

–1.5

16384

32768

CODE

49152

65535

Figure 1. Integral Nonlinearity vs. Code

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

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AD7687BRMZ 替代型号

型号	品牌	替代类型	描述	数据表
AD7687BRMZRL7	ADI	完全替代	16-Bit, 1.5 LSB INL, 250 kSPS PulSAR™ Differential ADC in MSOP/QFN
AD7685BRMZ	ADI	类似代替	16-Bit, 250 kSPS PulSAR ADC in MSOP/QFN
AD7691BRMZ	ADI	类似代替	18-Bit, 1.5 LSB INL, 250 kSPS PulSAR Differential ADC in MSOP/QFN

与AD7687BRMZ相关器件

型号	品牌	获取价格	描述	数据表
AD7687BRMZRL7	ADI	获取价格	16-Bit, 1.5 LSB INL, 250 kSPS PulSAR™ Differential ADC in MSOP/QFN
AD7688	ADI	获取价格	16-Bit, +/-0.65 LSB INL, 500 kSPS PulSAR Differential ADC in MSOP/QFN
AD76881	ADI	获取价格	14-Bit, 500 kSPS PulSAR ADC in MSOP
AD7688BCPRL7	ADI	获取价格	IC 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO10, 3 X 3 MM, QFN-10, Anal
AD7688BCPWP	ADI	获取价格	IC 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO10, 3 X 3 MM, QFN-10, Anal
AD7688BCPZRL	ADI	获取价格	16-Bit, 1.5 LSB INL, 500 kSPS PulSAR Differential ADC in MSOP/QFN
AD7688BCPZRL7	ADI	获取价格	16-Bit, 1.5 LSB INL, 500 kSPS PulSAR Differential ADC in MSOP/QFN
AD7688BRM	ROCHESTER	获取价格	1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO10, MO-187BA, MSOP-10
AD7688BRMRL7	ROCHESTER	获取价格	1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO10, MO-187BA, MSOP-10
AD7688BRMRL7	ADI	获取价格	16-Bit, 1.5 LSB INL, 500 kSPS PulSAR Differential ADC in MSOP/QFN

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