AD7688

更新时间： 2024-09-16 04:30:47

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
24页	527K
描述
16-Bit, +/-0.65 LSB INL, 500 kSPS PulSAR Differential ADC in MSOP/QFN

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AD7688 数据手册

16-Bit, +/-0.65 LSB INL, 500 kSPS PulSAR^®

Differential ADC in MSOP/QFN

Preliminary Technical Data

AD7693

FEATURES

APPLICATION DIAGRAM

+2.5V TO +5V

+5V

16-bit resolution with no missing codes

Throughput: 500 kSPS

INL: +/-0.25 LSB typical, 0.65 LSB max ( 10 ppm of FSR)

Dynamic range: 96.5 dB typical @ 500 kSPS

SINAD: 96 dB typical @ 1 kHz, REF = 5V

THD: −120 dB typical @ 1 kHz. REF = 5V

True differential analog input range: VREF

0 V to V_REFwith V_REFup to V_DDon both inputs

No pipeline delay

VIO

SDI

+1.8V TO VDD

REF VDD

GND

IN+

IN–

3- OR 4-WIRE

SCK

SDO

CNV

INTERFACE

±10V, ±5V, ...

(SPI, DAISY CHAIN, CS)

ADA4941-1

AD7693

Figure 2.

Single-supply 5 V operation with

1.8 V/2.5 V/3 V/5 V logic interface

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

Daisy-chain multiple ADCs and busy indicator

Power dissipation

4 mW @ 5 V/100 kSPS

40 μW @ 5 V/1 kSPS

Standby current: 1 nA

10-lead package: MSOP (MSOP-8 size) and

3 mm × 3 mm QFN¹(LFCSP) (SOT-23 size)

Table 1. MSOP, QFN¹(LFCSP)/SOT-23

14-/16-/18-Bit PulSAR ADC

400 kSPS

500 kSPS Driver

100

kSPS

250

kSPS

ADC

Type

18-Bit

AD7691

AD7690

ADA4941-1

ADA4841-x

ADA4941-1

ADA4841-x

16-Bit True

Differential

AD7684 AD7687

AD7688

AD7693

AD7686

16-Bit Pseudo AD7683 AD7685

ADA4841-x

Pin-for-pin compatible with the AD7687, AD7688 and 18-bit

AD7690 and AD7691

Differential/

Unipolar

AD7680 AD7694

14-Bit

AD7940 AD7942

AD7946

ADA4841-x

APPLICATIONS

¹QFN package in development. Contact sales for samples and availability.

Battery-powered equipment

Data acquisitions

GENERAL DESCRIPTION

Seismic data acquisition systems

DVMs

The AD7693 is a 16-bit, successive approximation, analog-to-

digital converter (ADC) that operates from a single power supply,

VDD. 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. On the CNV rising edge, it

samples the voltage difference between the IN+ and IN− pins.

The voltages on these pins swing in opposite phase between 0 V

and REF. The reference voltage, REF, is applied externally and

can be set up to the supply voltage, VDD.

Instrumentation

Medical instruments

Its power scales linearly with throughput.

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 VIO supply.

The AD7693 is housed in a 10-lead MSOP or a 10-lead QFN¹

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

Figure 1. Integral Nonlinearity vs. Code

¹QFN package in development. Contact sales for samples and availability.

Rev. PrB

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

12 3 4 5 6 7...24

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