AD7983 データシートの表示（PDF） - Analog Devices

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AD7983

16-Bit, 1.33 MSPS PulSAR ADC in MSOP/LFCSP

Analog Devices 

Data Sheet

16-Bit, 1.33 MSPS PulSAR ADC in

MSOP/LFCSP

AD7983

FEATURES

APPLICATION DIAGRAM

High performance

Pseudo differential analog input range

0 V to VREF with VREF between 2.9 V to 5 V

Throughput: 1.33 MSPS

Zero latency architecture

16-bit resolution with no missing codes

INL: ±0.6 LSB typical, ±1.0 LSB maximum

Dynamic range: 93 dB, VREF = 5 V

SNR: 92 dB at fIN = 1 kHz, VREF = 5 V

THD: −115 dB at fIN = 1 kHz, VREF = 5 V

SINAD: 92 dB at fIN = 1 kHz, VREF = 5 V

Low power dissipation

Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V

logic interface

5.25 mW at 1.33 MSPS (VDD only)

10.5 mW at 1.33 MSPS (total)

80 μW at 10 kSPS

Proprietary serial interface

SPI-/QSPI™-/MICROWIRE™-/DSP-compatible1

Daisy-chain multiple ADCs and busy indicator

10-lead MSOP and 10-lead, 3 mm × 3 mm LFCSP

Wide operating temperature range: −40°C to +85°C

APPLICATIONS

Automated test equipment

Data acquisition systems

Medical instruments

Machine automation

2.9V TO 5V 2.5V

0 TO VREF

REF VDD VIO

SDI

IN+

AD7983 SCK

IN–

SDO

GND

CNV

1.8V TO 5V

3- OR 4-WIRE INTERFACE

(SPI, DAISY CHAIN, CS)

Figure 1.

GENERAL DESCRIPTION

The AD7983 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 and a versatile serial interface port. On the CNV

rising edge, it samples an analog input IN+ between 0 V to REF

with respect to a ground sense IN−. The reference voltage, REF,

is applied externally and can be set independent of the supply

voltage, VDD. 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 supply VIO.

The AD7983 is housed in a 10-lead MSOP or a 10-lead LFCSP

with operation specified from −40°C to +85°

1 Protected by U.S. Patent 6,703,961.

Table 1. MSOP, LFCSP 16-/18-/20-Bit Precision SAR ADCs and SAR ADC-Based µModule Data Acquisition Solutions

Type

≤100 kSPS ≤250 kSPS ≤500 kSPS ≤1000 kSPS ≤2000 kSPS µModule Data Acquisition Solutions

Differential

20-Bit

AD40221

AD40211

AD40201

18-Bit

AD7989-11 AD76911

AD40111

AD40071

AD40031

AD76901

AD79821

AD7989-51 AD79841

16-Bit

AD7684

AD76871

AD76881

AD40051

AD40011

AD76931

AD79151

AD79161

Pseudo Differential

18-Bit

AD40101

AD40061

AD40021

16-Bit

AD7988-11 AD76851

AD40081

AD40041

AD40001

ADAQ7980

AD7680

AD7694

AD7988-51 AD79801

ADAQ7988

AD7683

AD76861

AD79831

1 Pin for pin compatible.

Rev. C

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