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AD7980ARMZRL7

16-Bit, 1 MSPS, PulSAR ADC in MSOP/LFCSP

Analog Devices 

Data Sheet

16-Bit, 1 MSPS, PulSAR ADC in MSOP/LFCSP

AD7980

FEATURES

16-bit resolution with no missing codes

Throughput: 1 MSPS

Low power dissipation

4 mW at 1 MSPS (VDD only)

7 mW at 1 MSPS (total)

70 µW at 10 kSPS

INL: ±0.6 LSB typical, ±1.25 LSB maximum

SINAD: 91.25 dB at 10 kHz

THD: −110 dB at 10 kHz

Pseudo differential analog input range

0 V to VREF with VREF between 2.5 V to 5 V

No pipeline delay

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

logic interface

Proprietary serial interface

SPI/QSPI/MICROWIRE™/DSP compatible

Daisy-chain multiple ADCs and busy indicator

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

same space as SOT-23

Wide operating temperature range: −40°C to +125°C

APPLICATIONS

Battery-powered equipment

Communications

Automatic test equipment (ATE)

Data acquisitions

Medical instruments

TYPICAL APPLICATION CIRCUIT

2.5V TO 5V 2.5V

0 TO VREF

REF VDD VIO

IN+

SDI

AD7980 SCK

IN–

SDO

GND

CNV

1.8V TO 5.0V

3- OR 4-WIRE INTERFACE

(SPI, DAISY CHAIN, CS)

Figure 1.

GENERAL DESCRIPTION

The AD79801 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 AD7980 is housed in a 10-lead MSOP or a 10-lead LFCSP

with operation specified from −40°C to +125°C.

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

Table 1. MSOP, LFCSP 14-/16-/18-/20-Bit Precision SAR ADCs and Integrated SAR ADC µModules

Type

20-Bit

18-Bit

100 kSPS

AD7989-11

16-Bit

AD7680

AD7683

AD7684

AD7988-11

14-Bit

AD7940

250 kSPS

AD76911

AD76851

AD76871

AD7694

AD79421

400 kSPS to 500 kSPS

AD40111

AD76901

AD7989-51

AD76861

AD76881

AD76931

AD7988-51

AD79161

AD40081

AD79461

≥1000 kSPS

AD40201

AD40031

AD40071

AD79821

AD79841

AD40011

AD40051

AD40001

AD40041

AD79801

AD79831

µModule Data

Acquisition System

ADAQ7980

ADAQ7988

1 Pin for pin compatible.

Rev. F

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