Datasheet > AD7989-1

AD7989-1

更新时间： 2024-09-16 01:05:27

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亚德诺 - ADI		/
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24页	595K
描述
PulSAR ADCs in MSOP/LFCSP

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数据手册

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AD7989-1 数据手册

18-Bit, 100 kSPS/500 kSPS

PulSAR ADCs in MSOP/LFCSP

Data Sheet

AD7989-1/AD7989-5

FEATURES

GENERAL DESCRIPTION

Low power dissipation

AD7989-1

The AD7989-1/AD7989-5 are 18-bit, successive approximation,

analog-to-digital converters (ADCs) that operate from a single

power supply, VDD. The AD7989-1/AD7989-5 contain a low

power, high speed, 18-bit sampling ADC and a versatile serial

interface port. On the CNV rising edge, the AD7989-1/AD7989-5

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

The voltages on these pins typically swing in opposite phases

between 0 V and V_REF. The reference voltage, V_REF, is applied

externally and can be set independent of the supply voltage,

VDD. Its power scales linearly with throughput.

400 μW at 100 kSPS typical (VDD only)

700 μW at 100 kSPS typical (total)

AD7989-5

2 mW at 500 kSPS typical (VDD only)

3.5 mW at 500 kSPS typical (total)

18-bit resolution with no missing codes

Throughput

AD7989-1

100 kSPS

AD7989-5

500 kSPS

INL: 1 LSB typical, 2 LSB maximum

SNR: 98 dB at 1 kHz, V_REF= 5 V typical

SINAD: 97 dB at 1 kHz typical

THD: −120 dB at 10 kHz typical

Dynamic range: 99 dB at V_REF= 5 V typical

True differential analog input voltage range: V_REF

0 V to V_REFwith V_REFbetween 2.4 V and 5.1 V

No pipeline delay

The AD7989-1/AD7989-5 are serial peripheral interface (SPI)-

compatible, which features the ability, using the SDI/ input,

to daisy-chain several ADCs on a single 3-wire bus. The

AD7989-1/AD7989-5 are compatible with 1.8 V, 2.5 V, 3 V, and

5 V logic, using the separate VIO supply.

The AD7989-1/AD7989-5 are available in a 10-lead MSOP or a

10-lead LFCSP with operation specified from −40°C to +85°C.

Table 1. MSOP and LFCSP 14-/16-/18-Bit PulSAR® ADCs

Bits 100 kSPS

250 kSPS

AD7691²

400 kSPS to 500 kSPS

AD7690²

≥1000 kSPS

AD7982²

18¹

AD7989-1²

AD7989-5²

AD7688²

AD7693²

AD7916²

AD7686²

AD7984²

AD7915²

Single-supply 2.5 V operation with 1.8 V, 2.5 V, 3 V, and 5 V

logic interface

Proprietary serial interface SPI-/QSPI™-/MICROWIRE™-/

DSP-compatible¹

Ability to daisy-chain multiple ADCs

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

16¹

AD7684

AD7687²

16³

14³

AD7680

AD7683

AD7988-1²

AD7940

AD7685²

AD7694

AD7980²

AD7983²

AD7988-5²

AD7942²

AD7946²

APPLICATIONS

Battery-powered equipment

Data acquisition systems

Medical instruments

¹True differential.

²Pin for pin compatible.

³Pseudo differential.

Seismic data acquisition systems

TYPICAL APPLICATIONS CIRCUIT

2.5V TO 5V 2.5V

VIO

1.8V TO 5.5V

REF VDD

SDI/CS

AD7989-1/

AD7989-5

IN+

3- OR 4-WIRE

INTERFACE

(SPI, CS,

SCK

SDO

CNV

±10V, ±5V, ..

IN–

DAISY CHAIN)

GND

ADA4941-1

Figure 1.

¹Protected by U.S. Patent 6,703,961.

Rev. B

Document Feedback

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.

Technical Support

www.analog.com

12 3 4 5 6 7...24

中文翻译

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与AD7989-1相关器件

型号	品牌	获取价格	描述	数据表
AD7989-1_17	ADI	获取价格	PulSAR ADCs in MSOP/LFCSP
AD7989-1BCPZ-R2	ADI	获取价格	IC ADC 18BIT 100KSPS SAR 10LFCSP
AD7989-1BCPZ-RL7	ADI	获取价格	IC ADC 18BIT 100KSPS SAR 10LFCSP
AD7989-1BRMZ	ADI	获取价格	IC ADC 18BIT 100KSPS SAR 10MSOP
AD7989-1BRMZ-RL7	ADI	获取价格	PulSAR ADCs in MSOP/LFCSP
AD7989-5	ADI	获取价格	PulSAR ADCs in MSOP/LFCSP
AD7989-5BCPZ-R2	ADI	获取价格	IC ADC 18BIT 500KSPS SAR 10LFCSP
AD7989-5BCPZ-RL7	ADI	获取价格	IC ADC 18BIT 500KSPS SAR 10LFCSP
AD7989-5BRMZ	ADI	获取价格	PulSAR ADCs in MSOP/LFCSP
AD7989-5BRMZ-RL7	ADI	获取价格	IC ADC 18BIT 500KSPS SAR 10MSOP

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