Datasheet > AD7694_17

AD7694_17

更新时间： 2024-11-06 01:17:19

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
17页	360K
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16-Bit, 250 kSPS PulSAR ADC in MSOP

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AD7694_17 数据手册

16-Bit, 250 kSPS PulSAR^®ADC in MSOP

Data Sheet

AD7694

APPLICATION DIAGRAM

FEATURES

1V TO VDD

2.5V TO 5V

16-bit resolution with no missing codes

Throughput: 250 kSPS at 5 V

INL: 4 LSB max

REF

VDD

S/(N + D): 92 dB at 20 kHz

0 TO V

REF

IN+

SCK

SDO

CNV

THD: –106 dB at 20 kHz

AD7694

3-WIRE SPI

INTERFACE

IN–

Pseudo-differential analog input range:

0 V to V_REFwith V_REFup to VDD

No pipeline delay

GND

Single-supply operation: 2.7 V or 5 V

Proprietary serial interface

Figure 1.

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

Supply Current: 540 μA at 2.7 V/100 kSPS,

800 μA at 5 V/100 kSPS

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

Type

100 kSPS

AD7684

AD7683

250 kSPS

AD7687

AD7685

AD7694

500 kSPS

AD7688

AD7686

Standby current: 1 nA

8-lead MSOP package

Improved second source to LTC1864 and LTC1864L

True Differential

Pseudo

Differential/Unipolar

Unipolar

AD7680

APPLICATIONS

Battery-powered equipment

Data acquisition

Instrumentation

Medical instruments

Process control

GENERAL DESCRIPTION

The AD7694 is a 16-bit, charge redistribution, successive

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

operates from a single power supply, VDD, between 2.7 V to

5.25 V. It contains a low power, high speed, 16-bit sampling

ADC with no missing codes (B grade), an internal conversion

clock, and a serial, SPI-compatible 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 an

analog input, IN+, between 0 V to REF with respect to a ground

sense, IN−. e reference voltage, REF, is applied externally and

can be set up to the supply voltage.

Its power scales linearly with throughput.

The AD7694 is housed in an 8-lead MSOP package with an

operating temperature specified from −40°C to +85°C.

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 ofthird parties that may result fromits use. Specifications subject to change without notice. No

licenseis granted byimplication 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

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