EVAL-AD7694SDZ Analog Devices, EVAL-AD7694SDZ Datasheet

EVAL-AD7694SDZ

Manufacturer Part Number

EVAL-AD7694SDZ

Description

Data Conversion IC Development Tools EVALUATION BOARD

Manufacturer

Analog Devices

Type

ADCr

Series

AD7694r

Datasheet

1.EVAL-AD7694SDZ.pdf (16 pages)

Specifications of EVAL-AD7694SDZ

Rohs

yes

Product

Evaluation Boards

Tool Is For Evaluation Of

AD7694

Interface Type

SPI

Operating Supply Voltage

2.7 V to 5.25 V

Maximum Operating Temperature

+ 85 C

Minimum Operating Temperature

- 40 C

Factory Pack Quantity

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FEATURES

16-bit resolution with no missing codes

Throughput: 250 kSPS @ 5 V

INL: ±4 LSB max

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

THD: –106 dB @ 20 kHz

Pseudo-differential analog input range:

No pipeline delay

Single-supply operation: 2.7 V or 5 V

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

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

Standby current: 1 nA

8-lead MSOP package

Improved second source to LTC1864 and LTC1864L

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−. The 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.

Rev. A

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 registered trademarks are the property of their respective owners.

0 V to V

800 μA @ 5 V/100 kSPS

REF

with V

REF

up to VDD

16-Bit, 250 kSPS PulSAR

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

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

Type

True Differential

Pseudo

Differential/Unipolar

Unipolar

0 TO V

REF

APPLICATION DIAGRAM

IN+

IN–

1V TO VDD

100 kSPS

AD7684

AD7683

AD7680

AD7694

GND

REF

Figure 1.

2.5V TO 5V

SDO

VDD

SCK

CNV

ADC in MSOP

250 kSPS

AD7687

AD7685

AD7694

3-WIRE SPI

INTERFACE

www.analog.com

500 kSPS

AD7688

AD7686

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