EVAL-AD7674EDZ Analog Devices, EVAL-AD7674EDZ Datasheet

EVAL-AD7674EDZ

Manufacturer Part Number

EVAL-AD7674EDZ

Description

Data Conversion IC Development Tools EVALUATION BOARD

Manufacturer

Analog Devices

Type

ADCr

Series

AD7674r

Datasheet

1.EVAL-AD7674EDZ.pdf (28 pages)

Specifications of EVAL-AD7674EDZ

Rohs

yes

Product

Evaluation Boards

Tool Is For Evaluation Of

AD7674

Interface Type

SPI

Operating Supply Voltage

4.75 V to 5.25 V

Maximum Operating Temperature

+ 85 C

Minimum Operating Temperature

- 40 C

Factory Pack Quantity

Current page: 1 of 28
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FEATURES

18-bit resolution with no missing codes

No pipeline delay (SAR architecture)

Differential input range: ±V

Throughput:

INL: ±2.5 LSB max (±9.5 ppm of full scale)

Dynamic range : 103 dB typ (V

S/(N+D): 100 dB typ @ 2 kHz (V

Parallel (18-,16-, or 8-bit bus) and serial 5 V/3 V interface

SPI®/QSPI™/MICROWIRE™/DSP compatible

On-board reference buffer

Single 5 V supply operation

Power dissipation:

48-lead LQFP or 48-lead LFCSP package

Pin-to-pin compatible upgrade of AD7676/AD7678/AD7679

APPLICATIONS

CT scanners

High dynamic data acquisition

Geophone and hydrophone sensors

Instrumentation

Spectrum analysis

Medical instruments

GENERAL DESCRIPTION

The AD7674 is an 18-bit, 800 kSPS, charge redistribution SAR,

fully differential analog-to-digital converter that operates on a

single 5 V power supply. The part contains a high speed 18-bit

sampling ADC, an internal conversion clock, an internal

reference buffer, error correction circuits, and both serial and

parallel system interface ports.

The part is available in 48-lead LQFP or 48-lead LFCSP

packages with operation 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.

Δ replacement (low power, multichannel)

666 kSPS (Normal mode)

570 kSPS (Impulse mode)

78 mW typ@ 500 kSPS (Impulse mode)

160 μW @ 1 kSPS (Impulse mode)

800 kSPS (Warp mode)

98 mW typ @ 800 kSPS

REF

= 5 V)

up to 5 V)

18-Bit, 2.5 LSB INL, 800 kSPS SAR ADC

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

Tel: 781.329.4700

Fax: 781.461.3113

FUNCTIONAL BLOCK DIAGRAM

Table 1. PulSAR

Type/kSPS

Pseudo-

Differential

True Bipolar

True

Differential

18-Bit

Multichannel/

Simultaneous

PRODUCT HIGHLIGHTS

REFBUFIN

RESET

AGND

AVDD

High Resolution, Fast Throughput.

The AD7674 is an 800 kSPS, charge redistribution, 18-bit

SAR ADC (no latency).

Excellent Accuracy.

The AD7674 has a maximum integral nonlinearity of

2.5 LSB with no missing 18-bit codes.

Serial or Parallel Interface.

Versatile parallel (18-, 16- or 8-bit bus) or 3-wire serial

interface arrangement compatible with both 3 V and

5 V logic.

IN+

IN–

WARP IMPULSE

PDBUF

CALIBRATION CIRCUITRY

CONTROL LOGIC AND

100–250

AD7651

AD7660/AD7661

AD7675

AD7663

AD7678

Figure 1. Functional Block Diagram

Selection

SWITCHED

CAP DAC

REF REFGND

CNVST

CLOCK

AD7674

500–570

AD7650/AD7652

AD7664/AD7666

AD7665

AD7676

AD7679

AD7654

AD7655

INTERFACE

PARALLEL

SERIAL

PORT

DVDD

AD7674

www.analog.com

DGND

03083–0–001

800–

1000

AD7653

AD7667

AD7671

AD7677

AD7674

OVDD

OGND

D[17:0]

BUSY

MODE0

MODE1

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