EVAL-AD7466CB datasheet, PDF - EEWORLD Datasheet

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EVAL-AD7466CB: Description1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO6; Categorysemiconductor logic; File Size442KB，28 Pages; ManufacturerADI; Websitehttps://www.analog.com

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EVAL-AD7466CB Overview

1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO6

EVAL-AD7466CB Parametric

Parameter Name	Attribute value
Number of functions	1
Number of terminals	6
Maximum operating temperature	85 Cel
Minimum operating temperature	-40 Cel
Rated supply voltage	1.8 V
Maximum conversion time	4.7 uS
Maximum linear error	0.0366 %
Maximum limit analog input voltage	3.6 V
Minimum limit analog input voltage	0.0 V
Processing package description	LEAD FREE, MO-178-AB, SOT-23, 6 PIN
Lead-free	Yes
EU RoHS regulations	Yes
China RoHS regulations	Yes
state	EOL/LIFEBUY
packaging shape	RECTANGULAR
Package Size	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
surface mount	Yes
Terminal form	GULL WING
Terminal spacing	0.9500 mm
terminal coating	NICKEL PALLADIUM GOLD
Terminal location	DUAL
Packaging Materials	PLASTIC/EPOXY
Temperature level	INDUSTRIAL
Sampling Rate	0.2000 MHz
Output format	SERIAL
Type of converter	SUCCESSIVE APPROXIMATION
Number of digits	12
Output bit encoding	BINARY
Number of analog channels	1
Sample and hold and track and hold	TRACK

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1.6 V, Micropower 12-/10-/8-Bit ADCs

AD7466/AD7467/AD7468

FEATURES

Specified for V

of 1.6 V to 3.6 V

Low power:

0.62 mW typical at 100 kSPS with 3 V supplies

0.48 mW typical at 50 kSPS with 3.6 V supplies

0.12 mW typical at 100 kSPS with 1.6 V supplies

Fast throughput rate: 200 kSPS

Wide input bandwidth:

71 dB SNR at 30 kHz input frequency

Flexible power/serial clock speed management

No pipeline delays

High speed serial interface:

SPI/QSPI™/MICROWIRE™/DSP compatible

Automatic power-down

Power-down mode: 8 nA typical

6-lead SOT-23 package

8-lead MSOP package

FUNCTIONAL BLOCK DIAGRAM

T/H

12-/10-/8-BIT

SUCCESSIVE

APPROXIMATION

ADC

SCLK

CONTROL

LOGIC

SDATA

GND

Figure 1.

APPLICATIONS

Battery-powered systems

Medical instruments

Remote data acquisition

Isolated data acquisition

GENERAL DESCRIPTION

The AD7466/AD7467/AD7468

are 12-/10-/8-bit, high speed,

low power, successive approximation analog-to-digital

converters (ADCs), respectively. The parts operate from a single

1.6 V to 3.6 V power supply and feature throughput rates up to

200 kSPS with low power dissipation. The parts contain a low

noise, wide bandwidth track-and-hold amplifier, which can

handle input frequencies in excess of 3 MHz.

The conversion process and data acquisition are controlled

using CS and the serial clock, allowing the devices to interface

with microprocessors or DSPs. The input signal is sampled on

the falling edge of CS, and the conversion is also initiated at this

point. There are no pipeline delays associated with the part.

The reference for the part is taken internally from V

. This

allows the widest dynamic input range to the ADC. Thus, the

analog input range for the part is 0 V to V

. The conversion

rate is determined by the SCLK.

PRODUCT HIGHLIGHTS

Specified for supply voltages of 1.6 V to 3.6 V.

12-, 10-, and 8-bit ADCs in SOT-23 and MSOP packages.

High throughput rate with low power consumption.

Power consumption in normal mode of operation at

100 kSPS and 3 V is 0.9 mW maximum.

Flexible power/serial clock speed management.

The conversion rate is determined by the serial clock,

allowing the conversion time to be reduced through

increases in the serial clock speed. Automatic power-down

after conversion allows the average power consumption to

be reduced when in power-down. Current consumption is

0.1 μA maximum and 8 nA typically when in power-down.

Reference derived from the power supply.

No pipeline delay.

The part features a standard successive approximation

ADC with accurate control of conversions via a CS input.

Protected by U.S. Patent No. 6,681,332.

Rev. C

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.

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

Tel: 781.329.4700

www.analog.com

02643-001

AD7466/AD7467/AD7468

AD7466/AD7467/AD7468

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

Functional Block Diagram .............................................................. 1

General Description ......................................................................... 1

Product Highlights ........................................................................... 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

AD7466 .......................................................................................... 3

AD7467 .......................................................................................... 5

AD7468 .......................................................................................... 7

Timing Specifications .................................................................. 9

Timing Examples........................................................................ 10

Absolute Maximum Ratings.......................................................... 11

ESD Caution................................................................................ 11

Pin Configurations and Function Descriptions ......................... 12

Typical Performance Characteristics ........................................... 13

Dynamic Performance Curves ................................................. 13

DC Accuracy Curves ................................................................. 13

Power Requirement Curves ...................................................... 13

Terminology .................................................................................... 16

Theory of Operation ...................................................................... 17

Circuit Information.................................................................... 17

Converter Operation.................................................................. 17

ADC Transfer Function............................................................. 17

Typical Connection Diagram ................................................... 17

Analog Input ............................................................................... 18

Digital Inputs .............................................................................. 18

Normal Mode.............................................................................. 19

Power Consumption .................................................................. 20

Serial Interface ................................................................................ 22

Microprocessor Interfacing....................................................... 23

Application Hints ........................................................................... 25

Grounding and Layout .............................................................. 25

Evaluating the Performance of the AD7466 and AD7467.... 25

Outline Dimensions ....................................................................... 26

Ordering Guide .......................................................................... 27

REVISION HISTORY

5/07—Rev. B to Rev. C

Deleted Figure 3.............................................................................. 10

Updated Outline Dimensions ....................................................... 26

Changes to Ordering Guide .......................................................... 27

4/05—Rev. A to Rev. B

Moved Terminology Section......................................................... 16

Changes to Ordering Guide .......................................................... 27

11/04—Rev. 0 to Rev. A

Updated Format..................................................................Universal

Changes to General Description .................................................... 1

Added Patent Number ..................................................................... 1

Updated Outline Dimensions ....................................................... 26

Changes to Ordering Guide .......................................................... 27

5/03—Revision 0: Initial Version

Rev. C | Page 2 of 28

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