AD7866ARUZ Analog Devices Inc, AD7866ARUZ Datasheet

AD7866ARUZ

Manufacturer Part Number

AD7866ARUZ

Description

IC ADC 12BIT 2CH DUAL 20-TSSOP

Manufacturer

Analog Devices Inc

Datasheet

1.AD7866ARU-REEL.pdf (24 pages)

Specifications of AD7866ARUZ

Data Interface

DSP, MICROWIRE™, QSPI™, Serial, SPI™

Number Of Bits

Sampling Rate (per Second)

Number Of Converters

Power Dissipation (max)

24mW

Voltage Supply Source

Analog and Digital

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

20-TSSOP (0.173", 4.40mm Width)

Resolution (bits)

12bit

Input Channel Type

Single Ended

Supply Voltage Range - Analogue

2.7V To 5.25V

Supply Voltage Range - Digital

2.7V To 5.25V

Supply

RoHS Compliant

Sampling Rate

1MSPS

Rohs Compliant

Yes

Number Of Elements

Resolution

12Bit

Architecture

SAR

Sample Rate

1MSPS

Input Polarity

Unipolar

Input Type

Voltage

Rated Input Volt

2.5/5V

Differential Input

Power Supply Requirement

Analog and Digital

Single Supply Voltage (typ)

3/5V

Single Supply Voltage (min)

2.7V

Single Supply Voltage (max)

5.25V

Dual Supply Voltage (typ)

Not RequiredV

Dual Supply Voltage (min)

Not RequiredV

Dual Supply Voltage (max)

Not RequiredV

Power Dissipation

24mW

Differential Linearity Error

-0.95LSB/1.25LSB

Integral Nonlinearity Error

±1.5LSB

Operating Temp Range

-40C to 125C

Operating Temperature Classification

Automotive

Mounting

Surface Mount

Pin Count

Package Type

TSSOP

Input Signal Type

Single-Ended

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

For Use With

EVAL-AD7866CBZ - BOARD EVALUATION AD7866

Lead Free Status / Rohs Status

Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

AD7866ARUZ

Manufacturer:

ADI/亚德诺

Quantity:

20 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

AD7866ARUZ-REEL7

Manufacturer:

ADI/亚德诺

Quantity:

20 000

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GENERAL DESCRIPTION

The AD7866 is a dual 12-bit high speed, low power, successive

approximation ADC. The part operates from a single 2.7 V to

5.25 V power supply and features throughput rates up to 1 MSPS.

The device contains two ADCs, each preceded by a low noise,

wide bandwidth track-and-hold amplifier that can handle

input frequencies in excess of 10 MHz.

The conversion process and data acquisition are controlled

using standard control inputs, allowing easy interfacing to

microprocessors or DSPs. The input signal is sampled on the

falling edge of CS; conversion is also initiated at this point.

The conversion time is determined by the SCLK frequency.

There are no pipelined delays associated with the part.

The AD7866 uses advanced design techniques to achieve

very low power dissipation at high throughput rates. With 3 V

supplies and 1 MSPS throughput rate, the part consumes a

maximum of 3.8 mA. With 5 V supplies and 1 MSPS, the

current consumption is a maximum of 4.8 mA. The part also

offers flexible power/throughput rate management when

operating in sleep mode.

The analog input range for the part can be selected to be a 0 V

to V

twos complement output coding. The AD7866 has an on-chip

2.5 V reference that can be overdriven if an external reference

is preferred. Each on-board ADC can also be supplied with a

separate individual external reference.

The AD7866 is available in a 20-lead thin shrink small outline

(TSSOP) package.

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. 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 companies.

FEATURES

Dual 12-Bit, 2-Channel ADC

Fast Throughput Rate: 1 MSPS

Specified for V

Low Power

Wide Input Bandwidth

On-Board Reference 2.5 V

–40 C to +125 C Operation

Flexible Power/Throughput Rate Management

Simultaneous Conversion/Read

No Pipeline Delays

High Speed Serial Interface SPI

Shutdown Mode: 1 A Max

20-Lead TSSOP Package

REF

11.4 mW Max at 1 MSPS with 3 V Supplies

24 mW Max at 1 MSPS with 5 V Supplies

70 dB SNR at 300 kHz Input Frequency

MICROWIRE

range or a 2

/DSP Compatible

of 2.7 V to 5.25 V

REF

range with either straight binary or

/QSPI

PRODUCT HIGHLIGHTS

1. The AD7866 features two complete ADC functions, allowing

2. High Throughput with Low Power Consumption—The

3. Flexible Power/Throughput Rate Management—The conver-

4. No Pipeline Delay—The part features two standard successive

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

Tel: 781/329-4700

Fax: 781/326-8703

Dual 1 MSPS, 12-Bit, 2-Channel

simultaneous sampling and conversion of two channels. Each

ADC has a 2-channel input multiplexer. The conversion result

of both channels is available simultaneously on separate data

lines, or may be taken on one data line if only one serial port

is available.

AD7866 offers a 1 MSPS throughput rate with 11.4 mW

maximum power consumption when operating at 3 V.

sion rate is determined by the serial clock, allowing the power

consumption to be reduced as the conversion time is reduced

through a SCLK frequency increase. Power efficiency can be

maximized at lower throughput rates if the part enters sleep

during conversions.

approximation ADCs with accurate control of the sampling

instant via a CS input and once off conversion control.

SAR ADC with Serial Interface

AGND

MUX

2.5V

REF

AGND

REF

FUNCTIONAL BLOCK DIAGRAM

T/H

BUF

APPROXIMATION

CAP

SUCCESSIVE

CONTROL

LOGIC

12-BIT

ADC

REF SELECT

DGND

AD7866

DRIVERS

OUTPUT

AD7866

www.analog.com

RANGE

SCLK

DRIVE

OUT

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