AD7810YNZ Analog Devices Inc, AD7810YNZ Datasheet

AD7810YNZ

Manufacturer Part Number

AD7810YNZ

Description

IC ADC 10BIT SRL HS LP 8DIP

Manufacturer

Analog Devices Inc

Datasheet

1.AD7810YRZ-REEL.pdf (11 pages)

Specifications of AD7810YNZ

Data Interface

Serial

Number Of Bits

Sampling Rate (per Second)

350k

Number Of Converters

Power Dissipation (max)

17.5mW

Voltage Supply Source

Single Supply

Operating Temperature

-40°C ~ 105°C

Mounting Type

Through Hole

Package / Case

8-DIP (0.300", 7.62mm)

Resolution (bits)

10bit

Sampling Rate

350kSPS

Input Channel Type

Single Ended

Supply Voltage Range - Analog

2.7V To 5.5V

Supply Current

3.5mA

Digital Ic Case Style

DIP

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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GENERAL DESCRIPTION

The AD7810 is a high speed, low power, 10-bit A/D con-

verter that operates from a single 2.7 V to 5.5 V supply. The

part contains a 2.3 µs successive approximation A/D converter,

with inherent track/hold functionality, a pseudo differential

input and a high speed serial interface that interfaces to most

microcontrollers. The AD7810 is fully specified over a tem-

perature range of –40°C to +105°C.

By using a technique that samples the state of the CONVST

(convert start) signal at the end of a conversion, the AD7810

may be used in an automatic power-down mode. When used in

this mode, the AD7810 automatically powers down at the end

of a conversion and “wakes up” at the start of a new conversion.

This feature significantly reduces the power consumption of the

part at lower throughput rates. The AD7810 can also operate in

a high speed mode where the part is not powered down between

conversions. In this high speed mode of operation, the conver-

sion time of the AD7810 is 2.3 µs. The maximum throughput

rate is dependent on the speed of the serial interface of the

microcontroller.

The part is available in a small 8-lead, 0.3" wide, plastic dual-

in-line package (mini-DIP); in an 8-lead, small outline IC

(SOIC); and in an 8-lead microSOIC package.

REV. B

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

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

FEATURES

10-Bit ADC with 2.3 s Conversion Time

Small Footprint 8-Lead microSOIC Package

Specified Over a –40 C to +105 C Temperature Range

Inherent Track-and-Hold Functionality

Operating Supply Range: 2.7 V to 5.5 V

Specifications at 2.7 V to 5.5 V

Microcontroller-Compatible Serial Interface

Optional Automatic Power-Down

Low Power Operation

Analog Input Range: 0 V to V

Reference Input Range: 0 V to V

APPLICATIONS

Low Power, Hand-Held Portable Applications that

270 W at 10 kSPS Throughput Rate

2.7 mW at 100 kSPS Throughput Rate

at End of Conversion

Require Analog-to-Digital Conversion with 10-Bit

Accuracy; e.g., Battery Powered Test Equipment,

Battery-Powered Communications Systems

REF

PRODUCT HIGHLIGHTS

1. Complete, 10-Bit ADC in 8-Lead Package

2. Low Power, Single Supply Operation

3. Automatic Power-Down

4. Serial Interface

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

Tel: 781/329-4700

Fax: 781/326-8703

The AD7810 is a 10-bit 2.3 µs ADC with inherent track/hold

functionality and a high speed serial interface—all in an

8-lead microSOIC package. V

to eliminate the need for an external reference. The result is

a high speed, low power, space saving ADC solution.

The AD7810 operates from a single 2.7 V to 5.5 V supply

and typically consumes only 9 mW of power while convert-

ing. The power dissipation can be significantly reduced at

lower throughput rates by using the automatic power-down

mode, e.g., at a throughput rate of 10 kSPS the power

consumption is only 270 µW.

The automatic power-down mode, whereby the AD7810

powers down at the end of a conversion and “wakes up”

before the next conversion, means the AD7810 is ideal for

battery powered applications. See Power vs. Throughput

Rate section.

An easy to use, fast serial interface allows connection to most

popular microprocessors with no external circuitry.

ADC in 8-Lead microSOIC/DIP

2.7 V to 5.5 V, 2.3 s, 10-Bit

–

AD7810

FUNCTIONAL BLOCK DIAGRAM

AGND

World Wide Web Site: http://www.analog.com

REDISTRIBUTION

CHARGE

DAC

COMP

REF

CLOCK

OSC

REF

may be connected to V

CONTROL

CONVST

SERIAL

LOGIC

PORT

AD7810

SCLK

OUT

Related parts for AD7810YNZ

AD7810YNZ Summary of contents

Page 1

FEATURES 10-Bit ADC with 2.3 s Conversion Time Small Footprint 8-Lead microSOIC Package Specified Over a – +105 C Temperature Range Inherent Track-and-Hold Functionality Operating Supply Range: 2 5.5 V Specifications at 2 ...

Page 2

AD7810–SPECIFICATIONS Parameter DYNAMIC PERFORMANCE 1 Signal to (Noise + Distortion) Ratio 1 Total Harmonic Distortion Peak Harmonic or Spurious Noise 2 Intermodulation Distortion 2nd Order Terms 3rd Order Terms DC ACCURACY Resolution 1 Relative Accuracy 1 Differential Nonlinearity (DNL) 1 ...

Page 3

Timing Characteristics Parameter 10 2.3 2 ...

Page 4

AD7810 Pin No. Mnemonic Description CONVST 1 Convert Start. Falling edge puts the track-and-hold into hold mode and initiates a conversion. A rising edge on the CONVST pin enables the serial port of the AD7810. This is useful in multi- ...

Page 5

TERMINOLOGY Signal to (Noise + Distortion) Ratio This is the measured ratio of signal to (noise + distortion) at the output of the A/D converter. The signal is the rms amplitude of the fundamental. Noise is the rms sum of ...

Page 6

AD7810 CIRCUIT DESCRIPTION Converter Operation The AD7810 is a successive approximation analog-to-digital converter based around a charge redistribution DAC. The ADC can convert analog input signals in the range ures 4 and 5 below show simplified ...

Page 7

When using the pseudo differential input scheme, the signal on V must not vary by more than a 1/2 LSB during the conver- IN– sion process. If the signal on V varies during conversion, the IN– conversion result will be ...

Page 8

AD7810 POWER-UP TIMES The AD7810 has a 1.5 µs power-up time. When V connected, the AD7810 low current mode of operation. In order to carry out a conversion, the AD7810 must first be powered up. The ADC ...

Page 9

Mode 2 Operation (Automatic Power-Down) When used in this mode of operation, the part automatically powers down at the end of a conversion. This is achieved by leaving the CONVST signal low until the end of the conversion. Because it ...

Page 10

AD7810 MICROPROCESSOR INTERFACING The serial interface on the AD7810 allows the parts to be directly connected to a range of many different microprocessors. This section explains how to interface the AD7810 with some of the more common microcontroller serial interface ...

Page 11

REV. B OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 8-Lead Plastic DIP (N-8) 0.430 (10.92) 0.348 (8.84 0.280 (7.11) 0.240 (6.10 0.325 (8.25) 0.300 (7.62) 0.060 (1.52) PIN 1 0.015 (0.38) 0.210 (5.33) MAX 0.130 ...

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