AD7813YRUZ Analog Devices Inc, AD7813YRUZ Datasheet

AD7813YRUZ

Manufacturer Part Number

AD7813YRUZ

Description

10 BIT, SINGLE, PARALLEL,ADC I.C.

Manufacturer

Analog Devices Inc

Datasheet

1.AD7813YRZ-REEL.pdf (11 pages)

Specifications of AD7813YRUZ

Number Of Bits

Sampling Rate (per Second)

400k

Data Interface

Parallel

Number Of Converters

Power Dissipation (max)

17.5mW

Voltage Supply Source

Single Supply

Operating Temperature

-40°C ~ 105°C

Mounting Type

Surface Mount

Package / Case

16-TSSOP (0.173", 4.40mm Width)

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

AD7813YRUZ

Manufacturer:

ADI/亚德诺

Quantity:

20 000

Company:

H&T Electronics

Part Number:

AD7813YRUZ

Quantity:

160

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GENERAL DESCRIPTION

The AD7813 is a high-speed, microprocessor-compatible,

8-/10-bit analog-to-digital converter with a maximum through-

put of 400 kSPS. The converter operates off a single 2.7 V to

5.5 V supply and contains a 2.3 µs successive approximation

A/D converter, track/hold circuitry, on-chip clock oscillator and

8-bit wide parallel interface. The parallel interface is designed to

allow easy interfacing to microprocessors and DSPs. The 10-bit

conversion result is read by carrying out two 8-bit read opera-

tions. The first read operation accesses the 8 MSBs of the ADC

conversion result and the second read accesses the 2 LSBs.

Using only address decoding logic the AD7813 is easily mapped

into the microprocessor address space.

When used in its power-down mode, the AD7813 automatically

powers down at the end of a conversion and powers up at the

start of a new conversion. This feature significantly reduces the

power consumption of the part at lower throughput rates. The

AD7813 can also operate in a high speed mode where the part is

not powered down between conversions. In this mode of opera-

tion the part is capable of providing 400 kSPS throughput.

The part is available in a small, 16-lead, 0.3" wide, plastic dual-

in-line package (DIP), in a 16-lead, 0.15" wide, narrow body

small outline IC (SOIC) and in a 16-lead thin shrink small

outline package (TSSOP).

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

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

otherwise under any patent or patent rights of Analog Devices.

FEATURES

8-/10-Bit ADC with 2.3 s Conversion Time

On-Chip Track and Hold

Operating Supply Range: 2.7 V to 5.5 V

Specifications at 2.7 V – 3.6 V and 5 V

8-Bit Parallel Interface

Power Performance

Analog Input Range: 0 V to V

Reference Input Range: 1.2 V to V

8-Bit + 2-Bit Read

Normal Operation

Automatic Power-Down

10.5 mW, V

34.6 W @ 1 kSPS, V

= 3 V

REF

10%

PRODUCT HIGHLIGHTS

1. Low Power, Single Supply Operation

2. Automatic Power-Down

3. Parallel Interface

4. Dynamic Specifications for DSP Users

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

Tel: 781/329-4700

Fax: 781/326-8703

The AD7813 operates from a single 2.7 V to 5.5 V supply

and typically consumes only 10.5 mW of power. The power

dissipation can be significantly reduced at lower through-

put rates by using the automatic power-down mode.

The automatic power-down mode, whereby the AD7813

goes into power-down mode at the end of a conversion and

powers up before the next conversion, means the AD7813

is ideal for battery powered applications; e.g., 34.6 µW

@ 1 kSPS. (See Power vs. Throughput Rate section.)

An easy to use 8-bit-wide parallel interface allows interfacing

to most popular microprocessors and DSPs with minimal

external circuitry.

In addition to the traditional ADC specifications, the AD7813

is specified for ac parameters, including signal-to-noise ratio

and distortion.

AD7813

T/H

FUNCTIONAL BLOCK DIAGRAM

2.7 V to 5.5 V, 400 kSPS

8-/10-Bit Sampling ADC

AGND

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

REDISTRIBUTION

CHARGE

COMP

DAC

REF

CLOCK

OSC

BUSY CS RD

CONTROL

LOGIC

DRIVERS

THREE-

AD7813

STATE

CONVST

DB7

DB0

Related parts for AD7813YRUZ

AD7813YRUZ Summary of contents

Page 1

FEATURES 8-/10-Bit ADC with 2.3 s Conversion Time On-Chip Track and Hold Operating Supply Range: 2 5.5 V Specifications at 2.7 V – 3.6 V and 5 V 8-Bit Parallel Interface 8-Bit + 2-Bit Read Power Performance ...

Page 2

AD7813–SPECIFICATIONS Parameter DYNAMIC PERFORMANCE 1 Signal to (Noise + Distortion) Ratio 1 Total Harmonic Distortion (THD) 1 Peak Harmonic or Spurious Noise 2 Intermodulation Distortion 2nd Order Terms 3rd Order Terms DC ACCURACY Resolution Minimum Resolution for Which No Missing ...

Page 3

TIMING CHARACTERISTICS Parameter 10 1.5 1.5 POWER-UP t 2.3 2 ...

Page 4

AD7813 Pin No. Mnemonic Description 1 V Reference Input, 1 REF 2 V Analog Input GND Analog and Digital Ground. Convert Start. A low-to-high transition on this pin initiates a 1.5 ...

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

AD7813 CIRCUIT DESCRIPTION Converter Operation The AD7813 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 2 and 3 below show simplified ...

Page 7

During the acquisition phase the sampling capacitor must be charged to within a 1/2 LSB of its final value. The time it takes to charge the sampling capacitor (T CHARGE following formula: = 7.6 × (R2 + 125 Ω) × ...

Page 8

AD7813 Typical Performance Characteristics 10 1 0.1 0. THROUGHPUT – kSPS Figure 10. Power vs. Throughput 0 AD7813 –10 2048 POINT FFT SAMPLING 357.142kHz –20 f 30.168kHz IN –30 –40 –50 –60 –70 ...

Page 9

EXT CONVST t POWER-UP INT CONVST BUSY CS/RD DB7–DB0 EXT CONVST t POWER-UP INT CONVST BUSY CS/RD DB7–DB0 PARALLEL INTERFACE The parallel interface of the AD7813 is eight bits wide. The output data buffers are activated when both CS and ...

Page 10

AD7813 MICROPROCESSOR INTERFACING The parallel port on the AD7813 allows the device to be inter- faced to a range of many different microcontrollers. This section explains how to interface the AD7813 with some of the more common microcontroller parallel interface ...

Page 11

REV. C OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 16-Lead Plastic DIP (N-16) 0.840 (21.33) 0.745 (18.93 0.280 (7.11) 0.240 (6.10 PIN 1 0.060 (1.52) 0.015 (0.38) MAX 0.130 ...

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