AD7819YRZ

更新时间： 2024-11-23 12:54:07

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
11页	146K
描述
2.7 V to 5.5 V, 200 kSPS 8-Bit Sampling ADC

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AD7819YRZ 数据手册

2.7 V to 5.5 V, 200 kSPS

8-Bit Sampling ADC

AD7819

FEATURES

FUNCTIONAL BLOCK DIAGRAM

8-Bit ADC with 4.5 ꢀs Conversion Time

On-Chip Track and Hold

REF

AGND

Operating Supply Range: 2.7 V to 5.5 V

Specifications at 2.7 V – 3.6 V and 5 V ꢁ 10%

8-Bit Parallel Interface

8-Bit Read

Power Performance

AD7819

DB7

DB0

CHARGE

REDISTRIBUTION

DAC

THREE-

STATE

DRIVERS

CLOCK

OSC

Normal Operation

10.5 mW, V_DD= 3 V

Automatic Power-Down

57.75 ꢀW @ 1 kSPS, V_DD= 3 V

Analog Input Range: 0 V to V_REF

Reference Input Range: 1.2 V to V_DD

CONTROL

LOGIC

COMP

T/H

BUSY

CS RD CONVST

PRODUCT HIGHLIGHTS

1. Low Power, Single Supply Operation

GENERAL DESCRIPTION

The AD7819 is a high speed, microprocessor-compatible, 8-bit

analog-to-digital converter with a maximum throughput of

200 kSPS. The converter operates off a single 2.7 V to 5.5 V

supply and contains a 4.5 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. Using only

address decoding logic the AD7819 is easily mapped into the

microprocessor address space.

The AD7819 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.

2. Automatic Power-Down

The automatic power-down mode, whereby the AD7819

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

powers up before the next conversion, means the AD7819

is ideal for battery powered applications; e.g., 57.75 µW

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

When used in its power-down mode, the AD7819 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

AD7819 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 200 kSPS throughput.

3. Parallel Interface

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

to most popular microprocessors and DSPs with minimal

external circuitry.

4. Dynamic Specifications for DSP Users

In addition to the traditional ADC specifications, the AD7819

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

and distortion.

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, narrow body, thin

shrink small outline package (TSSOP).

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.

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

Tel: 781/329-4700

Fax: 781/326-8703

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

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AD7819YRZ 替代型号

型号	品牌	替代类型	描述	数据表
AD7819YR	ADI	完全替代	+2.7 V to +5.5 V, 200 kSPS 8-Bit Sampling ADC

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AD7820	ADI	获取价格	LC2MOS HIGH-SPEED uP-COMPATIBLE 8-BIT ADC WITH TRACK/HOLD FUNCTION
AD7820BCHIPS	ETC	获取价格	Analog-to-Digital Converter， 8-Bit
AD7820BQ	ADI	获取价格	LC2MOS HIGH-SPEED uP-COMPATIBLE 8-BIT ADC WITH TRACK/HOLD FUNCTION
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