DAC7821

更新时间： 2024-09-13 09:59:39

品牌	Logo	应用领域
德州仪器 - TI		转换器
页数	文件大小	规格书
18页	1611K
描述
12-Bit, Parallel Input, Multiplying Digital-to-Analog Converter

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DAC7821 数据手册

DAC7821

www.ti.com

SBAS365A–OCTOBER 2005–REVISED FEBRUARY 2006

12-Bit, Parallel Input, Multiplying

Digital-to-Analog Converter

FEATURES

DESCRIPTION

•

2.5 V to 5.5 V Supply Operation

The DAC7821 is a CMOS 12-bit current output

digital-to-analog converter (DAC). This device

operates from a single 2.5 V to 5.5 V power supply,

making it suitable to battery-powered and many other

applications.

•

Fast Parallel Interface:

17ns Write Cycle

•

Update Rate of 20.4 MSPS

10 MHz Multiplying Bandwidth

±10 V Reference Input

This DAC operates with a fast parallel interface. Data

readback allows the user to read the contents of the

DAC register via the DB pins. On power-up, the

internal register and latches are filled with zeroes and

the DAC outputs are at zero scale.

Low Glitch Energy: 5 nV-s

Extended Temperature Range:

–40°C to +125°C

The

DAC7821

offers

excellent

4-quadrant

•

20-Lead QFN and 20-Lead TSSOP Packages

12-Bit Monotonic

multiplication characteristics, with large signal

multiplying bandwidth of 10 MHz. The applied

external reference input voltage (V_REF) determines

the full-scale output current. An integrated feedback

resistor (R_FB) provides temperature tracking and

full-scale voltage output when combined with an

external current-to-voltage precision amplifier.

±1 LSB INL

4-Quadrant Multiplication

Power-On Reset with Brownout Detection

Readback Function

Industry-Standard Pin Configuration

The DAC7821 is available in a 20-lead TSSOP

package as well as a small 20-lead QFN package

(available Q2 2006).

APPLICATIONS

•

Portable Battery-Powered Instruments

Waveform Generators

Analog Processing

Programmable Amplifiers and Attenuators

Digitally-Controlled Calibration

Programmable Filters and Oscillators

Composite Video

REF

DAC7821

I 1

OUT

12-Bit

Power-On

Reset

R-2R DAC

I 2

OUT

Ultrasound

DAC Register

Input Latch

Control

Logic

R/W

Parallel Bus

DB0

DB11

GND

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...18

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与DAC7821相关器件

型号	品牌	获取价格	描述	数据表
DAC7821IPW	TI	获取价格	12-Bit, Parallel Input, Multiplying Digital-to-Analog Converter
DAC7821IPWG4	TI	获取价格	12-Bit, Parallel Input, Multiplying Digital-to-Analog Converter
DAC7821IPWR	TI	获取价格	12-Bit, Parallel Input, Multiplying Digital-to-Analog Converter
DAC7821IPWRG4	TI	获取价格	12-Bit, Parallel Input, Multiplying Digital-to-Analog Converter
DAC7821IRGPR	TI	获取价格	12-Bit, Parallel Input, Multiplying Digital-to-Analog Converter
DAC7821IRGPT	TI	获取价格	12-Bit, Parallel Input, Multiplying Digital-to-Analog Converter
DAC7822	BB	获取价格	Dual, 12-Bit, Parallel Input, Multiplying Digital-to-Analog Converter
DAC7822	TI	获取价格	12 位双通道并行输入乘法数模转换器
DAC7822IRTAR	BB	获取价格	Dual, 12-Bit, Parallel Input, Multiplying Digital-to-Analog Converter
DAC7822IRTAR	TI	获取价格	Dual, 12-Bit, Parallel Input, Multiplying Digital-to-Analog Converter

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