AD9742ARUZ

更新时间： 2024-09-26 12:33:51

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
32页	1071K
描述
12-Bit, 210 MSPS TxDAC Digital-to-Analog Converter

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AD9742ARUZ 数据手册

12-Bit, 210 MSPS

TxDAC Digital-to-Analog Converter

AD9742

Data Sheet

FEATURES

FUNCTIONAL BLOCK DIAGRAM

3.3V

High performance member of pin-compatible TxDAC

product family

REFLO

1.2V REF

REFIO

AVDD ACOM

150pF

Excellent spurious-free dynamic range performance

SNR at 5 MHz output, 125 MSPS: 70 dB

Twos complement or straight binary data format

Differential current outputs: 2 mA to 20 mA

Power dissipation: 135 mW at 3.3 V

Power-down mode: 15 mW at 3.3 V

On-chip 1.2 V Reference

0.1µF

AD9742

CURRENT

SOURCE

ARRAY

FS ADJ

SET

3.3V

DVDD

DCOM

IOUTA

IOUTB

SEGMENTED

SWITCHES

LSB

SWITCHES

CLOCK

MODE

CLOCK

LATCHES

CMOS compatible digital interface

28-lead SOIC, 28-lead TSSOP, and 32-lead LFCSP

Edge-triggered latches

DIGITAL DATA INPUTS (DB11–DB0)

SLEEP

Figure 1.

APPLICATIONS

Wideband communication transmit channel:

Direct IF

Base stations

Wireless local loops

Digital radio links

Direct digital synthesis (DDS)

Instrumentation

GENERAL DESCRIPTION

The AD9742¹is a 12-bit resolution, wideband, third generation

member of the TxDAC series of high performance, low power

CMOS digital-to-analog converters (DACs). The TxDAC family,

consisting of pin-compatible 8-, 10-, 12-, and 14-bit DACs,

is specifically optimized for the transmit signal path of

communication systems. All of the devices share the same interface

options, small outline package, and pinout, providing an upward

or downward component selection path based on performance,

resolution, and cost. The AD9742 offers exceptional ac and dc

performance while supporting update rates up to 210 MSPS.

Edge-triggered input latches and a 1.2 V temperature compensated

band gap reference have been integrated to provide a complete

monolithic DAC solution. The digital inputs support 3 V CMOS

logic families.

PRODUCT HIGHLIGHTS

1. The AD9742 is the 12-bit member of the pin-compatible

TxDAC family, which offers excellent INL and DNL

performance.

2. Data input supports twos complement or straight binary

data coding.

The AD9742’s low power dissipation makes it well suited for

portable and low power applications. Its power dissipation can

be further reduced to a mere 60 mW with a slight degradation

in performance by lowering the full-scale current output. Also,

a power-down mode reduces the standby power dissipation to

approximately 15 mW. A segmented current source architecture

is combined with a proprietary switching technique to reduce

spurious components and enhance dynamic performance.

3. High speed, single-ended CMOS clock input supports

210 MSPS conversion rate.

4. Low power: Complete CMOS DAC function operates on

135 mW from a 2.7 V to 3.6 V single supply. The DAC full-

scale current can be reduced for lower power operation,

and a sleep mode is provided for low power idle periods.

5. On-chip voltage reference: The AD9742 includes a 1.2 V

temperature compensated band gap voltage reference.

6. Industry-standard 28-lead SOIC, 28-lead TSSOP, and

32-lead LFCSP packages.

¹Protected by U.S. Patent Numbers: 5,568,145; 5,689,257; and 5,703,519.

Rev. C

Document Feedback

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

rightsof third parties that may result fromits use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks andregisteredtrademarks are the property of their respective owners.

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

Technical Support

www.analog.com

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AD9742ARUZ 替代型号

型号	品牌	替代类型	描述	数据表
AD9742ARUZRL7	ADI	完全替代	12-Bit, 210 MSPS TxDAC Digital-to-Analog Converter
AD9742ARU	ADI	完全替代	12-Bit, 165 MSPS TxDAC D/A Converter

与AD9742ARUZ相关器件

型号	品牌	获取价格	描述	数据表
AD9742ARUZRL7	ADI	获取价格	12-Bit, 210 MSPS TxDAC Digital-to-Analog Converter
AD9742ARZ	ADI	获取价格	12-Bit, 210 MSPS TxDAC Digital-to-Analog Converter
AD9742ARZRL	ADI	获取价格	12-Bit, 210 MSPS TxDAC Digital-to-Analog Converter
AD9742-EB	ADI	获取价格	12-Bit, 165 MSPS TxDAC D/A Converter
AD9742-EBZ	ADI	获取价格	12-Bit, 210 MSPS TxDAC Digital-to-Analog Converter
AD9743	ADI	获取价格	Dual 8-/10-/12-/14-/16-Bit 250 MSPS Digital-to-Analog Converters
AD9743_15	ADI	获取价格	Dual 8-/10-/12-/14-/16-Bit 250 MSPS Digital-to-Analog Converters
AD9743BCPZ	ADI	获取价格	Dual 8-/10-/12-/14-/16-Bit 250 MSPS Digital-to-Analog Converters
AD9743BCPZRL	ADI	获取价格	Dual 8-/10-/12-/14-/16-Bit 250 MSPS Digital-to-Analog Converters
AD9743-EBZ	ADI	获取价格	Dual 8-/10-/12-/14-/16-Bit 250 MSPS Digital-to-Analog Converters

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