Datasheet > AD9709ASTRL

AD9709ASTRL

更新时间： 2024-09-28 20:46:39

品牌	Logo	应用领域
亚德诺 - ADI		输入元件转换器
页数	文件大小	规格书
27页	461K
描述
IC PARALLEL, 8 BITS INPUT LOADING, 0.035 us SETTLING TIME, 8-BIT DAC, PQFP48, PLASTIC, LQFP-48, Digital to Analog Converter

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AD9709ASTRL 数据手册

8-Bit, 125 MSPS

Dual TxDAC+ D/A Converter

AD9709*

FEATURES

8-Bit Dual Transmit DAC

FUNCTIONAL BLOCK DIAGRAM

125 MSPS Update Rate

DVDD DCOM AVDD ACOM

CLK1

Excellent SFDR to Nyquist @ 5 MHz Output = 66 dBc

Excellent Gain and Offset Matching: 0.1%

Fully Independent or Single Resistor Gain Control

Dual Port or Interleaved Data

On-Chip 1.2 V Reference

Single 5 V or 3 V Supply Operation

Power Dissipation: 380 mW @ 5 V

Power-Down Mode: 50 mW @ 5 V

48-Lead LQFP

OUTA1

“1”

PORT1

LATCH

DAC

OUTB1

REFIO

FSADJ1

FSADJ2

GAINCTRL

REFERENCE

WRT1

WRT2

DIGITAL

AD9709

INTERFACE

BIAS

GENERATOR

SLEEP

OUTA2

“2”

LATCH

“2”

DAC

PORT2

OUTB2

APPLICATIONS

Communications

Basestations

MODE

CLK2

Digital Synthesis

Quadrature Modulation

3D Ultrasound

PRODUCT DESCRIPTION

The DACs utilize a segmented current source architecture

combined with a proprietary switching technique to reduce

glitch energy and to maximize dynamic accuracy. Each DAC

provides differential current output thus supporting single-ended

or differential applications. Both DACs can be simultaneously

updated and provide a nominal full-scale current of 20 mA.

The full-scale currents between each DAC are matched to

within 0.1%.

The AD9709 is a dual-port, high-speed, two-channel, 8-bit

CMOS DAC. It integrates two high-quality 8-bit TxDAC+

cores, a voltage reference, and digital interface circuitry into a

small 48-lead LQFP package. The AD9709 offers exceptional

ac and dc performance while supporting update rates up to

125 MSPS.

The AD9709 has been optimized for processing I and Q data in

communications applications. The digital interface consists of

two double-buffered latches as well as control logic. Separate

write inputs allow data to be written to the two DAC ports

independent of one another. Separate clocks control the update

rate of the DACs.

The AD9709 is manufactured on an advanced low-cost CMOS

process. It operates from a single supply of 3.0 V to 5.0 V and

consumes 380 mW of power.

PRODUCT HIGHLIGHTS

1. The AD9709 is a member of a pin-compatible family of dual

TxDACs providing 8-, 10-, 12-, and 14-bit resolution.

A mode control pin allows the AD9709 to interface to two sep-

arate data ports, or to a single interleaved high-speed data port.

In interleaving mode, the input data stream is demuxed into

its original I and Q data and then latched. The I and Q data

is then converted by the two DACs and updated at half the

input data rate.

2. Dual 8-Bit, 125 MSPS DACs: A pair of high-performance

DACs optimized for low-distortion performance provide for

flexible transmission of I and Q information.

3. Matching: Gain matching is typically 0.1% of full-scale, and

offset error is better than 0.02%.

The GAINCTRL pin allows two modes for setting the full-scale

current (I_OUTFS) of the two DACs. I_OUTFSfor each DAC can be

set independently using two external resistors, or I_OUTFSfor

both DACs can be set using a single external resistor.

4. Low Power: Complete CMOS Dual DAC function operates

on 380 mW from a 3.0 V to 5.0 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 AD9709 includes a 1.20 V

temperature-compensated bandgap voltage reference.

6. Dual 8-Bit Inputs: The AD9709 features a flexible dual-port

interface allowing dual or interleaved input data.

TxDAC+ is a registered trademark of Analog Devices, Inc.

*Patent pending.

REV. 0

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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AD9709ASTRL 替代型号

型号	品牌	替代类型	描述	数据表
AD9709ASTZRL	ADI	完全替代	8-Bit, 125 MSPS Dual TxDAC+ Digital-to-Analog Converter
AD9709ASTZ	ADI	完全替代	8-Bit, 125 MSPS Dual TxDAC+ Digital-to-Analog Converter
AD9709AST	ADI	完全替代	8-Bit, 125 MSPS Dual TxDAC D/A Converter

与AD9709ASTRL相关器件

型号	品牌	获取价格	描述	数据表
AD9709ASTZ	ROCHESTER	获取价格	PARALLEL, 8 BITS INPUT LOADING, 0.035 us SETTLING TIME, 8-BIT DAC, PQFP48, ROHS COMPLIANT,
AD9709ASTZ	ADI	获取价格	8-Bit, 125 MSPS Dual TxDAC+ Digital-to-Analog Converter
AD9709ASTZ1	ADI	获取价格	8-Bit, 125 MSPS, Dual TxDAC Digital-to-Analog Converter
AD9709ASTZRL	ADI	获取价格	8-Bit, 125 MSPS Dual TxDAC+ Digital-to-Analog Converter
AD9709ASTZRL1	ADI	获取价格	8-Bit, 125 MSPS, Dual TxDAC Digital-to-Analog Converter
AD9709-EB	ADI	获取价格	8-Bit, 125 MSPS Dual TxDAC D/A Converter
AD9709-EBZ1	ADI	获取价格	8-Bit, 125 MSPS, Dual TxDAC Digital-to-Analog Converter
AD9712	ADI	获取价格	12-BIT, 100MSPS D/A CONVERTERS
AD9712AJN	ADI	获取价格	IC PARALLEL, WORD INPUT LOADING, 0.022 us SETTLING TIME, 12-BIT DAC, PDIP28, PLASTIC, DIP-
AD9712AJP	ADI	获取价格	IC PARALLEL, WORD INPUT LOADING, 0.022 us SETTLING TIME, 12-BIT DAC, PQCC28, PLASTIC, LCC-

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