AD9774ASZ

更新时间： 2024-01-30 19:38:44

品牌	Logo	应用领域
亚德诺 - ADI		过滤器
页数	文件大小	规格书
24页	302K
描述
14-Bit, 32 MSPS TxDACâ¢ with 43 Interpolation Filters

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AD9774ASZ 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	QFP
包装说明：	QFP, QFP44,.5SQ,32	针数：	44
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.81
Samacsys Description：	Interpolation Filters	转换器类型：	D/A CONVERTER
输入位码：	BINARY	输入格式：	PARALLEL, WORD
JESD-30 代码：	S-PQFP-G44	JESD-609代码：	e3
长度：	10 mm	湿度敏感等级：	3
位数：	14	功能数量：	1
端子数量：	44	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	QFP	封装等效代码：	QFP44,.5SQ,32
封装形状：	SQUARE	封装形式：	FLATPACK
峰值回流温度（摄氏度）：	260	电源：	3/5,5 V
认证状态：	Not Qualified	座面最大高度：	2.45 mm
标称安定时间 (tstl)：	0.035 µs	子类别：	Other Converters
标称供电电压：	5 V	表面贴装：	YES
技术：	CMOS	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn)	端子形式：	GULL WING
端子节距：	0.8 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	40	宽度：	10 mm

AD9774ASZ 数据手册

14-Bit, 32 MSPS TxDAC+™

with 4

Interpolation Filters

AD9774

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Single 3 V or 5 V Supply

14-Bit DAC Resolution and Input Data Width

32 MSPS Input Data Rate at 5 V

13.5 MHz Reconstruction Bandwidth

12 ENOBS @ 1 MHz

77 dBc SFDR @ 5 MHz

Interpolation Filter

PLL

DIVIDE

VCO

IN/EXT

PLL

CLK4

IN PLLLOCK ENABLE

PLLCOM

LPF

AD9774

PLL CLOCK

MULTIPLIER

CLK IN/OUT

PLLVDD

69 dB Image Rejection

DATA

INPUTS

(DB13-DB0)

IOUTA

IOUTB

EDGE

TRIGGERED

LATCHES

14-BIT

DAC

84% Passband to Nyquist Ratio

0.002 dB Passband Ripple

23 3/4 Cycle Latency

Internal 4

Clock Multiplier

On-Chip 1.20 V Reference

44-Lead MQFP Package

SNOOZE

SLEEP

REFIO

FSADJ

+1.2V REFERENCE

AND CONTROL AMP

REFLO REFCOMP

ICOMP ACOM AVDD

DVDD

DCOM

APPLICATIONS

Communication Transmit Channel:

Wireless Basestations

ADSL/HFC Modems

Direct Digital Synthesis (DDS)

Edge-triggered input latches, a 4× clock multiplier, and a tem-

perature compensated bandgap reference have also been inte-

grated to provide a complete monolithic DAC solution. Flexible

supply options support +3 V and +5 V CMOS logic families.

TTL logic levels can also be accommodated by reducing the

AD9774 digital supply.

PRODUCT DESCRIPTION

The on-chip reference and control amplifier are configured for

maximum accuracy and flexibility. The AD9774 can be driven

by the on-chip reference or by a variety of external reference

voltages. The full-scale current of the AD9774 can be adjusted

over a 2 mA to 20 mA range, thus providing additional gain

ranging capabilities.

The AD9774 is a single supply, oversampling, 14-bit digital-to-

analog converter (DAC) optimized for waveform reconstruction

applications requiring exceptional dynamic range. Manufac-

tured on an advanced CMOS process, it integrates a complete,

low distortion 14-bit DAC with a 4× digital interpolation filter

and clock multiplier. The two-stage, 4× digital interpolation

filter provides more than a six-fold reduction in the complexity

of the analog reconstruction-filter. It does so by multiplying the

input data rate by a factor of four while simultaneously suppressing

the original inband images by more than 69 dB. The on-chip

clock multiplier provides all the necessary clocks. The AD9774

can reconstruct full-scale waveforms having bandwidths as high

as 13.5 MHz when operating at an input data rate of 32 MSPS

and a DAC output rate of 128 MSPS.

The AD9774 is available in a 44-lead MQFP package. It is

specified for operation over the industrial temperature range.

PRODUCT HIGHLIGHTS

1. On-Chip 4× interpolation filter eases analog reconstruction

filter requirements by suppressing the first three images by 69 dB.

2. Low glitch and fast settling time provide outstanding dynamic

performance for waveform reconstruction or digital synthesis

requirements, including communications.

The 14-bit DAC provides differential current outputs to support

differential or single-ended applications. A segmented current

source architecture is combined with a proprietary switching tech-

nique to reduce spurious components and enhance dynamic per-

formance. Matching between the two current outputs ensures

enhanced dynamic performance in a differential output configura-

tion. The differential current outputs may be fed into a transformer

or tied directly to an output resistor to provide two complementary,

single-ended voltage outputs. A differential op amp topology can

also be used to obtain a single-ended output voltage. The output

voltage compliance range is nominally 1.25 V.

3. On-chip, edge-triggered input CMOS latches interface readily

to CMOS and TTL logic families. The AD9774 can support

input data rates up to 32 MSPS.

4. A temperature compensated, 1.20 V bandgap reference is

included on-chip, providing a complete DAC solution. An

external reference may also be used.

5. The current output(s) of the AD9774 can easily be configured

for various single-ended or differential circuit topologies.

6. On-chip clock multiplier generates all the high-speed clocks

required by the internal interpolation filters. Both 2× and 4×

clocks are generated from the lower rate data clock supplied

by the user.

TxDAC+ is a trademark of Analog Devices, Inc.

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

12 3 4 5 6 7...24

中文翻译

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AD9774ASZ 替代型号

型号	品牌	替代类型	描述	数据表
AD9774AS	ADI	完全替代	14-Bit, 32 MSPS TxDAC⑩ with 4x Interpolation

与AD9774ASZ相关器件

型号	品牌	获取价格	描述	数据表
AD9774EB	ADI	获取价格	14-Bit, 32 MSPS TxDAC⑩ with 4x Interpolation
AD9775	ADI	获取价格	14-Bit, 160 MSPS 2X/4X/8X Interpolating Dual TxDAC+ D/A Converter
AD9775BSV	ADI	获取价格	14-Bit, 160 MSPS 2X/4X/8X Interpolating Dual TxDAC+ D/A Converter
AD9775BSV	ROCHESTER	获取价格	PARALLEL, WORD INPUT LOADING, 0.011 us SETTLING TIME, 14-BIT DAC, PQFP80, PLASTIC, MO-026-
AD9775BSVRL	ADI	获取价格	IC PARALLEL, WORD INPUT LOADING, 0.011 us SETTLING TIME, 14-BIT DAC, PQFP80, PLASTIC, MO-0
AD9775BSVZ	ADI	获取价格	14-Bit, 160 MSPS, 2x/4x/8x Interpolating Dual TxDAC+ ® D/A Converter
AD9775BSVZ	ROCHESTER	获取价格	PARALLEL, WORD INPUT LOADING, 0.011 us SETTLING TIME, 14-BIT DAC, PQFP80, LEAD FREE, PLAST
AD9775BSVZRL	ADI	获取价格	14-Bit, 160 MSPS, 2x/4x/8x Interpolating Dual TxDAC+ ® D/A Converter
AD9775EB	ADI	获取价格	14-Bit, 160 MSPS 2X/4X/8X Interpolating Dual TxDAC+ D/A Converter
AD9776	ADI	获取价格	300 MHz to 1000 MHz Quadrature Modulator

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