AD9772AAST

更新时间： 2024-01-19 19:34:29

品牌	Logo	应用领域
亚德诺 - ADI		转换器数模转换器
页数	文件大小	规格书
32页	591K
描述
14-Bit, 160 MSPS TxDAC+ with 2x Interpolation Filter

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AD9772AAST 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	QFP	包装说明：	PLASTIC, LQFP-48
针数：	48	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.81	最大模拟输出电压：	1.25 V
最小模拟输出电压：	-1 V	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-G48	JESD-609代码：	e0
长度：	7 mm	位数：	14
功能数量：	1	端子数量：	48
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：	LFQFP
封装等效代码：	QFP48,.35SQ,20	封装形状：	SQUARE
封装形式：	FLATPACK, LOW PROFILE, FINE PITCH	峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	3 V	认证状态：	Not Qualified
座面最大高度：	1.6 mm	标称安定时间 (tstl)：	0.011 µs
子类别：	Other Converters	标称供电电压：	3 V
表面贴装：	YES	技术：	CMOS
温度等级：	INDUSTRIAL	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	端子节距：	0.5 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	7 mm	Base Number Matches：	1

AD9772AAST 数据手册

14-Bit, 160 MSPS TxDAC+

with 2ꢀ Interpolation Filter

AD9772A

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Single 3.0 V to 3.6 V Supply

DIV1

CLKCOM CLKVDD MOD0 MOD1 RESET PLLLOCK DIV0

14-Bit DAC Resolution and Input Data Width

160 MSPS Input Data Rate

67.5 MHz Reconstruction Passband @ 160 MSPS

74 dBc SFDR @ 25 MHz

2ꢀ Interpolation Filter with High- or Low-Pass Response

73 dB Image Rejection with 0.005 dB Passband Ripple

“Zero-Stuffing” Option for Enhanced Direct IF

Performance

Internal 2ꢀ/4ꢀ Clock Multiplier

250 mW Power Dissipation; 13 mW with Power-Down

Mode

AD9772A

CLK+

CLK–

PLLCOM

LPF

CLOCK DISTRIBUTION

AND MODE SELECT

PLL CLOCK

MULTIPLIER

FILTER

MUX

PLLVDD

1ꢀ

ꢀ

2ꢀ

ꢀ

CONTROL CONTROL

ZERO

STUFF

MUX

DATA

INPUTS

(DB13...

DB0)

OUTA

2ꢀ FIR

INTER-

POLATION

FILTER

EDGE-

TRIGGERED

LATCHES

14-BIT DAC

OUTB

REFIO

FSADJ

+1.2V REFERENCE

AND CONTROL AMP

SLEEP

48-Lead LQFP Package

DCOM DVDD

ACOM AVDD

REFLO

APPLICATIONS

current source architecture is combined with a proprietary

switching technique to reduce spurious components and enhance

dynamic performance. Matching between the two current outputs

ensures enhanced dynamic performance in a differential output

configuration. The differential current outputs may be fed into a

transformer or a differential op amp topology to obtain a single-

ended output voltage using an appropriate resistive load.

Communication Transmit Channel

W-CDMA Base Stations, Multicarrier Base Stations,

Direct IF Synthesis, Wideband Cable Systems

Instrumentation

PRODUCT DESCRIPTION

The AD9772A is a single-supply, oversampling, 14-bit digital-

to-analog converter (DAC) optimized for baseband or IF

waveform reconstruction applications requiring exceptional

dynamic range. Manufactured on an advanced CMOS process,

it integrates a complete, low distortion 14-bit DAC with a 2ϫ

digital interpolation filter and clock multiplier. The on-chip

PLL clock multiplier provides all the necessary clocks for the

digital filter and the 14-bit DAC. A flexible differential clock

input allows for a single-ended or differential clock driver for

optimum jitter performance.

The on-chip bandgap reference and control amplifier are config-

ured for maximum accuracy and flexibility. The AD9772A can

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

reference voltages. The full-scale current of the AD9772A can

be adjusted over a 2 mA to 20 mA range, thus providing addi-

tional gain ranging capabilities.

The AD9772A is available in a 48-lead LQFP package and

specified for operation over the industrial temperature range

of –40°C to +85°C.

For baseband applications, the 2ϫ digital interpolation filter

provides a low-pass response, hence providing up to a threefold

reduction in the complexity of the analog reconstruction filter. It

does so by multiplying the input data rate by a factor of two

while simultaneously suppressing the original upper in-band

image by more than 73 dB. For direct IF applications, the 2ϫ

digital interpolation filter response can be reconfigured to select

the upper in-band image (i.e., high-pass response) while suppress-

ing the original baseband image. To increase the signal level of

the higher IF images and their passband flatness in direct IF

applications, the AD9772A also features a “zero stuffing” option

in which the data following the 2ϫ interpolation filter is upsampled

by a factor of two by inserting midscale data samples.

PRODUCT HIGHLIGHTS

1. A flexible, low power 2

ϫ interpolation filter supporting

reconstruction bandwidths of up to 67.5 MHz can be config-

ured for a low- or high-pass response with 73 dB of image

rejection for traditional baseband or direct IF applications.

2. A “zero-stuffing” option enhances direct IF applications.

3. A low glitch, fast settling 14-bit DAC provides exceptional

dynamic range for both baseband and direct IF waveform

reconstruction applications.

4. The AD9772A digital interface, consisting of edge-

triggered latches and a flexible differential or single-ended

clock input, can support input data rates up to 160 MSPS.

The AD9772A can reconstruct full-scale waveforms with band-

widths as high as 67.5 MHz while operating at an input data rate of

160 MSPS. The 14-bit DAC provides differential current outputs

to support differential or single-ended applications. A segmented

5. On-chip PLL clock multiplier generates all of the inter-

nal high-speed clocks required by the interpolation filter

and DAC.

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

6. The current output(s) of the AD9772A can easily be config-

ured for various single-ended or differential circuit topologies.

REV. A

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat

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

www.analog.com

12 3 4 5 6 7...32

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AD9772AAST 替代型号

型号	品牌	替代类型	描述	数据表
AD9772AASTRL	ADI	完全替代	IC PARALLEL, WORD INPUT LOADING, 0.011 us SETTLING TIME, 14-BIT DAC, PQFP48, MS-026BBC, LQ
AD9772AASTZ	ADI	完全替代	14-Bit, 160 MSPS TxDAC+® with 2x Interpolation Filter
AD9772AASTZRL	ADI	完全替代	暂无描述

与AD9772AAST相关器件

型号	品牌	获取价格	描述	数据表
AD9772AASTRL	ROCHESTER	获取价格	PARALLEL, WORD INPUT LOADING, 0.011 us SETTLING TIME, 14-BIT DAC, PQFP48, MS-026BBC, LQFP-
AD9772AASTRL	ADI	获取价格	IC PARALLEL, WORD INPUT LOADING, 0.011 us SETTLING TIME, 14-BIT DAC, PQFP48, MS-026BBC, LQ
AD9772AASTZ	ROCHESTER	获取价格	暂无描述
AD9772AASTZ	ADI	获取价格	14-Bit, 160 MSPS TxDAC+® with 2x Interpolation Filter
AD9772AASTZRL	ADI	获取价格	暂无描述
AD9772AASTZRL	ROCHESTER	获取价格	PARALLEL, WORD INPUT LOADING, 0.011 us SETTLING TIME, 14-BIT DAC, PQFP48, ROHS COMPLIANT,
AD9772AST	ADI	获取价格	14-Bit, 150 MSPS TxDAC⑩ with 2x Interpolation
AD9772ASTRL	ADI	获取价格	IC PARALLEL, WORD INPUT LOADING, 0.011 us SETTLING TIME, 14-BIT DAC, PQFP48, PLASTIC, LQFP
AD9772EB	ADI	获取价格	14-Bit, 150 MSPS TxDAC⑩ with 2x Interpolation
AD9773	ADI	获取价格	12-Bit, 160 MSPS 2】/4】/8】 Interpolating Dual

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