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參數(shù)資料
| 型號： | AD9772AAST |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | 14-Bit, 160 MSPS TxDAC+ with 2x Interpolation Filter |
| 中文描述： | PARALLEL, WORD INPUT LOADING, 0.011 us SETTLING TIME, 14-BIT DAC, PQFP48 |
| 封裝： | MS-026BBC, LQFP-48 |
| 文件頁數(shù)： | 1/32頁 |
| 文件大小： | 596K |
| 代理商： | AD9772AAST |
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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, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
a
AD9772A
Tel: 781/329-4700Fax: 781/326-8703
Analog Devices, Inc., 200214-Bit, 160 MSPS TxDAC+
with 2
Interpolation Filter
FUNCTIONAL BLOCK DIAGRAM
14-BIT DAC
2 FIR
INTER-
POLATION
FILTER
EDGE-
TRIGGERED
LATCHES
CLOCK DISTRIBUTION
AND MODE SELECT
2 /4
MUX
CONTROL
FILTER
CONTROL
1 /2
1
PLL CLOCK
MULTIPLIER
+1.2V REFERENCE
AND CONTROL AMP
AD9772A
CLKCOM
CLKVDD
MOD0 MOD1 RESET
PLLLOCK
DIV0 DIV1
CLK+
CLK–
DATA
INPUTS
(DB13...
DB0)
SLEEP
DCOM DVDD
ACOM AVDD
REFLO
PLLCOM
LPF
PLLVDD
I
OUTA
I
OUTB
REFIO
FSADJ
ZERO
STUFF
MUX
FEATURES
Single 3.0 V to 3.6 V Supply
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
2
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 2 /4 Clock Multiplier
250 mW Power Dissipation; 13 mW with Power-Down
Mode
48-Lead LQFP Package
APPLICATIONS
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 2
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.
For baseband applications, the 2 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 2
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 2 interpolation filter is upsampled
by a factor of two by inserting midscale data samples.
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
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.
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.
PRODUCT HIGHLIGHTS
1. A flexible, low power 2 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.
5. On-chip PLL clock multiplier generates all of the inter-
nal high-speed clocks required by the interpolation filter
and DAC.
6. The current output(s) of the AD9772A can easily be config-
ured for various single-ended or differential circuit topologies.
TxDAC+ is a registered trademark of Analog Devices, Inc.
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| AD9772 | 14-Bit,150 MSPS T×DAC+TM with 2× Interpolation Filter(單電源,過采樣,14位D/A轉換器) |
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| AD9773AST | 12-Bit, 160 MSPS 2】/4】/8】 Interpolating Dual TxDAC+ D/A Converter |
| AD9773EB | 12-Bit, 160 MSPS 2】/4】/8】 Interpolating Dual TxDAC+ D/A Converter |
| AD9774AS | 14-Bit, 32 MSPS TxDAC⑩ with 4x Interpolation Filters |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD9772AASTRL | 制造商:Analog Devices 功能描述:DAC 1-CH Segment 14-bit 48-Pin LQFP T/R |
| AD9772AASTZ | 功能描述:IC DAC 14BIT 160MSPS 48-LQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據采集 - 數(shù)模轉換器 系列:TxDAC+® 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 設置時間:4µs 位數(shù):12 數(shù)據接口:串行 轉換器數(shù)目:2 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:8-uMAX 包裝:管件 輸出數(shù)目和類型:2 電壓，單極 采樣率（每秒）:* 產品目錄頁面:1398 (CN2011-ZH PDF) |
| AD9772AASTZRL | 功能描述:IC DAC 14BIT 160MSPS 48LQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據采集 - 數(shù)模轉換器 系列:TxDAC+® 產品培訓模塊:Data Converter Fundamentals DAC Architectures 標準包裝:750 系列:- 設置時間:7µs 位數(shù):16 數(shù)據接口:并聯(lián) 轉換器數(shù)目:1 電壓電源:雙 ± 功率耗散（最大）:100mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-LCC（J 形引線） 供應商設備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
| AD9772A-EB | 制造商:Analog Devices 功能描述:14 BIT DAC W/2X INTERPOLATION 制造商:Analog Devices 功能描述:DEV TOOLS, EVAL BD FOR AD9772A - Bulk |
| AD9772A-EBZ | 功能描述:BOARD EVAL FOR AD9772A RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 數(shù)模轉換器 (DAC) 系列:TxDAC+® 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- DAC 的數(shù)量:4 位數(shù):12 采樣率（每秒）:- 數(shù)據接口:串行，SPI? 設置時間:3µs DAC 型:電流/電壓 工作溫度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581 |
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