參數資料
| 型號： | AD9772AASTZRL |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 1/40頁 |
| 文件大小： | 0K |
| 描述： | IC DAC 14BIT 160MSPS 48LQFP |
| 產品培訓模塊： | DAC Architectures |
| 標準包裝： | 2,000 |
| 系列： | TxDAC+® |
| 設置時間： | 11ns |
| 位數： | 14 |
| 數據接口： | 并聯 |
| 轉換器數目： | 1 |
| 電壓電源： | 模擬和數字 |
| 功率耗散（最大）： | 272mW |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-LQFP |
| 供應商設備封裝： | 48-LQFP（7x7） |
| 包裝： | 帶卷 (TR) |
| 輸出數目和類型： | 2 電流，單極；2 電流，雙極 |
| 采樣率（每秒）： | 160M |
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14-Bit, 160 MSPS TxDAC+
with 2× Interpolation Filter
AD9772A
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2008 Analog Devices, Inc. All rights reserved.
FEATURES
Single 3.1 V to 3.5 V supply
14-bit DAC resolution and input data width
160 MSPS input data rate
67.5 MHz reconstruction pass band @ 160 MSPS
74 dBc SFDR @ 25 MHz
2× interpolation filter with high- or low-pass response
73 dB image rejection with 0.005 dB pass-band 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
FUNCTIONAL BLOCK DIAGRAM
14-BIT DAC
2× FIR
INTER-
POLATION
FILTER
EDGE-
TRIGGERED
LATCHES
CLOCK DISTRIBUTION
AND MODE SELECT
MUX
CONTROL
FILTER
CONTROL
1×/2×
2×/4×
1×
PLL CLOCK
MULTIPLIER
1.2V REFERENCE
AND CONTROL AMP
AD9772A
CLKCOM CLKVDD MOD0 MOD1 RESET PLLLOCK DIV0 DIV1
CLK+
CLK–
DATA
INPUTS
(DB13 TO
DB0)
SLEEP
DCOM DVDD
ACOM AVDD
REFLO
PLLCOM
LPF
PLLVDD
IOUTA
IOUTB
REFIO
FSADJ
ZERO-
STUFF
MUX
0
2253-
001
Figure 1.
GENERAL 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, thus providing as much as a
threefold reduction in the complexity of the analog reconstruc-
tion filter. It does so by multiplying the input data rate by a
factor of 2 while 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 (that is, the high-pass response) while
suppressing the original baseband image. To increase the signal
level of the higher IF images and their pass-band 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 2 by inserting midscale data samples.
The AD9772A can reconstruct full-scale waveforms with band-
widths of up to 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 can 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 band gap reference and control amplifier are con-
figured 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 additional gain-ranging capabilities.
The AD9772A is available in a 48-lead LQFP package and is
specified for operation over the industrial temperature range of
–40°C to +85°C.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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，開發系統 >> 評估板 - 數模轉換器 (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 的數量:4 位數:12 采樣率（每秒）:- 數據接口: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 |
| AD9772AST | 制造商:Rochester Electronics LLC 功能描述:14 BIT DAC W/2X INTERPOLA - Tape and Reel |
| AD9772EB | 制造商:AD 制造商全稱:Analog Devices 功能描述:14-Bit, 160 MSPS TxDAC+ with 2x Interpolation Filter |
| AD9773 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Analog Devices: Data Converters: DAC 12-Bit, 10 ns to 100 ns Converters Selection Table |
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