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參數資料
| 型號： | AD9709 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 8-Bit, 125 MSPS Dual TxDAC D/A Converter |
| 中文描述： | 8位，125 MSPS的TxDAC系列雙D / A轉換 |
| 文件頁數： | 1/27頁 |
| 文件大小： | 466K |
| 代理商： | AD9709 |
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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.
a
AD9709
*
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 2000
8-Bit, 125 MSPS
Dual TxDAC+
D/A Converter
PRODUCT DESCRIPTION
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.
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.
The GAINCTRL pin allows two modes for setting the full-scale
current (I
OUTFS
) of the two DACs. I
OUTFS
for each DAC can be
set independently using two external resistors, or I
OUTFS
for
both DACs can be set using a single external resistor.
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 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.
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%.
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.
FEATURES
8-Bit Dual Transmit DAC
125 MSPS Update Rate
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
APPLICATIONS
Communications
Basestations
Digital Synthesis
Quadrature Modulation
3D Ultrasound
FUNCTIONAL BLOCK DIAGRAM
“1”
LATCH
“1”
DAC
REFIO
FSADJ1
FSADJ2
GAINCTRL
REFERENCE
BIAS
GENERATOR
I
OUTA1
I
OUTB1
SLEEP
I
OUTA2
I
OUTB2
DIGITAL
INTERFACE
AD9709
PORT1
PORT2
WRT1
WRT2
DVDD
DCOM
AVDD
ACOM
CLK1
CLK2
MODE
“2”
DAC
“2”
LATCH
TxDAC+ is a registered trademark of Analog Devices, Inc.
*
Patent pending.
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PDF描述 |
|---|---|
| AD9709AST | RES 0.01 OHM MAX 25 AMP AXIAL |
| AD9709-EB | 8-Bit, 125 MSPS Dual TxDAC D/A Converter |
| AD9712B | RES,0.0,0.25W,METAL FILM,0% |
| AD9712BAN | RES,0.0,0.25W,METAL FILM,0% |
| AD9712BAP | TEST POINT, WHITE, 0.040 HOLE, 0.062 PCB |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD9709_09 | 制造商:AD 制造商全稱:Analog Devices 功能描述:8-Bit, 125 MSPS, Dual TxDAC Digital-to-Analog Converter |
| AD9709ASF | 制造商:Analog Devices 功能描述:8BIT DUAL DAC W/POLY FUSE CALIBRATION - Bulk |
| AD9709AST | 制造商:Analog Devices 功能描述:DAC 2-CH Segment 8-bit 48-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:8-BIT 125 MSPS DUAL TXDAC+ D/A CONVERTER - Bulk 制造商:Analog Devices 功能描述:D/A Converter (D-A) IC |
| AD9709ASTRL | 制造商:Analog Devices 功能描述:DAC 2-CH Segment 8-bit 48-Pin LQFP T/R 制造商:Rochester Electronics LLC 功能描述:8-BIT 125 MSPS DUAL TXDAC+ D/A CONVERTER - Tape and Reel |
| AD9709ASTZ | 功能描述:IC DAC 8BIT DUAL 125MSPS 48-LQFP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 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:12 數據接口:串行 轉換器數目: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 輸出數目和類型:2 電壓，單極 采樣率（每秒）:* 產品目錄頁面:1398 (CN2011-ZH PDF) |
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