- 您現在的位置：買賣IC網 > PDF目錄373967 > AD9767AST (ANALOG DEVICES INC) 14-Bit, 125 MSPS Dual TxDAC+ D/A Converter PDF資料下載
參數資料
| 型號： | AD9767AST |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | 14-Bit, 125 MSPS Dual TxDAC+ D/A Converter |
| 中文描述： | DUAL, PARALLEL, WORD INPUT LOADING, 0.035 us SETTLING TIME, 14-BIT DAC, PQFP48 |
| 封裝： | MS-026BBC, LQFP-48 |
| 文件頁數： | 1/27頁 |
| 文件大小： | 469K |
| 代理商： | AD9767AST |
當前第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁
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.
a
AD9767
*
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
14-Bit, 125 MSPS
Dual TxDAC+
D/A Converter
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
AD9767
PORT1
PORT2
WRT1
WRT2
DVDD
DCOM
AVDD
ACOM
CLK1
CLK2
MODE
“2”
DAC
“2”
LATCH
FEATURES
14-Bit Dual Transmit DAC
125 MSPS Update Rate
Excellent SFDR and IMD: 82 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
Base Stations
Digital Synthesis
Quadrature Modulation
PRODUCT DESCRIPTION
The AD9767 is a dual port, high speed, two channel, 14-bit
CMOS DAC. It integrates two high quality 14-bit TxDAC+
cores, a voltage reference and digital interface circuitry into a small
48-lead LQFP package. The AD9767 offers exceptional ac and
dc performance while supporting update rates up to 125 MSPS.
The AD9767 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 AD9767 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 by using a single external resistor.
**
The DACs utilize a segmented current source architecture com-
bined 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 AD9767 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 AD9767 is a member of a pin-compatible family of dual
TxDACs providing 8-, 10-, 12- and 14-bit resolution.
2. Dual 14-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 AD9767 includes a 1.20 V
temperature-compensated bandgap voltage reference.
6. Dual 14-Bit Inputs: The AD9767 features a flexible dual-
port interface allowing dual or interleaved input data.
TxDAC+ is a registered trademark of Analog Devices, Inc.
*
*
Patent pending.
**
Please see GAINCTRL Mode section, for important date code information on
this feature.
相關PDF資料 |
PDF描述 |
|---|---|
| AD9768 | Ultrahigh Speed IC D/A Converter |
| AD9768SD | Ultrahigh Speed IC D/A Converter |
| AD9768SE | Ultrahigh Speed IC D/A Converter |
| AD9768JD | Ultrahigh Speed IC D/A Converter |
| AD977AN | 16-Bit, 100 kSPS/200 kSPS BiCMOS A/D Converter |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD9767ASTRL | 制造商:Analog Devices 功能描述:DAC 2-CH Segment 14-bit 48-Pin LQFP T/R 制造商:Rochester Electronics LLC 功能描述:14-BIT, 125 MSPS DUAL TXDAC+ - Tape and Reel |
| AD9767ASTZ | 功能描述:IC DAC 14BIT DUAL 125MSPS 48LQFP 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) |
| AD9767ASTZ | 制造商:Analog Devices 功能描述:D/A CONVERTER (D-A) IC ((NW)) |
| AD9767ASTZAIRBUS | 制造商:Analog Devices 功能描述: |
| AD9767ASTZKL1 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
發布緊急采購，3分鐘左右您將得到回復。