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參數資料
型號: AD9750AR
廠商: ANALOG DEVICES INC
元件分類: DAC
英文描述: 10-Bit, 125 MSPS High Performance TxDAC D/A Converter
中文描述: PARALLEL, WORD INPUT LOADING, 0.035 us SETTLING TIME, 10-BIT DAC, PDSO28
封裝: 0.300 INCH, SOIC-28
文件頁數: 1/22頁
文件大?。?/td> 302K
代理商: AD9750AR
REV. 0
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
AD9750*
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., 1999
10-Bit, 125 MSPS High Performance
TxDAC
D/A Converter
FUNCTIONAL BLOCK DIAGRAM
150pF
+1.20V REF
REFIO
FS ADJ
AVDD
ACOM
REFLO
ICOMP
CURRENT
SOURCE
ARRAY
+5V
SEGMENTED
SWITCHES
LSB
SWITCH
DVDD
DCOM
CLOCK
+5V
R
SET
0.1
m
F
CLOCK
IOUTA
IOUTB
0.1
m
F
LATCHES
AD9750
SLEEP
DIGITAL DATA INPUTS (DB9–DB0)
FEATURES
High Performance Member of Pin-Compatible
TxDAC Product Family
125 MSPS Update Rate
10-Bit Resolution
Excellent Spurious Free Dynamic Range Performance
SFDR to Nyquist @ 5 MHz Output: 76 dBc
Differential Current Outputs: 2 mA to 20 mA
Power Dissipation: 190 mW @ 5 V
Power-Down Mode: 20 mW @ 5 V
On-Chip 1.20 V Reference
CMOS-Compatible +2.7 V to +5.5 V Digital Interface
Packages: 28-Lead SOIC and TSSOP
Edge-Triggered Latches
APPLICATIONS
Wideband Communication Transmit Channel:
Direct IF
Basestations
Wireless Local Loop
Digital Radio Link
Direct Digital Synthesis (DDS)
Instrumentation
PRODUCT DESCRIPTION
The AD9750 is a 10-bit resolution, wideband, second generation
member of the TxDAC series of high performance, low power
CMOS digital-to-analog-converters (DACs). The TxDAC
family,
which consists of pin compatible 8-, 10-, 12-, and 14-bit DACs,
is specifically optimized for the transmit signal path of commu-
nication systems. All of the devices share the same interface
options, small outline package and pinout, thus providing an up-
ward or downward component selection path based on perfor-
mance, resolution and cost. The AD9750 offers exceptional ac and
dc performance while supporting update rates up to 125 MSPS.
The AD9750’s flexible single-supply operating range of 4.5 V to
5.5 V and low power dissipation are well suited for portable and
low power applications. Its power dissipation can be further
reduced to a mere 65 mW, without a significant degradation in
performance, by lowering the full-scale current output. Also, a
power-down mode reduces the standby power dissipation to
apprixmatley 20 mW.
The AD9750 is manufactured on an advanced CMOS process.
A segmented current source architecture is combined with a
proprietary switching technique to reduce spurious components
and enhance dynamic performance. Edge-triggered input latches
and a 1.2 V temperature compensated bandgap reference have
been integrated to provide a complete monolithic DAC solution.
The digital inputs support +2.7 V and +5 V CMOS logic families.
TxDAC is a registered trademark of Analog Devices, Inc.
*Protected by U.S. Patents Numbers 5450084, 5568145, 5689257, 5612697 and
5703519. Other patents pending.
The AD9750 is a current-output DAC with a nominal full-scale
output current of 20 mA and > 100 k
output impedance.
Differential current outputs are provided to support single-
ended or differential applications. Matching between the two
current outputs ensures enhanced dynamic performance in a
differential output configuration. The current outputs may be
tied directly to an output resistor to provide two complemen-
tary, single-ended voltage outputs or fed directly into a trans-
former. The output voltage compliance range is 1.25V.
The on-chip reference and control amplifier are configured for
maximum accuracy and flexibility. The AD9750 can be driven
by the on-chip reference or by a variety of external reference
voltages. The internal control amplifier, which provides a wide
(>10:1) adjustment span, allows the AD9750 full-scale current
to be adjusted over a 2 mA to 20 mA range while maintaining
excellent dynamic performance. Thus, the AD9750 may oper-
ate at reduced power levels or be adjusted over a 20 dB range to
provide additional gain ranging capabilities.
The AD9750 is available in 28-lead SOIC and TSSOP packages.
It is specified for operation over the industrial temperature range.
PRODUCT HIGHLIGHTS
1. The AD9750 is a member of the wideband TxDAC
high per-
formance product family that provides an upward or downward
component selection path based on resolution (8 to 14 bits),
performance and cost. The entire family of TxDACs is avail-
able in industry standard pinouts.
2. Manufactured on a CMOS process, the AD9750 uses a
proprietary switching technique that enhances dynamic
performance beyond that previously attainable by higher
power/cost bipolar or BiCMOS devices.
3. On-chip, edge-triggered input CMOS latches interface to
+2.7 V to +5 V CMOS logic families. The AD9750 can
support update rates up to 125 MSPS.
4. A flexible single-supply operating range of +4.5 V to +5.5 V,
and a wide full-scale current adjustment span of 2 mA to
20 mA, allows the AD9750 to operate at reduced power levels.
5. The current output(s) of the AD9750 can be easily config-
ured for various single-ended or differential circuit topologies.
相關PDF資料
PDF描述
AD9750ARU 10-Bit, 125 MSPS High Performance TxDAC D/A Converter
AD9750 10-Bit D/A Converter(100MSPS,10位D/A轉換器)
AD9752* 12-Bit. 125 MSPS High Performance TxDAC D/A Converter
AD9752-EB 12-Bit, 125 MSPS High Performance TxDAC D/A Converter
AD9752AR 12-Bit, 125 MSPS High Performance TxDAC D/A Converter
相關代理商/技術參數
參數描述
AD9750ARRL 制造商:Analog Devices 功能描述:DAC 1-CH Segment 10-bit 28-Pin SOIC W T/R 制造商:Rochester Electronics LLC 功能描述:10 BIT 125 MSPS+ TXDAC D/A CONVERTER - Bulk
AD9750ARU 制造商:Analog Devices 功能描述:DAC 1-CH Segment 10-bit 28-Pin TSSOP 制造商:Rochester Electronics LLC 功能描述:10 BIT 125 MSPS+ TXDAC D/A CONVERTER - Bulk
AD9750ARURL7 制造商:Analog Devices 功能描述:DAC 1-CH Segment 10-bit 28-Pin TSSOP T/R 制造商:Rochester Electronics LLC 功能描述:10 BIT 125 MSPS+ TXDAC D/A CONVERTER - Bulk
AD9750ARUZ 功能描述:IC DAC 10BIT 125MSPS 28TSSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數模轉換器 系列:TxDAC® 標準包裝:1 系列:- 設置時間:4.5µs 位數:12 數據接口:串行,SPI? 轉換器數目:1 電壓電源:單電源 功率耗散(最大):- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC(0.154",3.90mm 寬) 供應商設備封裝:8-SOICN 包裝:剪切帶 (CT) 輸出數目和類型:1 電壓,單極;1 電壓,雙極 采樣率(每秒):* 其它名稱:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND
AD9750ARUZRL7 功能描述:IC DAC 10BIT 125MSPS 28TSSOP 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:LTC263x 12-, 10-, and 8-Bit VOUT DAC Family 特色產品:LTC2636 - Octal 12-/10-/8-Bit SPI VOUT DACs with 10ppm/°C Reference 標準包裝:91 系列:- 設置時間:4µs 位數:10 數據接口:MICROWIRE?,串行,SPI? 轉換器數目:8 電壓電源:單電源 功率耗散(最大):2.7mW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤 供應商設備封裝:14-DFN-EP(4x3) 包裝:管件 輸出數目和類型:8 電壓,單極 采樣率(每秒):*
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