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| 型號： | AD5449YRUZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/29頁 |
| 文件大小： | 0K |
| 描述： | IC DAC DUAL 12BIT MULT 16TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Data Converter Fundamentals DAC Architectures |
| 標準包裝： | 1,000 |
| 設(shè)置時間： | 80ns |
| 位數(shù)： | 12 |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 2 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 3.5µW |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-TSSOP |
| 包裝： | 帶卷 (TR) |
| 輸出數(shù)目和類型： | 4 電流，單極；4 電流，雙極 |
| 采樣率（每秒）： | 2.47M |
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Dual 8-/10-/12-Bit, High Bandwidth,
Multiplying DACs with Serial Interface
Data Sheet
Rev. E
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
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
2004–2013 Analog Devices, Inc. All rights reserved.
FEATURES
10 MHz multiplying bandwidth
INL of ±0.25 LSB @ 8 bits
16-lead TSSOP package
2.5 V to 5.5 V supply operation
±10 V reference input
50 MHz serial interface
2.47 MSPS update rate
Extended temperature range: 40°C to +125°C
4-quadrant multiplication
Power-on reset
0.5 A typical current consumption
Guaranteed monotonic
Daisy-chain mode
Readback function
APPLICATIONS
Portable battery-powered applications
Waveform generators
Analog processing
Instrumentation applications
Programmable amplifiers and attenuators
Digitally controlled calibration
Programmable filters and oscillators
Composite video
Ultrasound
Gain, offset, and voltage trimming
GENERAL DESCRIPTION
The AD5429/AD5439/AD54491 are CMOS, 8-, 10-, and 12-bit,
dual-channel, current output digital-to-analog converters (DAC),
respectively. These devices operate from a 2.5 V to 5.5 V power
supply, making them suited to battery-powered and other
applications.
As a result of being manufactured on a CMOS submicron process,
these parts offer excellent 4-quadrant multiplication character-
istics, with large signal multiplying bandwidths of 10 MHz.
The applied external reference input voltage (VREF) determines
the full-scale output current. An integrated feedback resistor
(RFB) provides temperature tracking and full-scale voltage
output when combined with an external current-to-voltage
precision amplifier.
These DACs use a double-buffered, 3-wire serial interface that
is compatible with SPI, QSPI, MICROWIRE, and most DSP
interface standards. In addition, a serial data out (SDO) pin allows
daisy-chaining when multiple packages are used. Data readback
allows the user to read the contents of the DAC register via the
SDO pin. On power-up, the internal shift register and latches
are filled with 0s, and the DAC outputs are at zero scale.
The AD5429/AD5439/AD5449 DACs are available in 16-lead
TSSOP packages. The EV-AD5415/49SDZ evaluation board is
available for evaluating DAC performance. For more
information, see the UG-297 evaluation board user guide.
FUNCTIONAL BLOCK DIAGRAM
SYNC
AD5429/AD5439/AD5449
VREFB
VREFA
SCLK
SDIN
IOUT1B
IOUT1A
8-/10-/12-BIT
R-2R DAC A
8-/10-/12-BIT
R-2R DAC B
RFBA
POWER-ON
RESET
DAC
REGISTER
DAC
REGISTER
RFB
R
RFB
R
IOUT2A
IOUT2B
LDAC
04464-001
VDD
CLR
RFBB
INPUT
REGISTER
INPUT
REGISTER
SHIFT
REGISTER
LDAC
SDO
Figure 1.
1
U.S. Patent Number 5,689,257.
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