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參數(shù)資料
| 型號： | AD7249 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Dual 12-Bit Serial DACPORT(雙通道LC2MOS 12位串行D/A轉(zhuǎn)換器) |
| 中文描述： | 雙路12位串行DACPORT（雙通道LC2MOS 12位串行的D / A轉(zhuǎn)換器） |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 232K |
| 代理商： | AD7249 |
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
LC
2
MOS
Dual 12-Bit Serial DACPORT
AD7249
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
GE NE RAL DE SCRIPT ION
T he AD7249 DACPORT contains a pair of 12-bit, voltage-
output, digital-to-analog converters with output amplifiers and
Zener voltage reference on a monolithic CMOS chip. No exter-
nal trims are required to achieve full specified performance.
T he output amplifiers are capable of developing +10 V across a
2 k
load. T he output voltage ranges with single supply opera-
tion are 0 V to +5 V or 0 V to +10 V, while an additional bipolar
±
5 V output range is available with dual supplies. T he ranges
are selected using the internal gain resistor.
Interfacing to the AD7249 is serial, minimizing pin count and
allowing a small package size. Standard control signals allow in-
terfacing to most DSP processors and microcontrollers. T he
data stream consists of 16 bits, DB15 to DB13 are don’t care
bits, the 13th bit (DB12) is used as the channel select bit and
the remaining 12 bits (DB11 to DB0) contain the data to update
the DAC. T he 16-bit data word is clocked into the input register
on each falling SCLK edge.
T he data format is natural binary in both unipolar ranges, while
either offset binary or twos complement format may be selected
in the bipolar range. A
CLR
function is provided which sets the
output to 0 V in both unipolar ranges and in the twos comple-
ment bipolar range, while with offset binary data format, the
output is set to –REFIN. T his function is useful as a power-on
reset as it allows the outputs to be set to a known voltage level.
DAC PORT is a registered trademark of Analog Devices, Inc.
T he AD7249 features a serial interface which allows easy con-
nection to both microcomputers and 16-bit digital signal proces-
sors with serial ports. T he serial data may be applied at rates up
to 2 MHz allowing a DAC update rate of 125 kHz.
T he AD7249 is fabricated on linear compatible CMOS
(LC
2
MOS), an advanced, mixed technology process. It is pack-
aged in 16-pin DIP and 16-pin SOIC packages.
PRODUCT HIGHLIGHT S
1. T wo complete 12-bit DACPORT s
T he AD7249 contains two complete voltage output, 12-bit
DACs in both 16-lead DIP and SOIC packages.
2. Single or dual supply operation
3. Minimum 3-wire interface to most DSP processors
4. DAC update rate—125 kHz
FUNCT IONAL BLOCK DIAGRAM
REFIN
V
DD
DGND
REFOUT
AGND
12-BIT
V
OUTB
R
OFSB
12-BIT
V
OUTA
R
OFSA
V
SS
BIN/COMP
CLR
LDAC
SDIN
SYNC
SCLK
AD7249
2R
2R
A1
2R
2R
A2
INPUT SHIFT REGISTER
FEATURES
Two 12-Bit CMOS DAC Channels with
On-Chip Voltage Reference
Output Amplifiers
Three Selectable Output Ranges per Channel
–5 V to +5 V, 0 V to +5 V, 0 V to +10 V
Serial Interface
125 kHz DAC Update Rate
Small Size: 16-Pin DIP or SOIC
Low Power Dissipation
APPLICATIONS
Process Control
Industrial Automation
Digital Signal Processing Systems
Input/Output Ports
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7249AN | 功能描述:IC DAC 12BIT SRL W/REF 16-DIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:DACPORT® 產(chǎn)品培訓(xùn)模塊:Data Converter Fundamentals DAC Architectures 標(biāo)準(zhǔn)包裝:750 系列:- 設(shè)置時(shí)間:7µs 位數(shù):16 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:雙 ± 功率耗散（最大）:100mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-LCC（J 形引線） 供應(yīng)商設(shè)備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
| AD7249ANZ | 功能描述:IC DAC 12BIT SRL W/REF 16-DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:DACPORT® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 設(shè)置時(shí)間:4µs 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）:- 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(yīng)商設(shè)備封裝:8-uMAX 包裝:管件 輸出數(shù)目和類型:2 電壓，單極 采樣率（每秒）:* 產(chǎn)品目錄頁面:1398 (CN2011-ZH PDF) |
| AD7249ANZ | 制造商:Analog Devices 功能描述:IC 12-BIT DAC |
| AD7249AR | 功能描述:IC DAC 12BIT SRL W/REF 16-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:DACPORT® 產(chǎn)品培訓(xùn)模塊:Data Converter Fundamentals DAC Architectures 標(biāo)準(zhǔn)包裝:750 系列:- 設(shè)置時(shí)間:7µs 位數(shù):16 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:雙 ± 功率耗散（最大）:100mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-LCC（J 形引線） 供應(yīng)商設(shè)備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
| AD7249AR-REEL | 功能描述:數(shù)模轉(zhuǎn)換器- DAC LC2MOS DUAL 12-BIT SERIAL IC RoHS:否 制造商:Analog Devices 轉(zhuǎn)換器數(shù)量:4 DAC 輸出端數(shù)量:4 轉(zhuǎn)換速率: 分辨率:12 bit 接口類型:Serial (I2C) 穩(wěn)定時(shí)間: 最大工作溫度:+ 105 C 安裝風(fēng)格: 封裝 / 箱體:TSSOP 封裝:Reel |
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