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參數(shù)資料
| 型號(hào)： | DAC8408 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Quad 8-Bit Multiplying CMOS D/A Converter with Memory(帶存儲(chǔ)器的四路8位乘法D/A轉(zhuǎn)換器) |
| 中文描述： | 四8位乘法的CMOS的D / A轉(zhuǎn)換器與內(nèi)存（帶存儲(chǔ)器的四路8位乘法的D / A轉(zhuǎn)換器） |
| 文件頁(yè)數(shù)： | 12/16頁(yè) |
| 文件大?。?/td> | 230K |
| 代理商： | DAC8408 |
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DAC8408
–12–
REV. A
SINGLE SUPPLY , VOLT AGE OUT PUT OPE RAT ION
T he DAC8408 can be connected with a single +5 V supply to
produce DAC output voltages from 0 V to +1.5 V. In Figure 8,
the DAC8408 R-2R ladder is inverted from its normal connec-
tion. A +1.500 V reference is connected to the current output pin
4 (I
OUT 1A
), and the normal V
REF
input pin becomes the DAC
output. Instead of a normal current output, the R-2R ladder out-
puts a voltage. T he OP-490, consisting of four precision low
power op amps that can operate its inputs and outputs to zero
volts, buffers the DAC to produce a low impedance output volt-
age from 0 V to +1.5 V full-scale. T able III shows the code table.
With the supply and reference voltages as shown, better than 1/2
LSB differential and integral nonlinearity can be expected. T o
maintain this performance level, the +5 V supply must not drop
below 4.75 V. Similarly, the reference voltage must be no higher
than 1.5 V. T his is because the CMOS switches require a mini-
mum level of bias in order to maintain the linearity performance.
T able III. Single Supply Binary Code T able (Refer to Figure 8)
DAC Data Input
MSB
LSB
Analog Output
1 1 1 1 1 1 1 1
V
REF
255
256
, +1.4941 V
1 0 0 0 0 0 0 1
V
REF
129
256
, +0.7559 V
1 0 0 0 0 0 0 0
V
REF
128
256
, +0.7500 V
0 1 1 1 1 1 1 1
V
REF
127
256
, +0.7441 V
0 0 0 0 0 0 0 1
V
REF
1
256
, +0.0059 V
0 0 0 0 0 0 0 0
V
REF
0
256
, 0.0000 V
Figure 8. Unipolar Supply, Voltage Output DAC Operation
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DAC8408AT | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Quad 8-Bit Multiplying CMOS D/A Converter with Memory |
| DAC8408AT/883 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:8-Bit Digital-to-Analog Converter |
| DAC8408AT/883C | 功能描述:數(shù)模轉(zhuǎn)換器- DAC QUAD 8-BIT CMOS DAC-LEV.B RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類(lèi)型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| DAC8408AT2 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Quad 8-Bit Multiplying CMOS D/A Converter with Memory |
| DAC8408BIET | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Analog Devices 功能描述: |
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