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參數(shù)資料
| 型號： | DAC8408GPZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 4/16頁 |
| 文件大小： | 0K |
| 描述： | IC DAC 8BIT QUAD W/MEMORY 28DIP |
| 產品培訓模塊： | Data Converter Fundamentals DAC Architectures |
| 標準包裝： | 13 |
| 設置時間： | 190ns |
| 位數(shù)： | 8 |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉換器數(shù)目： | 4 |
| 電壓電源： | 單電源 |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 28-DIP（0.600"，15.24mm） |
| 供應商設備封裝： | 28-PDIP |
| 包裝： | 管件 |
| 輸出數(shù)目和類型： | 4 電流，單極；4 電流，雙極 |
| 采樣率（每秒）： | 5.26M |
DAC8408
–12–
REV. A
SINGLE SUPPLY, VOLTAGE OUTPUT OPERATION
The 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 (IOUT 1A), and the normal VREF input pin becomes the DAC
output. Instead of a normal current output, the R-2R ladder out-
puts a voltage. The 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. Table 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. To
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. This is because the CMOS switches require a mini-
mum level of bias in order to maintain the linearity performance.
Table III. Single Supply Binary Code Table (Refer to Figure 8)
DAC Data Input
MSB
LSB
Analog Output
1 1 1 1 1 1 1 1
VREF
255
256
, +1.4941 V
1 0 0 0 0 0 0 1
VREF
129
256
, +0.7559 V
1 0 0 0 0 0 0 0
VREF
128
256
, +0.7500 V
0 1 1 1 1 1 1 1
VREF
127
256
, +0.7441 V
0 0 0 0 0 0 0 1
VREF
1
256
, +0.0059 V
0 0 0 0 0 0 0 0
VREF
0
256
, 0.0000 V
Figure 8. Unipolar Supply, Voltage Output DAC Operation
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DAC8408HP | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Analog Devices 功能描述: |
| DAC8411 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.8V to 5.5V, 80mA, 14- and 16-Bit, Low-Power, Single-Channel,DIGITAL-TO-ANALOG CONVERTERS in SC70 Package |
| DAC8411EVM | 功能描述:數(shù)據(jù)轉換 IC 開發(fā)工具 DAC8411 Eval Mod RoHS:否 制造商:Texas Instruments 產品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| DAC8411EVM | 制造商:Texas Instruments 功能描述:Development Tool |
| DAC8411EVM-PDK | 功能描述:數(shù)據(jù)轉換 IC 開發(fā)工具 DAC8411 Perf Demo Kit RoHS:否 制造商:Texas Instruments 產品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
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