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参数资料
| 型号： | DAC8408BT |
| 厂商： | PRECISION MONOLITHICS INC |
| 元件分类： | DAC |
| 英文描述： | Quad 8-Bit Multiplying CMOS D/A Converter with Memory |
| 中文描述： | 8-BIT DAC, CDIP28 |
| 文件页数： | 12/16页 |
| 文件大小： | 217K |
| 代理商： | DAC8408BT |
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
相关PDF资料 |
PDF描述 |
|---|---|
| DAC8408ET | Quad 8-Bit Multiplying CMOS D/A Converter with Memory |
| DAC8408FP | Quad 8-Bit Multiplying CMOS D/A Converter with Memory |
| DAC8408FPC | Quad 8-Bit Multiplying CMOS D/A Converter with Memory |
| DAC8408FS | Quad 8-Bit Multiplying CMOS D/A Converter with Memory |
| DAC8408FT | Quad 8-Bit Multiplying CMOS D/A Converter with Memory |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DAC8408BT2 | 制造商:AD 制造商全称:Analog Devices 功能描述:Quad 8-Bit Multiplying CMOS D/A Converter with Memory |
| DAC8408BTC/883C | 制造商:Analog Devices 功能描述:DAC 制造商:Rochester Electronics LLC 功能描述:QUAD 8-BIT MULT DAC-LEV.B - Bulk |
| DAC8408ET | 制造商:Analog Devices 功能描述: |
| DAC8408FP | 功能描述:IC DAC 8BIT QUAD W/MEMORY 28-DIP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 产品培训模块:Data Converter Fundamentals DAC Architectures 标准包装:750 系列:- 设置时间:7µs 位数:16 数据接口:并联 转换器数目:1 电压电源:双 ± 功率耗散（最大）:100mW 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-LCC（J 形引线） 供应商设备封装:28-PLCC（11.51x11.51） 包装:带卷 (TR) 输出数目和类型:1 电压，单极；1 电压，双极 采样率（每秒）:143k |
| DAC8408FPC | 功能描述:IC DAC 8BIT QUAD W/MEMORY 28PLCC RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 产品培训模块:Data Converter Fundamentals DAC Architectures 标准包装:750 系列:- 设置时间:7µs 位数:16 数据接口:并联 转换器数目:1 电压电源:双 ± 功率耗散（最大）:100mW 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-LCC（J 形引线） 供应商设备封装:28-PLCC（11.51x11.51） 包装:带卷 (TR) 输出数目和类型:1 电压，单极；1 电压，双极 采样率（每秒）:143k |
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