参数资料
型号: DAC8408FS
厂商: Analog Devices Inc
文件页数: 4/16页
文件大小: 0K
描述: IC DAC 8BIT QUAD W/MEMORY 28SOIC
产品培训模块: Data Converter Fundamentals
DAC Architectures
标准包装: 27
设置时间: 190ns
位数: 8
数据接口: 并联
转换器数目: 4
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
供应商设备封装: 28-SOIC W
包装: 管件
输出数目和类型: 4 电流,单极;4 电流,双极
采样率(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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相关代理商/技术参数
参数描述
DAC8408FS-REEL 制造商:Analog Devices 功能描述:DAC 4-CH R-2R 8-bit 28-Pin SOIC W T/R 制造商:Analog Devices 功能描述:DAC8408 W/TAPE & REEL - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:DAC8408 W/TAPE & REEL - Tape and Reel
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DAC8408FSZ 制造商:Analog Devices 功能描述:IC 8-BIT DAC
DAC8408FSZ-REEL 功能描述:IC DAC 8BIT QUAD W/MEMORY 28SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:47 系列:- 设置时间:2µs 位数:14 数据接口:并联 转换器数目:1 电压电源:单电源 功率耗散(最大):55µW 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:28-SSOP(0.209",5.30mm 宽) 供应商设备封装:28-SSOP 包装:管件 输出数目和类型:1 电流,单极;1 电流,双极 采样率(每秒):*
DAC8408FT 制造商:Rochester Electronics LLC 功能描述:QUAD 8-BIT CMOS DAC WITH - Bulk