参数资料
| 型号： | DAC312FR |
| 厂商： | Analog Devices Inc |
| 文件页数： | 5/14页 |
| 文件大小： | 0K |
| 描述： | IC DAC 12BIT MULT HS 20-CDIP |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 18 |
| 设置时间： | 250ns |
| 位数： | 12 |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 电压电源： | 双 ± |
| 功率耗散（最大）： | 375mW |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 20-CDIP（0.300"，7.62mm） |
| 供应商设备封装： | 20-CDIP |
| 包装： | 管件 |
| 输出数目和类型： | 2 电流，单极；2 电流，双极 |
| 采样率（每秒）： | * |
DAC312
–13–
REV. C
DESCRIPTION OF OPERATION
The DAC312 is divided into two major sections, an 8 segment
generator and a 9-bit master/slave D/A converter. In operation
the device performs as follows (see Simplified Schematic).
The three most significant bits (MSBs) are inputs to a 3-to-8
line decoder. The selected resistor (R5 in the figure) is con-
nected to the master/slave 9-bit D/A converter. All lower order
resistors (R1 through R4) are summed into the IO line, while all
higher order resistors (R6 through R8) are summed into the IO
line. The R5 current supplies 512 steps of current (0 mA to
0.499 mA for a 1 mA reference current) which are also summed
into the IO or IO lines depending on the bits selected. In the fig-
ure, the code selected is: 100 110000000. Therefore, 2 mA (4
×
0.5 mA/segment) +0.375 mA (from master/slave D/A converter)
are summed into IO giving an IO of 2.375 mA. IO has a current
of 1.625 mA with this code. As the three MSB’s are increment-
ed, each successively higher code adds 0.5 mA to IO and sub-
tracts 0.5 mA from IO, with the selected resistor feeding its
current to the master/slave D/A converter; thus each increment
of the 3 MSBs allows the current in the 9-bit D/A converter to
be added to a pedestal consisting of the sum of all lower order
currents from the segment generator. This configuration guar-
antees monotonicity.
Expanded Transfer Characteristic Segment (001 010 011)
Simplified Schematic
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DAC312GBC | 制造商:未知厂家 制造商全称:未知厂家 功能描述:12-Bit Digital-to-Analog Converter |
| DAC312HP | 功能描述:IC DAC 12BIT MULTIPLY HS 20-DIP RoHS:否 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）:* |
| DAC312HPZ | 功能描述:IC DAC 12BIT HS MULT 20-DIP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 设置时间:4µs 位数:12 数据接口:串行 转换器数目:2 电压电源:单电源 功率耗散（最大）:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-uMAX 包装:管件 输出数目和类型:2 电压，单极 采样率（每秒）:* 产品目录页面:1398 (CN2011-ZH PDF) |
| DAC312HR | 制造商:PMI 功能描述: |
| DAC312HS | 功能描述:IC DAC 12BIT MULTIPLY HS 20-SOIC RoHS:否 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）:* |
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