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参数资料
| 型号： | REF03GSZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 8/12页 |
| 文件大小： | 0K |
| 描述： | IC VREF SERIES PREC 2.5V 8-SOIC |
| 产品变化通告： | Input Voltage Max Change 23/Mar/2009 |
| 标准包装： | 98 |
| 基准类型： | 串联，精度 |
| 输出电压： | 2.5V |
| 容差： | ±0.6% |
| 温度系数： | 50ppm/°C |
| 输入电压： | 4.5 V ~ 33 V |
| 通道数： | 1 |
| 电流 - 静态： | 1.4mA |
| 电流 - 输出： | 10mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 管件 |
| 产品目录页面： | 797 (CN2011-ZH PDF) |
REF03
BOOST TRANSISTOR PROVIDES HIGH
OUTPUT CURRENT
When applications require more than 10 mA current delivery,
an external boost transistor may be added to the REF03 to pass
the required current without dissipating excessive power within
the IC. The maximum current output to the system is bounded
only by the capabilities of the boost transistor. Figure 19 shows
this technique, with and without current limiting.
CMOS DAC REFERENCE
The REF03 makes an excellent reference for use with CMOS
and bipolar DACs. Figure 20 shows the REF03 connected to
the AD7393 , a 12-bit CMOS DAC. An AD8603 with a common
mode input range that extends to its positive rail can be a good
combination with only 50 μA of maximum current consumption.
+5V
Current limiting may be used to prevent damage to the boost
transistor. Figure 19A is an example of no current limit, while
Figure 19B shows the limit that occurs when the voltage dropped
across R2 exceeds one V BE (0.6 V). The current limit is sensitive
2
V IN
REF03
V OUT
GND
6
470k ?
470k ?
to the variations of the forward drop of the diodes and the
PNP’s V BE with temperature, and also decreases with increasing
temperature.
4
V DD
V REF
AD7393
V OUT
AD8603
V OUT
2.5V TO –2.5V
V+
V–
GND
–2.5V
65 ?
1N4148
R1
40 ?
R2
10 ?
Figure 20. CMOS DAC Reference
2
V IN
2N2905
2
V IN
2N2905
REF03
V OUT
GND
4
6
–2.5V
2.49k ?
REF03
V OUT
GND
4
6
2.49k ?
–2.5V
0mA TO 100mA
A. NO CURRENT LIMIT
B. CURRENT LIMITING
Figure 19. Output Current Boost
Rev. G | Page 8 of 12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| REF03GSZ-REEL | 功能描述:IC VREF SERIES PREC 2.5V 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 标准包装:3,000 系列:- 基准类型:旁路，精度 输出电压:5V 容差:±0.5% 温度系数:100ppm/°C 输入电压:- 通道数:1 电流 - 阴极:80µA 电流 - 静态:- 电流 - 输出:15mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:TO-236-3，SC-59，SOT-23-3 供应商设备封装:SOT-23-3 包装:带卷 (TR) 其它名称:LM4040CIM3-5.0MLTRLM4040CIM3-5.0MLTR-ND |
| REF03GSZ-REEL7 | 功能描述:IC VREF SERIES PREC 2.5V 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 产品培训模块:Voltage Reference Basics 标准包装:100 系列:- 基准类型:旁路，精度 输出电压:4.096V 容差:±0.075% 温度系数:50ppm/°C 输入电压:- 通道数:1 电流 - 阴极:1µA 电流 - 静态:- 电流 - 输出:10mA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOIC 包装:管件 |
| REF03P | 制造商:未知厂家 制造商全称:未知厂家 功能描述:+2.5V Precision Voltage Reference(282.09 k) |
| REF03S | 制造商:未知厂家 制造商全称:未知厂家 功能描述:+2.5V Precision Voltage Reference(282.09 k) |
| REF-04 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:TERMINAL MOUNTING KIT |
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