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参数资料
| 型号： | ADR441ARMZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 15/20页 |
| 文件大小： | 0K |
| 描述： | IC VREF SERIES PREC 2.5V 8-MSOP |
| 设计资源： | Fully Isolated Input Module Based on AD7793 and ADuM5401(CN0066) Fully Isolated Input Module Based on AD7793, ADuM5401, and a High Performance In-Amp (CN0067) |
| 标准包装： | 1,000 |
| 系列： | XFET® |
| 基准类型： | 串联，精度 |
| 输出电压： | 2.5V |
| 容差： | ±0.12% |
| 温度系数： | 10ppm/°C |
| 输入电压： | 3 V ~ 18 V |
| 通道数： | 1 |
| 电流 - 静态： | 3.75mA |
| 电流 - 输出： | 10mA |
| 工作温度： | -40°C ~ 125°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-MSOP |
| 包装： | 带卷 (TR) |
ADR440/ADR441/ADR443/ADR444/ADR445
APPLICATIONS INFORMATION
OUTPUT ADJUSTMENT
The ADR44x family features a TRIM pin that allows the user to
adjust the output voltage of the part over a limited range. This
allows errors from the reference and overall system errors to be
+V DD
2
V IN
ADR440/
R2
trimmed out by connecting a potentiometer between the output
and the ground, with the wiper connected to the TRIM pin.
adjustment of the output and is not always required. R P should
be sufficiently large so that the maximum output current from
the ADR44x is not exceeded.
0.1μF
ADR441/
ADR443/
ADR444/
ADR445
V OUT 6
GND
4
0.1μF
R1
10k ? 10k ?
+10V
+5V
0.1μF
2
V IN
R3
5k ?
–10V
–5V
V OUT 6
ADR440/
ADR441/
ADR443/
ADR444/
0.1μF
V O = ±0.5%
Figure 36. ADR44x Bipolar Outputs
PROGRAMMABLE VOLTAGE SOURCE
To obtain different voltages than those offered by the ADR44x,
ADR445
TRIM 5
GND
4
R1
100k ?
R P
10k ?
R2
1k ?
some extra components are needed. In Figure 37, two potenti-
ometers are used to set the desired voltage and the buffering
amplifier provides current drive. The potentiometer connected
between V OUT and GND, with its wiper connected to the
Figure 35. ADR44x Trim Function
Using the trim function has a negligible effect on the temperature
performance of the ADR44x. However, all resistors need to be
low temperature coefficient resistors, or errors may occur.
BIPOLAR OUTPUTS
By connecting the output of the ADR44x to the inverting ter-
minal of an operational amplifier, it is possible to obtain both
positive and negative reference voltages. Care must be taken
noninverting input of the operational amplifier, takes care of
coarse trim. The second potentiometer, with its wiper connected
to the trim terminal of the ADR44x, is used for fine adjustment.
Resolution depends on the end-to-end resistance value and the
resolution of the selected potentiometer.
+V DD
2
V IN
ADR440/
when choosing Resistors R1 and R2 (see Figure 36). These
resistors must be matched as closely as possible to ensure mini-
mal differences between the negative and positive outputs. In
addition, care must be taken to ensure performance over
temperature. Use low temperature coefficient resistors if the
circuit is used over temperature; otherwise, differences exist
ADR441/
ADR443/
ADR444/
ADR445
V OUT 6
GND
4
R1 R2
10k ? 10k ?
ADJ V REF
between the two outputs.
Figure 37. Programmable Voltage Source
For a completely programmable solution, replace the two
potentiometers in Figure 37 with one Analog Devices dual
digital potentiometer, offered with either an SPI or an I 2 C
interface. These interfaces set the position of the wiper on both
lists compatible Analog Devices digital potentiometers.
Rev. E | Page 15 of 20
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADR441ARZ | 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:XFET® 标准包装:3,000 系列:- 基准类型:旁路，精度 输出电压:3V 容差:±0.5% 温度系数:100ppm/°C 输入电压:- 通道数:1 电流 - 阴极:82µA 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:6-TSSOP（5 引线），SC-88A，SOT-353 供应商设备封装:SC-70-5 包装:带卷 (TR) 其它名称:296-20888-2 |
| ADR441ARZ-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:XFET® 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 |
| ADR441B | 制造商:AD 制造商全称:Analog Devices 功能描述:Ultralow Noise, LDO XFET Voltage References with Current Sink and Source |
| ADR441BR | 制造商:Analog Devices 功能描述:V-REF PRECISION 2.5V 10MA 8SOIC N - Bulk |
| ADR441BRZ | 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:XFET® 标准包装:3,000 系列:- 基准类型:旁路，精度 输出电压:3V 容差:±0.5% 温度系数:100ppm/°C 输入电压:- 通道数:1 电流 - 阴极:82µA 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:6-TSSOP（5 引线），SC-88A，SOT-353 供应商设备封装:SC-70-5 包装:带卷 (TR) 其它名称:296-20888-2 |
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