参数资料
| 型号： | OP90GSZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 3/13页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP GP PREC 8SOIC |
| 标准包装： | 2,500 |
| 放大器类型： | 通用 |
| 电路数： | 1 |
| 转换速率： | 0.012 V/µs |
| 电流 - 输入偏压： | 4nA |
| 电压 - 输入偏移： | 125µV |
| 电流 - 电源： | 14µA |
| 电流 - 输出 / 通道： | 5mA |
| 电压 - 电源，单路/双路(±)： | 1.6 V ~ 36 V，±0.8 V ~ 18 V |
| 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： | 带卷 (TR) |
OP90
–11–
Single-Supply Current Monitor
Current monitoring essentially consists of amplifying the voltage
drop across a resistor placed in a series with the current to be
measured. The difficulty is that only small voltage drops can be
tolerated and with low precision op amps this greatly limits the
overall resolution. The single supply current monitor of Figure 12
has a resolution of 10
A and is capable of monitoring 30 mA of
current. This range can be adjusted by changing the current
sense resistor R1. When measuring total system current, it may
be necessary to include the supply current of the current moni-
tor, which bypasses the current sense resistor, in the final result.
This current can be measured and calibrated (together with the
residual offset) by adjustment of the offset trim potentiometer,
R2. This produces a deliberate offset that is temperature
dependent. However, the supply current of the OP90 is also
proportional to temperature and the two effects tend to track.
Current in R4 and R5, which also bypasses R1, can be accounted
for by a gain trim.
R1
1
R4
9.9k
R2
100k
R3
100k
3
7
6
4
2
5
1
V+
R5
100
ITEST
VOUT = 100mV/mA (ITEST)
TO CIRCUIT
UNDER TEST
–
+
OP90
Figure 12. Single-Supply Current Monitor
REV. C
+
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相关代理商/技术参数 |
参数描述 |
|---|---|
| OP90GSZ-REEL7 | 功能描述:IC OPAMP GP PREC 8SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 产品培训模块:Differential Circuit Design Techniques for Communication Applications 标准包装:1 系列:- 放大器类型:RF/IF 差分 电路数:1 输出类型:差分 转换速率:9800 V/µs 增益带宽积:- -3db带宽:2.9GHz 电流 - 输入偏压:3µA 电压 - 输入偏移:- 电流 - 电源:40mA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-VQFN 裸露焊盘，CSP 供应商设备封装:16-LFCSP-VQ 包装:剪切带 (CT) 产品目录页面:551 (CN2011-ZH PDF) 其它名称:ADL5561ACPZ-R7CT |
| OP910 | 功能描述:光电二极管 Photodiode RoHS:否 制造商:Vishay Semiconductors 产品:Photodiodes 反向电压:10 V 最大暗电流:30 nA 峰值波长:565 nm 上升时间:3.1 us 下降时间:3 us 半强度角度:50 deg 封装 / 箱体:TO-5 |
| OP910W | 功能描述:光电二极管 Photodiode RoHS:否 制造商:Vishay Semiconductors 产品:Photodiodes 反向电压:10 V 最大暗电流:30 nA 峰值波长:565 nm 上升时间:3.1 us 下降时间:3 us 半强度角度:50 deg 封装 / 箱体:TO-5 |
| OP913SL | 功能描述:光电二极管 Photodiode RoHS:否 制造商:Vishay Semiconductors 产品:Photodiodes 反向电压:10 V 最大暗电流:30 nA 峰值波长:565 nm 上升时间:3.1 us 下降时间:3 us 半强度角度:50 deg 封装 / 箱体:TO-5 |
| OP913WSL | 功能描述:光电二极管 Photodiode RoHS:否 制造商:Vishay Semiconductors 产品:Photodiodes 反向电压:10 V 最大暗电流:30 nA 峰值波长:565 nm 上升时间:3.1 us 下降时间:3 us 半强度角度:50 deg 封装 / 箱体:TO-5 |
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