參數資料
| 型號： | OP90GSZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 3/13頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP GP PREC 8SOIC |
| 標準包裝： | 1 |
| 放大器類型： | 通用 |
| 電路數： | 1 |
| 轉換速率： | 0.012 V/µs |
| 電流 - 輸入偏壓： | 4nA |
| 電壓 - 輸入偏移： | 125µV |
| 電流 - 電源： | 14µA |
| 電流 - 輸出 / 通道： | 5mA |
| 電壓 - 電源，單路/雙路(±)： | 1.6 V ~ 36 V，±0.8 V ~ 18 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 8-SO |
| 包裝： | 標準包裝 |
| 產品目錄頁面： | 773 (CN2011-ZH PDF) |
| 其它名稱： | OP90GSZ-REEL7DKR |
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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相關代理商/技術參數 |
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| OP910 | 功能描述:光電二極管 Photodiode RoHS:否 制造商:Vishay Semiconductors 產品:Photodiodes 反向電壓:10 V 最大暗電流:30 nA 峰值波長:565 nm 上升時間:3.1 us 下降時間:3 us 半強度角度:50 deg 封裝 / 箱體:TO-5 |
| OP910W | 功能描述:光電二極管 Photodiode RoHS:否 制造商:Vishay Semiconductors 產品:Photodiodes 反向電壓:10 V 最大暗電流:30 nA 峰值波長:565 nm 上升時間:3.1 us 下降時間:3 us 半強度角度:50 deg 封裝 / 箱體:TO-5 |
| OP913SL | 功能描述:光電二極管 Photodiode RoHS:否 制造商:Vishay Semiconductors 產品:Photodiodes 反向電壓:10 V 最大暗電流:30 nA 峰值波長:565 nm 上升時間:3.1 us 下降時間:3 us 半強度角度:50 deg 封裝 / 箱體:TO-5 |
| OP913WSL | 功能描述:光電二極管 Photodiode RoHS:否 制造商:Vishay Semiconductors 產品:Photodiodes 反向電壓:10 V 最大暗電流:30 nA 峰值波長:565 nm 上升時間:3.1 us 下降時間:3 us 半強度角度:50 deg 封裝 / 箱體:TO-5 |
| OP915 | 功能描述:光電二極管 Photodiode RoHS:否 制造商:Vishay Semiconductors 產品:Photodiodes 反向電壓:10 V 最大暗電流:30 nA 峰值波長:565 nm 上升時間:3.1 us 下降時間:3 us 半強度角度:50 deg 封裝 / 箱體:TO-5 |
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