参数资料
| 型号： | AMP02FSZ-RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | IC AMP INST PREC LDRIFT 16SOIC |
| 标准包装： | 1,000 |
| 放大器类型： | 仪表 |
| 电路数： | 1 |
| 转换速率： | 6 V/µs |
| -3db带宽： | 1.2MHz |
| 电流 - 输入偏压： | 4nA |
| 电压 - 输入偏移： | 40µV |
| 电流 - 电源： | 5mA |
| 电流 - 输出 / 通道： | 32mA |
| 电压 - 电源，单路/双路(±)： | ±4.5 V ~ 18 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 带卷 (TR) |
REV. E
–10–
AMP02
Overvoltage Protection
Instrumentation amplifiers invariably sit at the front end of
instrumentation systems where there is a high probability of
exposure to overloads. Voltage transients, failure of a transducer,
or removal of the amplifier power supply while the signal source is
connected may destroy or degrade the performance of an unpro-
tected device. A common technique is to place limiting resistors in
series with each input, but this adds noise. The AMP02 includes
internal protection circuitry that limits the input current to
±4 mA
for a 60 V differential overload (see Figure 5) with power off,
±2.5 mA with power on.
DIFFERENTIAL INPUT VOLTAGE
4
–100
LEAKA
GE
CURRENT
–
mA
3
1
–1
–3
–4
2
0
–2
–80
–60
–40
–20
0
20
40
60
80
100
POWER ON
POWER OFF
TA = 25 C
VS = 15V
Figure 5. AMP02’s Input Protection Circuitry Limits Input
Current During Overvoltage Conditions
Power Supply Considerations
Achieving the rated performance of precision amplifiers in a
practical circuit requires careful attention to external influences.
For example, supply noise and changes in the nominal voltage
directly affect the input offset voltage. A PSR of 80 dB means
that a change of 100 mV on the supply (not an uncommon
value) will produce a 10
V input offset change. Consequently,
care should be taken in choosing a power unit that has a low
output noise level, good line and load regulation, and good
temperature stability. In addition, each power supply should be
properly bypassed.
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