参数资料
| 型号： | OP497FSZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 4/16页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP GP 500KHZ QUAD 16SOIC |
| 标准包装： | 1,000 |
| 放大器类型： | 通用 |
| 电路数： | 4 |
| 转换速率： | 0.15 V/µs |
| 增益带宽积： | 500kHz |
| 电流 - 输入偏压： | 40pA |
| 电压 - 输入偏移： | 40µV |
| 电流 - 电源： | 525µA |
| 电流 - 输出 / 通道： | 25mA |
| 电压 - 电源，单路/双路(±)： | ±2 V ~ 20 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) |
OP497
Rev. E | Page 12 of 16
APPLICATIONS CIRCUIT
PRECISION ABSOLUTE VALUE AMPLIFIER
The circuit in Figure 36 is a precision absolute value amplifier
with an input impedance of 30 MΩ. The high gain and low
TCVOS of the OP497 ensure accurate operation with microvolt
input signals. In this circuit, the input always appears as a common-
mode signal to the op amps. The CMR of the OP497 exceeds
120 dB, yielding an error of less than 2 ppm.
+15V
2
3
4
8
1
6
5
7
0V < VOUT < 10V
D1
1N4148
C1
30pF
D2
1N4148
1/4
OP497
1/4
OP497
–15V
VIN
R2
2k
C3
0.1F
R3
1k
R1
1k
C2
0.1F
00
30
9-
0
37
Figure 36. Precision Absolute Value Amplifier
PRECISION CURRENT PUMP
Maximum output current of the precision current pump shown
in Figure 37 is ±10 mA. Voltage compliance is ±10 V with ±15 V
supplies. Output impedance of the current transmitter exceeds
3 MΩ with linearity better than 16 bits.
2
3
1
7
8
5
6
4
–15V
+15V
–
+
VIN
1/4
OP497
1/4
OP497
IOUT ==
=
R5
VIN
100
VIN
10mA/V
R3
10k
R5
10k
R4
10k
R1
10k
R2
10k
IOUT
±10mA
0
03
09
-03
8
Figure 37. Precision Current Pump
PRECISION POSITIVE PEAK DETECTOR
polyethylene to minimize dielectric absorption and leakage.
The droop rate is determined by the size of CH and the bias
current of the OP497.
2
3
1
7
8
5
6
4
+15V
1N4148
2N930
RESET
1/4
OP497
1/4
OP497
+
–15V
VOUT
0.1F
CH
VIN
1k
1k
1k
1k
00
30
9-
0
39
Figure 38. Precision Positive Peak Detector
SIMPLE BRIDGE CONDITIONING AMPLIFIER
Figure 39 shows a simple bridge conditioning amplifier using
the OP497. The transfer function is
R
V
F
REF
OUT
Δ
+
=
Δ
The REF43 provides an accurate and stable reference voltage for
the bridge. To maintain the highest circuit accuracy, RF should
be 0.1% or better with a low temperature coefficient.
2
3
1
7
8
5
6
4
+5V
REF43
6
2
4
+5V
R
2.5V
R +
ΔR
VOUT = VREF
ΔR
R +
ΔRR
1/4
OP497
1/4
OP497
VREF
RF
VOUT
–5V
RF
()
00
30
9-
0
40
Figure 39. Simple Bridge Conditioning Amplifier Using the OP497
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相关代理商/技术参数 |
参数描述 |
|---|---|
| OP497FY | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Operational Amplifier |
| OP-497FY | 制造商:AD 制造商全称:Analog Devices 功能描述:PRECISION PICOAMPERE INPUT CURRENT QUAD OPERATIONAL AMPLIFIER |
| OP497GBZ | 制造商:Analog Devices 功能描述: |
| OP497GP | 制造商:Analog Devices 功能描述:OP AMP QUAD LOW BIAS DIP14 497 |
| OP-497GP | 制造商:AD 制造商全称:Analog Devices 功能描述:PRECISION PICOAMPERE INPUT CURRENT QUAD OPERATIONAL AMPLIFIER |
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