参数资料
型号: OP497FPZ
厂商: Analog Devices Inc
文件页数: 4/16页
文件大小: 0K
描述: IC OPAMP GP 500KHZ QUAD 14DIP
标准包装: 25
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: 通孔
封装/外壳: 14-DIP(0.300",7.62mm)
供应商设备封装: 14-PDIP
包装: 管件
产品目录页面: 773 (CN2011-ZH PDF)
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
In Figure 38, the CH must be of polystyrene, Teflon, or
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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OP497FPZ 制造商:Analog Devices 功能描述:IC QUAD OP-AMP
OP497FPZ1 制造商:AD 制造商全称:Analog Devices 功能描述:Precision Picoampere Input Current Quad Operational Amplifier
OP497FS 功能描述:IC OPAMP GP 500KHZ QUAD 16SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:Excalibur™ 放大器类型:J-FET 电路数:1 输出类型:- 转换速率:45 V/µs 增益带宽积:10MHz -3db带宽:- 电流 - 输入偏压:20pA 电压 - 输入偏移:490µV 电流 - 电源:1.7mA 电流 - 输出 / 通道:48mA 电压 - 电源,单路/双路(±):4.5 V ~ 38 V,±2.25 V ~ 19 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-SOIC 包装:带卷 (TR)
OP-497FS 制造商:AD 制造商全称:Analog Devices 功能描述:PRECISION PICOAMPERE INPUT CURRENT QUAD OPERATIONAL AMPLIFIER
OP497FS-REEL 功能描述:IC OPAMP GP 500KHZ QUAD 16SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:Excalibur™ 放大器类型:J-FET 电路数:1 输出类型:- 转换速率:45 V/µs 增益带宽积:10MHz -3db带宽:- 电流 - 输入偏压:20pA 电压 - 输入偏移:490µV 电流 - 电源:1.7mA 电流 - 输出 / 通道:48mA 电压 - 电源,单路/双路(±):4.5 V ~ 38 V,±2.25 V ~ 19 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-SOIC 包装:带卷 (TR)