参数资料
型号: ICL7621DCPA
厂商: Maxim Integrated Products
文件页数: 17/26页
文件大小: 0K
描述: IC OPAMP DUAL LP CMOS 8-DIP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 50
放大器类型: 通用
电路数: 2
输出类型: 满摆幅
转换速率: 0.16 V/µs
增益带宽积: 480kHz
电流 - 输入偏压: 1pA
电压 - 输入偏移: 15000µV
电流 - 电源: 100µA
电压 - 电源,单路/双路(±): 2 V ~ 16 V,±1 V ~ 8 V
工作温度: 0°C ~ 70°C
安装类型: 通孔
封装/外壳: 8-DIP(0.300",7.62mm)
供应商设备封装: 8-PDIP
包装: 管件
ICL761X–ICL764X
Single/Dual/Triple/Quad
Operational Amplifiers
24
______________________________________________________________________________________
Figure 9. Low Droop Rate Sample and Hold—S2 improves
accuracy and acquisition time by including the voltage drop
across S1 inside the feedback loop. R1 closes the feedback
loop of A1 during the hold phase. The droop rate is [IBIAS(AZ)
+ ILEAK(S1) + ILEAK(S2)]/CHOLD.
ICL7622
A1
IH5141
12
ICL7622
A2
12
S/H
CONTROL
INPUT
VIN
VOUT
CHOLD
100k
R1
S1
S2
Figure 10. Long-Time Constant Integrator—With RIN = 1011,
the time constant of this integrator is 100,000s. Since the input
voltage is converted to a current by RIN, the input voltage can
far exceed the power-supply range.
-
+
CINT
RIN
VIN
VOUT
1
F
Figure 11. Pico Ammeter—The response time of this curcuit is
RFB x CFB, where CFB is the stray capacitance between the
output and the inverting terminal of the amplifier.
Figure 12. 60Hz Twin “T“ Notch Filter—The low 1pA bias cur-
rent of the ICL7611 allows use of small 540pF and 270pF
capacitors, even with a notch frequency of 60Hz. The 60Hz
rejection is approximately 40dB.
+
-
CURRENT
SOURCE
CFB
RFB - 1011
VO = 100mV/pA
+
-
OUTPUT
VIN
ICL7611
10M
10M
270pF
540pF
5M
CINT
LONG TIME CONSTANT INTEGRATOR
(Detailed Circuit Diagram — Figure 10)
-
+
RIN
VOUT
VIN
Typical Operating Circuit
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ICL7621DCPE 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Single/Dual/Triple/Quad Operational Amplifiers