參數(shù)資料
型號(hào)： IFPA301
廠商： InterFET Corporation
英文描述： Monolithic JFET Preamplifier
中文描述： 單片結(jié)型場(chǎng)效應(yīng)管放大器
文件頁數(shù)： 1/2頁
文件大小： 110K
代理商： IFPA301
IFPA300, IFPA301
Monolithic JFET Preamplifier
Description & Features
The IFPA300 series is an inverting transimpedance
amplifier featuring extremely low noise and a wide
gain-bandwidth suitable as a charge-sensitive pre-
amplifier for a broad range of applications.
The monolithic IFPA300 series contain 8 n-channel
epitaxial-channel diffused-gate JFETs to achieve
optimally low 1/f noise performance over a wide
temperature range (120K-300K).
DC open loop gain
GBW
ˉ
N
@ 10 Hz
85 dB
200 MHz
3.0 nV/
√
Hz
General Specifications
Power Dissipation at VDD = 12 V
Input Leakage Current (T = 300 K)
Input-Referred Noise Voltage (f = 10 kHz)
Input-Referred Noise Voltage (f = 10 Hz)
Output Range at VDD = 12 V
Designed to drive 50
load.
<100 mW
10 pA
0.6 nV/
√
Hz
3.0 nV/
√
Hz
4.0 V (5.0 V Max)
Charge Sensitive
Preamplifier Specifications
The IFPA300 Series is actually tailored to detector
capacitance in the 100 D 1000 pF range.
Input Open-Loop Capacitance
Rise Time (CD = 500 pF, Cf = 33 pF)
60 pF
20 ns
Equivalent Noise Charge
(Measured with semigaussian shaping, peaking
time = t
p
)
4200 e– rms at CD @ 500 pF, t
p
= 0.2 μm
3200 e– rms at CD @ 500 pF, t
p
= 1.0 μm
4200 e– rms at CD @ 500 pF, t
p
= 4.0 μm
Absolute maximum ratings at TA = 25°C
All pins (except Input) referenced to Bias 3
Input to Bias 3
Power Dissipation
Derating Factor
Operating Temperature
85 dB
V
225 mW
1.8 mW/°C
150°C
At this time, there are two units in this family.
The 300/301 Series gives more flexibility with respect
to output transistor drain.
The 310/311 Series ties the output transistor drain to
the V
DD
line.
Simplified Schematic Circuit
Packages & Test Circuit Overside
x
01/99
1000 N. Shiloh Road, Garland, TX 75042
(972) 487-1287
FAX
(972) 276-3375
J
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