PRODUCT INTRODUCTION
The LSPEC 4701 Weak Current amplifier is a
high-performance desktop low noise preamplifier
that uses a novel circuit topology and precision
electronics to amplify very weak current signals.
Amplifier sensitivity can be adjusted, bias voltage and
input bias current can be adjusted independently,
built-in signal filter can be set, support signal reverse
and blanking, strong anti-interference ability, can be
widely used in weak current signal detection field.
Application areas
It can be widely used in research, education, medical, photoelectric detection, electromagnetic
detection and other fields involving weak current signal detection.
PRODUCT FEATURES
Low noise
+ New low noise amplifier circuit topology and
precision components, amplifier has the world's
first-class noise level, self-noise ≤ 5fA;
High bandwidth
+ Adopt new bandwidth compensation circuit,
amplifier bandwidth DC~1MHz;
High gain
+ gain ±1pA/V~±1mA/V adjustable;
customize
+ can be customized amplifier gain, bandwidth and
other parameters according to user needs and use
occasions;
Nationally produced
+100% domestic, the circuit has a good general type
and integration, convenient function expansion and
maintenance;
PRODUCT PARAMETER
Input
Output
Input
AC or DC, single ended or
differential
Output
accuracy
±(0.5%× output voltage +10Mv)@25ºC
Bias
voltage
±5V adjustable
Maximum
output
±5V(high impedance load)
Bias current
±1pA~±1mA adjustable
Other
Maximum
input
±5mA
External sector
control
TTL signal input is blanked
Noise
Minimum 5fA/Hz0.5(see table
below for details)
Interface
RS232,9600baud
Sensitivity
1pA/V~±1mA/V step 0.5%
adjustable
Power supply
220VAC 50Hz Built-in 18650 battery pack
Frequency
response
±0.5dB DC~1MHz
Size
204.4mm×88.4mm×325.6mm(Maximum size)
Weight
4.7kg(Battery containing)
Filter
Signal Filters 2 configurable 6dB/oct roll-down filters Cut-off frequency: 0.03~1.2MHz(1-3-10 sequence)
high-pass, low-pass, band-pass
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