Lspec 4701 Weak Current Preamplifier

• Customization: Available
• After-sales Service: 24 Months
• Warranty: 24 Months
• Model NO.: LSPEC 4701
• High Gain: + Gain ±1PA/V~±1mA/V Adjustable
• Transport Package: Carton
• Specification: 204.4*88.4*325.6
• Trademark: CHHGC
• Origin: China
• Production Capacity: 5000 Pieces/Year

Product Description

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