Model 3000 amplifier – A-M Systems

The Model 3000 Amplifier is a single-channel AC/DC differential amplifier designed for low-noise recordings on excitable tissue with low-impedance electrodes (< 1.5 MΩ).

Description of the A-M Systems Model 3000 amplifier

It can be used in AC or DC mode, with amplification from 50× to 10,000×, adjustable filtering and compatibility with optional sampling heads for high-impedance microelectrodes.

Features of the A-M Systems Model 3000 amplifier

Low noise: 1.8 µV p-p (10 Hz-10 kHz), 0.1 fA/√Hz at 1 kHz
Input impedance: >10¹⁵ Ω ‖ 1 pF
Variable gain: ×50, ×100, ×500, ×1,000, ×5,000, ×10,000
Operating modes: Record, Stimulate, Impedance test
Filters: high-pass (DC to 300 Hz), low-pass (100 Hz to 20 kHz), notch (-50 dB to 60 Hz)
Capacitance compensation: -4 to 50 pF
Current tracking during stimulation (gain 5 V/mA to 1 V/µA)
Common mode rejection: 90 dB
Power supply: Faraday-compatible external power supply (100-240 VAC)
Warranty: 3 years, supplied with cable, power supply

Technical characteristics of the A-M Systems Model 3000 amplifier

Caractéristique	Valeur
Noise (10 Hz-10 kHz)	1.8 µV p-p
Current noise (1 kHz)	0.1 fA/√Hz
Input impedance	>10¹⁵ Ω ‖ 1 pF
Gain	50, 100, 500, 1 000, 5 000, 10 000×
High-pass filter	DC, 0.1, 1, 10, 100, 300 Hz
Low-pass filter	100, 300, 1,000, 3,000, 10,000, 20,000 Hz
Notch filter	-50 dB at 60 Hz
Capacity compensation	-4 to 50 pF
Common mode rejection	90 dB
Operating procedures	Record / Stim / Impedance test
Stimulation gain	5 V/mA → 1 V/µA
Impedance measurement	0.1 Vp-p/MΩ → 20 Vp-p/MΩ
DC offset	± 250 mV with coarse and fine adjustment
Max. output voltage	± 10 V
Dimensions (W×H×D)	21.6 × 10.2 × 8.9 cm
Weight	~2.3 kg (5 lb)
External power supply	100-240 VAC, 50/60 Hz
Accessories included	0.9 m DB15 cable, power supply, rack kit, manual
Guarantee	3 years