Features High-Performance Amplification: Delivers exceptional accuracy and linearity using the AD620 operational amplifier, offering improved performance over general-purpose amplifiers. Adjustable Gain: Features a potentiometer for precise gain adjustment, supporting configurable amplification from 1.5x to 1000x. Null Offset Adjustment: Includes a dedicated potentiometer to fine-tune the zero-reference point, enhancing measurement stability and minimizing offset drift. Negative Voltage Output: Integrated ICL7660A charge-pump IC provides a negative output voltage (–VIN) for dual-supply applications. Compact Design: Small PCB footprint (32 × 22 mm) with four 4 mm mounting holes and standard 2.54 mm pin spacing. Supports output voltage range up to ±10 V. Specifications Item Type: Millivolt Voltage Amplifier Input Voltage: 3–12 VDC Gain Range: Adjustable from 1.5x to 1000x Input Signal Range: 100 µV to 300 mV Output Voltage Range: ±(VIN – 2 V) Negative Output Voltage: Approximately –VIN (load-dependent) Input Offset Voltage: 50 mV Input Bias Current: ≤1.0 nA Common-Mode Rejection Ratio (CMRR): 100 dB Offset Voltage Drift: ≤0.6 µV/°C Settling Time: ≤2 mV per month (maximum drift under stable conditions) Dimensions: Approx. 32 × 22 mm (1.3 × 0.9 in) Package Includes 1 × Millivolt Voltage Amplifier Note This module is intended for users with foundational electronics knowledge. Technical support is available.