AD630 Lock-in Amplifier Module DPSD Phase Sensitive Detection Weak Signal Balanced Modulator

Description:
- AD630 is a high-precision balanced modulator/demodulator that adopts a flexible commutation structure and is provided with excellent accuracy and temperature stability by thin film resistors adjusted by laser wafers. It is used for signal balanced modulation and demodulation, synchronous detection, phase detection, orthogonal detection and phase sensitivity detection, lock-in amplification, and square wave multiplication. The on-chip resistor network provides precise closed-loop gains of ±1 and ±2, with an accuracy of 0.05%. These resistors can also be used to precisely configure the gain of the multiplexer: 1, 2, 3, or 4. Using external feedback to achieve high gain or complex switch feedback topologies.

- AD630 is used for precision signal processing and instrumentation applications that require a wide dynamic range. When AD630 is used as a synchronous demodulator with a lock-in amplifier configuration, it can recover small signals from 100dB interference noise. Although the circuit is optimized for operating frequencies up to 1kHz, it is also useful at frequencies up to several hundred kilohertz.

AD630 Chip Features:
- Can recover signals from 100dB noise.
- Channel bandwidth: 2MHz
- Pendulum rate: 45V/us
- Channel crosstalk: -120dB (1KHz), -100dB (10KHz)
- Pin programmable gain: ±1 or ±2
- Channel offset voltage of 100uV
- 350KHz full power bandwidth

Specification:
- Power supply: ±5V to ±15V
- Module input range: up to 13Vpp
- Input reference signal range: (-VS + 3) to (+VS - 1.5); if power supply of ±5V, the reference signal input range is -2V to 3.5V
- OUT1: up to 27Vpp (at ±15V power supply)
- OUT2: up to 10Vpp
- Gain: 2X (by default)
- Bandwidth: 800kHz (first level single gain bandwidth); 2MHz (secondary level single gain bandwidth); 10Hz (third level bandwidth) when the cutoff frequency of the low-pass filter is set to 10Hz; In practical applications, it is recommended to use below 100kHz.
- Module features: third level loop setting; The first level is equipped with a weak signal amplifier (optional), the second level is equipped with an AD630 lock-in amplifier, and the third level is equipped with a low-pass filter (depending on the actual application).
- Module functions: multiple functions including balanced modulation, balanced demodulation, lock-in amplifier, precision rectifier, etc.
- Input and output interface: SMA
- Operating temperature: -20℃ to 85℃
- Module size: 5.7 x 3.7 x 0.9cm
- Net weight: 17g
- Module application: synchronous detection, phase detection, square wave multiplication, lock-in amplifier

Package Included:
- 1 x Lock-in Amplifier Module