Overview
The AD630JNZ, produced by Analog Devices Inc., is a high precision balanced modulator/demodulator. It combines a flexible commutating architecture with the accuracy and temperature stability afforded by laser wafer trimmed thin film resistors. This component is designed for precision signal processing and instrumentation applications that require wide dynamic range. It can be used in various configurations, including as a synchronous demodulator in a lock-in amplifier setup, allowing it to recover small signals from high levels of interfering noise.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Open-Loop Gain | 90 | 110 | 100 | dB |
| Closed-Loop Gain Error (±1, ±2) | 0.1 | 0.05 | 0.1 | % |
| Closed-Loop Gain Match | 0.1 | 0.05 | 0.1 | % |
| Closed-Loop Gain Drift | 2 | 2 | 2 | ppm/°C |
| Input Offset Voltage | 100 | 500 | 1000 | µV |
| Full Power Bandwidth | - | - | 350 | kHz |
| Slew Rate | - | - | 45 | V/µs |
| Supply Voltage | - | - | ±18 | V |
| Internal Power Dissipation | - | - | 600 | mW |
| Storage Temperature (Ceramic Package) | -65 | - | 150 | °C |
| Lead Temperature Range (Soldering, 10 sec) | - | - | 300 | °C |
Key Features
- Pin programmable, closed-loop gains of ±1 and ±2 with 0.05% accuracy and match.
- Low crosstalk: −120 dB at 1 kHz, −100 dB at 10 kHz.
- 100 µV channel offset voltage and high slew rate of 45 V/µs.
- 350 kHz full power bandwidth and 2 MHz channel bandwidth.
- Optional input bias current compensation resistors, common-mode and differential-offset voltage adjustment, and a channel status output.
- External feedback enables high gain or complex switched feedback topologies.
- Can recover a small signal from 100 dB of interfering noise when used as a synchronous demodulator in a lock-in amplifier configuration.
Applications
- Balanced modulation and demodulation.
- Synchronous detection.
- Phase detection and quadrature detection.
- Phase sensitive detection and lock-in amplification.
- Square wave multiplication.
- Precision signal processing and instrumentation applications requiring wide dynamic range.
Q & A
- What is the primary function of the AD630JNZ?
The AD630JNZ is a high precision balanced modulator/demodulator used in precision signal processing and instrumentation applications.
- What are the available closed-loop gains for the AD630JNZ?
The AD630JNZ offers pin programmable, closed-loop gains of ±1 and ±2 with 0.05% accuracy and match.
- What is the full power bandwidth of the AD630JNZ?
The full power bandwidth of the AD630JNZ is 350 kHz.
- How does the AD630JNZ handle high levels of noise?
The AD630JNZ can recover a small signal from 100 dB of interfering noise when used as a synchronous demodulator in a lock-in amplifier configuration.
- What is the slew rate of the AD630JNZ?
The slew rate of the AD630JNZ is 45 V/µs.
- What are some common applications of the AD630JNZ?
Common applications include balanced modulation and demodulation, synchronous detection, phase detection, quadrature detection, phase sensitive detection, lock-in amplification, and square wave multiplication.
- What is the maximum supply voltage for the AD630JNZ?
The maximum supply voltage for the AD630JNZ is ±18 V.
- How does the AD630JNZ minimize switching distortion?
The AD630JNZ minimizes switching distortion through the rapid response time of its comparator and the high slew rate and fast settling of its linear amplifiers.
- What is the channel bandwidth of the AD630JNZ?
The channel bandwidth of the AD630JNZ is 2 MHz.
- Can the AD630JNZ be used as a multiplexer?
Yes, the AD630JNZ can be used as a 2-channel multiplexer with gains of 1, 2, 3, or 4.
