The Keysight (Agilent) 33502A Isolated Amplifier is a two-channel high-voltage output instrument that amplifies signals while providing electrical isolation from earth. Designed as a companion to function generators, it delivers outputs up to 50 Vpp with low distortion for precision measurement applications. Each channel operates independently with selectable input coupling (AC/DC) and input impedance (50 Ω or 1 MΩ), enabling compatibility across diverse circuit configurations. The amplified and direct (bypass) signal paths are software-switchable without requiring cable reconfiguration.
Technical Specifications
• Output voltage range: ±25 V (50 Vpp maximum)
• Full-power bandwidth: 100 kHz @ 50 Vpp
• Small-signal bandwidth: >300 kHz
• Total harmonic distortion + noise: <0.01% @ 10 kHz and 40 Vpp
• Slew rate: 20 V/µs minimum
• Output drive: 200 mA maximum
• Input-referred noise: <40 nV/√Hz @ 1 kHz
• Differential input impedance: 10 MΩ / 2 pF
• Isolation: Floats ±42 Vpk to earth
• Maximum input voltage: ±5 Vpk (5x gain); ±30 Vpk (bypass mode)
• Damage threshold: ±10 Vpk @ 50 Ω input
• Capacitive load stability: <1 nF for oscillation-free operation
• Operating temperature: 0 to 55 °C
• Acoustic noise: 35 dB(A) SPL (normal mode)
– Key Features
• Dual-channel independent channel-to-channel ground control
• Programmable input coupling and impedance selection
• Continuous short-circuit protection and thermal overload shutdown
• Over-temperature status flag
• Compact half-rack form factor: 261.2 mm (W) × 103.8 mm (H) × 303.2 mm (D)
• LXI Class-C compliance with LAN, USB 2.0, and SCPI remote interfaces
• 4.3" color TFT WQVGA display with softkey control
• Multi-voltage power supply: 100/120/220/240 V ±10% (50–60 Hz ±10%, 400 Hz ±10%)
– Typical Applications
High-voltage signal amplification for sensitive test environments requiring galvanic isolation and low-distortion outputs. Ideal for audio testing, component characterization, and measurement systems demanding extended dynamic range.
– Compatibility & Integration
Natively integrates with Keysight function/arbitrary waveform generators (33120A, 33210A, 33220A, 33250A). Front-panel and rear-panel output connectors support legacy and modern test setups. Compatible with third-party function and arbitrary waveform generators.
