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The Keysight 33502A is a dual-channel isolated amplifier designed to extend the output capability of function and arbitrary waveform generators. It provides a fixed non-inverting gain of 5x with up to ±25 Vpk (50 Vpp) output per channel, paired with a fully isolated analog front end that floats ±42 Vpk relative to earth ground. The 33502A is positioned as a companion instrument for function generators where higher voltage output and low distortion are both required from the same signal path.
Per the datasheet, the 33502A is compatible with existing Keysight function/arbitrary waveform generators including the 33120A, 33210A, 33220A, and 33250A, and can also amplify signals from non-Keysight function and arbitrary waveform generators. The instrument is intended for applications where a generator's native output range is insufficient for the device under test, and where signal fidelity through the amplification stage matters — for example, when driving loads that require higher voltage swing while preserving the waveform integrity of the source generator.
Keysight Technologies was formed in 2014 as a spin-off from Agilent Technologies, which itself was spun off from Hewlett-Packard's test and measurement business in 1999. Instruments in the Keysight 335xx function generator and amplifier product family — including the 33502A — carry the engineering lineage of the HP and Agilent function/arbitrary waveform generator product lines that preceded them.
| Feature | Characteristics |
|---|---|
| General | |
| Number of channels | 2 |
| Channel to channel ground connection | Not connected in BYPASS ON. Connected with both channels OFF or in Gain of 5x |
| Floating Voltage | ± 42 Vpk to earth |
| Input Coupling | |
| AC coupling | Programmable |
| DC coupling | Default, programmable |
| Input Impedance | |
| 1 MΩ | Default, programmable |
| 50 Ω | Programmable |
| Input voltage range | |
| Maximum voltage range | ± 5 Vpk for gain of 5x, ± 30 Vpk for bypass |
| Damage level | ± 10 Vpk for 50 Ω input; ± 35 Vpk for 1 MΩ input |
| Input path | Programmable gain of 5x, bypass (1x), or off state |
| Input gain 5x | 5x, Fixed, Non-inverting |
| Gain accuracy | ± 0.1% @ 1 kHz |
| Flatness DC coupling | 0.1%: dc - 10 kHz; 1%: dc - 40 kHz; 5%: dc - 100 kHz |
| Flatness AC coupling | 0.1%: 30 Hz - 10 kHz; 1%: 10 Hz - 40 kHz; 5%: 3 Hz - 100 kHz |
| Small signal bandwidth | > 300 kHz (–3 dB) |
| Full power bandwidth | 100 kHz @ 50 Vpp output |
| Input bypass | |
| Bandwidth for 50 Ω system | > 300 MHz (–3 dB) |
| Maximum current | 0.2 Apk |
| Noise | |
| Input referred noise | < 40 nV/rt-Hz @ 1 kHz |
| Output configuration and specification | |
| Output current | 200 mA (150 mA for continuous output from -8 V to +8 V) |
| DC output resistance | < 2 Ω |
| Max output level | ± 25 Vpk |
| Output DC offset | < 10 mV |
| Output slew rate | > 20 V/µs |
| THD + N | < 0.01% @ 10 kHz, 40 Vpp |
| Aberrations | < 5% for waveforms with < 3 V input step or non slewing output |
| Transition time (Final value ± 1% of step size) | 2.5 µSec + 50 nSec/volt of output step |
| Channel to channel isolation for gains of 5x | > 75 dB |
| Capacitive Load for no oscillation | < 1 nF |
| Output protection | Continuous short circuit protection. Thermal overload shutdown. Over temperature status flag. |
| General characteristics | |
| Power supply | 100 V / 120 V / 220 V / 240 V ± 10% |
| Power line frequency | 50–60 Hz ± 10%; 400 Hz ± 10% |
| Power consumption | 100 VA peak (typical value depends on configuration and load) |
| Operating environment | Full accuracy for 0 to 55 °C; Full accuracy to 80% R.H. at 40 °C Non-condensing |
| Storage temperature | –40 to 70 °C |
| Operating altitude | Up to 3000 m |
| Bench Dimensions (W x H x D) | 261.2 mm x 103.8 mm x 303.2 mm |
| Weight | 3.1 kg (6.8 lbs) |
| Acoustic noise | Normal operating mode: SPL 35 dB(A) |
| Display | 4.3" Color TFT WQVGA (480 x 272), LED backlight |
| Remote interfaces | 10/100 Mbit LAN, USB 2.0 Standard |
| Language | SCPI – 1994.0, IEEE–488.2 |
| LXI compliance | LXI Class C, Version 1.0 |
Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.
Model No
Keysight
Condition
Used
Manufacturer
Keysight
30+ Years in Business
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