NI PXI-5690 is a 3 GHz RF preamplifier for PXI-based RF signal conditioning, identified by NI as a 2-channel module with one fixed-gain path and one programmable-gain path.
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Key product information and technical features.
NI PXI-5690 is an NI PXI RF preamplifier, not a data acquisition module. NI documentation identifies it as a 3 GHz RF preamplifier, and the NI driver readme separately lists the PXI-5690 preamplifier from the PXI-5691 amplifier and PXI-5695 attenuator. This distinction is important when matching the module to RF signal-conditioning applications and software support. https://www.ni.com/docs/en-US/bundle/pxi-5690-getting-started/page/support.html https://www.ni.com/pdf/manuals/375126d.html
The standalone PXI-5690 specifications define a frequency range of 100 kHz to 3.0 GHz across 2 channels. Channel 0 is a fixed-gain path, while Channel 1 is a programmable-gain path. NI states that published specifications are valid after a 15-minute warm-up at 25 °C ambient with the calibration cycle maintained, and the recommended calibration interval is 1 year. https://www.ni.com/docs/en-US/bundle/pxi-5690-specs/page/specs.html
RF connectivity is provided through four SMA female 50 ohm ports: CH 0 IN, CH 0 OUT, CH 1 IN, and CH 1 OUT. NI specifies AC coupling on CH 0 IN and the CH 1 main input path. For performance, Channel 0 has gain calibration accuracy of ±0.4 dB, maximum output power of +20 dBm, typical output 1 dB compression of +18 dBm, and survival input power of -10 dBm maximum. Channel 1 main path also has ±0.4 dB gain calibration accuracy, +20 dBm maximum output power, typical output 1 dB compression of +16 dBm, and +20 dBm maximum survival input power with attenuation. https://www.ni.com/docs/en-US/bundle/pxi-5690-specs/page/specs.html
Verified product specifications.
| Frequency range | 100 kHz to 3.0 GHz |
|---|---|
| Number of channels | 2 |
| Channel 0 type | Fixed gain |
| Channel 1 type | Programmable gain |
| Warm-up time for published specs | 15 min |
| Specified ambient temperature | 25 °C |
| Calibration interval | 1 year |
| CH 0 gain calibration accuracy | ±0.4 dB |
| CH 0 maximum output power | +20 dBm |
| CH 0 output 1 dB compression | +18 typical dBm |
| CH 0 survival input power | -10 maximum dBm |
| CH 1 main-path gain calibration accuracy | ±0.4 dB |
| CH 1 maximum output power | +20 dBm |
| CH 1 output 1 dB compression | +16 typical dBm |
| CH 1 survival input power | +20 maximum (with attenuation) dBm |
| RF connector type | SMA female |
| RF impedance | 50 Ω |
| +3.3 V current | 150 max / 110 typical mA |
| +12 V current | 350 max / 300 typical mA |
| -12 V current | 10 max / 3 typical mA |
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Manufacturer
Platform
RF preamplifier
PXI
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Product-specific answers based on available technical information.
NI identifies the PXI-5690 as a PXI RF preamplifier, and the documentation portal describes it as a 3 GHz RF preamplifier.
The NI PXI-5690 has a specified frequency range of 100 kHz to 3.0 GHz.
The PXI-5690 provides 2 channels: CH 0 fixed gain and CH 1 programmable gain.
NI states that the NI-5690 Driver Software supports this PXI RF signal-conditioning hardware.
Yes. NI specifies SMA female connectors and 50 ohm impedance for CH 0 IN, CH 0 OUT, CH 1 IN, and CH 1 OUT.