PXI RF Signal Conditioning NI PXI-5690, NI PXI-5691, NI PXI-5695 NEW! Key Amplifier Features ◾◾ Up to +24 dBm maximum output power ◾◾ Up to 30 dB gain ◾◾ 0.5 dB gain resolution ◾◾ Typical noise figure <5 dB ◾◾ Both fixed and programmable gain channels Key Attenuator Features ◾◾ Up to 60 dB total attenuation ◾◾ 0.5 dB attenuation resolution ◾◾ 1.2:1 typical voltage standing wave ratio (VSWR) ◾◾ Both fixed and programmable attenuator channels Operating System ◾◾ Windows 7/XP/2000/NT Recommended Software ◾◾ LabVIEW ◾◾ LabWindows™/CVI ◾◾ C/C++/.NET Driver Software (included) ◾◾ NI-5690 Overview PXI RF Amplifiers National Instruments PXI RF signal conditioning modules include low-noise/ PXI-5690 (2.5 GHz) PXI-5691 (2.5 GHz) PXI-5691 (6.6 GHz) 31 dB 28 dB 27 dB high-gain amplifiers and programmable attenuators. You can use these 3U PXI CH0 Gain modules to optimize the dynamic range of PXI RF vector signal generators and CH0 Noise Figure 5.5 dB 5 dB 4 dB analyzers. The NI PXI-5690 is a 100 kHz to 3 GHz, two-channel programmable CH0 P1dB +18 dBm +21 dBm +21 dBm amplifier and attenuator; the NI PXI-5691 is a 50 MHz to 8 GHz, two-channel CH0 IP3 (TOI) +23 dBm +33 dBm +33 dBm programmable amplifier; and the NI PXI-5695 is a 50 MHz to 8 GHz, two-channel CH0 Max Output Power +20 dBm +25 dBm +25 dBm programmable attenuator. CH1 Max Gain 16 dB 28 dB 21 dB CH1 Noise Figure 8 dB 5 dB 5 dB CH1 P1dB +16 dBm +21 dBm +21 dBm You can use PXI programmable amplifiers with both RF signal generators and CH1 IP3 (TOI) +15 dBm +33 dBm +33 dBm RF signal analyzers. When combined with RF vector signal generators, PXI RF CH1 Max Output Power +20 dBm +25 dBm +25 dBm amplifiers enable high-power signal generation. For example, the PXI-5691 offers Note: All values are typical results at either 2.5 or 6.6 GHz. up to 28 dB of gain and a 1 dB compression point of +21 dBm. Using this module, Table 1. PXI RF Programmable Amplifiers Comparison RF Signal Conditioning Applications you can extend the upper power range of your vector signal generator. When used with RF vector signal analyzers, the same programmable amplifiers can improve the noise floor of the measurement system. For example, with a typical noise figure of 5 dB at 2.5 GHz, the PXI-5691 programmable amplifier can be combined with the NI PXI-5663 RF vector signal analyzer to measure signals down to -163 dBm/Hz. With PXI programmable attenuators, you can improve the power accuracy of your RF signal generator in lower power ranges. With an external attenuator, you generate RF signals in the most accurate range of the signal generator and attenuate the signal to the desired output power. PXI-5690 RF Programmable Amplifier/Attenuator The PXI-5690 is a 100 kHz to 3 GHz, two-channel programmable amplifier and attenuator with one fixed gain path and one programmable gain/attenuation path. The combined paths offer up to 37 dB of total signal gain at 2.5 GHz when signal paths are cascaded. PXI RF Signal Conditioning CH 0 IN CH 0 OUT PXI-5695 RF Programmable Attenuator The PXI-5695 is a 50 MHz to 8 GHz, two-channel RF programmable attenuator Step Attenuator Main Path with one fixed attenuation path and one programmable attenuation path. The combined paths can provide up to 70 dB of total attenuation at 2.5 GHz CH 1 IN CH 1 OUT when cascaded. Direct Path Figure 1. PXI-5690 Block Diagram Fixed Attenuator CH 0 IN CH 0 OUT Main Path Direct Path Step Attenuator selectable paths. The main path consists of a step attenuator followed by a fixed CH 1 IN CH 1 OUT gain amplifier. The step attenuator is software programmable in 1 dB steps. In Figure 3. PXI-5695 Block Diagram Channel 0 functions as a fixed gain preamplifier with a typical gain of 30 dB across all frequencies. This channel offers a low noise figure and a flat frequency response. Channel 1 functions as a programmable preamplifier containing two user- software, you can configure channel 1 to provide up to 10 dB of attenuation or up to 22 dB of gain – depending on frequency range. The direct path gives you the option of bypassing the attenuator-amplifier circuitry. PXI-5691 RF Programmable Amplifier The PXI-5691 is a 50 MHz to 8 GHz, two-channel programmable amplifier with one fixed gain path and one programmable gain path. The combined paths can provide up to 55 dB of total signal gain at 2.5 GHz when the two channels are cascaded. Channel 0 functions as a fixed attenuator with more than 27.5 dB of attenuation across all frequencies. Channel 1 functions as a programmable attenuator with up to 42 dB of attenuation across all frequencies. You can control this attenuator programmatically in software with 0.5 dB resolution. Software You can programmatically control PXI-569x modules using NI-5690 programming software. This driver provides C-style and NI LabVIEW APIs to help you control CH 0 OUT CH 0 IN both gain and attenuation. A block diagram of a basic LabVIEW example to control the PXI-5691 amplifier is shown in Figure 4. Step Attenuator Main Path CH 1 IN Direct Path CH 1 OUT Figure 2. PXI-5691 Block Diagram Channel 0 functions as a fixed gain preamplifier with a typical gain of more than 26 dB across all frequencies. This channel offers a low noise figure and a Figure 4. You can control PXI RF signal conditioning modules with NI LabVIEW software. flat frequency response. Channel 1 functions as a programmable preamplifier containing two userselectable paths. The main path consists of fixed gain amplification preceded Ordering Information by a step attenuator that is adjustable by software in 0.5 dB nominal steps. The NI PXI-5690.....................................................................................779465-01 direct path gives you the option of bypassing the attenuator-amplifier circuitry. NI PXI-5691.....................................................................................781035-01 NI PXI-5695.....................................................................................781036-01 BUY NOW For complete product specifications, pricing, and accessory information, call 800 813 3693 (U.S.) or go to ni.com/rf. BUY ONLINE at ni.com or C ALL 800 813 36 93 (U.S.) 2 PXI RF Signal Conditioning NI PXI-5690 Specifications 11 Channel 0 (CH 0) Main Path Specification Gain calibration accuracy...................... ±0.4 dB1 Gain variation by temperature............... Less than -0.03 dB/°C Maximum output power........................ +20 dBm Output 1 dB compression....................... +18 dBm typical Second harmonic at............................... +4 dBm, -40 dBc typical Survival input power.............................. -10 dBm maximum DC voltage at input................................ ±20 V maximum2 Noise Figure (dB) 10 9 8 7 6 5 4 Typical NF, CH 0 Maximum NF, CH 0 3 2 1 Under 500 kHz, ±1.5 dB. For all frequencies, degrades by ±0.03 dB/°C outside by 15 to 35 °C temperature range. 2 Nondamaging for steady-state DC only. Direct path passes input DC level to output. 1 0 400M 800M 1.2G 1.6G 2.0G Frequency (Hz) 2.4G 3.0G Figure 6. Noise Figure (NF) Channel 1 Performance, Main Path 26 Channel 1 (CH 1) 22 18 Main Path Specification Gain calibration accuracy...................... ±0.4 dB Gain variation by temperature............... Less than -0.03 dB/°C Maximum output power........................ +20 dBm Output 1 dB compression....................... +16 dBm typical Second harmonic at............................... +4 dBm, -40 dBc typical Survival input power.............................. +20 dBm maximum (with attenuation) DC voltage at input................................ ±20 V maximum2 Gain (dB) 14 1 10 6 2 –2 –6 Under 500 kHz, ±1.5 dB. For all frequencies, degrades by ±0.03 dB/°C outside by 15 to 35 °C temperature range. 2 Nondamaging for steady-state DC only. Direct path passes input DC level to output. –10 –14 0 400M 800M 1.2G 1.6G 2.0G Frequency (Hz) 2.4G 3.0G Typical Gain Range, CH 1 Main Path 1 Minimum Gain Range, CH 1 Main Path Figure 7. Programmable Gain Range Insertion loss calibration accuracy........ ±0.4 dB1 Survival input power.............................. +20 dBm maximum (with attenuation) DC voltage at input................................ ±20 V maximum2 Under 500 kHz, ±1.5 dB. For all frequencies, degrades by ±0.03 dB/°C outside by 15 to 35 °C temperature range. 2 Nondamaging for steady-state DC only. Direct path passes input DC level to output. 1 Channel 0 Performance 40 38 Typical Gain, CH 0 Minimum Gain, CH 0 36 Gain (dB) 34 Noise Figure (dB) Direct Path Specification 15 14 13 12 11 10 9 8 7 6 5 4 3 Typical NF, CH 1 Main Path Maximum NF, CH 1 Main Path 0 400M 800M 1.2G 1.6G 2.0G Frequency (Hz) 2.4G 3.0G Figure 8. Noise Figure (NF) 32 30 28 26 24 22 20 0 400M 800M 1.2G 1.6G 2.0G Frequency (Hz) 2.4G 3.0G Figure 5. Gain BUY ONLINE at ni.com or C ALL 800 813 36 93 (U.S.) 3 PXI RF Signal Conditioning NI PXI-5691 Specifications Channel 1 (CH 1) Performance, Main Path Channel 0 (CH 0) Performance, Main Path Level calibration accuracy..................... ±0.9 dB1 Absolute maximum input power (no damage)....................................... +30 dBm typical (7.1 Vrms, 10 V pk at 50 Ω) Maximum reverse power (no damage)....................................... +25 dBm maximum ±10 V typical2 Gain variation by temperature............... (-1.18*10-12 * F ) – 0.01 in dB/°C3 F = Frequency in Hz Valid for Tref ±5 °C. For temperatures other than Tref, the level calibration accuracy is valid after applying the gain correction factor for Δ T. 2 DC coupled from input to output, but only calibrated from 50 MHz to 8 GHz. 3 Calculate the correction factor using the following equation: Δ Gain = (Gain Variation by temperature) * Δ T where Δ T = Tsensor – Tref Tsensor = the temperature reading of the onboard temperature sensor in °C, as reported by 1 the ni5690 Get Temperature VI or the ni5690_getTemperature function Tref = 34 °C 36.0 Level settling time................................. +4 μs maximum1 Level calibration accuracy..................... ±0.9 dB2 Absolute maximum input power (no damage)....................................... +30 dBm typical (7.1 Vrms, 10 Vpk at 50 Ω) (no damage)....................................... +20 dBm maximum Maximum output power........................ +25 dBm maximum DC voltage at input................................ ±10 V typical Gain variation by temperature............... (-1.34*10-12 * F ) – 0.01 in dB/°C3 F = Frequency in Hz The attenuator settling time is measured to 0.5 dB of final value when switching from minimum to maximum attenuation. Achieving settling times closer to the final attenuation value may take substantially longer. 2 Valid for Tref ±5 °C. For temperatures other than Tref, the level calibration accuracy is valid after applying the gain correction factor for Δ T. 3 Calculate the correction factor using the following equation: Δ Gain = (Gain Variation by temperature) * Δ T where Δ T = Tsensor – Tref Tsensor = the temperature reading of the onboard temperature sensor in °C, as reported by the ni5690 Get Temperature VI or the ni5690_getTemperature function Tref = 34 °C 1 Max Typical Min 34.0 35.0 30.0 32.0 25.0 20.0 30.0 Gain (dB) Gain (dB) +0.5 dB typical Maximum reverse power DC voltage at input................................ +31.5 dB Attenuation resolution........................... +20 dBm maximum Maximum output power (no damage)....................................... Variable level range............................... 28.0 26.0 15.0 10.0 5.0 0.0 –5.0 24.0 0.0 2.0 4.0 6.0 8.0 –10.0 –15.0 Frequency (GHz) Max Gain Min Gain Limits –20.0 Figure 9. Measured Gain 0.0 2.0 4.0 6.0 8.0 Frequency (GHz) 11.0 Figure 11. Measured Programmable Gain Range 10.0 9.0 8.0 NF (dB) 7.0 6.0 5.0 4.0 3.0 2.0 Max Typical 1.0 0.0 10 50 100 1000 8000 Frequency (MHz) Figure 10. Measured Noise Figure BUY ONLINE at ni.com or C ALL 800 813 36 93 (U.S.) 4 PXI RF Signal Conditioning 12.0 11.0 10.0 9.0 NF (dB) 8.0 7.0 6.0 5.0 4.0 3.0 2.0 Max Typical 1.0 0.0 10 50 1000 100 8000 Frequency (MHz) Figure 12. Measured Noise Figure Channel 0/Channel 1 Cascaded Path Performance 60.0 55.0 50.0 Gain (dB) 45.0 40.0 CH 0 Main: CH 1 Max Gain CH 0 Main: CH 1 Min Gain 35.0 30.0 25.0 20.0 15.0 0.0 2.0 4.0 6.0 8.0 Frequency (GHz) Figure 13. Measured Cascaded Gain Response BUY ONLINE at ni.com or C ALL 800 813 36 93 (U.S.) 5 PXI RF Signal Conditioning NI PXI-5695 Specifications Channel 0 (CH 0) Performance, Main Path Level calibration accuracy..................... ±0.7 dB1 Maximum input power (operation)........ +33 dBm maximum Channel 1 (CH 1) Performance Programmable Path Specifications (10 Vrms, 14 Vpk) Absolute maximum input power (no damage)....................................... +33 dBm maximum Maximum reverse power (no damage)....................................... +33 dBm maximum DC voltage at input................................ ±10 V maximum2 Gain variation by temperature............... (-4.66*10-13 * F ) in dB/°C3 F = Frequency in Hz Valid for Tref ±5 °C. For temperatures other than Tref, the level calibration accuracy is valid after applying the gain correction factor for Δ T. 2 DC coupled from input to output, but only calibrated from 50 MHz to 8 GHz. 3 Calculate the correction factor using the following equation: Δ Gain = (Gain Variation by temperature) * Δ T where Δ T = Tsensor – Tref Tsensor = the temperature reading of the onboard temperature sensor in °C, as reported by 1 the ni5690 Get Temperature VI or the ni5690_getTemperature function Tref = 26 °C Attenuation (dB) –27.0 –28.0 –29.0 –30.0 –31.0 Variable attenuator range...................... 0 dB to +31.5 dB Attenuation resolution........................... +0.5 dB typical Level calibration accuracy..................... ±0.7 dB1 Attenuation settling time....................... +4 μs maximum2 Maximum input power (operation)........ +27 dBm maximum (5 Vrms, 7 Vpk) Absolute maximum input power (no damage)....................................... Maximum reverse power (no damage)....................................... Gain variation by temperature............... the ni5690 Get Temperature VI or the ni5690_getTemperature function Tref = 26 °C –10.0 –15.0 4.0 Frequency (GHz) Figure 14. Measured Attenuation (Fixed Attenuator) 6.0 8.0 –20.0 Attenuation (dB) 2.0 (-2.69*10-13 * F ) in dB/°C3 F = Frequency in Hz Valid for Tref ±5 °C. For temperatures other than Tref, the level calibration accuracy is valid after applying the gain correction factor for Δ T. 2 The attenuator settling time is measured to 0.5 dB of final value when switching from minimum to maximum attenuation. Achieving settling times closer to the final attenuation value may take substantially longer. 3 Calculate the correction factor using the following equation: Δ Gain = (Gain Variation by temperature) * Δ T where Δ T = Tsensor – Tref Tsensor = the temperature reading of the onboard temperature sensor in °C, as reported by –33.0 0.0 +26 dBm maximum 1 Max Typical Min –32.0 +27 dBm maximum –25.0 –30.0 –35.0 –40.0 –45.0 –50.0 Min Attn Max Attn Limits –55.0 0.0 2.0 4.0 6.0 8.0 Frequency (GHz) Figure 15. Measured Programmable Attenuation Range BUY ONLINE at ni.com or C ALL 800 813 36 93 (U.S.) 6 PXI RF Signal Conditioning Channel 0/Channel 1 Cascaded Path Performance –10.0 –20.0 Gain (dB) –30.0 CH 0 Direct : CH 1 Min Attn –40.0 CH 0 Main : CH 1 Max Attn –50.0 –60.0 –70.0 –80.0 0.0 2.0 4.0 6.0 8.0 Frequency (GHz) Figure 16. 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