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15 GHz Bias Tee
PSPL5547 Datasheet
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PSPL5547 Datasheet
The PSPL5547 is a broadband, coaxial bias insertion tee and DC blocking capacitor. It was designed to have a very low cutoff frequency of only 5 kHz. It passes fast rise pulses with a minimum of waveform distortion. Its rise time is 23 ps. The frequency response is very flat, and the -3 dB bandwidth extends from 5 kHz to 15 GHz. The PSPL5547 is supplied with a 1 mH choke and terminal strip for connection to the DC bias.
Key performance specifications
- 5 kHz to 15 GHz
- 23 ps rise time
- 50 V, 500 mA
Typical performance
1 dB/div log plot to 20 GHz Insertion Loss
1 db/div log plot to 20 GHz Insertion Loss
5 db/div log plot to 20 GHz Return Loss
Top to bottom: 500 ps/div, 100 ps/div, and 20 ps/div. Response to 15 ps rise time input step
2.5% rho/div and 200 ps/div. 35 ps TDR of AC port
Specifications
| Parameter | Symbol | Units | Minimum | Typical | Maximum | Comments |
|---|---|---|---|---|---|---|
| Impedance | Z | ohms | 50 | |||
| Upper 3 dB frequency | fc,h | GHz | 10 | >15 | ||
| Lower 3 dB frequency | fc,l | kHz | 5 | 12 kHz w/o inductor | ||
| Rise time | tr | ps | 23 | 35 | 10 – 90% | |
| Insertion loss | S21 | dB | 0.5 | |||
| Input (AC) Return Loss | S11 | dB | 23 | f = 100 MHz | ||
| Refl. Coefficient (35 ps TDR) | Γ | % | -5 | t > 200 ps | ||
| DC voltage | V | V | 50 | |||
| DC current | I | mA | 500 | |||
| Capacitance | C | μF | 0.44 | - 50%, + 80% | ||
| Inductance | L | mH | 1.34 | ±30% 1 | ||
| Resistance | R | ohms | 1.5 | |||
| RF power | P | W | 2 | Average power | ||
| Isolation | S13 | dB | 30 | |||
| DC path bandwidth | fc,DC | kHz | 6 | |||
| RF Connectors | SMA jacks (f) | |||||
| DC Connector | Solder pin | |||||
| Warranty | One Year | |||||
- Mechanical dimensions
1A 1 mH choke is supplied with the bias tee. It is to be wired in series directly to the DC in solder terminal on the coax module. This is a high impedance point. Avoid using long wire, especially coax, for this connection. Do not locate the choke close to ground. Excessive stray capacitance will cause a resonance that will appear as a dip in the insertion loss between 1 and 10 MHz
Ordering information
Models
- PSPL5547
- BIAS TEE, 15 GHz, 50 V