Absolute Maximum Ratings
| Parameter | Maximum Rating | Unit |
|---|---|---|
| DC Current | 0.5 | A |
| DC Voltage | 30 | V |
| Maximum Storage Temperature | 125 | °C |
| Minimum Storage Temperature | -65 | °C |
| RF Power Handling | 1 | W |
Sales: 408-778-9952 | General: 408-778-4200 | Fax: 408-778-4300
Sales & Customer Support: [email protected]
Tech Support: [email protected]
Device Overview
General Description
The BT-0018 is constructed using a custom-made, resonance-free conical inductor to achieve extremely broadband performance. By minimizing the overall inductor size and using proprietary packaging techniques, the BT-0018 is a superior option in terms of performance, reliability and ease-of-use when compared to cumbersome self-made bias tees employing off-the-shelf conical inductors. The extremely low cutoff and resonance free operation makes the BT-0018 suitable for biasing amplifiers, lasers, and modulators driven with high frequency data patterns.
Features
- Broadband: 40 kHz to 18 GHz
- Low Insertion Loss
- Non-Resonant
- Compact Size
Applications
- Test and Measurement Equipment
Functional Block Diagram
BT-0018
Bias Tee
Table Of Contents
- Device Overview
- Port Configuration and Functions
- Revision History
- Specifications
- Operation
- Mechanical Data
Revision History
| Revision Code | Revision Date | Comment |
|---|---|---|
| B | 2020-10-01 | Performance vs Bias current plots. |
BT-0018
Bias Tee
Port Configuration and Functions
Port Functions
| Port | Function | Connector Type | Description | DC Equivalent Circuit |
|---|---|---|---|---|
| Common | RF+DC | SMAM | This port is DC blocked to the RF port and DC connected to the DC port through an internal RF choke. |  |
| DC | DC | - | This port is internally connected to an RF choke which is DC connected to the RF+DC port and DC blocked to the RF port. | |
| RF | RF | SMAF | This port is internally DC blocked to the RF+DC and DC ports. | |
BT-0018
Bias Tee
Specifications
Package Information
| Parameter | Details | Rating |
|---|---|---|
| Dimensions | - | 11.94 x 11.94 mm |
BT-0018
Bias Tee
Electrical Specifications
Specifications guaranteed at +25C, measured in a 50-Ohm system
| Parameter | Test Conditions | Minimum Frequency (GHz) | Maximum Frequency (GHz) | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|---|
| DC Port Isolation | - | 0.00004 | 18 | - | 35 | - | dB |
| DC Resistance | - | 0.00004 | 18 | - | 6 | - | Ω |
| Insertion Loss | - | 0.00004 | 18 | - | 0.6 | 1.5 | dB |
| Return Loss | - | 0.00004 | 18 | - | 16 | - | dB |
| Risetime/Falltime 1 | - | 0.00004 | 18 | - | 13 | - | ps |
| Parameter | Test Conditions | Minimum Frequency (GHz) | Maximum Frequency (GHz) | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|---|
| DC Port Isolation | - | 0.00004 | 18 | - | 35 | - | dB |
| DC Resistance | - | 0.00004 | 18 | - | 6 | - | Ω |
| Insertion Loss | - | 0.00004 | 18 | - | 0.6 | 1.5 | dB |
| Return Loss | - | 0.00004 | 18 | - | 16 | - | dB |
| Risetime/Falltime 1 | - | 0.00004 | 18 | - | 13 | - | ps |
[1] Specified as 90%/10%. Calculated from 𝜏bt2 = (𝜏out2 - 𝜏in2)
BT-0018
Bias Tee
Typical Performance Plots
BT-0018
Bias Tee
Typical Performance vs Bias Current at Low Frequencies Plots
BT-0018
Bias Tee
Time Domain Performance Plots
Oscilloscope measurements of the BT-0018 with a 10Gb/s PRBS pattern. Eye diagrams are taken with a 231-1 PRBS input demonstrating minimal eye distortion/closure afforded by the extremely low frequency operation of the bias tee.
BT-0018
Bias Tee
