ZNBG4003：Fixed Bias Generators
| Part Number | Data Sheet | SPICE Model | LNA Bias Stages | Mixer Bias Stages | LNA VDRAIN (V) | LNA IDRAIN (mA) | IQ (mA) | VCC (V) | VNEG (V) |
|---|---|---|---|---|---|---|---|---|---|
| ZNBG4003 | ZNBG4003.pdf | - | 4 | 0 | 2 | 15 | 2 | 8 | -2.5 |
Description
The ZNBG4003 is a four stage depletion mode FET bias controller intended primarily for satellite Low Noise Block’s (LNB’s), but its also suitable for other LNA applications such as those in found in PMR’s and microwave links. The ZNBG4003 provides each FET with a negative gate voltage and positive drain voltage with user programmable drain current.
Application
- LNB
Features
- Four stage FET bias controller
- Operates from supplies of 4.74 to 8.0V
- FET drain voltages set at 2.0V
- FET drain current selectable from 0 to 15mA
- Allows first and second stage FETs to be run at different (optimum) drain currents
- FET drain voltages and currents stable over temperature
- FETs protected against overstress during power-up and power-down.
- Internal negative supply generator allowing single supply operation
- Low external component count
QFN1633
- ZNBG4003.pdf ZNBG4003
