QPB8857
47 - 1218 MHz, 28 dB CATV Doubler Amplifier
Key Features
- High Gain: 28 dB @ 1218 MHz
- Adjustable Bias
- 57 dBmV/ch virtual 1.2 GHz, at 19 dB tilt
- Low Noise: 4.5 dB
- Excellent Composite Distortion
- Compact Size: 40P 5.0 x 7.0 QFN
The QPB8857 is a GaAs pHEMT/MESFET 75-ohm Doubler RF amplifier IC featuring over 28 dB of flat gain and low noise. This IC is designed to support DOCSIS 3.1 applications up to 1218 MHz using a single 24V supply. The QPB8857 offers low noise and low distortion at high efficiency consuming only 10.5 W in a 5.0 x 7.0 QFN package. Its compact size and low ϴjc enable integration that is ideally suited for hybrid module or an alternative to hybrid module applications.
Typical Applications
- DOCSIS 3.1
- Broadband CATV hybrid modules
- Head End CMTS Equipment
- 75-ohm amplifiers
Product Categories
Application Categories
| Type | Downstream |
| Frequency Min(MHz) | 47 |
| Frequency Max(MHz) | 1,218 |
| Gain(dB) | 28 |
| Pout(dBmV) | 57 |
| CSO(dBc) | -68 |
| CTB(dBc) | -75 |
| NF(dB) | 4.5 |
| Voltage(V) | 24 |
| Current(mA) | 440 |
| Package Type | 40P QFN |
| Package(mm) | 5.0 x 7.0 |
| RoHS | Yes |
| Lead Free | Yes |
| Halogen Free | Yes |
| ITAR Restricted | No |
| ECCN | 5A991G |