TAT2814A 可变增益 DOCSIS 3.0 放大器
The TAT2814A is an RFIC for DOCSIS 3.0 Output Sections, such as CMTS and Edge QAM. It combines a low-reflection differential input stage, a variable gain step attenuator and an efficient output amplifier to provide significant reduction in power consumption and PC board space. It replaces circuitry requiring up to 10x the board space and 2x the power. The TAT2814A meets the stringent DOCSIS 3.0 output linearity specifications with extra margin to overcome additional losses before the output connector. The TAT2814A is packaged in an industry standard 7x7 mm 48-pin QFN and consumes less than 5 watts between a 5 V input amplifier supply and an 8 V output amplifier supply. The TAT2814A utilizes proven GaAs pHEMT at Edge QAM optimized voltage to significantly reduce power consumption of the output stage.
技术特性
- High typical gain of 22 dB in application circuit
- On-chip active bias for consistent bias current and repeatable performance
- 50 to 1200 MHz bandwidth
- Low noise: typical NF < 2.2 dB to 1000MHz
- Flexible 5 V to 8 V biasing
- IDD (8V) = 190 mA typical in application circuit
- +41 dBm typical OIP3
- +65 dBm typical OIP2
- +22 dBm typical P1dB
- Low distortion: CSO -61 dBc, CTB -81 dBc (10 dBmV/ch at input, 80 ch NTSC flat)
- pHEMT device technology
- SOT-89 package
TAT2814A 产品实物图
|
技术指标
| 频率(GHz) |
衰减幅度 (dB) |
增益 (dB) |
P1dB (dBm) |
OIP3 (dBm) |
NF (dBm) |
Idd (mA) |
Vdd (V) |
封装 |
| 0.045 - 1.003 |
18 |
30 |
28 |
49 |
2.7 |
290, 415 |
5, 8 |
49-pin 7 x 7 laminate |
订购信息 Ordering Information
| TAT2814A1L |
DOCSIS 3.0 Edge QAM Variable GainAmplifier (lead-free/RoHS compliant 7x7 QFN laminate Pkg) |
| TAT2814A1L-EB |
DOCSIS 3.0 Edge QAM Variable GainAmplifier Evaluation Board |
功能框图 Functional Block Diagram
|
