设计文件
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DOCSIS 3.0 Plus Upstream Amplifier
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The BGA3031 is an upstream amplifier meeting the Data Over Cable Service Interface Specifications (DOCSIS 3.0). It is designed for cable modem, CATV set top box and VoIP modem applications. The device operates from 5 MHz to 85 MHz. The BGA3031 provides 58 dB gain control range in 1 dB increments with high incremental accuracy. Its maximum gain setting delivers 34 dB voltage gain and a superior linear performance.
It supports high output power levels, exceeding the DOCSIS 3.0 power levels while minimizing distortion and output noise levels. The BGA3031 is capable of transmitting 1 to 8 64-QAM and 1 to 8 QPSK modulated carriers while meeting the DOCSIS 3.0 ACLR specification under DOCSIS 3.0 + 4 dB conditions.
The BGA3031 operates at 5 V supply. The gain is controlled via a 3-wire serial interface. The current consumption can be reduced in 4 steps via the serial interface. This enables the user to optimize between DC power efficiency and linearity. In addition the current is automatically reduced at lower gain settings while preserving the linearity performance. In disable mode the device draws typical 6 mA while it still can be programmed to new gain and current settings.
The BGA3031 is housed in 20 pins 5 mm x 5 mm leadless HVQFN package.
sot662-1_3d
产品详情
Features
- 58 dB gain control range in 1 dB steps using a 3-wire serial interface
- 5 MHz to 85 MHz frequency operating range
- ±0.2 dB incremental gain step accuracy
- Maximum voltage gain 34 dB
- Excellent IMD3 of -70 dBc at 64 dBmV output power
- Excellent second harmonic level of -80 dBc at 64 dBmV output power
- Excellent third harmonic level of -67 dBc at 64 dBmV output power
- Excellent noise figure of 3.5 dB at maximum gain
- Capable of transmitting 1 to 8 64-QAM modulated carriers while meeting the DOCSIS 3.0 specification under DOCSIS 3.0 + 4 dB conditions (61 dBmV total output power)
- Capable of transmitting 1 to 8 QPSK modulated carriers while meeting the DOCSIS 3.0 specification under DOCSIS 3.0 + 4 dB conditions (65 dBmV total output power)
- 5 V single supply operation
- Excellent ESD protection at all pins
- Unconditionally stable
- Compliant to Directive 2002/95/EC, regarding Restriction of Hazardous Substances (RoHS)
Target Applications
- DOCSIS 3.0 and DOCSIS 3.0 + 4 dB cable modems
- VoIP modems
- Set-top boxes
购买/参数
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