BGA3031X

BGA3031 DOCSIS 3.0 plus upstream amplifier Rev. 3 20 November 2014 Product data sheet 1. General description 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 5 mm leadless HVQFN package. 2. Features and benefits 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 stableBGA3031 NXP Semiconductors DOCSIS 3.0 plus upstream amplifier Compliant to Directive 2002/95/EC, regarding Restriction of Hazardous Substances (RoHS) 3. Applications DOCSIS 3.0 and DOCSIS 3.0 + 4 dB cable modems VoIP modems Set-top boxes 4. Quick reference data Table 1. Quick reference data Typical values at V = 5 V current setting = 3 T = 25 C Z = 200 : Z = 75 , unless otherwise specified. CC amb i o Symbol Parameter Conditions Min Typ Max Unit I supply current transmit-enable mode TX EN = HIGH - 325 - mA CC transmit-disable mode TX EN = LOW - 6.0 - mA 1 2 G voltage gain gain code = 111111 -34 - dB v NF noise figure transmit-enable mode gain code = 111111 - 3.5 - dB second harmonic level P = 30 dBmV P = 64 dBmV into - 80 - dBc 2H i L 75 differential impedance third harmonic level P = 30 dBmV P = 64 dBmV into - 67 - dBc 3H i L 75 differential impedance IMD3 third-order intermodulation distortion P = 27 dBmV per tone P = 61 dBmV per - 70 - dBc i L tone into 75 differential impedance P output power at 1 dB gain compression signal - 74 - dBmV L(1dB) 1 Voltage gain does not include loss due to input and output transformers. 2 P = 30 dBmV. i Table 2. ACLR quick reference data Typical values at V = 5 V current setting = 3 T = 25 C Z = 200 : Z = 75 channel bandwidth = 1280 kHz CC amb i o integration bandwidth = 1280 kHz f = 5 MHz to 85 MHz, unless otherwise specified. Symbol Parameter Conditions DOCSIS 3.0 spec. Min Typ Max Unit DOCSIS 3.0 + 4 dB 64-QAM = 29 dBmV P = 61 dBmV ACLR adjacent channel leakage ratio P i L 1 input channel 50 - 68 - dBc 2 input channels 47 - 62 - dBc 4 input channels 44 - 58 - dBc 8 input channels - - 56 - dBc DOCSIS 3.0 + 4 dB QPSK = 33 dBmV P = 65 dBmV ACLR adjacent channel leakage ratio P i L 1 input channel 50 - 66 - dBc 2 input channels 47 - 58 - dBc 4 input channels 44 - 50 - dBc 8 input channels - - 42 - dBc BGA3031 All information provided in this document is subject to legal disclaimers. NXP Semiconductors N.V. 2014. All rights reserved. Product data sheet Rev. 3 20 November 2014 2 of 23