BGA3131 DOCSIS 3.1 upstream amplifier Rev. 3.1 30 April 2021 Product data sheet 1 General description The BGA3131 is an upstream amplifier meeting the Data Over Cable Service Interface Specifications (DOCSIS 3.1). It is designed for cable modem, CATV set top box and VoIP modem applications. The device operates from 5 MHz to 205 MHz. The BGA3131 provides 58 dB gain control range in 1 dB increments with high incremental accuracy. Its maximum gain setting delivers 37 dB voltage gain and a superior linear performance. It supports the DOCSIS 3.1 output power levels while meeting the stringent ACLR requirements. The BGA3131 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 interface 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 25 mA while it can be still programmed to new gain and current settings. The BGA3131 is housed in 20 pins 5 mm x 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 205 MHz frequency operating range 0.4 dB incremental gain step accuracy Maximum voltage gain 37 dB Excellent IMD3 of -60 dBc at 68 dBmV total output power Excellent second harmonic level of -65 dBc at 68 dBmV total output power Excellent third harmonic level of -65 dBc at 68 dBmV total output power Excellent noise figure of 6.5 dB at maximum gain Capable of transmitting modulated carriers while meeting the DOCSIS 3.1 ACLR specification. At an output power of 65 dBmV at the F-connector (assuming 3 dB of output loss), the typical ACLR is -62 dBc 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) HVQFN20NXP Semiconductors BGA3131 DOCSIS 3.1 upstream amplifier 3 Applications DOCSIS 3.1 and 3.0 cable modems VoIP modems Set-top boxes 4 Quick reference data Table 1.Quick reference data Typical values at V = 5 V, decimal current setting = 3, decimal gain setting 50 to 63 T = 25 C Z = 200 : Z = CC amb i(dif) o(se) 75 voltage gain does include loss due to output transformer. Unless otherwise specified. All RF parameters are measured on an application board with the circuit as shown in Figure 12 and components listed in Table 17. Symbol Parameter Conditions Min Typ Max Unit I supply current transmit-enable mode TX EN = HIGH 610 660 720 mA CC transmit-disable mode TX EN = LOW - 25 - mA 1 2 G voltage gain gain code = 111111 - 37 - dB v NF noise figure transmit-enable mode gain code = 111111 - 6.5 - dB second harmonic level transmit-enable mode gain code = 111111 - -65 - dBc 2H P (RMS) = 31 dBmV P (RMS) = 68 dBmV i L into 75 impedance third harmonic level transmit-enable mode gain code = 111111 - -65 - dBc 3H P (RMS) = 31 dBmV P (RMS) = 68 dBmV i L into 75 impedance IMD3 third-order transmit-enable mode gain code = 111111 - -60 - dBc intermodulation distortion P (RMS) = 65 dBmV per tone into 75 impedance L P output power at 1 dB gain CW input signal RMS value, f = 205 MHz - 78 - dBmV L(1dB) compression 1 P 31 dBmV i 2 Excluding 5.7 dB loss of resistive matching circuit, to match 75 to 50 Table 2.ACLR quick reference data Typical values at V = 5 V, decimal current setting = 3, decimal gain setting 60, T = 25 C Z = 200 : Z = 75 CC amb i(dif) o(se) channel bandwidth = 192 MHz, integration bandwidth = 9.6 MHz, f = 5 MHz to 205 MHz. Unless otherwise specified. Symbol Parameter Conditions Min Typ Max Unit DOCSIS 3.1 ACLR adjacent channel P (RMS) = 31 dBmV P (RMS) = 68 dBmV, channel - -62 - dBc i L leakage ratio configuration: channel bandwidth is 192 MHz, with exclusion band at 147.5 MHz, with a bandwidth of 9.6 MHz. Input signal with a PAPR of 13 dB BGA3131 All information provided in this document is subject to legal disclaimers. NXP B.V. 2021. All rights reserved. Product data sheet Rev. 3.1 30 April 2021 2 / 27