1. general description the BGA3031 is an upstream amplifier meeting the data over cable service interface specifications (docsis 3.0). it is designed fo r 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, ex ceeding 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 carr iers while meeting th e 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 ga in settings while preserving the linearity performance. in disable mode the device draws typical 6 ma wh ile it still can be prog rammed 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 stable BGA3031 docsis 3.0 plus upstream amplifier rev. 2 ? 26 february 2014 product data sheet + 9 4 ) 1
BGA3031 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 2 ? 26 february 2014 2 of 23 nxp semiconductors BGA3031 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 [1] voltage gain does not include loss due to input and output transformers. [2] p i = 30 dbmv. table 1. quick reference data typical values at v cc = 5 v; current setting = 3; t case = 25 ? c; z i = 200 ? : z o = 75 ? , unless otherwise specified. symbol parameter conditions min typ max unit i cc supply current transmit-enable mode; tx_en = high - 325 - ma transmit-disable mode; tx_en = low - 6.0 - ma g v voltage gain gain code = 111111 [1] [2] -34- db nf noise figure transmit-enable mode; gain code = 111111 - 3.5 - db ? 2h second harmonic level p i = 30 dbmv; p l = 64 dbmv into 75 ? differential impedance - ? 80 - dbc ? 3h third harmonic level p i = 30 dbmv; p l = 64 dbmv into 75 ? differential impedance - ? 67 - dbc imd3 third-order intermodulation distortion p i = 27 dbmv per tone; p l = 61 dbmv per tone into 75 ? differential impedance - ? 70 - dbc p l(1db) output power at 1 db gain compression signal - 74 - dbmv table 2. aclr quick reference data typical values at v cc = 5 v; current setting = 3; t case = 25 ? c; z i = 200 ? : z o = 75 ? ; channel bandwidth = 1280 khz; 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 aclr adjacent channel leakage ratio p i = 29 dbmv; p l = 61 dbmv 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 aclr adjacent channel leakage ratio p i = 33 dbmv; p l = 65 dbmv 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 b.v. 2014. all rights reserved. product data sheet rev. 2 ? 26 february 2014 3 of 23 nxp semiconductors BGA3031 docsis 3.0 plus upstream amplifier 5. ordering information 6. functional diagram table 3. ordering information type number package name description version BGA3031 hvqfn20 plastic thermal enhanced very thin quad flat package; no leads; 20 terminals; body 5 ? 5 ? 0.85 mm sot662-1 fig 1. functional diagram d d d & |