ACA1240 Skyworks

DATA SHEET ACA1240: CATV Infrastructure Amplifier 1.2 GHz CCAP/Edge QAM/CMTS Driver Applications CATV head-end CCAP/EQAM/CMTS modulators MDU output device Features 35 dB gain Meets DRFI specification +5 dB margin High-linearity, high-gain integrated amplifier with an adjustable linear attenuator Balanced inputs and outputs matched for a 75 system 0 to 20 dB continuously adjustable attenuation using an external analog control signal Single 12 V supply with 6 W power consumption High-linearity GaAs process Description Unconditional stability (K factor > 1) The ACA1240 is a GaAs based amplifier that contains highly linear amplification and attenuation stages for use in CATV CCAP/EQAM/CMTS modulators and networks. It incorporates a TM continuously adjustable linear attenuator that is controlled by an Skyworks Green products are compliant with external analog voltage. This glitch-free attenuator provides a all applicable legislation and are halogen-free. minimum of 20 dB of continuously variable attenuation and is For additional information, refer to Skyworks TM preceded by a high-linearity pre-amplifier and followed by a Denition of Green , document number high-gain output driver. Both input and output are matched to 75 SQ040074. using balun transformers. The ACA1240 operates from a single 12 V supply and is offered in an 11 mm x 11 mm surface-mount package. A block diagram of the ACA1240 is shown in Figure 1. The device package and pinout are shown in Figure 2. Signal pin assignments and functional pin descriptions are described in Table 1. Gain + Control 12 V +12 V RF IN + RF OUT + Output Driver Preamp RF IN RF OUT Attenuator 204580-001 Figure 1. ACA1240 Block Diagram Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 204580G Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice December 13, 2018 1 DATA SHEET ACA1240: CATV INFRASTRUCTURE AMPLIFIER 1.2 GHz CCAP/EDGE QAM/CMTS DRIVER 1 33 32 28 27 26 34 31 30 29 25 Temp Monitor +12 V Shutdown 2 24 Gain Control 23 12 V OUTPUT 3 RF IN+ 4 22 RF OUTPUT+ GND GND 5 21 GND 20 6 GND RF IN- 7 19 RF OUTPUT- 8 13 16 18 IADJ1 9 10 11 12 14 15 17 IADJ2 204580-002 Figure 2. ACA1240 Pinout (Top View) 1 Table 1. ACA1240 Signal Pin Descriptions Pin Name Description Pin Name Description 1 TM Device temperature monitor 18 IADJ2 Output amplifier current adjustment 2 PC 1 DC power shutdown 19 RF OUT- RF output 3 Gain control 0 to 12 V variable attenuator 20 GND Ground 4 RF IN+ RF input 21 GND Ground 5 GND Ground 22 RF OUT+ RF output 6 GND Ground 23 12V OUT +12 V output from device 7 RF IN- RF input 24 N/C No connection 8 IADJ1 Input amplifier current adjustment 25 +12V +12 supply voltage 9 to 17 GND Ground 26 to 34 GND Ground 1 The ground pad between pins 5/6 and 20/21 must have a low inductance and low thermal resistance connection to the applications printed circuit board ground plane. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 December 13, 2018 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 204580G GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND