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ADA4320-1 Datasheet

Part Number ADA4320-1
Manufacturers Analog Devices
Logo Analog Devices
Description Low-distortion Upstream CATV Line Driver
Datasheet ADA4320-1 DatasheetADA4320-1 Datasheet (PDF)

High Power, Low Distortion Upstream CATV Line Driver ADA4320-1 www.DataSheet4U.com FEATURES Supports CableLabs® DOCSIS 3.0/2.0 and EuroDOCSIS 3.0/2.0 specifications for customer premises equipment (CPE) upstream transmission 5 V single-supply operation Excellent adjacent channel rejection performance −66 dBc ACPR for a single QPSK channel −63 dBc ACPR for 4× QAM64 channels Gain programmable in 1 dB steps over a 59 dB range Gain range: −27 dB to +32 dB Current-scaled output stage Low between-bur.

  ADA4320-1   ADA4320-1






Low-distortion Upstream CATV Line Driver

High Power, Low Distortion Upstream CATV Line Driver ADA4320-1 www.DataSheet4U.com FEATURES Supports CableLabs® DOCSIS 3.0/2.0 and EuroDOCSIS 3.0/2.0 specifications for customer premises equipment (CPE) upstream transmission 5 V single-supply operation Excellent adjacent channel rejection performance −66 dBc ACPR for a single QPSK channel −63 dBc ACPR for 4× QAM64 channels Gain programmable in 1 dB steps over a 59 dB range Gain range: −27 dB to +32 dB Current-scaled output stage Low between-burst output noise level −70 dB mV in 160 kHz bandwidth Maintains constant output impedance in enable, disable, and sleep conditions Selectable low power modes 12 mA in Tx disable 12 μA in sleep mode (full power-down) 3-wire, SPI-compatible interface 4 mm × 5 mm 24-lead LFCSP, RoHS compliant VIN– FUNCTIONAL BLOCK DIAGRAM VOUT+ DIFF OR SINGLE INPUT AMP VERNIER ATTENUATION CORE POWER AMP VOUT– 8 ZIN (SINGLE) = 320Ω ZIN (DIFF) = 640Ω DECODE 8 DATA LATCH ZOUT DIFF = 300Ω VIN+ POWER-DOWN LOGIC RAMP ADA4320-1 8 SHIFT REGISTER TXEN SLEEP 08707-001 GND DATEN SDATA CLK Figure 1. APPLICATIONS DOCSIS 3.0 and EuroDOCSIS cable modems/E-MTAs DOCSIS 3.0 set-top boxes CATV telephony modems Coaxial or twisted pair line drivers GENERAL DESCRIPTION The ADA4320-1 is a high power, ultralow distortion amplifier designed for CATV reverse channel line driving. Its features and specifications make the ADA4320-1 ideally suited for DOCSIS 3.0and EuroDOCSIS 3.0-based applications. Both gain and output sta.


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