Microtune MT1550
The MT1550 is a low-cost programmable-gain power amplifier IC for use in CATV upstream PRODUCT BRIEF applications. The Microtune® MT1550 is a 3.3 volt part optimized for the DOCSIS 1.1 upstream The MT1550 is a 3.3V programmable standard. The MT1550 also includes gain upstream amplifier with integrated an on-chip input anti-aliasing filter, anti-aliasing filter.APPLICATIONS
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● Cable modems Telephony over cable Set-top box CATV
FEATURES
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● Integrated on-chip antialiasing filter Maximum output level of 67dBmV Low power-up/down transients of 16mVp-p typical at 61dBmV output Ultra low third harmonic distortion Single +3.3V supply 59dB gain range Gain programmable in 1dB steps Low transmit output noise floor: -50dBmV in 160kHz Low transmit-disable output noise: 1nV / √Hz Two power-down modes Primarily for set-top boxes DOCSIS 1.1 compatible
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● M I C R O T U N E MT 1 55 0 UP ST RE A M A MP LI FI ER PRODUCT BRIEF Vcsns Vrsns Vcc1 PARAMETER Supply voltage Supply current, shutdown mode Gain code = 52 to 63 MIN 3.15 TYP 70 259 MAX 3.45 110 UNIT V µA mA Vcc2 17 SUPPLY CURRENT, TRANSMIT MODE, FILTER ENABLED DIGITAL INPUT High voltage Low voltage Current 2.0 0.7 0 V V µA 16 20 19 18 GND2 DC
ELECTRICAL CHARACTERISTICS
GND1 Vin+ VinDGND CS 1 2 3 4 5 15 14 13 12 11 NC Vout+ VoutNC Vcm ACELECTRICAL CHARACTERISTICS
PARAMETER Output 1dB co...