General Description
The MAX3507 is a variable-gain power amplifier for use in CATV upstream transmitters. The variable-gain feature has 55dB of dynamic range and is controlled by a 3-wire SPI™ bus. The device is capable of generating +64dBmV output (16QAM/QPSK) when driven with a +34dBmV nominal input signal. The on-chip anti-alias lowpass filter with 75MHz cutoff frequency saves system design cost and space. The optional positive slope generator provides system design flexibility.

FEATUREs
♦ Built-In 5th-Order Elliptic Anti-Aliasing Filter
♦ 5MHz to 65MHz Operation
♦ 55dB Gain Control Range
♦ Optional Positive Slope Generator
♦ 55dB Spurious-Free Dynamic Range Over
   Transmit Band

APPLICATIONs
   Cable Modem Upstream Transmitter
   Set-Top Box Upstream Transmitter
   Telephony Over Cable