Datasheet Summary
Ordering number : EN5689A
Monolithic Linear IC
QPSK Transmitter for Cable TV
Overview
The LA7790M is a QPSK data transmitter for digital cable TV applications. By integrating the I/Q quadrature modulator, RF amplifier, electronic volume control, mute control, and other functions onto a single chip, parts count is reduced and set size is miniaturized.
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Varactor diode-based VCO Muting Electronic volume control Power-saving modes Switchable output frequency range Power supply voltage of 5 V (4.5 to 5.5 V)
Features
- Maximum RF amplifier output level of +10 dBm (75Ω terminator), suitable for directly driving the cable.
- RF output frequency range of 5 to 70 MHz....