MAX3522B Programmable Gain Amplifier Circuit

Analog Devices MAX3522B Programmable Gain Amplifier (PGA) is designed to exceed the Data Over Cable Service Interface Specification (DOCSIS) 3.1 Upstream Transmit requirements. MAX3522B has dual outputs, eliminating the need for an external RF switch when selecting two different upstream bandwidths. The PGA meets the DOCSIS 3.1 spurious limits while transmitting a combined output power of 68dBmV over the RF bandwidth of 5MHz to 204MHz from either output. The gain is controlled in 1dB steps over a 54dB range using a Serial Peripheral Interface (SIP) 3-wire interface. Analog Devices MAX3522B Programmable Gain Amplifier's high-voltage complementary metal-oxide-semiconductor (CMOS) process enables the device to deliver a high dynamic range while minimizing power dissipation under a +5V supply rail.