PM7820 Datasheet | PMC-Sierra

OVERVIEW The PALADIN family of digital multicarrier chip technologies enables the development of spectrally efficient and power efficient 3G and Wi MAX base stations that use fewer and less expensive ponents than traditional feedforward designs. The PALADIN products, which include the PM7800 PALADIN 10, PM7815 PALADIN 15, PM7820 PALADIN 20, and the PM7819 PALADIN WAVESHAPER, make extensive use of proprietary advanced high-speed DSP-based architectures and techniques. The PM7820 PALADIN 20 device inhibits distortion in the power amplifier and transmitter chain of cellular base stations using digital adaptive predistortion techniques. The PALADIN 20 device supports the new Doherty power amplifier (PA) architectures in BTS designs, which achieve power efficiencies of more than 40 per cent, doubling the efficiency of currently deployed Class A/B LDMOS PAs. The device also enables integration into space-constrained next generation Remote Radio Head (RRH) architectures, through its 23 mm x 23 mm footprint. As well, the device provides 20 MHz of bandwidth for WCDMA, CDMA2000, and Wi MAX applications. The PALADIN 20 system prises a Digital Correction Signal Processor (DCSP) chip and an Adaptive Control Processor pensation Engine (ACPCE). The DCSP applies corrective parameters to each sample in real time, while the ACPCE automatically adapts the corrective parameters to maintain optimum performance as the distortions change over time. BENEFITS - The PALADIN 20 device is the only plete, off-the-shelf, production-released, standard product for DPD. - The PALADIN family is deployed in Carrier Networks today. - The PALADIN family has proven performance and reliability. - The PALADIN family includes production-ready firmware that implements a prehensive, industry-leading, predistortion algorithm. PRODUCT HIGHLIGHTS - Input signal bandwidth up to 20 MHz - Output sample rate up to 93 MHz - Digital AQM pensation - Automatic Gain Control to +/-0.1 d B - Constant-gain mode to...