The MAX2557A is a complete direct-conversion RF-to-bits receiver for cdma2000® 1x/EVDO femto basestations in Band Classes 0 and 1. The device has dedicated receive paths to enable monitoring forward link activities in both bands.
The unique RF-to-bits architecture of the MAX2557A integrates four LNAs with inputs/outputs internally matched to 50Ω, quadrature mixers, baseband anti-aliasing filters, programmable-gain RF and baseband amplifiers, fractional-N RF synthesizer, RF VCO, fractional-N frequency synthesizer for ADC sampling clock, and high-dynamic-range I/Q continuous-time sigma-delta ADCs. The sigma-delta modulators perform I and Q analog-to-digital conversion onto 1-bit digital streams. A programmable LVDS-like interface, with its own frac-N clock generation system, is used for the data transfer to the baseband/DSP, where the final decimation, equalization, and digital channel filtering are performed in compliance with the MAX-PHY digital section definition. Digital IP blocks are available from Maxim. The MAX2557A modes of operation are programmable by a 3-wire serial bus.
The MAX2557A is specified for operation in the extended -40°C to +85°C temperature range and is available in a 7mm x 7mm x 1.4mm fcLGA package with exposed pad (EP).
Thank You for interest in Maxim Integrated. Our free samples program limits the quantities that we can provide to each customer per calendar year.If you feel that you have received this message in error, please contact email@example.com. Alternatively, you can click here to place an order.
Request a Quote
Your quote has been successfully submitted. You will receive an email within 24 hours with pricing and availability. Visit My Quotes Thank you!