The MAX2360 dual-band, triple-mode complete transmitter for cellular phones represents the most integrated and architecturally advanced solution to date for this application. The device takes a differential I/Q baseband input and mixes it up to IF through a quadrature modulator and IF variable-gain amplifier (VGA). The signal is then routed to an external bandpass filter and upconverted to RF through an SSB mixer and RF VGA. The signal is further amplified with an on-board PA driver. Dual IF synthesizers, dual RF synthesizers, a local oscillator (LO) buffer, and a 3-wire programmable bus complete the basic functional blocks of this IC. The MAX2362 supports single-band, single-mode (PCS) operation. The MAX2364 supports single-band cellular dual-mode operation.
The MAX2360 enables architectural flexibility because its two IF voltage-controlled oscillators (VCOs), two IF ports, two RF LO input ports, and three PA driver output ports allow the use of a single receive IF frequency and split-band PCS filters for optimum out-of-band noise performance. The PA drivers allow up to three RF SAW filters to be eliminated. Select a mode of operation by loading data on the SPI/QSPI/MICROWIRE-compatible 3-wire serial bus. Charge-pump current, sideband rejection, IF/RF gain balancing, standby, and shutdown are also controlled with the serial interface.
The MAX2360/MAX2362/MAX2364 come in a 48-pin TQFP-EP package and are specified for the extended (-40°C to +85°C) temperature range.
Dual-Band, Triple-Mode Operation
+7dBm Output Power with -54dBc ACPR
100dB Power Control Range
Supply Current Drops as Output Power Is Reduced
Dual Synthesizer for IF and RF LO
Dual On-chip IF VCO
QSPI/SPI/MICROWIRE-Compatible 3-Wire Bus
Digitally Controlled Operational Modes
+2.7V to +5.5V Operation
Single Sideband Upconverter Eliminates SAW Filters
High-Speed Data Modems
High-Speed Digital Cordless Phones
Triple-Mode, Dual-Mode, or Single-Mode Mobile Phones
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