Epson SR3225SAA, Applications Manual, Page: 5 / 57

SR3225SAA
Page - 1 ETM54E-07
1. Overview
RF transmitter module SR3225SAA is a wireless transmitter module for the UHF range. This module houses a
crystal resonator, capacitors for an oscillation circuit, a PLL, and a Power Amp in a 3.2 mm x 2.5 mm ceramic
package. The crystal resonator is optimally matched with the IC at the factory. The SR3225SAA is ideal for small
wireless transmitters because wireless transmission can be achieved simply by combining it with an external
controller.
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Output frequency range: 300 MHz to 465 MHz (0.25 kHz Step), 600 MHz to 930 MHz (0.49 kHz Step)
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Δ-Σ fractional-N PLL
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Programmable power amplifier (PA) output power: -15 dBm to 1dBm, -5 dBm to 11 dBm for each 64 steps
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Modulation types: ASK/OOK/FSK with Soft-ASK and/or Soft FSK shaping
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Multi-channel (up to 4 channels), channel hopping capability
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3-wire/4-wire SPI interface for Special Function Register (SFR)
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SFR (Special Function Register)
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Fail-safe mechanism (PLL Loss of Lock: LOL, VCO auto-calibration error, Under Voltage Detection: UVD)
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Embedded 32 MHz crystal resonator and crystal oscillation circuit
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Synchronous transmission mode with crystal clock
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Programmable clock output via CKOUT
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Programmable voltage threshold of Under Voltage Detection (UVD): 4 step (1.8 V to 2.4 V)
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10-pin ceramic 3.2 mm x 2.5 mm package
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Supply voltage 1.8 V to 3.6 V
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Operating temperature: -40°C to +85°C
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Pb-free/RoHS-compliant