S1S77100
Epson developed the S1S77100, an RF transmitter IC for wireless communication transmitters that supports certain frequencies in the ultra-high frequency (UHF) band. The frequencies, selectable via serial interface (SPI) control, can be set from 300 MHz to 465 MHz or from 600 MHz to 930 MHz.
A PLL*1 and power amp*2 are integrated into the 4 mm x 4 mm SQFN package, making it easy to configure wireless transmission functions with an external crystal oscillator. In addition, the low current consumption of 20 nA (typical) in PowerDown mode*3 makes it ideal for small wireless transmitters.
| Status | Download | Series name | Output frequency ranges | Output power | Modulation method |
Supply voltage range (V) |
Package | Operating temperature range |
|
|---|---|---|---|---|---|---|---|---|---|
 |
 |
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| MP |  1MB |
211KB |
S1S77100 | 300~465MHz(0.25 kHz Step) 600~930MHz(0.25 kHz Step) |
-15 to 11 dBm 128-step programmable |
ASK, OOK, FSK, and Soft-ASK and Soft-FSK functions to limit transmission bandwidth | 1.8 to 3.6 V | 4 mm x 4 mm SQFN-24pin (P-VQFN024-0404-0.50) |
-40 to +85 ℃ |
Main Applications
Wireless transmitters for things such as home security equipment, smart meters, restaurant bells, golf cart remote controllers.
Product Features
Selectable frequency range: 300-465 MHz or 600-930 MHz
Small package: 4 mm x 4 mm SQFN package (P-VQFN024-0404-0.50)
Low current consumption: 20 nA, typical, in PowerDown mode (VDD = 3.0 V, Ta = 25℃)
- *1:PLL: Abbreviation for phase locked loop, an electronic circuit that produces a desired output frequency to match a clock signal of a specific frequency
- *2:Power amp: A circuit that amplifies a signal, strengthening it for use in audio and wireless communications applications. Power amps need to be combined with a crystal oscillator.
- *3:PowerDown mode: In this product, PowerDown mode is a state in which only the minimum necessary circuits are operated so as to minimize current consumption
