FM Transmitters

Wireless Audio Link ICs

ROHM's breakthrough wireless IC series incorporates a stereo modulator, frequency synthesizer and high frequency FM transmitter in one IC.
ROHM's industry-first wireless IC series not only cuts board space by more than half, it opens up opportunities as unlimited as the designer's imagination. ROHM's innovative chip series enables portable electronic audio sources such as MP3 players, portable CD players, PDAs, video game players, cell phones, and laptop PCs to be connected to a more powerful audio system without cables or even line of sight technology.

Digi-Key Part Number	Package	Freqency	Voltage Supply (Min-Max)	Features
BH1415F-E2TR-ND	22-SOP	70MHz ~ 120MHz	4.00 V - 6.00 V	FM Stereo Transmitter IC
BH1417F-E2TR-ND	22-SOP	87.7MHz ~ 88.9MHz 106.7MHz ~ 107.9MHz	4.00 V - 6.00 V	FM Stereo Transmitter IC
BH1414K-E2TR-ND	44-QFP	75MHz ~ 110MHz	4.50 V - 6.50 V	FM Stereo Transmitter IC
BH1418FV-E2TR-ND	24-SSOP	70MHz ~ 120MHz	2.70 V - 4.00 V	FM Stereo Transmitter IC
BH1418KN-E2TR-ND	28-VQFN	70MHz ~ 120MHz	2.70 V - 4.00 V	FM Stereo Transmitter IC
BH1425KN-E2TR-ND	28-VQFN	76MHz ~ 108MHz	2.70 V - 4.00 V	FM Stereo Transmitter IC
BH1425GWL-E2TR-ND	UCSP50L	76MHz ~ 108MHz	2.70 V - 4.00 V	FM Stereo Transmitter IC


FEATURES

	•	Mounting apace ≤ 56mm²
	•	Adjust audio input level by built-in input volume via BUS
	•	Select pre-emphasis time constant via BUS
	•	High-end LPF for Digital Audio Source
	•	Adjust deviation control function via BUS
	•	Tx frequency: 76.0M ~ 108.0MHz, 100kHz step
	•	High-speed transmission frequency setup < 200msec
	•	Adjust Tx power control function via BUS
	•	Power down mode
	•	External clock frequency are 13M/16M/19.2M/19.8M/26MHz
	•	I²C BUS I/F
	•	Operating Voltage: 2.7V to 3.6V
	•	BUS I/F power voltage: 1.7V to 3.6V
	•	Smaller package: CSP 3.0mm x 3.0mm x 0.5mm


APPLICATIONS

	•	Wireless speakers
	•	Car entertainment systems
	•	Computer (sound board)
	•	MP3 players
	•	Video game players
	•	CD changers
	•	GPS Systems
	•	Cell phones & Fax machines