Wireless Audio Link ICs for FM Transmitters

Audio ICs

ROHM's wireless audio link ICs transmit music (i.e. CDs) via FM waves to an FM tuner, enabling high-quality playback. Features include built-in pre-emphasis, limiter, LPF, and stereo modulation circuits as well as a PLL frequency synthesizer, making audio FM transmission possible - all on a single chip.

Chip size / Small size Wireless Audio Link

Part No.	Supply voltage （V）	Transmitting frequency	Interface	Transmission output level (dBm)	Package	RoHS
NEW BH1425KN	2.7 to 4.0	76 to 108MHz step 100kHz	I²C^*	-12 to 0	VQFN28	Yes
NEW BH1425GWL	2.7 to 4.0	76 to 108MHz step 100kHz	I²C^*	-12 to 0	UCSP50L3 （3.06×3.06） H=0.55Max.	Yes
NEW BH1426KN	2.7 to 3.6	76 to 108MHz step 100kHz	I²C^*	-9 to +3	VQFN28	Yes
NEW BH1426GWL	2.7 to 3.6	76 to 108MHz step 100kHz	I²C^*	-9 to +3	UCSP50L3 （3.06×3.06) H=0.55Max.	Yes
NEW BH1427GUL	2.7 to 3.6	76 to 108MHz step 100kHz	I²C^*	-9 to +3	VCSP50L3 （3.1×3.1） H=0.55Max.	Yes
NEW BH1428MUV	2.7 to 3.6	76 to 108MHz step 100kHz	I²C^*	-9 to +3	UQFN028V5050	Yes
☆BH1428GUL	2.7 to 3.6	76 to 108MHz step 100kHz	I²C^*	-9 to +3	VCSP50L3 （3.1×3.1） H=0.55Max.	Yes

☆ : Under development

*I²C BUS is a registered trademark of Philips.

Wireless Audio Link with RDS

Part No.	Supply voltage （V）	Transmitting frequency	Interface	Transmission output level (dBm)	Package	RoHS
☆BU2682MUV	2.7 to 3.6	76 to 108MHz step 100kHz	I²C^*	-14 to +9	UQFN028V5050	Yes
☆BU2682GWL	2.7 to 3.6	76 to 108MHz step 100kHz	I²C^*	-14 to +9	UCSP50L2 （2.8×2.8） H=0.55Max.	Yes

☆ : Under development

*I²C BUS is a registered trademark of Philips.

3V standard Wireless Audio Link

Part No.	Supply voltage （V）	Transmitting frequency	Interface	Transmission output level (dBm)	Package	RoHS
NEW BH1411FV	2.7 to 4.0	76 to 90MHz, 87.5 to 108MHz step 100kHz, 88.1 to 94.1MHz, 101.9 to 107.9MHz step 400kHz	I²C^*,3-wire Serial 5bit Parallel	-7	SSOP-B24	Yes
NEW BH1411MUV	2.7 to 4.0	76 to 90MHz, 87.5 to 108MHz step 100kHz, 88.1 to 94.1MHz, 101.9 to 107.9MHz step 400kHz	I²C^*,3-wire Serial 5bit Parallel	-7	VQFN024V4040	Yes
NEW BH1412FV	2.7 to 4.0	88.1 to 94.1MHz, 101.9 to 107.9MHz step 400kHz	5bit Parallel	-7	SSOP-B24	Yes
BH1418FV	2.7 to 4.0	76 to 90MHz, 87.5 to 108MHz step 100kHz	3-wire Serial	-7	SSOP-B24	Yes
BH1418KN	2.7 to 4.0	76 to 90MHz, 87.5 to 108MHz step 100kHz	3-wire Serial	-7	VQFN28	Yes

5V standard Wireless Audio Link

Part No.	Supply voltage （V）	Transmitting frequency	Interface	Transmission output level (dBm)	Package	RoHS
BH1414K	4.5 to 5.5	76 to 90MHz, 87.5 to 108MHz step 100kHz	3-wire Serial	-20	QFP44	Yes
BH1415F	4.0 to 6.0	76 to 108MHz step 100kHz	3-wire Serial	-7	SOP22	Yes
BH1415FV	4.0 to 6.0	76 to 108MHz step 100kHz	3-wire Serial	-7	SSOP-B24	Yes
BH1416F	4.0 to 6.0	76.8 to 78.0MHz, 88.0 to 89.2MHz step 200kHz	4bit Parallel	-7	SOP22	Yes
BH1417F	4.0 to 6.0	87.7 to 88.9MHz, 106.7 to 107.9MHz step 200kHz	4bit Parallel	-7	SOP22	Yes
BH1417FV	4.0 to 6.0	87.7 to 88.9MHz, 106.7 to 107.9MHz step 200kHz	4bit Parallel	-7	SSOP-B24	Yes