ROHM series FM Transmitter chips
By SZ123 • 2010-04-11 • Category: Radio-Base • RSS 2.0 • Trackback •Features
- ROHM's wireless audio link ICs (FM transmitter) enable the smallest FM stereo broadcasts
- Compatible with billions of FM radio receivers around the world
- Removes noise contained in digital audio sources, resulting in hi-fi sound
- Built-in high-performance digital transmitter ensures stable transmission of broadcast waves
- A PLL circuit, stereo modulator, FM transmitter, and the like are all consolidated into a single package
- Conforms to the global standard GE Zenith (Pilot Tone) system
Hi-fi stereo sound that rivals that of a conventional broadcast station
Specialized, high-performance circuit designs make it possible to deliver high-fidelity sound equivalent to a radio station.
Application Examples
TVs, DVD players, Set top boxes, Portable music players, Wireless headphones, Wireless speakers, PCs, PC mice, PC peripheral equipment, Cordless phones, Coffee makers, Microwaves, Ovens, Mobile phones, Digital cameras, Gaming consoles, Battery chargers, Calculators, Personal data assistants, Clocks/watches, Illumination equipment, Student desks, Dressers, Bathtubs, Vending machines, ATMs, On-board music systems, Ticket vending machines, and more
Specifications
| Part No. | BH1425KN BH1425GWL |
BH1414K | BH1415F BH1415FV |
BH1418FV BH1418KN |
BH1416F | BH1417F BH1417FV |
| Power Supply Voltage | 2.7V to 4.0V | 4.5V to 5.5V | 4.0V to 6.0V | 2.7V to 4.0V | 4.0V to 6.0V | |
| BUS Interface Voltage | 1.7V to 4.0V | Same as the power supply voltage | Same as the power supply voltage | |||
| Operating Temperature Range | -20ºC to +85ºC | -40ºC to +85ºC | -40ºC to +85ºC | |||
| Package | VQFN28 (BH1425KN) UCSP50L3 ( BH1425GWL) |
QFP44 | SOP22 (BH1415F) SSOP-B24 ( BH1415FV) |
SSOP-B24 |
SOP22 | SOP22 (BH1417F) SSOP-B24 ( BH1417FV) |
| Transmission Frequencies | 76MHz to 108MHz step 100kHz |
76MHz to 108MHz step 100kHz |
76.8MHz to 78.0MHz 88.0MHz to 89.2MHz step 200kHz |
77.7MHz to 88.9MHz 106.7MHz to 107.9MHz step 200kHz |
||
| Transmission Output Level | -12dBm to 0dBm |
-7dBm | -7dBm | |||
| System Clock Frequencies | 12M,13M,16M, 19M,19.2M, 19.8M,24M, 26MHzOther |
7.6MHz | 7.6MHz | |||
| Audio input attenuator | Yes | Yes | - | - | ||
| Pre-emphasis | Yes | Yes | Yes | |||
| Audio limiter | Can be turned ON/OFF | Can be turned ON/OFF | ON only | ON only | ||
| Digital audio source input compatible filters | Yes | Yes |
-
|
- | ||
| Monaural operation | Yes | Yes | - | |||
| Audio mute | Yes | Yes | - | |||
| FM stereo modulator | Yes | Yes | Yes | |||
| FM transmitter | Yes | Yes | Yes | |||
| Transmission frequency control system | I2C BUS* | Three-line serial BUS | Parallel control | |||
| Transmission output level control | Yes | - | - | |||
| Characteristics adjustment function via BUS interface |
Yes
|
-
|
- | |||
| Zero current power-down mode |
Yes
|
-
|
- | |||
| *I2C BUS is a registered trademark of Philips. |
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