Cyf4455b Sot23-6 300MHz to 450MHz Integrated Circuit Wireless RF Transmitter Chip IC

• Conductive Type: Unipolar Integrated Circuit
• Integration: GSI
• Shape: DIP
• Frequency: 300MHz ~ 450MHz
• Power: 14dBm
• Data Rate: up to 10kbps
• Model NO.: CYF4455B
• Current: 13mA
• Voltage: 2.0~3.6V
• Ambient Temperature: -20° C to 70° C
• Packaging: Sot23-6
• Lead Time: 3 Weeks After Receiving Payment
• Ship by: DHL/FedEx/UPS
• MOQ: 100PCS
• Transport Package: Reel
• Trademark: CY
• Origin: China
• HS Code: 8542399000
• Production Capacity: 200000PCS/Year

Product Description

General Description

CYF4455B is a high-performance, easy-to-use single-chip ASK transmitter IC, suitable for long-range wireless applications in the 300-450MHz frequency band. This chip is a monolithic device that can truly achieve "data input, antenna output". CYF4455B has three powerful attributes: power output, working voltage and working temperature. CYF4455B can provide +14dBm for 50Ω load. This power level allows small transmitters (lossy antennas), such as key fob transmitters, to operate near the maximum limits of the transmission rules. 2.0V to 3.6V operating voltage, CYF4455B can be used with most batteries, reaching the limit of its use range. The operating temperature range is -20°C to +70°C.

CYF4455B is easy to use. It only requires some additional external components and a crystal to generate a reference frequency (RF carrier frequency divided by 32 times), which is enough to create a complete multi-function transmitter.

CYF4455B adopts ASK / OOK (Amplitude Shift Keying/On-Off Keying) UHF receiver type, ranging from broadband super-regenerative radios to narrow-band high-performance super-heterodyne receivers. The maximum ASK data rate of is 10kbps (Manchester encoding).

CYF4455B transmitter solution is very suitable for simple and important industrial and consumer applications.

CYF4455B has a power management function. This function can activate the transmitter as long as it receives a high transient data input trigger signal. If there is no data input transient for more than about 75ms, the transmitter will automatically shut down.



 Features

1. Complete UHF transmitter;
2. 300MHz to 450MHz frequency range;
3. ASK modulation data rate up to 10kbps;
4. Output power reaches +14dBm;
5. Few external parts needed;
6. Low voltage operation (down to 2.0V);
7. Use crystal or ceramic resonator;
8. Power-down mode and wake-up function to reduce power consumption
9. Packaging: SOT23-6

Applications

1. Fan controller
2. Remote power switch
3. Multimedia remote control
4. Remote sensor data link
5. Infrared transmitter replacement

Pin Configuration

Pin Description

Pin Name	I/O	Description	Pin NO.
VSS	G	Ground	1
VSS	G	Ground	2
PAOUT	O	Power output	3
ASK	I	ASK data input	4
VDD	P	Power supply	5
XTIN	I	Crystal oscillator input	6