ASM3P2474A

Features:

Generates an EMI optimized clock signal at the output. 
Integrated loop filter components.
Operates with a 3.3V Supply.  
Operating current less than 6mA.  
Low power CMOS design.  
Input frequency range : 13MHz to 30MHz  
Generates a 1X and 2X low EMI spread spectrum
   clock of the input frequency. 
Output Frequency Selection through FSEL pin  
Frequency deviation :  -1.5% (Typ) @25MHz 
                                    :  -1.5% (Typ) @50MHz     
Available in 6-pin TSOT-23, 8-pin SOIC and 8-pin TSSOP packages. 

Application

The ASM3P2474A is targeted towards all portable devices with very low power requirements like MP3 players and digital still cameras.


Pinout




Specifications

Symbol	Parameter	Rating	Unit
VDD,VIN	Voltage on any pin with respect to Ground	-0.5 to +7.0	V
TSTG	Storage temperature	-65 to +125	°C
TA	Operating temperature	0 to 70	°C
Ts	Max.Soldering Temperature (10 sec)	260	°C
TJ	Junction Temperature	150	°C
TDV	Static Discharge Voltage (As per JEDEC STD22- A114-B)	2	KV
Note: These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect device reliability.

Description

The ASM3P2474A is a versatile spread spectrum frequency modulator designed specifically for a wide range of clock frequencies. That reduces electromagnetic interference (EMI) at the clock source, allowing system wide reduction of EMI of  all clock dependent signals. The ASM3P2474A allows significant system cost savings by reducing the number of circuit board layers, ferrite beads and shielding that are traditionally required to pass EMI regulations.

The ASM3P2474A uses the most efficient and optimized modulation profile approved by the FCC and is implemented by using a proprietary all digital method.