ASM3P2775AF-08TR datasheet, PDF

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ASM3P2775AF-08TR: DescriptionClock Generator, 30MHz, CMOS, PDSO8, ROHS COMPLIANT, TSSOP-8; CategoryThe embedded processor and controller Microcontrollers and processors; File Size393KB，11 Pages; ManufacturerPulseCore Semiconductor Corporation

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ASM3P2775AF-08TR Overview

Clock Generator, 30MHz, CMOS, PDSO8, ROHS COMPLIANT, TSSOP-8

ASM3P2775AF-08TR Parametric

Parameter Name	Attribute value
package instruction	ROHS COMPLIANT, TSSOP-8
Reach Compliance Code	unknown
JESD-30 code	R-PDSO-G8
length	4.4 mm
Number of terminals	8
Maximum operating temperature	70 °C
Minimum operating temperature
Maximum output clock frequency	30 MHz
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Master clock/crystal nominal frequency	30 MHz
Certification status	Not Qualified
Maximum seat height	1.1 mm
Maximum supply voltage	3.6 V
Minimum supply voltage	3 V
Nominal supply voltage	3.3 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	DUAL
width	3 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER
Base Number Matches	1

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ASM3P2775A

Low Power Peak EMI

Reducing Solution

Features

Generates an EMI optimized clock signal at the

output.

Integrated loop filter components.

Operates with a 3.3V Supply.

Operating current less than 4mA.

Low power CMOS design.

Input frequency range: 13MHz to 30MHz

Generates a 1X low EMI spread spectrum clock of

the input frequency.

Frequency deviation: ±1.8% (Typ) @14.7MHz Input

Frequency.

Available in 6-pin TSOT-23, 8-pin SOIC and 8-pin

TSSOP packages.

Commercial temperature range

The ASM3P2775A uses the most efficient and optimized

modulation profile approved by the FCC and is

implemented by using a proprietary all digital method.

The ASM3P2775A modulates the output of a single PLL

in order to “spread” the bandwidth of a synthesized clock,

and more importantly, decreases the peak amplitudes of

its harmonics. This results in significantly lower system

EMI compared to the typical narrow band signal produced

by oscillators and most frequency generators. Lowering

EMI by increasing a signal‟s bandwidth is called „spread

spectrum clock generation.‟

Applications

The ASM3P2775A is targeted towards all portable

devices with very low power requirements like MP3

players and digital still cameras.

Product Description

The ASM3P2775A is a versatile spread spectrum

frequency modulator designed specifically for a wide

range of clock frequencies. The ASM3P2775A reduces

electromagnetic interference (EMI) at the clock source,

allowing system wide reduction of EMI of all clock

dependent signals. The ASM3P2775A 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.

Key Specifications

Description

Supply voltage

Cycle-to-Cycle Jitter

Output Duty Cycle

Modulation Rate Equation

Frequency Deviation

Specification

VDD = 3.3V

0.3V

200pS (typ)

45/55% (worst case)

/640

±1.8% (Typ) @ 14.7MHz

Block Diagram

VDD

Modulation

XIN/CLKIN

XOUT

Crystal

Oscillator

Frequency

Divider

Feedback

Divider

PLL

Phase

Detector

Loop

Filter

VCO

Output

Divider

ModOUT

VSS

JANUARY 2010 – Rev. 1

Publication Order Number:

ASM3P2775/D

ASM3P2775AF-08TR Related Products

	ASM3P2775AF-08TR	ASM3P2775AG-08SR	ASM3P2775AF-08ST	ASM3P2775AG-08TR	ASM3P2775AF-06OR	ASM3P2775AG-06OR	ASM3P2775AF-08SR
Description	Clock Generator, 30MHz, CMOS, PDSO8, ROHS COMPLIANT, TSSOP-8	Clock Generator, 30MHz, CMOS, PDSO8, GREEN, SOIC-8	Clock Generator, 30MHz, CMOS, PDSO8, ROHS COMPLIANT, SOIC-8	Clock Generator, 30MHz, CMOS, PDSO8, GREEN, TSSOP-8	Clock Generator, 30MHz, CMOS, PDSO6, ROHS COMPLIANT, TSOT-23, 6 PIN	Clock Generator, 30MHz, CMOS, PDSO6, GREEN, TSOT-23, 6 PIN	Clock Generator, 30MHz, CMOS, PDSO8, ROHS COMPLIANT, SOIC-8
package instruction	ROHS COMPLIANT, TSSOP-8	GREEN, SOIC-8	ROHS COMPLIANT, SOIC-8	GREEN, TSSOP-8	ROHS COMPLIANT, TSOT-23, 6 PIN	GREEN, TSOT-23, 6 PIN	ROHS COMPLIANT, SOIC-8
Reach Compliance Code	unknown	unknown	unknown	unknown	unknown	unknown	unknown
JESD-30 code	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G6	R-PDSO-G6	R-PDSO-G8
length	4.4 mm	4.9 mm	4.9 mm	4.4 mm	2.9 mm	2.9 mm	4.9 mm
Number of terminals	8	8	8	8	6	6	8
Maximum operating temperature	70 °C	70 °C	70 °C	70 °C	70 °C	70 °C	70 °C
Maximum output clock frequency	30 MHz	30 MHz	30 MHz	30 MHz	30 MHz	30 MHz	30 MHz
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	TSSOP	SOP	SOP	TSSOP	VSSOP	VSSOP	SOP
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH	SMALL OUTLINE
Master clock/crystal nominal frequency	30 MHz	30 MHz	30 MHz	30 MHz	30 MHz	30 MHz	30 MHz
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.1 mm	1.75 mm	1.75 mm	1.1 mm	1 mm	1 mm	1.75 mm
Maximum supply voltage	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V
Minimum supply voltage	3 V	3 V	3 V	3 V	3 V	3 V	3 V
Nominal supply voltage	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V
surface mount	YES	YES	YES	YES	YES	YES	YES
technology	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Temperature level	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	0.65 mm	1.27 mm	1.27 mm	0.65 mm	0.95 mm	0.95 mm	1.27 mm
Terminal location	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL
width	3 mm	3.91 mm	3.91 mm	3 mm	1.6 mm	1.6 mm	3.91 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER
Base Number Matches	1	1	1	1	1	1	1

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