P280GR, P281 Y, P2811 Selling Leads, Datasheet
MFG:TOSHIBA Package Cooled:SOP4 D/C:08+
P280GR, P281 Y, P2811 Datasheet download
Part Number: P280GR
MFG: TOSHIBA
Package Cooled: SOP4
D/C: 08+
P280GR, P281 Y, P2811
- Table of contents:
Info of P280GR
Info of P281 Y
Info of P2811
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About P280
PDF/DataSheet Download
Datasheet: P280
File Size: 1222611 KB
Manufacturer:
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About P280
PDF/DataSheet Download
Datasheet: P280
File Size: 1222611 KB
Manufacturer:
Download : Click here to Download
About P2811
PDF/DataSheet Download
Datasheet: P2811
File Size: 391531 KB
Manufacturer: ALSC [Alliance Semiconductor Corporation]
Download : Click here to Download
P2811 General Description
The P28xx is a versatile spread spectrum frequency modulator designed specifically for input clock frequencies from 10 to 40 MHz (see Input/Output Frequency Range Selections). The P28xx can generate an EMI reduced clock from crystal, ceramic resonator, or system clock. The P28xx-A and P28xx-B offer various combinations of spread options and percentage deviations (see Output Frequency Deviation and Spread Option Selections section). These combinations include Down Spread, Center Spread and percentage deviation range from ±0.625% to -3.50%.
The P28xx reduces electromagnetic interference (EMI) at the clock source, allowing a system wide EMI reduction for
all the down stream clocks and data dependent signals. The P28xx allows significant system cost savings by reducing the number of circuit board layers, ferrite beads, shielding, and other passive components that are traditionally required to pass EMI regulations.
P2811 Maximum Ratings
Symbol Parameter Rating Unit
VDD, VIN Voltage on any pin with respect to GND -0.5 to + 7.0 V
TSTG Storage temperatur -65 to +125 °C
TA Operating temperature 0 to 70 °C
VDD, VIN Voltage on any pin with respect to GND -0.5 to + 7.0 V
TSTG Storage temperatur -65 to +125 °C
TA Operating temperature 0 to 70 °C
P2811 Features
FCC approved method of EMI attenuation
Provides up to 15 dB EMI reduction
Generates 1X, 2X, and 4X low EMI spread spectrum clock of the input frequency
1X: P2811, 2X: P2812, 4X: P2814
Optimized for input frequency range from 10 to 40 MHz P2811: 10 to 40 MHz P2812: 10 to 40 MHz P2814: 10 to 40 MHz
Internal loop filter minimizes external components and board space
Selectable spread options: Down Spread and Center Spread
Low inherent cycle-to-cycle jitter
Eight spread % selections: ±0.625% to 3.5%
3.3 V operating voltage
CMOS/TTL compatible inputs and outputs
Pinout compatible with Cypress CY25811, CY25812, and CY25814
Products available for industrial temperature range
Available in 8-pin SOIC and TSSOP
Provides up to 15 dB EMI reduction
Generates 1X, 2X, and 4X low EMI spread spectrum clock of the input frequency
1X: P2811, 2X: P2812, 4X: P2814
Optimized for input frequency range from 10 to 40 MHz P2811: 10 to 40 MHz P2812: 10 to 40 MHz P2814: 10 to 40 MHz
Internal loop filter minimizes external components and board space
Selectable spread options: Down Spread and Center Spread
Low inherent cycle-to-cycle jitter
Eight spread % selections: ±0.625% to 3.5%
3.3 V operating voltage
CMOS/TTL compatible inputs and outputs
Pinout compatible with Cypress CY25811, CY25812, and CY25814
Products available for industrial temperature range
Available in 8-pin SOIC and TSSOP
P2811 Typical Application
The P28xx is targeted towards EMI management for memory interfaces in mobile graphic chipsets and highspeed digital applications such as PC peripheral devices, consumer electronics, and embedded controller systems.
P2811 Connection Diagram
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