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U2781B

Features: Very low current consumption (typ. 3 V/ 5 mA) Supply-voltage range: 2.7 to 5.5 V Max. input frequency: 1.1 GHz Programmable prescaler 64/ 65 or 128/ 129 Controlled by 3-wire bus with fclock up to 500 kHz Status output for PLL lock/ unlock condition Very fast phase detector SSO20 package...

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U2781B: Features: Very low current consumption (typ. 3 V/ 5 mA) Supply-voltage range: 2.7 to 5.5 V Max. input frequency: 1.1 GHz Programmable prescaler 64/ 65 or 128/ 129 Controlled by 3-wire bus with fclo...

U2781B Data Sheet

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Part Number:
U2781B
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

  Very low current consumption (typ. 3 V/ 5 mA)
  Supply-voltage range: 2.7 to 5.5 V
  Max. input frequency: 1.1 GHz
  Programmable prescaler  64/ 65 or 128/ 129
  Controlled by 3-wire bus with fclock up to 500 kHz
  Status output for PLL lock/ unlock condition
  Very fast phase detector
  SSO20 package
  ESD protection in accordance with MIL-STD. 883method 3015 class 2


Pinout

Connection Diagram


Specifications

Parameter

Symbol

Value

Unit

Supply voltage

VS

0.3 to 6

V

RF input

VRF

VS

V

Oscillator input voltage

VOsci

1

V

Oscillator output voltage

VOsco

1.5

V

Bus input voltage

VBUS

6

V

Phase-select input voltage

VPS

6

V

Charge-pump input voltage

VSCP

6

V

Storage temperature

Tstg

40 to 125

°C




Description

The programmable frequency synthesizer IC U2781B forµP-controlled applications is realized with AtmelWireless & Microcontrollers' advanced UHF processwhich is very suitable for combinations of fast ECL logicand low-current I2L logic. The benefits are high inputsensitivity combined with low power consumption andtherefore small packages (SSO20). This makes  the U2781B a perfect choice for cordless phones and handheldcellular radio sets up to 1.1 GHz.

Electrostatic sensitive device.

Observe precautions for handling.




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