Rev. 4691GSDECT08/04
Features
Local Oscillator Output Power: -6 dBm at 3.3 GHz
Supply-voltage Range 3 V to 4.6 V
Fast Settling Synthesizer
Supports Multiple Reference Clocks (10.368 MHz/13.824 MHz)
Benefits
Extended Battery Operating Time
Low Current Consumption
Very Small QFN32 5 mm
5 mm Package
Few Low Cost External Components
Electrostatic sensitive device.
Observe precautions for handling.
Description
The ATR2807 is an RF building block. It is used as a 3.344 GHz output frequency local
oscillator. The QFN32-packaged IC includes an LO buffer, synthesizer together with
fully integrated VCO and supply voltage regulators.
Figure 1. Block Diagram
Table 1. Functional Block Description
Name
Description
REG
Voltage regulator
CP
Charge pump
PLL
Phase locked loop
PA
Buffer amplifiers for LO_OUT
VCO
Voltage-controlled oscillator
VTUNE
VREG
VS
PLL
VS
VCO
VS
CP
REG
CTRL
VS
PA
PA
LO OUT 1
PLL
CLK
VCO
CP
REG
PU PA
PU VCO
PU REG
LO OUT 2
OLE
PU PLL
SW_CLK
CTRL
LOGIC
GND
PLL
GND
VCO
GND
CP
GND
PA
VS
REG
SET
REG
3.3 GHz
LO + PLL-chip
ATR2807
Summary
Preliminary
Note: This is a summary document. A complete document
is available under NDA. For more information, please con-
tact your local Atmel sales office.
Printed on recycled paper.
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4691GSDECT08/04
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