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ATR2730 fiches techniques PDF

ATMEL Corporation - L-band Down-converter

Numéro de référence ATR2730
Description L-band Down-converter
Fabricant ATMEL Corporation 
Logo ATMEL Corporation 





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ATR2730 fiche technique
Features
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RF Frequency Range: 1400 MHz to 1550 MHz
IF Frequency Range: 150 MHz to 250 MHz
Enhanced IM3 Rejection
Overall Gain Control Range: 30 dB Typically
DSB Noise Figure: 10 dB
Gain-controlled Amplifier and L-band Mixer
Power-down Function for the Analog Part
On-chip Gain-control Circuitry
On-chip VCO, Typical Frequency 1261.568 MHz
Internal VCO Can Be Overdriven by an External LO
On-chip Frequency Synthesizer
– Fixed LO Divider Factor: 2464
– Nine Selectable Reference Divider Factors: 32, 33, 35, 36, 48, 49, 63, 64, 65
– A Reference Oscillator (Can Be Overdriven by an External Reference Signal)
– Tri-state Phase Detector with Programmable Charge Pump
– Programmable Deactivation of Tuning Output
– Lock-status Indication
– Test Interface
1. Description
The ATR2730 is a monolithically integrated L-band down-converter circuit fabricated
with Atmel®’s advanced UHF5S technology. This IC covers all functions of an L-band
down-converter in a DAB receiver. The device includes a gain-controlled amplifier, a
gain-controlled mixer, an output buffer, a gain control block, a power-save function for
the analog part, an L-band oscillator, and a complete frequency synthesizer unit. The
frequency synthesizer block consists of a reference oscillator/buffer, a reference
divider, an RF divider, a tri-state phase detector, a loop filter amplifier, a lock detector,
a programmable charge pump, a test interface, and a control interface.
L-band
Down-converter
for DAB
Receivers
ATR2730
Preliminary
4903C–DAB–03/07

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