ATR2732 Datasheet PDF - ATMEL Corporation
| Part Number | ATR2732 | |
| Description | Integrated DAB One-chip Front End | |
| Manufacturers | ATMEL Corporation | |
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Features
• HighlwywIwn.tDegatraaStheedeDt4AUB.coFmront-end Solution Covering Band III and L-band Reception
• Convenient Internal Clock Generation, Single Reference Clock
• Fractional PLL for VHF
• Fully Integrated VCOs
• High-precision Digitally Tunable Reference Oscillator
• Integrated High-performance LNAs
• Very Flexible Programming of the AGC
• Automatically Aligned External Filter Tuning
• Simple Three-wire Digital Control Interface for Easy Handling
• Single Low Voltage (3.3V) Supply Operation
• Low Current Consumption Due to Several Power-down Options
• Small SMD Package (QFN 9 mm × 9 mm)
Applications
• Commercial DAB Receivers
• DAB Receiver Solutions for Car Radio Applications
• Portable DAB Solutions
1. Description
The ATR2732 is a front-end monolithic integrated circuit, manufactured using Atmel’s
silicon-germanium BiCMOS process (SiGMOS).
The ATR2732 carries out all functions of RF and IF processing, as well as the
clock-signal generation for these functions. Therefore, there is an integrated fractional
PLL, which, equivalent to most of the other functions, can be controlled via an external
digital bus. The RF functions include LNA, down-conversion mixing, amplifying, detec-
tion, and gain control. An external SAW filter is required in the signal path after the RF
functions. Additional amplifiers with detection and control functions are integrated IF
functions.
The device offers several tuning support functions, and was created to simplify the
design and manufacturing process. To this end, the number of external components
are minimal.
The part fits perfectly to Atmel’s DAB baseband processor ATR2740.
Figure 1-1. Block Diagram
Integrated DAB
One-chip Front
End
ATR2732
Preliminary
Summary
VCO
VCO
L-band
PLL
VHF
frac. PLL
Gain
cntl
Vtune
gen.
A
D
RSSI
PWR
cntl
Control unit
SPI interface
NOTE: This is a summary document.
The complete document is available
under NDA. For more information,
please contact your local Atmel sales
office.
4918AS–DAB–03/06
|
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ATR2732 [Preliminary]
This filter has an automatic tuner adjustment; that is, the tuning-voltage-generation block adjusts
www.DataSheet4U.com the pass band of this filter to the desired frequency. After passing this filter, the RF signal is
down-mixed to a fixed IF frequency of 38.912 MHz. The IF signal is amplified and passed to a
SAW filter (5). The first IF variable-gain amplifier is followed by an IF filter at position (6). This fil-
ter is used as an anti-alias-filter. Finally, the DAB signal is amplified using the 2nd IF amplifier.
The signal leaves the front-end IC at (7), giving the signal to the DAB baseband IC.
Figure 3-1. Functional Block Diagram with Labelled Inputs and Outputs
4) 5) 6)
3) 7)
1) Gain
cntl
2) Vtune
gen.
VCO
VCO
L-band
PLL
VHF
frac. PLL
A
D
RSSI
PWR
cntl
Control unit
SPI interface
4918AS–DAB–03/06
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for ATR2732 electronic component. |
| Information | Total 14 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ ATR2732.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| ATR2730 | The function is L-band Down-converter. ATMEL Corporation | |
| ATR2731 | The function is DAB One-chip Front End. ATMEL Corporation | |
| ATR2732 | The function is Integrated DAB One-chip Front End. ATMEL Corporation | |
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