ATR4252-EK Atmel, ATR4252-EK Datasheet
ATR4252-EK
Specifications of ATR4252-EK
Related parts for ATR4252-EK
ATR4252-EK Summary of contents
Page 1
... IC with several features. The device has built-in AGC's for both AM and FM, antenna detection, a power supply regulator as well as additional pre-integrated peripherals. The ATR4252 is based on BICMOS technology. The device is designed in particular for car application and is suitable for active antennas located in several positions on the car such as bumpers, windscreen, mirrors or windows. ...
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... ATR4252 2 Pinning VQFN 4x5 / 28L LNA LNA SOURCE 24 CASCODE FILTER 25 ATR4252 AM LNA OUT 26 AMBIAS 27 AMBUF Pin Description Symbol Function ANTENNA SENSE Antenna sense input VS FILTER Supply voltage filter input VSTART Comparator input of voltage detector OVDET Overvoltage detection input VREGO Output of voltage regulator ...
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... Reference voltage for AM LNA IN AM LNA IN AM LNA input terminal AM LNA SOURCE AM LNA source terminal CASCODE FILTER AM Cascode filter terminal AM LNA OUT AM LNA output terminal AMBIAS Reference voltage for AMBUF IN AMBUF IN AM Buffer amplifier input, impedance matching GND Ground paddle ATR4252 3 ...
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... Functional Description The ATR4252 is a highly integrated AM/FM antenna IC with lots of features and functions. In fact the most important feature is the impedance matching on both the antenna input and the cable. The ATR4252 compensates cable losses between the antenna (for example, windscreen, roof or bumper antennas) and the car radio, which is usually placed far away from the antenna ...
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... To reduce the cost of the external components, a current control for the time delay is integrated, so that only small external capacitor values are needed. The necessary driver for the external pin diode is already incorporated in the ATR4252 IC, which reduces the BOM cost and the application size. ...
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... FMPD opens an internal transistor, which controls the pin-diode current. By these means, the amplifier input signal is limited and therefore the FM amplifier is prevented from sig- nal overdrive. The necessary driver for the external pin diode is already incorporated in the ATR4252 IC, which reduces the BOM cost and the application size. 3.5 Supply Voltage Regulator The driving voltage for an external power transistor is provided by an integrated regulator circuit ...
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... VS, FMC, AM LNA OUT AM LNA IN AM/FM-OUT Antenna = 4 kHz Dummy Input AM/FM-OUT = 1 MHz + 1.1 MHz, = 110 dBµ MHz + 1.1 MHz, = 110 dBµV, AM DET AM DET FMC FMC FMC OUT FM OUT ATR4252 Symbol Min. Typ. Max AMLNAIN 9 V – 144 170 AMDET C 2 ...
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... Output voltage of Battery voltage 7.1 regulator V B Ripple rejection of 7.2 100 Hz, V regulator Notes: 1. AGC Loop deactivated 2. Measured with antenna dummy. 6. Ordering Information Extended Type Number ATR4252-RAPW ATR4252-RAQW ATR4252 25°C, unless otherwise specified S amb Pin FM OUT FM OUT FM OUT FMPD FM DET FM DET VS = 14V > ...
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... Side View Bottom View Package Drawing Contact: packagedrawings@atmel.com 9154AS–AUDR–09/ 10:1 b TITLE Package: VQFN_4x5_28L Exposed pad 2.6x3.6 ATR4252 technical drawings according to DIN specifications Dimensions in mm COMMON DIMENSIONS (Unit of Measure = mm) Symbol MIN NOM MAX NOTE A 0.8 0 0.0 0.02 0.05 A3 0.15 0.2 ...
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... Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’S TERMS AND CONDI- TIONS OF SALE LOCATED ON ATMEL’S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT ...