Atmel ATR4262M1 User Manual

Features

• World Tuner Application Due to Integrated VCO Dividers

• RF Input for Weather Band Applications

• AM Reception 100 kHz Up to 30 MHz

• AM Up/Down Conversion Depending on Reception Frequency

• VCO Slave Mode for Phase Diversity Applications

• FM Image Rejection Mixer

• Selectable High-side/Low-side Injection for FM Mode

• Selectable FM Mixer Output

• RF-AGC Wideband Thre sh ol d Programmable for AM and FM

• RF-AGC Inband Threshold Programmable

• Cascode Control Voltage for AM FET Pre-stage

• Integrated Pin-diode Drivers for AM and FM

• Three Selectable IF Amplifier Inputs

• Fractional PLL with Fast Lock Time

• Small Frequency Steps for AM

• Excellent SNR for DRM Applications

• Differential Reference Frequency Input for PLL Down to 9 kHz or Integrated XCO Driver

Available

• Two Wire Interface (TWI) with Two Selectable Bus Addresses

• Digital Electronic Alignment of Up to Two External Filter Stages

• Flexible and Economic IF Filter Concept

• Control Inputs for IF Gain, Reception Frequency and Keyed AGC

• Integrated State-machine for Optional Control of Alternative Frequency Check

• Only One Power Supply Voltage Necessary

Broadcast Radio Front-end IC f or AM/FM/DRM/HD Radio

ATR4262M1

Summary

1. Description

The ATR4262M1 is a single-chip AM/FM and weather band tuner dedicated for digital IF solutions in car-radio applications. ATR4262M1 is produced using Atmel advanced BICMOS2S technology and fulfills the automotive requirements. This part is suitable for HD Radio allows to design high performance and cost optimized tuner solutions.

™

reception as well as for DRM solutions. The high flexibility

’s

Preliminary

NOTE: This is a summary document.

The complete document is available under NDA. For more information, please contact your local Atmel sales office.

4994BS–AUDR–05/08

2. Pin Configuration

Figure 2-1. Pinning QFN48

AMIN1 AMIN2

AMCVC

AMPIND

SW1

FMPIND

FMIN1

FMIN12

FMIN2

DAC1

DAC2

SW2

AMOUT1

AMOUT2

AMAGCTC1

FMOUT1

FMOUT2

VST

IFIN1

IFREF

IFIN2

VRT

48 47 46 45 44 43 42 41 40 39 38 37

1 2 3 4 5 6 7 8 9 10 11 12

13 14 15 16 17 18 19 20 21 22 23 24

FMAGCTC

ATR4262M1

KAGC

IFGCL

IFGCM

SCL

SDA

ENABLE

AFCC

VRVCO

VCOB

IFIN3

AMAGCT2

36 35 34 33 32 31 30 29 28 27 26 25

VCOE

GNDVCO

SW3 IFOUT1 IFOUT2 VSPLL REF1 REF2 VRPLL AMLF FMLF VTUNE GNDPLL VCOBUF

Table 2-1. Pin Description

Pin Symbol Function

1 AMIN1 AM mixer input 2 AMIN2 AM mixer input 3 AMCVC AM cascode voltage output 4 AMPIND AM pin diode output 5 SW1 SW1 switching output 6 FMPIND FM pin diode output 7 FMIN1 FM mixer input 1 8 FMIN12 FM mixer input 12

9 FMIN2 FM mixer input 2 10 DAC1 DAC tuning voltage output 1 11 DAC2 DAC tuning voltage output 2 12 SW2 SW2 switching output/external tuning voltage input 13 FMAGCTC RF AGC FM time constant 14 KAGC Keyed AGC input/SW7/lock detect/AFSAMPLE 15 IFGCL IF gain control LSB/SW4 16 IFGCM IF gain control MSB/SW5 17 ENABLE Control bus ENABLE/address select 18 SDA Two-wire control bus SDA 19 SCL Two-wire control bus SCL

ATR4262M1 [Preliminary]

4994BS–AUDR–05/08

Table 2-1. Pin Description

Pin Symbol Function

20 AFCC AFC control input/SW6 switching output/lock detect/AFHOLD 21 VRVCO Reference voltage VCO 22 VCOB VCO resonator (base) 23 VCOE VCO resonator (emitter) 24 GNDVCO VCO ground 25 VCOBUF VCO buffer output/input 26 GNDPLL PLL ground 27 VTUNE Tuning voltage output 28 FMLF PLL loopfilter FM 29 AMLF PLL loopfilter AM 30 VRPLL Reference voltage digital 31 REF2 RefClockInput2/crystal oscillator 32 REF1 RefClockInput1/crystal oscillator 33 VSPLL Supply voltage digital input 34 IFOUT2 IF output 2 35 IFOUT1 IF output 1 36 SW3 SW3 switching output/lock detect/AFSAMPLE 37 AMAGCTC2 RF AGC AM time constant 2 38 IFIN3 IF amplifier input 39 VRT Reference voltage tuner 40 IFIN2 IF amplifier input 41 IFREF IF reference voltage 42 IFIN1 IF amplifier input 43 VST Supply voltage tuner 44 FMOUT2 FM mixer output 45 FMOUT1 FM mixer output 46 AMAGCTC1 RF AGC AM time constant 1 47 AMOUT2 AM mixer output/FM Mixer Output 4 48 AMOUT1 AM mixer output/FM Mixer Output 3

Die pad GNDT_PAD Tuner RF and IF Ground

ATR4262M1 [Preliminary]

4994BS–AUDR–05/08

3. Absolute Maximum Ratings

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Parameters Pin Group Min. Max. Unit

Digital –0.5 +5.5 V

Supply –0.5 +12 V

Voltage references –0.5 +6.4 V

Voltage

Current Switches 0 2.7 mA Ambient temperature T Storage temperature T Junction temperature T Power dissipation P ESD HBM All pins –2 +2 kV ESD MM All pins –200 +200 V

SW1, SW3 –0.5 +12 V

SW2 –0.5 V

+ 0.5 V

SW4, SW5, SW6, SW7 –0.5 + 5.5 V

Mixer outputs –0.5 +16 V

Analog –0.5 V

amb

stg

1.4 W

tot

–40 +100 °C –40 +100 °C

+ 0.5 V

+150 °C

4. Thermal Resistance

Parameters Test Condition Symbol Value Unit

Thermal resistance junction-ambient Soldered to PCB R

thJA

30 K/W

5. Operating Range

Parameters Symbol Value Unit

Supply voltage V Supply voltage for operation of control bus

(data preservation in bus registers is guaranteed) Ambient temperature T

amb

8 to 10 V

7 to 10 V

–40 to +90 °C

ATR4262M1 [Preliminary]

4994BS–AUDR–05/08

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