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TEA6840H

Features: · FM mixer for conversion of FM RF from 65 to 108 MHz to IF of 10.7 MHz; the mixer provides inherent image rejection· FM RF mixer can be set to receive weather band radio up to 162.55 MHz; weather band radio flag output · AM mixer 1 for conversion of AM RF to AM IF1 10.7 MHz· LC tuner os...

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SeekIC No. : 004517398 Detail

TEA6840H: Features: · FM mixer for conversion of FM RF from 65 to 108 MHz to IF of 10.7 MHz; the mixer provides inherent image rejection· FM RF mixer can be set to receive weather band radio up to 162.55 MHz;...

TEA6840H Data Sheet

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Part Number:
TEA6840H
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

· FM mixer for conversion of FM RF from 65 to 108 MHz to IF of 10.7 MHz; the mixer provides inherent image rejection
· FM RF mixer can be set to receive weather band radio up to 162.55 MHz; weather band radio flag output
· AM mixer 1 for conversion of AM RF to AM IF1 10.7 MHz
· LC tuner oscillator providing mixer frequencies for FM mixer and AM mixer 1
· AM mixer 2 for conversion of AM IF1 to AM IF2 450 kHz
· Crystal oscillator providing mixer frequencies for AM mixer 2 and reference for synthesizer PLL, IF count, timing for Radio Data System (RDS) update and reference frequency for car audio signal processor IC
· Fast synthesizer PLL tuning system with local control for inaudible RDS updating
· Timing function for RDS update algorithm and control signal output for car audio signal processor ICs (TEA688x, SAA77xx)
· Digital alignment circuit for conversion of LC oscillator tuning voltage to controlled alignment voltage of FM antenna tank circuit
· AGC pin diode drive circuit for FM RF AGC; AGC detection at FM mixer input; the AGC pin diode drive can be activated by the I2C-bus as a local/distance function; AGC threshold is a programmable and keyed function switchable via the I2C-bus
· FM IF linear amplifiers with high dynamic input range
· FM quadrature demodulator with automatic centre frequency adjustment and Total Harmonic Distortion (THD) compensation
· Level detector for AM and FM with temperature compensated output voltage; starting point and slope of level output is programmable via the I2C-bus
· AM RF pin diode drive circuit; AGC threshold detection at AM mixer 1 and IF2 AGC input; threshold is programmable via the I2C-bus; AM IF2 AGC and demodulator
· AM AF output switchable to provide AM IF2 for AM stereo decoder
· AM noise blanker with blanking at AM IF2
· Several test modes available for fast IC and system tests.



Pinout

Connection Diagram


Specifications

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
VDDA1 analog supply voltage 1 for on-chip power supply   -0.3 +10 V
VDDA2 analog supply voltage 2 for on-chip power supply   -0.3 +6.5 V
VDDA4 analog supply voltage 4 for tuning PLL   -0.3 +10 V
VDDA5 analog supply voltage 5 for on-chip power supply   -0.3 +10 V
VDDA6 analog supply voltage 6 for 1st IF amplifier   -0.3 +10 V
VDDA7 analog supply voltage 7 for 2nd IF amplifier   -0.3 +10 V
VDDD digital supply voltage   -0.3 +6.5 V
Tstg storage temperature   -55 +150
Tamb operating ambient temperature   -40 +85
Ves electrostatic handling note 2 -200 +200 V
note 3 -2000 +2000 V



Description

The TEA6840H is a single chip car radio tuner for AM and FM intended for microcontroller tuning with the I2C-bus providing the following functions:

· AM double conversion receiver for LW/MW/SW (31 m, 41 m and 49 m bands) with IF1 = 10.7 MHz and IF2 = 450 kHz

· FM single conversion receiver with integrated image rejection for IF = 10.7 MHz capable of selecting US FM, US weather, Europe FM, East Europe FM and Japan FM bands.




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