TEA6845H

有效庫存3,952

The TEA6845H is a compact IC receiver for AM and FM radio signals, encapsulated in a PQFP64 package that is 14 x 20 mm in size and 2.80 mm in height

  • 製造商零件號 # : TEA6845H

  • 包裝/封裝: QFP64

  • 製造商: NXP

  • 產品分類 : Display Drivers

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TEA6845H 數據表

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詳細說明

GENERAL DESCRIPTIONThe TEA6845H is a single IC with car radio tuner for AM and FM intended for microcontroller tuning with the I2C-bus. It provides the following functions:• AM double conversion receiver for LW, MW and 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.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 of 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 of 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 ICs• 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 or TEF689x)• Digital auto 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 or 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.

主要特徵

  • 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 of 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 of 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 ICs
  • 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 or TEF689x)
  • Digital auto 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 or 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.

規格

以下是所選零件的基本參數,涉及零件的特性及其所屬類別。

Pbfree Code Yes Rohs Code Yes
Part Life Cycle Code Obsolete Part Package Code QFP
Pin Count ! 64 Reach Compliance Code
HTS Code ! 8542.39.00.01 Consumer IC Type AUDIO SINGLE CHIP RECEIVER
Demodulation Type AM/FM Harmonic Distortion 1.75%
JESD-30 Code R-PQFP-G64 JESD-609 Code e3
Length 20 mm Number of Functions 1
Number of Terminals 64 Operating Temperature-Max 85 °C
Operating Temperature-Min -40 °C Output Voltage-Nom (FM) 290 mV
Package Body Material PLASTIC/EPOXY Package Code QFP
Package Shape RECTANGULAR Package Style FLATPACK
Qualification Status ! Not Qualified Seated Height-Max 3.2 mm
Supply Current-Max 95 mA Supply Voltage-Max (Vsup) 5.25 V
Supply Voltage-Min (Vsup) 4.75 V Surface Mount ! YES
Temperature Grade ! INDUSTRIAL Terminal Finish MATTE TIN
Terminal Form ! GULL WING Terminal Pitch ! 1 mm
Terminal Position QUAD Width 14 mm

數據表 PDF

數據表記錄了器件的特性、絕對最大額定值、應用等,這對於作為器件特定應用的整體指南大有裨益。

初步規格 TEA6845H PDF 下載

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