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TEA6845H
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
TEA6845H
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
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We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.
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Shipping & Payment
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Service & Packaging
Service & Packaging
About After Sales Service
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TEA6845H DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
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.
Key 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.
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| 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 |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
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