Datasheet
TEA6848H
(Product Specification)
12-Nov-04, 63 pages, 400 kB
TEA6848H - New In Car Entertainment car radio tuner IC with Precision Adjacent Channel Suppression (NICE-PACS)
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General description
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Features
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Products/packages
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Quality/reliability/chemical content
- Pricing/ordering/availability
- Samples
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Discontinued information
- Applications
- Block diagrams/pinning
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Design support
- Parametrics/similar products
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Print/email
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Disclaimers
This product has been discontinued. Click here for discontinued information.All information hereunder is subject to the subsequent disclaimers
General description
The TEA6848H is a single IC with car radio tuner for AM,
FM and Weather Band (WB) 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 double conversion receiver with integrated image
rejection for IF1 and for IF2 capable of selecting US FM,
US weather, Europe FM, East Europe FM and
Japan FM bands; fully integrated dynamic selectivity at
450 kHz FM IF2; FM demodulator with dynamic
threshold extension; centre frequency alignment of IF2
selectivity via the I2C-bus
- The tuning system includes VCO, crystal oscillator and
PLL synthesizer on one chip.
Features
- FM mixer 1 for conversion of FM RF (65 to 108 MHz
and US weather band) to IF of 10.7 MHz; the mixer
provides inherent image rejection; for European and
US FM band/WB (weather band) the mixer is driven with
a 'high' injection Local Oscillator (LO); in Japan
FM band and East Europe FM band the mixer is driven
with a 'low' injection LO
- 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 FM 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, TEF689x)
- Digital alignment circuit for bus controlled matching of
oscillator tuning voltage to FM antenna tank circuit
tuning voltage
- 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 function for
search tuning; AGC threshold is a programmable and
keyed function switchable via the I2C-bus
- FM IF linear amplifier with high dynamic input range
- FM mixer 2 for conversion of FM IF1 to FM IF2 of
450 kHz with inherent image rejection
- Fully integrated dynamic selectivity and
FM demodulator at IF2; improved sensitivity with
dynamic threshold extension; centre frequency of IF2
selectivity alignment via the I2C-bus
- 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 cascode AGC stage and RF PIN diode drive circuit;
AGC threshold detection at AM mixer 1 and IF2 AGC
input; threshold for detection at mixer 1 input 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 detection at IF1 and blanking at
AM IF2
- Software controlled flag output
- Buffer output for weather band flag
- Adjacent channel detector, modulation detector and
frequency offset for instantaneous bandwidth control of
the integrated filter
- Flag and voltage output indicating the actual bandwidth
- I2C-bus alignment of centre frequency and gain variation
as functions of bandwidth of the IF2 filter and centre
frequency of the offset detector.
Products/packages
All type numbers in the table below are discontinued. See the table Discontinued information for more information.
| TEA6848H/V1 | TEA6848H/V1,518 | 9352 675 99518 | Discontinued
Replacement product | SOT315-1
(LQFP80)
| Reel Dry Pack, SMD, 13" | Standard Marking | |
| TEA6848H/V1 | TEA6848H/V1,557 | 9352 675 99557 | Discontinued
Replacement product | SOT315-1
(LQFP80)
| Tray Dry Pack, Bakeable, Multiple | Standard Marking | |
| TEA6848H/V1/S1 | TEA6848H/V1/S1,518 | 9352 723 63518 | Discontinued
Replacement product | SOT315-1
(LQFP80)
| Reel Dry Pack, SMD, 13" | Standard Marking | |
Discontinued information
| TEA6848H/V1 | 935267599518 | 31-mrt-10 | 30-jun-10 | TEA6848H/V1S | DN 64 | - Sole source product
- Standard availability
| ASSEMBLY APC Closure. Please refer to APCN 200905008A. Replacement type with new assembly location only. |
| TEA6848H/V1 | 935267599557 | 31-mrt-10 | 30-jun-10 | TEA6848H/V1S | DN 64 | - Sole source product
- Standard availability
| ASSEMBLY APC Closure. Please refer to APCN 200905008A. Replacement type with new assembly location only. |
| TEA6848H/V1/S1 | 935272363518 | 31-mrt-10 | 30-jun-10 | TEA6848H/V1S/S1 | DN 64 | - Sole source product
- Standard availability
| ASSEMBLY APC Closure. Please refer to APCN 200905008A. Replacement type with new assembly location only. |
Design support
Application Notes