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TEF6862 Datasheet(PDF) 2 Page - NXP Semiconductors

Part No. TEF6862
Description  Car Radio Enhanced Selectivity Tuner (CREST)
Download  65 Pages
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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TEF6862 Datasheet(HTML) 2 Page - NXP Semiconductors

 
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TEF6862_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 14 September 2006
2 of 65
Philips Semiconductors
TEF6862
Car Radio Enhanced Selectivity Tuner (CREST)
I AM front-end mixer for conversion of AM RF to an IF frequency of 10.7 MHz
I AM RF AGC circuit for external cascode AGC and PIN diode AGC
I AM noise blanker with detection at IF1 and blanking at IF2
I AM second mixer for conversion of IF1 10.7 MHz to IF2 450 kHz; IF2 AGC amplifier
and AM demodulator with low distortion
I For AM stereo applications the gain controlled AM IF2 output voltage can be switched
to MPXAM output pin via the I2C-bus
I Crystal oscillator providing frequency for second conversion, references for
synthesizer PLL and analog signal processor and timing for tuning action
I LC tuning oscillator with low phase noise and oscillator dividers with selectable divider
ratios for worldwide tuner reception without band switching in application
I Fast synthesizer PLL tuning system with dynamically adapting loop parameters
combining fast PLL frequency jumps for inaudible RDS updating with low spurious
responses for large signal-to-noise ratios
I Sequential state machine for preset change, search and inaudible AFU allowing a
timing uncritical microcontroller operation; the state machine generates timing signals
for the internal inaudible tuning mute and analog or digital signal processor
I An alternative frequency check can be initiated by the signal processor for audio
correlation algorithms directly without involvement of the microcontroller
I Audio soft slope tuning mute circuit allowing inaudible AFU
I Two hardware programmable I2C-bus addresses
I Two software controlled flag outputs
I Several test modes for fast IC and system tests
3.
Quick reference data
Table 1.
Quick reference data
VCCA = 8.5 V; Tamb =25 °C; see Figure 25 and Figure 26; all AC values are given in RMS; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Supply voltage
VCCA
analog supply voltage
on pins VCC, VCCPLL, VCCVCO,
VCCRF, AMMIX2OUT1, AMMIX2OUT2,
MIX1OUT1 and MIX1OUT2
8
8.5
9
V
Current in FM mode
ICC(tot)
total supply current
-
101.9
-
mA
Current in AM mode
ICC(tot)
total supply current
-
84.4
-
mA
Tuning system; see Table 37, Table 38 and Table 39
Timings
ttune
tuning time
Europe FM and US FM band;
fref = 100 kHz; fRF = 87.5 MHz to
108 MHz
-
0.75
1
ms
AM MW band; fref = 20 kHz;
fRF = 0.53 MHz to 1.7 MHz
--10
ms
tupd(AF)
AF update time
cycle time for inaudible AF update
including 1 ms mute start and 1 ms mute
release time
-
6
6.5
ms


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