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PDF TEA6100 Data sheet ( Hoja de datos )
| Número de pieza | TEA6100 | |
| Descripción | FM/IF system and microcomputer-based tuning interface | |
| Fabricantes | NXP Semiconductors | |
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INTEGRATED CIRCUITS
DATA SHEET
TEA6100
FM/IF system and
microcomputer-based tuning
interface
Product specification
File under Integrated Circuits, IC01
August 1987
1 page  
Philips Semiconductors
FM/IF system and microcomputer-based
tuning interface
Product specification
TEA6100
PINNING
1 VP1
2 MUTE IN
3 LA OUT
4 RT/A IN
5 RT/A OUT
6 Fref
7 DGND
8 VP2
9 SCL
10 SDA
11 LF OUT
12 Q-DET
13 Q-DET
14 LADJ
15 Vref
16 FB DEC
17 FB DEC
18 INPUT 1
19 INPUT 2
20 AGND
analogue supply voltage
mute input
level amplifier output
rectifier/amplifier input
rectifier/amplifier output
reference frequency input
digital ground
digital supply voltage
serial clock line; I2C bus
serial data line; I2C bus
audio output signal
phase shift for quadrature
detector
phase shift for quadrature
detector
level amplifier adjustment
reference voltage
decoupled feedback
decoupled feedback
FM/AM IF input
AM/FM IF input
analogue ground
Fig.2 Pinning diagram.
FUNCTIONAL DESCRIPTION (see Figs 1 and 16)
The IF amplifier consists of four balanced limiting amplifier stages, two separate inputs (AM and FM) and one output.
Software programming (see Table 2; Figs 4 and 5) allows the input signals (AM/FM) to be inserted on either input (pin
18 or 19). The output drives the frequency counter and via the mute stage, drives the quadrature detector. The output of
the quadrature detector is applied to an audio stage (which has a single-ended output). The AM/FM level amplifier, which
is driven by 5 IF level detectors, generates a signal dependent d.c. voltage. The level output voltage is used internally to
control the mute stage and, if required, the signal can be used externally to control the stereo channel separation and
frequency response of a stereo decoder. The signal is also feed to the analogue-to-digital converter (ADC). Due to the
front-end spread in the amplification, the level voltage is made adjustable (LADJ, pin 14). The level voltage amplifier
controls the mute stage and this insures the −3 dB limiting point remains constant, independent of the front-end spread.
AM and FM mode have different front-end circuitry, therefore LADJ must be adjustable for both inputs.
The output voltage of the level amplifier is dependent upon the field strength of the input signal. The multi-path of the FM
signal exists in the AM modulation of the input signal. The following method is used to determine the level information
and the amount of multi-path (as a DC voltage):
• the IF level detector detects the multi-path and feds the signal, via the level amplifiers, to the external bandpass filter
(pin 3) and ADC1
• the signal is then fed to an internal rectifier
• the rectified signal is then fed to an amplifier, so at pin 5 the DC level information is externally available and internally
used by ADC2
In the FM mode, the DC information concerning the multi-path is available at pin 5 and the level information is available
at pin 3.
August 1987
5
5 Page 
Philips Semiconductors
FM/IF system and microcomputer-based
tuning interface
Product specification
TEA6100
Table 3 Possible window settings and counter resolutions with a 40 kHz reference frequency (see Figs 5 and 6)
POSITION OF
SWITCH
ADEFG
WINDOW (ms)
COUNTER
RESOLUTION
Hz / COUNT
IF
FREQUENCY
(kHz)
READ OUT BY
IF FREQUENCY
(HEX)
RANGE (kHz)
00000
10000
00001
10001
00100
10100
00101
10101
00010
10010
00011
10011
00110
10110
00111
10111
01000
11000
01001
11001
01100
11100
01101
11101
01010
11010
01011
11011
01110
11110
01111
11111
25,6
32,0
51,2
64,0
128,0
160,0
256,0
320,0
3,2
4,0
6,1
8,0
16,0
20,0
32,0
40,0
25,6
32,0
51,2
64,0
128,0
160,0
256,0
320,0
3,2
4,0
6,4
8,0
16,0
20,0
32,0
40,0
39,1
31,3
39,1
31,3
1000,0
800,0
1000,0
800,0
312,5
250,0
312,5
250,0
8000,0
6400,0
8000,0
6400,0
625,0
500,0
625,0
500,0
1000,0
800,0
1000,0
800,0
5000,0
4000,0
5000,0
4000,0
8000,0
6400,0
8000,0
6400,0
460,0
460,0
460,0
460,0
460,0
460,0
460,0
460,0
460,0
460,0
460,0
460,0
460,0
460,0
460,0
460,0
10700,0
10700,0
10700,0
10700,0
10700,0
10700,0
10700,0
10700,0
10700,0
10700,0
10700,0
10700,0
10700,0
10700,0
10700,0
10700,0
4F
CF
4F
CF
C3
36
C3
36
0F
7F
0F
7F
30
3F
30
3F
2F
E7
2F
E7
C3
36
C3
36
AB
C2
AB
C2
30
7F
30
7F
MIN.
MAX.
456,914 466,875
453,531 461,500
456,914 466,875
453,531 461,500
265,000 520,000
416,800 620,800
256,000 520,000
416,800 620,800
455,312 535,000
428,250 492,000
455,312 535,000
428,250 492,000
76,000 2116,000
56,800 1688,800
76,800 2116,000
56,800 1688,800
10670,625 10830,000
10584,500 10712,000
10670,625 10830,000
10584,000 10712,000
10505,000 10760,000
10656,800 10860,800
10505,000 10760,000
10656,800 10860,000
9845,000 11120,000
9924,000 10944,000
9845,000 11120,000
9924,000 10944,000
10316,000 12356,000
9887,200 11519,200
10316,000 12356,000
9887,200 11519,200
August 1987
11
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet TEA6100.PDF ] | |
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