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PDF TEA6850 Data sheet ( Hoja de datos )
| Número de pieza | TEA6850 | |
| Descripción | IF filter / amplifier / demodulator for FM radio receivers | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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INTEGRATED CIRCUITS
DATA SHEET
TEA6850
IF filter / amplifier / demodulator for
FM radio receivers
Preliminary specification
File under Integrated Circuits, IC01
July 1994
1 page  
Philips Semiconductors
IF filter / amplifier / demodulator for FM
radio receivers
PINNING
SYMBOL
RDSOUT
CENABLE
MPXIN
MPX
LVLUNW
MPXSEL
VP
GND
VGAP
VUT2
VUT1
IFADJ
BWADJ
IFIN
IFINI
GAINADJ
n.c.
CRYSTAL
GND
n.c.
OUT300I
OUT300Q
CLIM1I
CLIM2I
CLIM3I
CLIM4I
CLIM1Q
CLIM2Q
CLIM3Q
CLIM4Q
LVLADJ
LVLWEI
IHP60
CHPMUTE
CMUTE
DEMOLOOP1
DEMOLOOP2
COP2
CON2
COO1
July 1994
PIN DESCRIPTION
1 output for RDS
2 chip enable
3 external audio frequency input (MPX signal)
4 audio frequency output (MPX signal)
5 unweighted level output
6 source selector for MPX signal
7 supply voltage (8.5 V)
8 ground (0 V)
9 internal reference voltage
10 reference voltage output
11 reference voltage output
12 input for IF filter frequency adjustment
13 input for IF filter bandwidth adjustment
14 IF signal input 1
15 IF signal input 2
16 input for mixer gain adjustment
17 not connected
18 crystal oscillator input
19 oscillator ground
20 not connected
21 IF filter output (0°)
22 IF filter output (90°)
23 IF limiter feedback 1
24 IF limiter feedback 2
25 IF limiter feedback 3
26 IF limiter feedback 4
27 IF limiter feedback 5
28 IF limiter feedback 6
29 IF limiter feedback 7
30 IF limiter feedback 8
31 input for level adjustment
32 weighted level output
33 input for high-pass −3 dB adjustment
34 output of rectified high-pass signal
35 mute input
36 demodulator output 1
37 demodulator output 2
38 MPX correction output 2
39 MPX correction input 2
40 MPX correction output 1
5
Preliminary specification
TEA6850
5 Page 
Philips Semiconductors
IF filter / amplifier / demodulator for FM
radio receivers
Preliminary specification
TEA6850
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Level amplifier (pin 5; typical curve and adjusting range see Fig.7)
ZO output impedance
TC temperature coefficient of
8
−
output voltage
V5 output voltage
α = −3 dB for EMF = 200µV; 2.1
EMF = 100 µV
EMF = 1 mV
2.95
S slope of output voltage
100 µV < EMF < 10 mV
−
V5 level shift adjustment range
Soft mute (typical curves see Fig.8)
level dependence
EMF
start of mute (α = −3 dB) for
IF input (RMS value)
EMF
−3 dB adjustment range for IF input
SM mute slope at −15 dB
VMPX/VMPX0 muting depth
I32 charge current
discharge current
τmute
time constant from unmuted to
muted
τunmute
time constant from muted to
unmuted
high-pass dependence (see Fig.9)
VMPX/VMPX0 muting depth
V1 voltage at pin 1 (RMS value)
I34 charge current
discharge current
∆V4 residual DC offset at MPX output
MPX output (pin 4)
RO output resistance
RL load resistance
CL load capacitance
V4 clipping DC voltage
V4 residual signal of 300 kHz and
higher harmonics (RMS value)
EMF = 0
EMF < 5 µV; α = −3 dB for
EMF = 200 µV
V5 = 4.5 V; V32 = 3.9 V
V5 = 4.5 V; V32 = 5.1 V
f = 60 kHz;
VMPX/VMPX0 = −3 dB
V34 = 0 V
V34 = 5 V
EMF < 80 µV
80 µV < EMF < 2 mV
V4 ≤ 1 V
±0.5
−
100
29
−35
10
20
0.75
1.5
−12
165
140
0.7
−
−
−
3
−
1.5
−
10
3.3
2.35
3.3
950
±1.0
200
−
32
−32
13
26
1
2
−10
185
200
1
−
−
−
−
−
−
−
12
−
2.6
3.65
−
±1.5
−
300
35
−29
17
34
1.3
2.6
−8
205
260
3
60
60
100
−
50
7
10
kΩ
10−3/K
V
V
mV/20
dB
V
µV
µV
dB/Dec
dB
µA
µA
ms
ms
dB
mV
µA
µA
mV
mV
Ω
kΩ
pF
V
mV
July 1994
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet TEA6850.PDF ] | |
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