TEA6821T Philips Semiconductors, TEA6821T Datasheet - Page 14

• Manufacturer Part Number: TEA6821T
• Description: ICE car radio
• Manufacturer: Philips Semiconductors

Philips Semiconductors
September 1993
THD
/ V
Unweighted level voltage
BW
R
V
V/20 dB
Adjust of level unweighted voltage and V
R
V
Muting dependence on adjust of level unweighted voltage; typical curve see Fig.15.
Soft mute, time constant control, mono/stereo blend and high-cut control
Time constant control (see application diagram Fig.3): Slow or fast attack and decay time constants for soft mute,
mono/stereo and high-cut control can be chosen connecting pin 3 to GND or pin 21.
Mute voltage: The static mute voltage follows the level unweighted voltage as function of FM IF
adjust voltage V
of Tswitch. Typical curve for mute voltage dependence on V
V
V
V
V
V
V
50-4
38-4
49-4
ICE car radio
out50
38
= V
SYMBOL
43AFCdisabled
43
50-4
50
50-4
43AFCactive
/ V
50
43
/VK
/ V
49
/V
47
38-4
38-4
total harmonic distortion
demodulator frequency control
(AFC) efficiency at 100 kHz detune
from exact tuning
residual DC-offset
bandwidth
output resistance
level unweighted voltage
slope of level unweighted voltage
temperature dependence
adjusting range
adjusting gain
input resistance
internal bias voltage
start of mute
mute slope
mute voltage
V
50-4
. It additionally depends on multipath level, noise (adjacent channel interferences) and the position
/ V
37-35
PARAMETER
mutaml
; typical adjusting range see Figs 14 and 17.
detuning
without de-emphasis
L
pin 43
V
pin 47
V
10 V < V
80 V < V
see Fig.13; V
V
V
V
(RMS) < 300 mV
V
V
V
V
V
V
demod
f = 75 kHz; f
L
37-35
37-35
37-35
37-35
37-35
37-35
37-35
49
38
37-35
37-35
= 6 dB
14
demod
/V
= 2.52 V;
37-35
21
CONDITIONS
= 300 V to 800 mV
= 1 mV to 800 mV
= 1.0 mV
= 1 mV
= 1 mV (RMS)
= 1.0 mV
= typical value
= 0.6
2.5 V
2.5 V
100 V
= typical value;
see Fig.16.
37-35
37-35
50 kHz;
38
mod
< 80 V
< 800 mV
= 2.52 V;
= 1 kHz
30
500
1.8
2.7
0.75
1.8
2.7
MIN.
0.1
0.1
100
34
10
2.4
3.4
0.845
4.0
80
2.6
3
25
2.2
3.3
Preliminary specification
TYP.
2
0.9
2
voltage and level
TEA6821T
0.35
0.35
1000
30
100
3.2
4.7
0.95
3.2
4.7
MAX.
%
%
dB
mV
mV
kHz
V
V
V
mV/VK
V
k
V
dB/V
V
V
UNIT