TEA6821T Datasheet, PDF (13/47 Pages) NXP Semiconductors – ICE car radio

Philips Semiconductors
ICE car radio
Preliminary specification
TEA6821T
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
V_29-4
maximum output voltage
(RMS value)
R_27-24
C_27-4, C_24-4
R_29-4
C_29-4
input resistance
input capacitance
output resistance
output capacitance
FM IF2 limiter
220 270 −
mV
300 330 360 Ω
−
−
5
pF
300 330 360 Ω
−
−
5
pF
V_1-2/V_37-35
C_37-4
R_1-2
C_1-2
V_1-2
limiter gain
input capacitance
output resistance
output capacitance
limiter output voltage
(peak-to-peak value)
see Fig.10
−
74
−
dB
−
−
5
pF
−
−
1.0 kΩ
10
15
20
pF
500 700 −
mV
FM demodulator
f_mod = 1kHz; deviation = 22.5 kHz; R_g= 50 Ω; V_37-35 = 10 mV; with de-emphasis = 50 µS; coil quality = 15 unless
otherwise specified.
V_47-4
R_47out
B
MPX output (RMS value)
output resistance
AF bandwidth
160 200 240 mV
−
−
500 Ω
200 −
−
kHz
V_43-4
R_43out
B
MPX output for RDS (RMS value)
output resistance
AF bandwidth
160 200 240 mV
−
−
500 Ω
200 −
−
kHz
V_37-35
V_37-35
start of limiting (RMS value)
input voltage for
signal-plus-noise-to-noise ratio
(RMS value)
α_AF = −3 dB
−
see Fig.11 for pin 47
(MPXOUT) and Fig.12 for
pin 43 (RDS/AMSTOP)
40
60
µV
S+N/N = 26 dB
−
40
55
µV
S+N/N = 46 dB
−
100 140 µV
S + N/N
signal-plus-noise-to-noise ratio
66
72
−
dB
V_43FM/V_43AM suppression
V_47FM/V_47AM suppression
∆f = 22.5 kHz;
55
60
−
dB
f_modAM = 1 kHz;
m_AM = 30%;
V_37-35 = 3 mV to 300 mV
V_37-35 = 1 mV to 300 mV 55
60
−
dB
September 1993
13