Philips TDA1597 - Manual (Page 8)

1997 Feb 27 8
Philips Semiconductors Product specification
IF amplifier/demodulator for FM radio receivers TDA1597
OPERATING CHARACTERISTICS
V
P
= 7.5 to 12 V; T
amb
= 25
°
C; FM-MUTE-ON (I
7
= 0); f
IF
= 10.7 MHz; deviation
±
22.5 kHz with f
m
= 400 Hz;
V
i
= 10 mV (RMS) at pin 20; de-emphasis of 50
µ
s; tuned circuit at pins 10 and 11 aligned for symmetrical stop pulses;
measurements taken in Fig.4; unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
IF amplifier and demodulator
V
i(rms)
input signal for start of limiting
(
−
3 dB) (RMS value; pin 20)
V
7
= V
ref
; FM-MUTE-OFF 14 22 35
µ
V
input signal for signal-to-noise
ratio (RMS value) f = 250 to 15000 Hz; V
7
= V
ref
S/N = 26 dB
−
15
− µ
V
S/N = 46 dB
−
60
− µ
V
S/N signal-to-noise ratio deviation
±
75 kHz
−
82
−
dB
V
o(rms)
AF output signal (RMS value;
pin 4) 180 200 220 mV
THD total harmonic distortion without
de-emphasis
without detuning deviation
±
75 kHz; f
m
= 1 kHz;
I
7
= 0
−
0.1 0.3 %
±
25 kHz detuning deviation
±
75 kHz; f
m
= 1 kHz;
I
7
= 0
− −
0.6 %
compensated via pin 3 deviation
±
75 kHz; f
m
= 1 kHz;
I
7
= 0; V
7
= V
ref
−
0.07 0.25 %
∆
V
4
K2 adjustment
∆
V
4
= V
4
(V
3
= 0)
−
V
4
(V
3
= V
ref
)
10
− −
mV
α
AM
AM suppression on pin 4 V
7
= V
ref
; m = 30%
V
i
= 0.3 to 1000 mV (RMS) on pin 20 46 55
−
dB
V
i
= 1 to 300 mV (RMS) on pin 20 60 65
−
dB
Dynamic mute attenuation
α
; note 1
α
dynamic mute attenuation deviation
±
75 kHz;
f
m
= 100 kHz; V
2
= 1 V
−
14
−
dB