tda8740h NXP Semiconductors, tda8740h Datasheet - Page 11

• Manufacturer Part Number: tda8740h
• Description: Satellite Sound Circuit With Noise Reduction
• Manufacturer: NXP Semiconductors

Philips Semiconductors
October 1994
Secondary channels 1 and 2 - HF inputs pins 2, 4, 6, 8, 10, 12, 14 and 16 (1, 3, 5, 7, 9, 11, 40 and 42) and
limiters
V
V
R
Secondary channels 1 and 2 - PLL FM demodulators (input selector in position 1)
f
f
R
V
Secondary channels - overall performance of LPF and NR (input and output selectors in position 1)
R
R
V
UBS
THD
S/N(A)
R
MUTE
V
SVRR
CCO1
CCO2
f
V
S/S
M/S
IN1,IN2
I(rms)
CDCL,CDCR
OL,OR
offset(DC)
Satellite sound circuit with noise reduction
i
S1,S2
o
i
o
OS1/2
CDCL,CDCR
att
SYMBOL
(
rms
)
input sensitivity (RMS value)
input signal level (RMS value)
input resistance
free running frequency PLL1
free running frequency PLL2
lock range of PLLs
series resistance for optimum
frequency response
adjustment
PLL output voltage pins 40
and 42 (36 and 38) (RMS
value)
spread of PLL output voltage
over lock range
output resistance for 75 s
de-emphasis pins 36 and 32
(32 and 28)
input resistance of output
amplifiers pins 35 and 33
(31 and 29)
output voltage level
pins 25 and 24 (21 and 20)
unbalance voltage outputs
pins 25 and 24 (21 and 20)
total harmonic distortion
signal-to-noise ratio
output resistance pins 25 and
24 (21 and 20)
mute attenuation
crosstalk attenuation between
secondary channels
crosstalk attenuation from
main channel to secondary
DC offset voltage on
attack/recovery capacitors
pins 29, 39 (25, 35)
supply voltage ripple rejection
PARAMETER
11
S/N(A) = 40 dB
note 3
pins to be left open-circuit
note 4
note 4
note 4
A-weighted; note 4
note 4
output selector in
position 6; note 4
note 5
note 6
all PLLs locked; f = 0
V
RR
= 100 mV; f
CONDITIONS
i
= 70 Hz
TDA8740; TDA8740H
260
6.0
0
1.9
95
72
92
74
14
MIN.
8
1
0.8
330
7.0
7.2
0.22
7
2.3
150
0.1
80
125
74
74
16
25
TYP.
6
Product specification
1.5
200
380
8.5
1.0
2.6
200
+1
0.5
150
20
MAX.
1
4
mV
mV
MHz
MHz
MHz
k
mV
dB
k
k
dBV
dBV
%
dB
dB
dB
dB
mV
dB
UNIT