tda8740h NXP Semiconductors, tda8740h Datasheet - Page 13

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

Philips Semiconductors
Notes
1. At pin 20 (16) the demodulated 1 kHz signal should be present with a typical level of 158 mV (RMS) ( 16 dBV), and
2. Modulation of main channel is OFF; modulation of secondary channels is ON.
3. The electrolytic capacitors at pins 40 and 42 (36 and 38) are removed and 1500 pF capacitors between pin 40 (36)
4. All PLLs locked; R
5. Modulation of secondary channel being measured and main channel is OFF; modulation of other secondary channel
6. Modulation of main channel is ON; modulation of secondary channels is OFF.
7. Measured at pins 38 (34) (left) and 30 (26) (right) and no electrolytic capacitors connected to these pins.
October 1994
Output selector control circuit (see also Table 2) and main channel PLL lock-in select [MCS pin 7 (2)]; pins 15,
17, 26 and 13 (10, 13, 22 and 8) are MOS inputs and should not be left open-circuit
V
V
V
V
R
R
I
I
IL
IH
IL
IM
IMF
IH
Satellite sound circuit with noise reduction
IL
IH
THD of maximum 0.5%; V
and ground and between pin 42 (38) and ground are connected. At pins 40 and 42 (36 and 38) the demodulated
1 kHz signals should be present with typical levels of 7 mV (RMS) and THD of maximum 0.5%; V
T
is ON.
amb
SYMBOL
= 20 to +70 C.
S1
= R
LOW level input voltage limits
MID level input voltage limits
for MCS pin only
MID level input voltage on
MCS pin if MCS pin is floating
HIGH level input voltage limits
low input resistance MCS pin
to ground
high input resistance MCS pin
to V
LOW level input current
(not MCS pin)
HIGH level input current
(not MCS pin)
S2
P
P
= 220 k .
= 8 to 13.2 V; T
PARAMETER
amb
= 20 to +70 C.
13
V
V
V
P
IL
IH
must be 10.8 to 13.2 V 17
= 0 V
= 5 V
CONDITIONS
TDA8740; TDA8740H
0
1.8
3.5
12
52
MIN.
19
19
80
TYP.
1
1
Product specification
P
= 8 to 13.2 V;
1.2
2.8
21
V
26
108
MAX.
P
V
V
%V
V
k
k
UNIT
A
A
P