tda9845t NXP Semiconductors, tda9845t Datasheet - Page 8

• Manufacturer Part Number: tda9845t
• Description: Tv And Vtr Stereo/dual Sound Processor With Digital Identification
• Manufacturer: NXP Semiconductors

Philips Semiconductors
CHARACTERISTICS
V
value (AM: m = 0.54); nominal output signal V
f
noise measurement in accordance with “CCIR468-3” , working oscillator frequency f = 10008 MHz;
currents into the IC positive; measured in test circuit Fig.5 unless otherwise specified.
1995 Mar 20
pil
SYMBOL
Supply
V
I
P
V
V
l
AF Inputs; V
V
V
G
R
R
Additional AF input pin (pin 10)
V
V
G
R
f = 27 kHz); nominal input signal V
L(DC)
P
P
P
tot
n(DC)
ref(DC)
i(rms)
i(rms)
i(rms)
i(rms)
TV and VTR stereo/dual sound processor
with digital identification
i
deem
i
v
v
= 54.6875 kHz (identification frequencies: stereo = 117.48 Hz, dual = 274.12 Hz), 50 s pre-emphasis;
= 5 V; T
amb
supply voltage (pin 18)
supply current (pin 18)
total power dissipation
DC voltage
(pins 8 to 13 and 17)
DC reference voltage (pin 7)
DC leakage current (pin 7)
nominal input signal voltage
(RMS value)
clipping voltage level
(RMS value)
AF signal voltage gain
input resistance
internal de-emphasis resistor
(pins 13 and 17)
nominal input signal voltage
(RMS value)
clipping voltage level
(RMS value)
AF signal voltage gain
input resistance
i 1
= +25 C; nominal input signal V
and V
PARAMETER
i 2
(pins 8 and 9)
i 1
= 0.5 V RMS value (AM: m = 0.54); nominal input signal V
without LED current
54% modulation
THD
G = V
see Fig.4
54% modulation
THD
G = V
B/G
L (only V
V
V
V
V
B/G
L (only V
V
V
o 1, 2
P
P
P
P
P
P
i 1, 2
= 5 V; B/G
= 8 V; B/G
= 5 V; L (only V
= 8 V; L (only V
= 5 V
= 8 V
CONDITIONS
o
o
/V
/V
1.5%
1.5%
= 0.5 V RMS value; f
= 0.25 V RMS value (FM: 54% modulation is equivalent to
i
i
; note 1
; note 1
i 1
i 1
)
)
8
i 1
i 1
)
)
4.5
12
54
1
1
0.625
1.050
1.200
2.100
5
40
4.25
0.625
1.050
5
40
AF
2
2
1
V
V
MIN.
P
P
= 1 kHz; V
0.1
0.1
5
13
65
1
1
0.25
0.5
0.715
1.200
1.600
2.356
6
0
50
5.0
0.25
0.715
1.200
6
50
i pil
2
2
V
V
TYP.
P
P
= 16 mV RMS value;
Preliminary specification
8.8
16.5
145.2
1
1
7
+1
60
5.75
7
60
i 3
2
2
1
V
V
MAX.
= 0.25 V RMS
P
P
TDA9845
0.1
0.1
V
mA
mW
V
V
V
V
V
V
V
V
dB
dB
k
k
V
V
V
dB
k
A
UNIT