TDA9801 NXP Semiconductors, TDA9801 Datasheet - Page 13

• Manufacturer Part Number: TDA9801
• Manufacturer: NXP Semiconductors

Specifications of TDA9801

• Pin Count: 20
• Screening Level: Commercial
• Lead Free Status / Rohs Status: Compliant

Philips Semiconductors
Notes
1. Values of video and sound parameters can be decreased at V
2. This parameter is not tested during production and is only given as application information for designing the television
3. Conditions for video demodulator:
4. Temperature coefficient of the external LC circuit is equal to zero.
5. V
6. V
7. Broadband transformer at the VIF input (see Fig.12). The C/N ratio at the VIF input for ‘lock-in’ is defined as the VIF
8. The offset current is measured between pin TPLL and half of the supply voltage (V
9. The intercarrier output signal is superimposed to the video signal at pin VSO and can be calculated by the following
1999 Aug 26
Measurements from VIF input to AF output; notes 20 and 21; see Fig.13
S/N
Single standard VIF-PLL demodulator
and FM-PLL detector
SYMBOL
receiver.
a) Loop bandwidth: BL = 60 kHz, natural frequency f
b) Resonance circuit of VCO: Q
input signal (RMS value of sync pulse level) related to a superimposed 5 MHz band-limited white noise signal
(RMS value). The video modulation is for white picture.
a) no input signal at VIF inputs
b) IF amplifier gain at minimum (V
formula:
where
a) 1.0 V (p-p) = video output signal as reference
b)
c)
d) 6 dB = correction term of internal circuitry
e)
f) Example for SAW filter G1962:
V
W
i(VIF)(rms)
i(VIF)
o(intc)(rms)
FPLL input level
voltage is approximately 2.6 V at V
sound shelf value = 20 dB,
---------- -
2 2
V
-------------- - (dB)
V
V
-------------- -
V
2 dB = tolerance of video output and intercarrier output amplitude V
1
i(SC)
i(PC)
i(SC)
i(PC)
signal for nominal video signal.
= correction term for RMS value
= 10 mV; f = 1 MHz (VCO frequency offset related to f
=
=
–
1.0 V (p-p)
27 dB
weighted signal-to-noise
ratio
= sound-to-picture carrier ratio at VIF inputs in dB
PARAMETER
V
o(intc)(rms)
---------- -
2 2
1
o
10
> 50, see Table 2 for the value of the external capacitor C; C
=
AGC
32 mV (typical value)
V
-------------- - (dB)
------------------------------------------------------------------
V
i(SC)
i(PC)
P
= V
= 5 V and approximately 2.7 V at V
P
) and pin ADJ is left open-circuit.
“CCIR 468-4”
20
+
black picture (sync only) 46
white picture
colour bar
6 dB 2 dB
CONDITIONS
n
= 15 kHz, damping factor d = 2, calculated with grey level and
13
P
= 4.5 V.
PC
); white picture video modulation.
o(intc)(rms)
42
40
MIN.
P
= 9 V.
.
P
52
48
46
= 2.5 V) under the conditions:
TYP.
Product specification
VCO
MAX.
TDA9801
= 8.5 pF, loop
dB
dB
dB
UNIT