TDA9820 データシートの表示（PDF） - Philips Electronics
部品番号
コンポーネント説明
メーカー
TDA9820 Datasheet PDF : 20 Pages
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Philips Semiconductors
Multistandard/dual channel TV FM
intercarrier sound demodulator
Product specification
TDA9820
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Control unit; see Table 1
V5,6
voltage for LOW level
I5,6
source current for LOW level
R5,6
allowed resistance to ground
0 < V5,6 < 0.8
0 < V5,6 < 0.8
(LOW-level)
0
−
0.8
V
−
180
250
µA
−
−
3.0
kΩ
V5
voltage for HIGH level
V6
voltage for HIGH level
I5,6
sink current for HIGH level
note 3
note 3
V5, 6 = VP
2.2
−
1.8
−
−
−
VP
V
VP
V
10
µA
Notes
1. The output signal at pin 7 can only be measured when mute is disabled. This is achieved by inserting a resistor of
2.7 kΩ between pin 15 and ground. In this event the input impedance is 490 Ω.
2. Improvement of ripple rejection is possible by connecting series RC between pin 11 and pin 14 (15 kΩ + 2.2 µF;
see Fig.5) for a supply voltage of 4.5 to 5.5 V. The rejection of ripple frequencies up to 3 kHz is improved, but up to
200 kHz is worse; see Fig.3.
3. An open pin (n.c.) is interpreted as HIGH.
40
handbook, full pagewidth
RR
(dB)
30
20
MHA530
(1)
(2)
10
0
4
5
6
7
8
VP (V)
9
The curves are typical and valid for ripple frequencies between 50 Hz and 3 kHz.
Conditions: input signal: f = 5.5 MHz, 10 mV (RMS value); ripple on VP = 100 mV (RMS value), fr = 1 kHz;
ripple rejection measurement: unweighted RMS.
(1) Without RC.
(2) With R = 15 kΩ and C = 2.2 µF.
Fig.3 Typical improvement.
1996 Nov 20
9
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