UPC2800 查看數據表（PDF） - NEC => Renesas Technology
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UPC2800 Datasheet PDF : 12 Pages
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µPC2800A
CHARACTERISTIC CURVE (TA = 25 °C)
ICC vs. VCC Characteristics
5
4
AV vs. fIN Characteristics
100
R2 = 130 kΩ
80
3
60
2
40
1
20
0
3.5 4 4.5 5 5.5 6 6.5
Supply voltage VCC (V)
0
30
40
50
Input frequency fIN (kHz)
fO vs. R2 CharacteristicsNote 1
85
80
VCC = 5.0 V Note 1. The relation between fO and R2 (recom-
mended value) is as follows:
70
60
50
40
30
25
40
60
80 100 120 140 160 180
Frequency setting resistor R2 (kΩ)
fO (kHz)
32.7
36.0
36.7
38.0
40.0
56.7
70.0
R2 (recommended value) (kΩ)
155
139
136
130
123
80
60
AV vs. R1 CharacteristicsNote 2
80
Note 2. This is the value of a resistor that is externally con-
nected as follows:
5V
130 kΩ
+
47 µF
75
70
0
0.5
1.0
External resistor of pin 7 R1 (kΩ)
f = 38 kHz
VIN = 30 µVp-p
+8
0.47 µF
51 Ω
Voltage gain = VO
VIN
1
4
3
µPC2800A
7
5
R1
0.01 µF
6
VO
1 MΩ
7
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