UPC4558G2-E1 查看數據表（PDF） - NEC => Renesas Technology
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UPC4558G2-E1 Datasheet PDF : 11 Pages
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µPC4558
APPLICATION CIRCUIT
RIAA PREAMP (AV = 32.5 dB)
0.0022 µF 0.01 µF +15 V
Input
33 µF
2.2 kΩ
56 kΩ
36 kΩ 390 kΩ
−
µ PC4558
+
+
100µF
−
+−
33 µF
Output
+
47 µF
−
1 kΩ −15 V
−
100 µF
+
10 kΩ
TYPICAL CHARACTERISTIC
Distortion 0.03% (VO = 1Vr.m.s., f = 1 kHz)
Noise 1.0 µVr.m.s. (Input Equiv., Input Short
Peak DEt., Average Indication)
TOTAL HARMONIC DISTORTION
1.0
0.1
1 kHz high-pass filter ON
0.01
0.001
0.01
20 Hz
0.1
1.0
1
VO - Output Voltage - Vr.m.s.
PEAK LEVEL METER
This circuit converts the peak voltage (about ± 10 mV to ±10 V) of the input signal to a DC voltage (about 0.2 V to 1.3
V) and drives the meter.
Since the output voltage is proportional to the logarithmic value of the peak voltage of the input signal, indication of a
much wider dynamic range can be obtained compared to conventional linear indicating methods.
1S953
100 kΩ
30 kΩ
30 kΩ
15 kΩ
1S953
51 kΩ
−
-40 dB to +5 dB 1/2
(0 dB = 1 Vp-p) µ PC4558
+
100 kΩ
30 kΩ
1S953
+15 V
−
1/2
µ PC4558
1S953
+
30 kΩ−15 V
30 kΩ
30 kΩ
+15 V
+15 V
−
1/4
µPC324
1S953
x2
20 kΩ
−
2SK163
1/4
µ PC324
+
+
−15 V
+
20 kΩ
Log-Compression
Full-wave Rectification
200 kΩ
–15 V
3.3µF
2 kΩ
0.22 µ F
Peak Hold
Meter Amp.
Data Sheet G10518EJAV0DS
7
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