NTE1780 データシートの表示（PDF） - NTE Electronics
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NTE1780 Datasheet PDF : 3 Pages
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Electrical Characteristics (Cont’d): (TA = +25C, VCC = 12V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Balance Control Circuit (Cont’d)
Attenuation (L–ch)
Tone Control Circuit
AttBL
f = 1kHz, Vi = 400mVrms, V12 = VCC,
V5 = V8 = VCC/2, VOR1: V1 = (6.5/12),
VCC(VR–1), VOR2: V1 = 0V, Note 4
–32 –45 –
dB
Low Frequency Boost
Control
Low Frequency Cut
Control
High Frequency Boost
Control
High Frequency Cut
Control
Crosstalk
Output Noise Voltage
Distortion Rate
Input Resistance
Output Resistance
V40/V1k
V1k: f = 1kHz, Vi = 400mVrms Output voltage when
V12 = VCC, V1 = V5 = V8 = VCC/2
V40: f = 40Hz, Vi = 400mVrms Output voltage when
V12 = VCC, V5 = V8 = VCC
V40/V1k
V1k: f = 1kHz, Vi = 400mVrms Output voltage when
V12 = VCC, V1 = V5 = V8 = VCC/2
V40: f = 40Hz, Vi = 400mVrms Output voltage when
V12 = VCC, V5 = V8 = VCC
V15/V1k
V1k: f = 1kHz, Vi = 400mVrms Output voltage when
V12 = VCC, V1 = V5 = V8 = VCC/2
V15: f = 15kHz, Vi = 400mVrms Output voltage when
V12 = VCC, V5 = V8 = VCC
V40/V1k
V1k: f = 1kHz, Vi = 400mVrms Output voltage when
V12 = VCC, V1 = V5 = V8 = VCC/2
V15: f = 15kHz, Vi = 400mVrms Output voltage when
V12 = VCC, V5 = V8 = VCC
CT f = 1kHz, Vi = 400mVrms, V1q2 = VCC,
V1 = V5 = V8 = VCC/2
Vno Vi = No Signal, V12 = VCC, V1 = V5 = V8 = VCC/2
THD
f = 1kHz, Vi = 400mVrms, V12 = VCC,
V1 = V5 = V8 = VCC/2
Ri (6), (9) f = 1kHz
Ri (4), (11)
Ro (3), (10) f = 1kHz
8 10 12 dB
–7.5 –12.0 –16.0 dB
7.5 10.0 13.0 dB
–7.5 –12.0 –18.0 dB
–65 –80 –
dB
–
80 120 µVrms
– 0.2 0.5 %
8.2 11.0 13.5 kΩ
11.0 16.0 22.0 kΩ
60 110 160 Ω
Note 4. AttBL: VOL2/VOL1
Pin Connection Diagram
(Front View)
12 Volume Control
11 Lt Ch Low Freq Input
10 Lt Ch Output
9 Lt Ch Input
8 Treble Control
7 GND
6 Rt Ch Input
5 Bass Control
4 Rt Ch Low Freq Input
3 Rt Ch Output
2 VCC
1 Balance Control
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