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| NTE1780 Integrated Circuit 2 Channel Tone/DC Volume/Balance Control Circuit Description: The NTE1780 is an integrated circuit in a 12-Lead SIP type package designed for 2-channel volume and tone control circuits. Features: D Easier Compact Set Design D Functions Are: 2-Channel Bass, Treble Control Circuit D Balance Control Circuit D DC Volume Control Circuit (Volume Control w/Physiological Characteristics) D All Functions Enable DC Controllable Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.4V Circuit Voltage, V1, 4, 5, 6-7, V8, 9, 11, 12-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0, V2-7 Supply Current, I2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64mA Circuit Current, I3, I10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40mA Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 920mW Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +150C Electrical Characteristics: (TA = +25C, VCC = 12V unless otherwise specified) Parameter Circuit Current Circuit Voltage Volume Circuit Maximum Output Channel Balance (Note 1) Volume Starting Voltage Residual Tone Level (Volume Minimum) Balance Control Circuit Attenuation (R-ch) AttBR f = 1kHz, Vi = 400mVrms, V12 = VCC, V5 = V8 = VCC/2, VOR1: V1 = (5.5/12), VCC(VR-1), VOR2: V1 = 0V, Note 3 -32 -45 - dB VOmax CB V(st) Vmin. f = 1kHz, Vi = 400mVrms, V12 = VCC, V1 = V5 = V8 = VCC/2 f = 1kHz, Vi = 400mVrms, V12 = VR, V1 = V5 = V8 = VCC/2, Note 2 f = 1kHz, Vi = 400mVrms, V12 = 0, V1 = V5 = V8 = VCC/2 190 - 0.40 - 230 +0.2 0.60 25 270 1.0 0.90 50 V Vrms mVrms Symbol Itot V3, 10-7 VCC = 12V Vi = No Signal, V12 = VCC, V1 = V5 = V8 = VCC/2 Test Conditions Min 24 8.0 Typ 38 8.4 Max 50 8.8 Unit mA V Note 1. Deviation between R and L-ch for maximum output. Note 2. V12 voltage when output voltage is 0.1mVrms. Note 3. AttBR: VOR2/VOR1 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) AttBL f = 1kHz, Vi = 400mVrms, V12 = VCC, V5 = V8 = VCC/2, VOR1: V1 = (6.5/12), VCC(VR-1), VOR2: V1 = 0V, Note 4 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 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 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 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 f = 1kHz, Vi = 400mVrms, V1q2 = VCC, V1 = V5 = V8 = VCC/2 Vi = No Signal, V12 = VCC, V1 = V5 = V8 = VCC/2 f = 1kHz, Vi = 400mVrms, V12 = VCC, V1 = V5 = V8 = VCC/2 f = 1kHz -32 -45 - dB Tone Control Circuit Low Frequency Boost Control V40/V1k 8 10 12 dB Low Frequency Cut Control V40/V1k -7.5 -12.0 -16.0 dB High Frequency Boost Control V15/V1k 7.5 10.0 13.0 dB High Frequency Cut Control V40/V1k -7.5 -12.0 -18.0 dB Crosstalk Output Noise Voltage Distortion Rate Input Resistance CT Vno THD Ri (6), (9) Ri (4), (11) -65 - - 8.2 11.0 60 -80 80 0.2 11.0 16.0 110 - 120 0.5 13.5 22.0 160 dB Vrms % k k Output Resistance Ro (3), (10) f = 1kHz Note 4. AttBL: VOL2/VOL1 Pin Connection Diagram (Front View) 12 Volume Control 11 Lt Ch Low Freq Input 10 9 8 7 6 5 4 3 2 1 Lt Ch Output Lt Ch Input Treble Control GND Rt Ch Input Bass Control Rt Ch Low Freq Input Rt Ch Output VCC Balance Control 1.157 (29.4) .150 (3.81) .311 (7.9) 1 12 .184 (4.7) .100 (2.54) Typ 1.100 (27.9) |
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