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| Datasheet File OCR Text: |
| NTE1439 Integrated Circuit Dual Attenuator Description: The NTE1439 is an integrated circuit in a 14-Lead DIP type package which logarithmically controls the throughput (gain) of an audio signal by the DC voltage or resistance value and has 2 circuits. Since voltage is internally stabilized, the stable operations are assured at the allowable supply voltage range (8V to 14.4V). The current source is provided with control circuit so that operation can be controlled by the voltage drop. This device is used for electronic volume control in radio, television, stereo, tape recorder, an transceiver applications. Features: D Wide Operating Voltage Range D High Attenuation Level D Easy to Control Signal Gain with a Simple Circuit D Less Crosstalk Between Each Channel Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.4V Circuit Voltage (Note 1), V6, V13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V Circuit Voltage, V3, V10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC Total Current Dissipation, Itot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA Total Power Dissipation, Ptot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360mW Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +75C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +150C Note 1. DC voltage must not be applied to Pin1, Pin2, Pin8, and Pin9 from the outside. 6V is used as voltage for V6 and V13 and no larger than VCC voltage. Electrical Characteristics: (TA = +25C, VCC = 12V unless otherwise specified) Parameter Gain Symbol GV1 GV2 GV3 Gain Ratio (Ch2/Ch1) Test Conditions vi = 100mV, Vcont = 5V, f = 1kHz vi = 100mV, Vcont = 4V, f = 1kHz vi = 100mV, Vcont = 3V, f = 1kHz Min 11.7 10.5 -14 -6 Typ - - - - Max 15.7 15.0 2 +6 Unit dB dB dB dB GV3(2)/GV3(1) vi = 100mV, Vcont = 3V, f = 1kHz Note 2. The same measurement should be applied for Ch2. Electrical Characteristics (Cont'd): (TA = +25C, VCC = 12V unless otherwise specified) Parameter Residual Noise Noise Crosstalk Output DC Voltage Output Voltage Fluctuation Control Input Current Symbol vO vN CT VO VO -Icont ICC THD V(BR)D Test Conditions vi = 100mV, VC = 1V, f = 1kHz, B = 20kHz vi = 0V, VC = 3.5V, B = 20kHz vi = 500mV, VC = 5V, f = 1kHz VC = 5V VC = 5V to 0V Rcont = 0 Rcont = 20k Supply Current Distortion Factor D6 Breakdown VC = 5V vi = 100mV, VC = 5V, f = 1kHz I6, I13 = 10A Min - - 60 5.7 -0.65 0.15 0.15 - - 6 Typ - - - - - - - - - - Max 100 150 - 8.2 +0.65 0.33 0.33 22 0.5 - Unit V V dB V V mA mA mA % V Note 2. The same measurement should be applied for Ch2. Pin Connection Diagram Ch 1 Input Ch 1 Equalize Ch 1 Output 1 2 3 14 N.C. 13 Ch 1 Control 12 Ch 1 VCC 11 N.C. 10 Ch 2 Output 9 8 Ch 2 Equalize Ch 2 Input GND 4 Ch 2 VCC 5 Ch 2 Control 6 N.C. 7 14 8 1 7 .785 (19.95) Max .200 (5.08) Max .300 (7.62) .100 (2.45) .600 (15.24) .099 (2.5) Min |
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