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NTE2004 Datasheet(PDF) 1 Page - NTE Electronics |
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NTE2004 Datasheet(HTML) 1 Page - NTE Electronics |
1 / 2 page NTE2004 Integrated Circuit Dolby[ Noise Reduction Circuit Description: The NTE2004 is a monolithic audio noise reduction circuit in a 16–Lead DIP type package designed for use in Dolby B–Type noise reduction systems. This device is used to reduce the level of back- ground noise introduced during recording and playback of audio signals on magnetic tape and to im- prove the noise level in FM broadcast reception. Features: D Accurate Record Mode Frequency Response D Excellent Frequency Response Tracking with Temperature and VCC ±0.4dB Typ D Excellent Back–to–Back Dynamic Response – DC Shift Less Than 20mV Typ D Improved Stability of all OP Amps D High Reliability Packaging Absolute Maximum Ratings: Supply Voltage, VCC 24V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Temperature Range, Topr 0 ° to +70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage Temperature Range, Tstg –65 ° to +150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lead Temperature (During Soldering, 60sec max), TL +300 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electrical Characteristics: (TA = +25°C, VCC = 12V, f = 20Hz to 20kHz. All levels referenced to 580mVrms(0dB) unless otherwised specified) Parameter Test Conditions Min Typ Max Unit Supply Voltage Range 8 – 20 V Supply Current VCC = 12V – 16 24 mA Voltage Gain (Pin5–3) f = 1kHz, Pin6 and Pin2 Connected 24.5 26.0 27.5 dB (Pin3–7) f = 1kHz, 0dB at Pin3, Noise Reduction Out –0.5 0 +0.5 dB Total Harmonic Distortion 2nd Harmonic f = 20Hz to 10kHz, 0dB – 0.05 0.2 % 3rd Harmonic f = 20Hz to 10kHz, +10dB – 0.2 0.5 % Signal Handling VCC = 12V, 1% Distortion at 1kHz +12 +15 – dB Signal–to–Noise Ratio Record Mode Note 1 64 72 – dB Playback Mode 74 82 – dB Note 1. All noise levels are measured CCIR/ARM weighted using a 10K source with respect to Dolby level. |
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