NTE1803 Integrated Circuit Stereo Audio Control

Transcription

1 NTE1803 Integrated Circuit Stereo Audio Control Description: The NTE1803 is an linear integrated circuit in a 18 Lead DIP type package designed as an active stereo tone/volume control for car radios, TV receivers, and audio equipment. It includes functions for bass and treble control, volume control with built in contour (can be switched off), and balance. All these functions can be controlled by DC voltages or by single linear potentiometers. The bass and treble responses are defined by a single capacitor per control per channel. Features: Few External Components Necessary Low Noise due to Internal Gain Bass Emphasis can be Increased by a Double Pole Low Pass Filter Wide Power Supply Range Applications: Hi Fi Radio Auto Radio TV Audio Systems Absolute Maximum Ratings: Supply Voltage (V 3 18 ), V CC V Total Power Dissipation, P TOT mW Operating Ambient Temperature Range, T A to +80 C Storage Temperature Range, T stg to +150 C

2 DC Electrical Charactertistics: Supply (Pin3) (V CC = 12V, T A = +25 C, R G 600Ω, R L 4.7kΩ, C L 200pF unless otherwise specified) Supply Voltage (V CC ) V V Supply Current (I C ) I 3 V CC = 8.5V ma V CC = 12V ma V CC = 15V ma DC Input Levels (Pin4 and Pin15) V 4, V CC = 8.5V V V CC = 12V V V CC = 15V V DC Output Levels (Pin8 and Pin11) un- V 8, V CC = 8.5V V der all control voltage conditions with DC feedback V CC = 12V V V CC = 15V V Pin17 Application with Internal Potentiometer V V CC = 8.5V V Contour ON/OFF Switch (Control by I 17 ) I 17 Contour (Switch Open) 0.5 ma Application without Internal Potentiometer V V CC 10.8V, voltage range forced to Pin17(Contour cannot be switched OFF) Linear (Switch Open) ma 4.5 V CC /2 V BE V DC Control Voltage Range for volume, V 1, 9, 10, 16 V = 5V V bass, treble, and balance (Pin1, Pin9, Pin10, and Pin16 respectively) Using internal supply V Input Current of Control Inputs (Pin1, Pin9, Pin10, and Pin16) I 1, 9, 10, 16 5 µa AC Electrical Charactertistics: (V CC = V 3 18 = 12V, T A = +25 C, contour switch closed (linear posi tion), volume, balance, bass, and treble controls in mid position, R G 600Ω, R L 4.7kΩ, C L 200pF, f = 1kHz unless otherwise specified) Control Range Maximum Gain of Volume A V max db Volume Control Range A V A V max/a V min db Balance Control Range A V A V = 0dB 40 db Bass Control Range at 40Hz A V ±12 ±15 db Treble Control Range at 16kHz A V ±12 ±15 db Signal Inputs, Outputs Input Resistance (Pin4 and Pin15) R 14,15 A V = 20dB, Note 1 10 kω A V = 40dB, Note kω Output Resistance (Pin8 and Pin11) R O8, Ω Note 1. Equation for input resistance: R I = 160kΩ ; A 1 + A V max = 12. V

3 AC Electrical Charactertistics (Cont d): (V CC = V 3 18 = 12V, T A = +25 C, contour switch closed (linear position), volume, balance, bass, and treble controls in mid position, R G 600Ω, R L 4.7kΩ, C L 200pF, f = 1kHz unless otherwise specified) Signal Processing Power Supply Ripple Rejection PSRR V CC(RMS) 200mV, f = 100Hz, A V = 0dB db Channel Separation (250Hz to 10kHz) α CS A V = 20dB to +21.5dB db Spread of Volume Contol with Constant Control Voltage Gain Tolerance Between Left and Right Channel A V V 1 18 = 0.5V ±3 db A V, L R V = V 1 18 = 0.5V db Tracking Between Channels A V A V = 21.5dB to 26dB, f = 250Hz to 6.3kHz, balance adjusted at A V = 10dB Signal Handling with DC Feedback Input Signal Handling V I(RMS) V CC = 8.5V, THD = 0.5%, V CC = 8.5V, THD = 0.7%, V CC = 12V, THD = 0.5%, V CC = 12V, THD = 0.7%, V CC = 15V, THD = 0.5%, V CC = 15V, THD = 0.7%, Output Signal Handling (Note 2, Note 3) V O(RMS) V CC = 8.5V, THD = 0.5%, Noise Performance (V CC = 8.5V) V CC = 8.5V, THD = 10%, V CC = 12V, THD = 0.5%, V CC = 15V, THD = 0.5%, 2.5 db V V V V 2.2 V V 3.5 V Output Noise Voltage (Unweighted) at V NO(RMS) for maximum voltage gain, Note µv f = 20Hz to 20kHz (RMS value) A V = 3dB, Not e µv Output Noise Voltage (Weighted) CCIR V NO(M) for maximum voltage gain, Note µv for maximum emphasis of bass and treble (contour OFF, A V = 40dB), Note µv Note 2. Frequencies below 200Hz and above 5kHz have reduced voltage swing. The reduction at 40Hz and at 16kHz is 30%. Note 3. In the event of bass boosting the output signal handling is reduced. The reduction is 1dB for maximum bass boost. Note 4. Linear frequency response.

4 AC Electrical Charactertistics (Cont d): (V CC = V 3 18 = 12V, T A = +25 C, contour switch closed (linear position), volume, balance, bass, and treble controls in mid position, R G 600Ω, R L 4.7kΩ, C L 200pF, f = 1kHz unless otherwise specified) Noise Performance (V CC = 12V) Output Noise Voltage (Unweighted) at V NO(RMS) for maximum voltage gain, Note µv f = 20Hz to 20kHz (RMS value), Note 5 A V = 16dB, Note µv Output Noise Voltage (Weighted) CCIR V NO(M) for maximum voltage gain, Note µv for maximum emphasis of bass and 400 µv treble (contour OFF, A V = 40dB) Noise Performance (V CC = 15V) Output Noise Voltage (Unweighted) at V NO(RMS) for maximum voltage gain, Note µv f = 20Hz to 20kHz (RMS value), Note 5 A V = 16dB, Note µv Output Noise Voltage (Weighted) CCIR V NO(M) for maximum voltage gain, Note µv for maximum emphasis of bass and 420 µv treble (contour OFF, A V = 40dB) Note 4. Linear frequency response. Note 5. For peak values add 4.5dB to RMS values. Pin Connection Diagram Volume Control 1 18 GND Bypass 2 17 Reference Control Voltage V CC 3 16 Balance Control Rt Ch Input 4 15 Lt Ch Input Rt Ch Bass Capacitor Rt Ch Bass Capacitor Rt Ch Treble Capacitor Lt Ch Bass Capacitor 13 Lt Ch Bass Capacitor 12 Lt Ch Treble Capacitor Rt Ch Output 8 11 Lt Ch Output Bass Control 9 10 Treble Control

5 (22.1) Max.250 (6.35).150 (3.8).100 (2.54).125 (3.17) Min.800 (20.3)