LM388 Datasheet | National Semiconductor

Description The LM388 is an audio amplifier designed for use in medium power consumer applications The gain is internally set to 20 to keep external part count low but the addition of an external resistor and capacitor between pins 2 and 6 will increase the gain to any value up to 200 The inputs are ground referenced while the output is automatically biased to one half the supply voltage Variable voltage gain Low distortion Fourteen pin dual-in-line package Low voltage operation 4V Applications Features Y Y Y Y Y Y Y Y Y Y Y Minimum external parts Wide supply voltage range Excellent supply rejection Ground referenced input Self-centering output quiescent voltage AM-FM radio amplifiers Portable tape player amplifiers Inters TV sound systems Lamp drivers Line drivers Ultrasonic drivers Small servo drivers Power converters Equivalent Schematic and Connection Diagrams Dual-In-Line Package TL H 7846 - 2 Top View Order Number LM388N-1 See NS Package Number N14A TL H 7846 - 1 C1995 National Semiconductor Corporation TL H 7846 RRD-B30M115 Printed in U S A Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage Package Dissipation 14-Pin DIP (Note 1) Input Voltage Storage Temperature 15V 8 3W g 0 4V Operating Temperature Junction Temperature Lead Temperature (Soldering 10 sec ) Thermal Resistance i JC i JA 0 C to a 70 C 150 C 260 C 30 C W 79 C W b 65 C to a 150 C Electrical Characteristics TA e 25 C (Figure 1) Symbol VS IQ POUT Parameter Operating Supply Voltage LM388 Quiescent Current LM388 Output Power (Note 2) LM388N-1 Voltage Gain Bandwidth Total Harmonic Distortion Power Supply Rejection Ratio (Note 3) Input Resistance Input Bias Current VS e 12V Pins 7 and 8 Open VIN e 0 VS e 12V R1 e R2 e 180X THD e 10% VS e 12V RL e 8X VS e 6V RL e 4X VS e 12V f e 1 k Hz 10 m F from Pins 2 to 6 VS e 12V Pins 2 and 6...