Datasheet LM4780, LM4780TABD (Texas Instruments) - 4

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LM4780, LM4780TABD
SNAS193B – JULY 2003 – REVISED APRIL 2013
www.ti.com Absolute Maximum Ratings(1)(2)(3)
Supply Voltage |V+| + |V-| (No Signal) 94V Supply Voltage |V+| + |V-| (Input Signal) 84V Common Mode Input Voltage (V+ or V-) and |V+| + |V-| ≤ 80V Differential Input Voltage(4) 60V Output Current Internally Limited Power Dissipation(5) 125W ESD Susceptability(6) 3.0kV ESD Susceptability(7) 200V Junction Temperature (TJMAX)(8) 150°C Soldering Information TA Package (10 seconds) 260°C Storage Temperature -40°C to +150°C θJA 30°C/W Thermal Resistance θJC 0.8°C/W (1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not specified for parameters where no limit is given; however, the typical value is a good indication of device performance. (2) All voltages are measured with respect to the ground pins, unless otherwise specified. (3) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and specifications. (4) The Differential Input Voltage Absolute Maximum Rating is based on supply voltages V+ = 40V and V-= - 40V. (5) The maximum power dissipation must be de-rated at elevated temperatures and is dictated by TJMAX, θJC, and the ambient temperature TA. The maximum allowable power dissipation is PDMAX = (TJMAX -TA) / θJC or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4780, TJMAX = 150°C and the typical θJC is 0.8°C/W. Refer to the THERMAL PROTECTION section for more information. (6) Human body model, 100pF discharged through a 1.5kΩ resistor. (7) Machine Model: a 220pF - 240pF discharged through all pins. (8) The maximum operating junction temperature is 150°C. However, the instantaneous Safe Operating Area temperature is 250°C.
Operating Ratings(1)(2)(3)
Temperature Range TMIN ≤ TA ≤ TMAX −20°C ≤ TA ≤ +85°C Supply Voltage |V+| + |V-| 20V ≤ VTOTAL ≤ 84V (1) All voltages are measured with respect to the ground pins, unless otherwise specified. (2) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not specified for parameters where no limit is given; however, the typical value is a good indication of device performance. (3) Operation is specified up to 84V; however, distortion may be introduced from
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protection circuitry if proper thermal considerations are not taken into account. Refer to the THERMAL PROTECTION section for more information. 4 Submit Documentation Feedback Copyright © 2003–2013, Texas Instruments Incorporated Product Folder Links: LM4780 LM4780TABD Document Outline Features Applications Key Specifications Description Typical Application Connection Diagram Absolute Maximum Ratings Operating Ratings Electrical Characteristics Bridged Amplifier Application Circuit Parallel Amplifier Application Circuit Single Supply Application Circuit Auxiliary Amplifier Application Circuit External Components Description Optional External Component Interaction Typical Performance Characteristics Application Information MUTE MODE UNDER-VOLTAGE PROTECTION OVER-VOLTAGE PROTECTION SPiKe PROTECTION THERMAL PROTECTION DETERMlNlNG MAXIMUM POWER DISSIPATION DETERMINING THE CORRECT HEAT SINK SUPPLY BYPASSING BRIDGED AMPLIFIER APPLICATION PARALLEL AMPLIFIER APPLICATION SINGLE-SUPPLY AMPLIFIER APPLICATION CLICKS AND POPS PROPER SELECTION OF EXTERNAL COMPONENTS HIGH PERFORMANCE CONSIDERATIONS SIGNAL-TO-NOISE RATIO LEAD INDUCTANCE PHYSICAL IC MOUNTING CONSIDERATIONS LAYOUT, GROUND LOOPS AND STABILITY REACTIVE LOADING INVERTING AMPLIFIER APPLICATION LM4780 REFERENCE BOARD ARTWORK Bill Of Materials For Reference Pcb Revision History Page 1