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Details, datasheet, quote on part number:LM4880MX
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| Part: | LM4880MX |
| Category: | Multimedia => Audio => Amplifiers => Power Amplifiers => Boomer Audio Power Amplifiers |
| Description: | LM4880 - Dual 200 MW Audio Power Amplifier With Shutdown Mode, Package: Soic Narrow, Pin Nb=8 |
| Company: | National Semiconductor Corporation |
| Datasheet: | Download LM4880MX datasheet File size : 382 kB |
| Request For quote: | Find where to buy LM4880MX
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Datasheet text preview:
LM4880 Boomer Audio Power Amplifier Series Dual 250 mW Audio Power Amplifier with Shutdown Mode
August 2000
LM4880 Dual 250 mW Audio Power Amplifier with Shutdown Mode
General Description
The LM4880 is a dual audio power amplifier capable of delivering typically 250mW per channel of continuous average power to an 8 load with 0.1% THD+N using a 5V power supply. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components using surface mount packaging. Since the LM4880 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The LM4880 features an externally controlled, low-power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism. The unity-gain stable LM4880 can be configured by external gain-setting resistors. n THD+N at 1kHz at 85mW continuous average output power into 32: 0.1% (typ) n Output power at 10% THD+N at 1kHz into 8: 325mW (typ) n Shutdown current: 0.7µA (typ) n 2.7V to 5.5V supply voltage range
Features
n No bootstrap capacitors or snubber circuits are necessary n Small Outline (SO) and DIP packaging n Unity-gain stable n External gain configuration capability
Applications
n Headphone Amplifier n Personal Computers n CD-ROM Players
Key Specifications
n THD+N at 1kHz at 200mW continuous average output power into 8: 0.1% (max)
Typical Application
DS012343-1
*Refer to the Application Information section for information concerning proper selection of the input and output coupling capacitors.
FIGURE 1. Typical Audio Amplifier Application Circuit
Boomer ® is a registered trademark of National Semiconductor Corporation.
© 2000 National Semiconductor Corporation
DS012343
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LM4880
Connection Diagram
Small Outline and DIP Packages
DS012343-2
Top View Order Number LM4880M or LM4880N See NS Package Number M08A for SO or NS Package Number N08E for DIP
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LM4880
Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Storage Temperature Input Voltage Power Dissipation (Note 3) ESD Susceptibility (Note 4) ESD Susceptibility (Note 5) Junction Temperature Soldering Information Small Outline Package Vapor Phase (60 sec.) Infrared (15 sec.) 6.0V -65°C to +150°C -0.3V to VDD + 0.3V Internally limited 3500V 250V 150°C
See AN-450 "Surface Mounting and their Effects on Product Reliability" for other methods of soldering surface mount devices. Thermal Resistance 37°C/W JC (DIP) 107°C/W JA (DIP) 35°C/W JC (SO) 170°C/W JA (SO)
Operating Ratings
Temperature Range TMINTATMAX Supply Voltage -40°CTA+85°C 2.7VVDD5.5V
215°C 220°C
Electrical Characteristics (Notes 1, 2)
The following specifications apply for VDD = 5V unless otherwise specified. Limits apply for TA = 25°C. Symbol Parameter Conditions LM4880 Typical (Note 6) VDD IDD ISD VOS PO Supply Voltage Quiescent Power Supply Current Shutdown Current Output Offset Voltage Output Power VIN = 0V, IO = 0A VPIN5 = VDD VIN = 0V THD = 0.1% (max); f = 1 kHz; RL = 8 RL = 32 THD+N = 10%; f = 1 kHz RL = 8 RL = 32 THD+N Total Harmonic Distortion+Noise RL = 8, PO = 200 mW; RL = 32, PO = 75 mW; f = 1 kHz PSRR Power Supply Rejection Ratio CB = 1.0 µF, VRIPPLE = 200 mVrms, f = 100 Hz 50 dB 325 110 0.03 0.02 mW mW % % 250 85 200 mW (min) mW 3.6 0.7 5 Limit (Note 7) 2.7 5.5 6.0 5 50 V (min) V (max) mA (max) µA (max) mV (max) Units (Limits)
Note 1: All voltages are measured with respect to the ground pin, unless otherwise specified. Note 2: Absolute Maximum Ratings indicate limits beyond which damage may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is given, however, the typical value is a good indication of device performance. Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, JA, and the ambient temperature TA. The maximum allowable power dissipation is PDMAX = (TJMAX - TA)/JA or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4880, TJMAX = 150°C, and the typical junction-to-ambient thermal resistance is 170°C/W for package M08A and 107°C/W for package N08E. Note 4: Human body model, 100 pF discharged through a 1.5 k resistor. Note 5: Machine model, 220 pF 240 pF discharged through all pins. Note 6: Typicals are measured at 25°C and represent the parametric norm. Note 7: Limits are guaranteed to National's AOQL (Average Outgoing Quality Level).
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