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Details, datasheet, quote on part number:LM4913MH
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| Part: | LM4913MH |
| Category: | Multimedia => Audio => Amplifiers => Power Amplifiers => Boomer Audio Power Amplifiers |
| Description: | LM4913 - 2W Monaural, 90mW Stereo Headphone Audio Amplifier, Package: Tssop Exp Pad, Pin Nb=10 |
| Company: | National Semiconductor Corporation |
| Datasheet: | Download LM4913MH datasheet File size : 785 kB |
| Request For quote: | Find where to buy LM4913MH
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Datasheet text preview:
LM4913 2W Monaural, 90mW Stereo Headphone Audio Amplifier
December 2002
LM4913 2W Monaural, 90mW Stereo Headphone Audio Amplifier
General Description
The unity-gain stable LM4913 is both a mono differential output (for bridge-tied loads, or BTL) audio power amplifier and a single-ended (SE) stereo headphone amplifier. Operating on a single 5V supply, the mono BTL mode delivers 2W (typ) to a 4 load (Note 1) at 0.3% THD+N. In SE stereo mode, the amplifier will deliver 90mW to 32 loads. The LM4913 features circuitry that suppresses output transients ("clicks and pops"). The LM4913 is designed for notebook and other handheld portable applications. It delivers high quality output power from a surface-mount package and requires few external components. The LM4913 is pin and functionally compatible with the TPA0213. Other features include an active-low micro-power shutdown mode and thermal shutdown protection. The LM4913 is available a space efficient 10-lead exposedDAP TSSOP package.
Note 1: When operating on a 5VDC supply, an LM4913MH that has been properly mounted to a circuit board will deliver 2W into 4. See the Application Information sections for further information concerning PCB layout suggestions to maximize the LM4913MH's output power with a 4 load.
Key Specifications
j BTL output power (RL = 4)
VDD = at 3.0V, THD = 1% VDD = at 5.0V, THD = 0.3% VDD = at 3.0V VDD = at 5.0V
j Micro-power shutdown supply current j PSRR ( @ 1kHz, 2.9V VDD
660mW (typ) 2W (typ) 33mW (typ) 90mW (typ) 1µA (typ)
j SE output power (RL = 32 and THD = 0.1%)
5.1V, (Fig. 1)) BTL SE
52dB (typ) 62dB (typ)
Features
n n n n n n n n Advanced "click and pop" suppression circuitry Stereo headphone amplifier mode Low current micro-power shutdown mode Thermal shutdown protection circuitry 2.5V to 5.5V operation Unity-gain stable Gain set with external resistors Space-saving exposed-DAP TSSOP package
Applications
n PDAs n Cellular phones n Handheld portable electronic devices
Connection Diagram
200617A0
Top View Order Number LM4913MH See NS package Number MXF10A
Boomer ® is a registered trademark of National Semiconductor Corporation.
© 2002 National Semiconductor Corporation
DS200617
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LM4913
Typical Application
20061799
FIGURE 1. Typical Audio Amplifier Application Circuit
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LM4913
Absolute Maximum Ratings
4)
(Notes 3,
Solder Information Small Outline Package Vapor Phase (60sec) Infrared (15sec) Thermal Resistance JA (MXF10A) 46°C/W (Note 8) 215°C 220°C
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 5) ESD Susceptibility (Note 6) ESD Susceptibility (Note 7) Junction Temperature 6.0V -65°C to +150°C -0.3V to VDD +0.3V Internally Limited 2000V 200V 150°C
Operating Ratings
Temperature Range TMIN TA TMAX Supply Voltage -40°C TA 85°C 2.5V VDD 5.5V
Electrical Characteristics for Entire Amplifier (VDD = 5V) (Notes 4, 9) The following specifications apply for the circuit shown in Figure 1 unless otherwise specified. Limits apply for TA = 25°C.
LM4913 Symbol Parameter Conditions Typical (Note 9) Limit (Notes 10, 11) 2.5 5.5 VIN = 0V, IO = 0A, No Load 4 1 8 6 50 5 VDD = 3V, CBYPASS = 0.47µF, Vripple = 200mVp-p 1kHz sine wave BTL, RL = 4 BTL, SE, RL = 32 30 Units (Limits) V (min) V (max) mA (max) µA (max) k mV (max)
VDD IDD ISD RIN VOS
Supply Voltage Quiescent Power Supply Current
Shutdown Quiescent Power Supply VSHUTDOWN = GND Current Input Resistance Output Offset Voltage
PSRR
Power Supply Rejection Ratio
58 60 4.5 2.75 2.0 0.8
dB dB V (min) V (max) V (min) V (max)
HP-SVIH HP-SVIL SDVIH SDVIL
HP-SENSE Logic-High Threshold Voltage HP-SENSE Logic-Low Threshold Voltage Shutdown Logic High Threshold Shutdown Logic LowThreshold
3
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