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HWD4863 Dual 2.2W Audio Amplifier Plus Stereo Headphone Function
HWD4863 Dual 2.2W Audio Amplifier Plus Stereo Headphone Function
General Description
TheHWD4863 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.2W to a 4Ω load (Note 1) or 2.5W to a 3Ω load (Note 2) with less than 1.0% THD+N. In addition, the headphone input pin allows the amplifiers to operate in single-ended mode when driving stereo headphones. Boomer audio power amplifiers were designed specifically to provide high quality output power from a surface mount package while requiring few external components. To simplify audio system design, theHWD4863 combines dual bridge speaker amplifiers and stereo headphone amplifiers on one chip. TheHWD4863 features an externally controlled, low-power consumption shutdown mode, a stereo headphone amplifier mode, and thermal shutdown protection. It also utilizes circuitry to reduce “clicks and pops” during device turn-on.
Note 1: AnHWD4863MTE or HWD4863LQ that has been properly mounted to a circuit board will deliver 2.2W into 4Ω. The other package options for the HWD4863 will deliver 1.1W into 8Ω. See the Application Information sections for further information concerning theHWD4863MTE and HWD4863LQ. Note 2: AnHWD4863MTE or HWD4863LQ that has been properly mounted to a circuit board and forced-air cooled will deliver 2.5W into 3Ω.
Key Specifications
n PO at 1% THD+N n HWD4863LQ, 3Ω, 4Ω loads 2.5W(typ), 2.2W(typ) n HWD4863MTE, 3Ω, 4Ω loads 2.5W(typ), 2.2W(typ) n HWD4863MTE, 8Ω load 1.1W(typ) n HWD4863, 8Ω 1.1W(typ) n Single-ended mode THD+N at 75mW into 32Ω 0.5%(max) n Shutdown current 0.7µA(typ) n Supply voltage range 2.0V to 5.5V
Features
n n n n n Stereo headphone amplifier mode “Click and pop” suppression circuitry Unity-gain stable Thermal shutdown protection circuitry SOIC, DIP, TSSOP and exposed-DAP TSSOP and LLP packages
Applications
n Multimedia monitors n Portable and desktop computers n Portable televisions
Typical Application
Note: Pin out shown for DIP and SO packages. Refer to the Connection Diagrams for the pinout of the TSSOP, Exposed-DAP TSSOP, and Exposed-DAP LLP packages.
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HWD4863
Connection Diagrams
01288128
Top View Order Number HWD4863M, HWD4863N See HWD Package Number M16B for SO See HWD Package Number N16E for DIP
01288129
Top View Order Number HWD4863MT See HWD Package Number MTC20 for TSSOP
01288102
Top View Order Number HWD4863MTE See HWD Package Number MXA20A for Exposed-DAP TSSOP
01288130
Top View Order Number HWD4863LQ See HWD Package Number LQA24A for Exposed-DAP LLP
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HWD4863
Absolute Maximum Ratings
(Note 3)
θJC (typ) — M16B θJA (typ) — M16B θJC (typ) — N16A θJA (typ) — N16A
20˚C/W 80˚C/W 20˚C/W 63˚C/W 20˚C/W 80˚C/W 2˚C/W 41˚C/W (Note 7) 51˚C/W (Note 8) 90˚C/W(Note 9) 3.0˚C/W 42˚C/W (Note 10)
Supply Voltage Storage Temperature Input Voltage Power Dissipation (Note 4) ESD Susceptibility(Note 5) ESD Susceptibility (Note 6) Junction Temperature Solder 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 2000V 200V 150˚C
θJC (typ) — MTC20 θJA (typ) — MTC20 θJC (typ) — MXA20A θJA (typ) — MXA20A θJA (typ) — MXA20A θJA (typ) — MXA20A θJC (typ) — LQ24A θJA (typ) — LQ24A
215˚C 220˚C
Operating Ratings
Temperature Range TMIN ≤ TA ≤ TMAX Supply Voltage −40˚C ≤ TA ≤ 85˚C 2.0V ≤ VDD ≤ 5.5V
See AN-450 “Surface Mounting and their Effects on Product Reliablilty” for other methods of soldering surface mount devices. Thermal Resistance
Electrical Characteristics for Entire IC (Notes 3, 11)
The following specifications apply for VDD = 5V unless otherwise noted. Limits apply for TA = 25˚C. Symbol Parameter Conditions HWD4863 Typical (Note 12) VDD IDD Supply Voltage Quiescent Power Supply Current VIN = 0V, IO = 0A (Note 14), HP-IN = 0V VIN = 0V, IO = 0A (Note 14), HP-IN = 4V ISD VIH VIL Shutdown Current Headphone High Input Voltage Headphone Low Input Voltage VDD applied to the SHUTDOWN pin 11.5 5.8 0.7 2 4 0.8 Limit (Note 13) 2 5.5 20 6 V (min) V (max) mA (max) mA (min) mA µA (min) V (min) V (max) Units (Limits)
Electrical Characteristics for Bridged-Mode Operation (Notes 3, 11)
The following specifications apply for VDD = 5V unless otherwise specified. Limits apply for TA = 25˚C. Symbol Parameter Conditions HWD4863 Typical (Note 12) VOS PO Output Offset Voltage Output Power (Note 15) VIN = 0V THD+N = 1%, f = 1kHz (Note 16) HWD4863MTE, R L = 3Ω HWD4863LQ, RL = 3Ω HWD4863MTE, RL = 4Ω HWD4863LQ, RL = 4Ω HWD4863, RL = 8Ω THD+N = 10%, f = 1kHz (Note 16) HWD4863MTE, R L = 3Ω HWD4863LQ, R L = 3Ω 3.2 3.2 W W 5 2.5 2.5 2.2 2.2 1.1 1.0 Limit (Note 13) 50 Units (Limits)
mV (max) W W W W W (min)
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HWD4863
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Electrical Characteristics for Bridged-Mode Operation (Notes 3, 11)
The following specifications apply for VDD = 5V unless otherwise specified. Limits ap.