APA4800
Stereo 290mW 8Ω Speaker Driver
Features
•
O perating Voltage Single Supply Dual Supply High Signal-to-Noise Ratio
Applications
• • •
Portable Digital Audio Personal Computers Microphone Preamplifier
3V to 7V ±1.5V to ± 3.5V 100dB
• • • • • • • • • • •
High Slew Rate 5V/ µs Low Distortion -65dB Output Power at 10% THD+N into 8Ω !!!!!!!!!!!!!! 290mW into 16Ω !!!!!!!!!!!!!! 190mW Large Output Voltage Swing Excellent Power Supply Ripple Rejection Low Power Consumption Short-circuit Elimination Wide Temperature Range No Switch ON/OFF Clicks Available in 8 pin SOP or DIP Package
Gereral Description
The APA4800 is an integrated class AB stereo headphone amplifier contained in an SO-8 or a DIP-8 plastic package . The APA4800 is capable of delivering 290mW of max . output power to an 8Ω load with less than 10% (THD+N) from a 5V power supply . The device has been primarily developed for portable digital audio applications .
Ordering Information
APA4800
Handling Code Temp. Range Package Code Package Code J : PDIP - 8 K : SOP - 8 Temp. Range I : - 40 to 85 °C Handling Code TU : Tube TR : Tape & Reel
Block Diagram
Out A Inverting Input A Non-inverting Input A VSS
1 8
VDD Out B Inverting Input B Non-inverting Input B
2
7
-+ +3 6 4 5
APA4800
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Copyright ANPEC Electronics Corp. Rev. A.2 - Apr., 2001 1 www.anpec.com.tw
APA4800
Absolute Maximum Ratings
Symbol VDD TSC (O) TA TJ TSTG TS VESD Parameter Supply Voltage Output Short-circuit Duration, at TA=25°C, PTOT=1W Operating Ambient Temperature range Maximum Junction Temperature Storage Temperature Range Soldering Temperature,10 seconds Electrostatic Discharge Rating 5 20 -40 to 85 150 -65 to +150 260 -3000 to 3000 *1 Unit V S °C °C °C °C V
Note: *1. Human body model : C=100pF, R=1500Ω, 3 positive pulses plus 3 negative pulses
Thermal Characteristics
Symbol RTHJA Parameter Thermal Resistance from Junction to Ambient in Free Air DIP-8 SO-8 Value 109 210 Unit K/W K/W
Electrical Characteristics
Symbol Parameter
TA=25°C, f=1kHz( unless otherwise noted)
Test Conditions Min. 2.7 APA4800 Typ. Max. 5.5 2.5 5 0.1 0.05 Unit V mA mV %
V DD Power Supply Voltage V DD=5V IDD Supply Current V I(OS) Input Offset Voltage AC Characteristics (THD+N)/S Total Harmonic Distortion plus Noise to Signal Ratio PO Output Power
No Load
50
P O = 200mW, RL=8Ω, f=1kHz P O = 120mW, RL=16Ω , f=1kHz (THD+N)/S=0.2%, f=1kHz RL=8Ω RL=16Ω
mW 210 140 mW 290 190 55 20 dB µVrms
PO
Output Power
(THD+N)/S=10%, f=1kHz RL=8Ω RL=16Ω
PSRR S/N
Power Supply Rejection CB=2.2 µF,V RIPPLE=200mVrms, Ratio f=120Hz Signal to Noise Ratio RL=8Ω
Copyright ANPEC Electronics Corp. Rev. A.2 - Apr., 2001
2
www.anpec.com.tw
APA4800
Electrical Characteristics Cont.
Symbol Parameter
TA=25°C, f=1kHz( unless otherwise noted)
APA4800 Min. Typ. Max. 2.2 5 0.15 Unit
Test Conditions
V DD=3V IDD Supply Current V I(OS) Input Offset Voltage AC Characteristics (THD+N)/S Total Harmonic Distortion plus Noise to Signal Ratio PO Output Power
No Load
mA mV %
P O = 50mW, RL=8Ω, f=1kHz P O = 40mW, RL=16Ω, f=1kHz (THD+N)/S=0.2%, f=1kHz RL=8Ω RL=16Ω
mW 60 45 mW 90 65
PO
Output Power
(THD+N)/S=10%, f=1kHz RL=8Ω RL=16Ω
Test And Application Circuits
VDD
220pF 220µF 15kΩ 1 2.2 µF 2 15kΩ 3 8 RL VOUTA
-+
VINA
VREF typ.1/2VDD VINB 2.2µF 15kΩ 5
APA4800
100µF
6
-+
7
4
15kΩ 220pF
VOUTB 220µF RL
Copyright ANPEC Electronics Corp. Rev. A.2 - Apr., 2001
3
www.anpec.com.tw
APA4800
Typical Characteristics
THD+N vs Output Power 10 VDD = 5V RL=8Ω AV= -1 BW
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