MAX9770(2004) 데이터 시트보기 (PDF) - Maxim Integrated
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MAX9770
(Rev.:2004)
(Rev.:2004)
Maxim Integrated
MAX9770 Datasheet PDF : 24 Pages
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1.2W Low-EMI, Filterless, Mono Class D Amplifier
with Stereo DirectDrive Headphone Amplifiers
Typical Operating Characteristics (continued)
(VDD = 3.3V, BW = 22Hz to 22kHz, GAIN1 = 1, GAIN2 = 0, spread-spectrum mode, headphone outputs in phase.)
EXITING SHUTDOWN
(HEADPHONE MODE)
MAX9770 toc40
RL = 32Ω
SHDN
2V/div
ENTERING SHUTDOWN
(HEADPHONE MODE)
MAX9770 toc41
RL = 32Ω
SHDN
2V/div
OUT_
2µs/div
10mV/div
OUT_
2µs/div
10mV/div
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
10
8
SPEAKER MODE
6
HEADPHONE MODE
4
2
0
2.5
3.5
4.5
5.5
SUPPLY VOLTAGE (V)
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
0.5
0.4
0.3
0.2
0.1
0
2.5
3.5
4.5
5.5
SUPPLY VOLTAGE (V)
PIN
TQFN TSSOP
1
4
2
5
3
6
4
7
5
8
6
9
Pin Description
NAME
BIAS
VDD
HPOUTR
HPOUTL
SVSS
HPS
FUNCTION
Common-Mode Bias Voltage. Bypass with a 0.047µF capacitor to GND.
Power Supply
Right-Channel Headphone Output
Left-Channel Headphone Output
Headphone Amplifier Negative Power Supply
Headphone Sense Input
_______________________________________________________________________________________ 9
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