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MAX9770 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX9770
Description  1.2W Low-EMI, Filterless, Mono Class D Amplifier with Stereo DirectDrive Headphone Amplifiers
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX9770 Datasheet(HTML) 4 Page - Maxim Integrated Products

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10
0.001
10
100
10k
100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
0.01
0.1
1
FREQUENCY (Hz)
1k
VDD = +5V
RL = 4
POUT = 25mW
POUT = 1000mW
10
0.001
10
100
10k
100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
0.01
0.1
1
FREQUENCY (Hz)
1k
RL = 4
POUT = 100mW
POUT = 500mW
10
0.001
10
100
10k
100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
0.01
0.1
1
FREQUENCY (Hz)
1k
RL = 8
POUT = 40mW
POUT = 400mW
Typical Operating Characteristics
(VDD = 3.3V, BW = 22Hz to 22kHz, GAIN1 = 1, GAIN2 = 0, spread-spectrum mode, headphone outputs in phase.)
1.2W Low-EMI, Filterless, Mono Class D Amplifier
with Stereo DirectDrive Headphone Amplifiers
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(VDD = PVDD = CPVDD = 3.3V, GND = PGND = CPGND = 0V, SHDN = 3.3V, C1 = C2 = 1µF, CBIAS = 0.047µF, SYNC = GND, RL =
∞,
speaker load connected between OUT+ and OUT-, headphone load connected between HPOUT_ and GND, TA = TMIN to TMAX,
unless otherwise noted. Typical values are at TA = +25°C.) (Notes 1, 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Capacitive-Load Drive
CL
1000
pF
GAIN1 = 0, GAIN2 = 0
7
GAIN1 = 0, GAIN2 = 1
4
GAIN1 = 1, GAIN2 = 0
-2
Gain
AV
GAIN1 = 1, GAIN2 = 1
1
dB
Gain Accuracy
±2.5
%
ESD Protection
HPOUTR, HPOUTL, IEC Air Discharge
±8kV
DIGITAL INPUTS (
SHDN, SYNC, HPS, GAIN_, SEL_)
Input Voltage High
VIH
2V
Input Voltage Low
VIL
0.8
V
SYNC input
±25
Input Leakage Current
All other logic inputs
±1
µA
HPS Input Current
HPS = GND
-10
µA
Note 1: All devices are 100% production tested at +25°C. All temperature limits are guaranteed by design.
Note 2: Speaker amplifier testing performed with a resistive load in series with an inductor to simulate an actual speaker load. For
RL = 4
Ω, L = 47µH. For RL = 8Ω, L = 68µH.
Note 3: Guaranteed by design, not production tested.
Note 4: PSRR is specified with the amplifier inputs connected to GND through CIN.


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