參數(shù)資料
型號(hào): MAX9770ETI
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 音頻/視頻放大
英文描述: 1.2W Low-EMI, Filterless, Mono Class D Amplifier with Stereo DirectDrive Headphone Amplifiers
中文描述: 1.2 W, 2 CHANNEL, AUDIO AMPLIFIER, QCC28
封裝: 5 X 5 MM, 0.80 MM HEIGHT, QFN-28
文件頁(yè)數(shù): 4/24頁(yè)
文件大小: 493K
代理商: MAX9770ETI
10
0.001
10
100
10k
100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
0.01
0.1
1
M
FREQUENCY (Hz)
T
1k
V
DD
= +5V
R
L
= 4
P
OUT
= 25mW
P
OUT
= 1000mW
10
0.001
10
100
10k
100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
0.01
0.1
1
M
FREQUENCY (Hz)
T
1k
R
L
= 4
P
OUT
= 100mW
P
OUT
= 500mW
10
0.001
10
100
10k
100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
0.01
0.1
1
M
FREQUENCY (Hz)
T
1k
R
L
= 8
P
OUT
= 40mW
P
OUT
= 400mW
Typic al Operating Charac teristic s
(V
DD
= 3.3V, BW = 22Hz to 22kHz, GAIN1 = 1, GAIN2 = 0, spread-spectrum mode, headphone outputs in phase.)
M
1.2W Low-EMI, Filterless, Mono Class D Amplifier
with Stereo DirectDrive Headphone Amplifiers
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= PV
DD
= CPV
DD
= 3.3V, GND = PGND = CPGND = 0V,
SHDN
= 3.3V, C1 = C2 = 1μF, C
BIAS
= 0.047μF, SYNC = GND, R
L
=
,
speaker load connected between OUT+ and OUT-, headphone load connected between HPOUT_ and GND, T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C.) (Notes 1, 2)
PARAMETER
SYMBOL
C
L
CONDITIONS
MIN
TYP
1000
7
4
-2
1
MAX
UNITS
pF
Capacitive-Load Drive
GAIN1 = 0, GAIN2 = 0
GAIN1 = 0, GAIN2 = 1
GAIN1 = 1, GAIN2 = 0
GAIN1 = 1, GAIN2 = 1
Gain
A
V
dB
Gain Accuracy
ESD Protection
DIGITAL INPUTS (
SHDN
, SYNC, HPS, GAIN_, SEL_)
Input Voltage High
Input Voltage Low
±
2.5
%
kV
HPOUTR, HPOUTL, IEC Air Discharge
±
8
V
IH
V
IL
2
V
V
0.8
±
25
±
1
-10
SYNC input
All other logic inputs
HPS = GND
Input Leakage Current
μA
HPS Input Current
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
R
L
= 4
, L = 47μH. For R
L
= 8
, L = 68μH.
Note 3:
Guaranteed by design, not production tested.
Note 4:
PSRR is specified with the amplifier inputs connected to GND through C
IN
.
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