參數(shù)資料
型號(hào)： MAX9875ERP+T
廠商： Maxim Integrated Products
文件頁數(shù)： 2/30頁
文件大?。?/td> 0K
描述： IC AUDIO SUBSYSTEM 20UCSP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
系列： DirectDrive®
類型： D 類
輸出類型： 1-通道（單聲道），帶立體聲耳機(jī)
在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量： 825mW x 1 @ 4 歐姆; 53mW x 2 @ 16 歐姆
電源電壓： 2.7 V ~ 5.25 V
特點(diǎn)： 消除爆音，差分輸入，I²C，靜音，短路和熱保護(hù)，關(guān)機(jī)，音量控制
安裝類型： 表面貼裝
供應(yīng)商設(shè)備封裝： 20-UCSP
封裝/外殼： 20-WFBGA，CSPBGA
包裝： 帶卷 (TR)
MAX9875
Low RF Susceptibility, Mono Audio
Subsystem with DirectDrive Headphone Amplifier
10
______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VDD = VPVDD = 3.7V, VGND = VPGND = 0V. Single-ended inputs, preamp gain = 0dB, volume controls = 0dB, OSC = 00, SHDN = 1.
Speaker loads (ZSPK) connected between OUT+ and OUT-. Headphone loads (RHP) connected from HPL or HPR to GND. ZSPK =
∞, RHP = ∞. C1 = C2 = CBIAS = 1F. TA = +25°C, unless otherwise noted.)
IN-BAND OUTPUT SPECTRUM
MAX9875
toc28
FREQUENCY (kHz)
AMPLITUDE
(dBV)
15
10
5
0
-140
-80
-40
-120
-20
-60
-100
020
fOSC = 1100kHz
fIN = 1kHz
IN-BAND OUTPUT SPECTRUM
MAX9875
toc29
FREQUENCY (kHz)
AMPLITUDE
(dBV)
15
10
5
0
-140
-80
-40
-120
-20
-60
-100
020
fOSC = 700kHz
fIN = 1kHz
EFFICIENCY
vs. OUTPUT POWER
MAX9875
toc22
OUTPUT POWER (mW)
EFFICIENCY
(%)
100
0
50
60
10
80
30
70
20
90
40
01000
600
400
800
200
VDD = VPVDD = 3V
fIN = 1kHz
DASHED LINES ARE LIMITED
BY THE ABS. MAX RATINGS
ZSPK = 8 + 68H
ZSPK = 4 + 33H
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9875
toc23
SUPPLY VOLTAGE (V)
OUTPUT
POWER
(W)
5.0
4.5
4.0
3.5
3.0
2.0
2.5
0.5
1.0
1.5
3.0
3.5
0
2.5
5.5
10% THD+N
1% THD+N
VDD = VPVDD
ZSPK = 4 + 33H
DASHED LINES ARE LIMITED
BY THE ABS. MAX RATINGS
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9875
toc24
SUPPLY VOLTAGE (V)
OUTPUT
POWER
(W)
5.0
4.5
4.0
3.5
3.0
2.0
0.2
0.8
0.6
1.2
1.0
1.6
0.4
1.8
1.4
0
2.5
5.5
VDD = VPVDD
ZSPK = 8 + 68H
10% THD+N
1% THD+N
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9875
toc25
LOAD RESISTANCE (
)
OUTPUT
POWER
(W)
1.8
0.2
0.8
0.6
1.2
1.0
1.6
0.4
1.4
0
0100
70
40
10
80
50
20
90
60
30
VDD = VPVDD = 3.7V
fIN = 1kHz
ZSPK = LOAD + 68
H
10% THD+N
1% THD+N
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9875
toc26
LOAD RESISTANCE (
)
OUTPUT
POWER
(W)
1.2
0.2
0.8
0.6
1.0
0.4
0
0100
70
40
10
80
50
20
90
60
30
VDD = VPVDD = 3V
fIN = 1kHz
ZSPK = LOAD + 68
H
10% THD+N
1% THD+N
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9875
toc27
FREQUENCY (Hz)
PSRR
(dB)
10k
1k
100
-90
-70
-60
-40
-30
-10
-80
-50
-20
0
-100
10
100k
VDD = VPVDD = 3.7V
VRIPPLE = 100mVP-P
INPUTS AC-COUPLED TO GND
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