参数资料
型号: MAX9877EWP+TG45
厂商: Maxim Integrated Products
文件页数: 2/30页
文件大小: 0K
描述: IC AUDIO SUBSYSTEM 20-WLP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
系列: DirectDrive®
类型: D 类
输出类型: 1-通道(单声道),带立体声耳机
在某负载时最大输出功率 x 通道数量: 825mW x 1 @ 4 欧姆; 53mW x 2 @ 16 欧姆
电源电压: 2.7 V ~ 5.25 V
特点: 消除爆音,I²C,输入多路复用器,短路和热保护,关机,音量控制
安装类型: 表面贴装
供应商设备封装: 20-WLP
封装/外壳: 20-WFBGA,WLBGA
包装: 带卷 (TR)
MAX9877
Low RF Susceptibility, Mono Audio
Subsystem with DirectDrive Headphone Amplifier
10
______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VDD = PVDD = 3.7V, VGND = VPGND = 0V. Single-ended inputs, preamp gain = 0dB, volume controls = 0dB, OSC = 00, BYPASS =
0, 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
MAX9877
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
MAX9877
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
MAX9877
toc22
OUTPUT POWER (mW)
EFFICIENCY
(%)
100
0
50
60
10
80
30
70
20
90
40
0
1000
600
400
800
200
VDD = PVDD = 3V
fIN = 1kHz
DASHED LINES ARE LIMITED
BY THE ABS. MAX RATINGS
ZSPK = 8
Ω + 68μH
ZSPK = 4
Ω + 33μH
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9877
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 = PVDD
ZSPK = 4
Ω + 33μH
DASHED LINES ARE LIMITED
BY THE ABS. MAX RATINGS
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9877
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 = PVDD
ZSPK = 8
Ω + 68μH
10% THD+N
1% THD+N
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9877
toc25
LOAD RESISTANCE (
Ω)
OUTPUT
POWER
(W)
1.8
0.2
0.8
0.6
1.2
1.0
1.6
0.4
1.4
0
100
70
40
10
80
50
20
90
60
30
VDD = PVDD = 3.7V
fIN = 1kHz
ZSPK = LOAD + 68
μH
10% THD+N
1% THD+N
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9877
toc26
LOAD RESISTANCE (
Ω)
OUTPUT
POWER
(W)
1.2
0.2
0.8
0.6
1.0
0.4
0
100
70
40
10
80
50
20
90
60
30
VDD = PVDD = 3V
fIN = 1kHz
ZSPK = LOAD + 68
μH
10% THD+N
1% THD+N
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9877
toc27
FREQUENCY (Hz)
PSRR
(dB)
10k
1k
100
-90
-70
-60
-40
-30
-10
-80
-50
-20
0
-100
10
100k
VDD = PVDD = 3.7V
VRIPPLE = 100mVP-P
INPUTS AC-COUPLED TO GND
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