参数资料
型号: MAX9750CETI+
厂商: Maxim Integrated Products
文件页数: 25/30页
文件大小: 0K
描述: IC AMP AUDIO PWR 2.6W AB 28TQFN
标准包装: 60
系列: DirectDrive®
类型: AB 类
输出类型: 2-通道(立体声)带立体声耳机
在某负载时最大输出功率 x 通道数量: 2.2W x 2 @ 3 欧姆; 110mW x 2 @ 16 欧姆
电源电压: 4.5 V ~ 5.5 V
特点: 消除爆音,短路保护和热保护,关机,音量控制
安装类型: 表面贴装
供应商设备封装: 28-TQFN-EP(5x5)
封装/外壳: 28-WFQFN 裸露焊盘
包装: 管件
MAX9750/MAX9751/MAX9755
2.6W Stereo Audio Power Amplifiers and
DirectDrive Headphone Amplifiers
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(VDD = PVDD = CPVDD = HPVDD = 5V, VGND = VPGND = VCPGND = 0V, SHDN = VDD, CBIAS = 1F, C1 = C2 = 1F, speaker load
terminated between OUT_+ and OUT_-, headphone load terminated between HPOUT_ and GND, VGAIN1 = VGAIN2 = VVOL = VGAIN = 0V,
TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
HEADPHONE AMPLIFIER (HPS = VDD)
Output Offset Voltage
VOS
TA = +25°C
±2
±7mV
HPVDD = 3V to 5.5V, TA = +25°C
60
75
f = 1kHz, VRIPPLE = 200mVP-P
73
Power-Supply Rejection Ratio
(Note 3)
PSRR
f = 10kHz, VRIPPLE = 200mVP-P
63
dB
RL = 32
Ω
40
50
Output Power
POUT
THD+N = 1%,
f = 1kHz, TA = +25°C
RL = 16
Ω
110
mW
RL = 32
Ω, POUT = 20mW, f = 1kHz
0.007
Total Harmonic Distortion Plus
Noise
THD+N
RL = 16
Ω, POUT = 75mW, f = 1kHz
0.03
%
Signal-to-Noise Ratio
SNR
RL = 32
Ω, POUT = 50mW, BW = 22Hz to
22kHz
101
dB
Noise
Vn
BW = 22Hz to 22kHz
11
VRMS
Capacitive-Load Drive
CL
No sustained oscillations
200
pF
Crosstalk
L to R, R to L, f = 10kHz
88
Off-Isolation
Any unselected input to any active input,
f = 10kHz (MAX9751), input referred
74
dB
Slew Rate
SR
0.4
V/s
ESD
IEC air discharge
±8
kV
GAIN2 = GAIN = 0, GAIN1 = X
3
Gain
AV
GAIN2 = GAIN = 1, GAIN1 = X
0
dB
CHARGE PUMP
Charge-Pump Frequency
fOSC
500
550
600
kHz
VOLUME CONTROL (MAX9750_)
VOL Input Impedance
RVOL
100
M
Ω
VOL Input Hysteresis
10
mV
Full Mute Input Voltage
(Note 5)
0.858 x
HPVDD
V
Channel Matching
AV = -25dB to +13.5dB
±0.2
dB
BEEP INPUT (MAX9750_)
Beep Signal Minimum Amplitude
VBEEP
RB = 33k
Ω (Note 6)
0.8
VP-P
Beep Signal Minimum Frequency
fBEEP
300
Hz
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