参数资料
型号: MAX9789BETJ+T
厂商: Maxim Integrated Products
文件页数: 24/28页
文件大小: 0K
描述: IC AMP AUDIO 2W STER AB 32TQFN
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: 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: 2W x 2 @ 4 欧姆; 100mW x 2 @ 16 欧姆
电源电压: 4.5 V ~ 5.5 V
特点: 消除爆音,静音,短路保护和热保护,关机
安装类型: 表面贴装
供应商设备封装: 32-TQFN-EP(5x5)
封装/外壳: 32-WFQFN 裸露焊盘
包装: 带卷 (TR)
MAX9789/MAX9790
Windows Vista-Compliant, Stereo Class AB Speaker
Amplifiers and DirectDrive Headphone Amplifiers
_______________________________________________________________________________________
5
Note 2: All devices are 100% production tested at room temperature. All temperature limits are guaranteed by design.
Note 3: Specified at room temperature with an 8Ω resistive load connected across BTL output for speaker amplifier. Specified at
room temperature with a 32Ω resistive load connected between HPR, HPL, and GND for headphone amplifier. Speaker and
headphone mode transitions are controlled by SPKR_EN and HP_EN control pins, respectively.
Note 4: Amplifier inputs AC-coupled to GND.
Note 5: Maximum value is due to test limitations.
Note 6: VLDO_OUT = VLDO_OUTNOMINAL - 2%.
ELECTRICAL CHARACTERISTICS (continued)
(VDD = PVDD = CPVDD = HPVDD = HP_EN = VLDO_EN (MAX9789 only) = +5V, VGND = VPGND = VCPGND = SPKR_EN = VLDO_SET
(MAX9789 only) = 0V, ILDO_OUT (MAX9789 only) = 0, C1 = C2 = CBIAS = 1F. RL = ∞, unless otherwise specified, VGAIN1 = 0,
VGAIN2 = 5V (AVSP = 10dB, AVHP = 3.5dB), TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LDO_SET Input Bias Current
(Note 5)
ISET
±20
±500
nA
IOUT = 50mA
25
50
Dropout Voltage (Note 6)
VDO
VOUT = 4.75V (fixed
output operation),
TA = +25°C
IOUT = 120mA
75
150
mV
Current Limit
ILIM
300
mA
Startup Time
20
s
Line Regulation
VIN = 4.5V to 5.5V, LDO_OUT = 2.5V,
ILDO_OUT = 1mA
-4.8
+0.8
+4.8
mV/V
Load Regulation
VLDO_OUT = 4.75V,
1mA < ILDO_OUT < 120mA
0.2
mV/mA
f = 1kHz
59
Ripple Rejection
VRIPPLE = 200mVP-P
ILDO_OUT = 10mA
f = 10kHz
42
dB
Output Voltage Noise
20Hz to 22kHz, CLDO_OUT = 2 x 1F,
ILDO_OUT = 120mA
125
VRMS
DIGITAL INPUTS (
SPKR_EN, HP_EN, MUTE, GAIN1, GAIN2, LDO_EN (MAX9789 Only))
Input-Voltage High
VINH
2V
Input-Voltage Low
VINL
0.8
V
Input Bias Current
±1
A
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