參數(shù)資料
型號： MAX9792CETI+T
廠商： Maxim Integrated Products
文件頁數(shù)： 30/34頁
文件大?。?/td> 0K
描述： IC AMP AUDIO 2.0W STER D 28TQFN
產(chǎn)品培訓模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 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
在某負載時最大輸出功率 x 通道數(shù)量： 3.7W x 1 @ 3 歐姆; 180mW x 2 @ 32 歐姆
電源電壓： 4.5 V ~ 5.5 V
特點： 消除爆音，LDO，短路保護和熱保護，關(guān)機
安裝類型： 表面貼裝
供應(yīng)商設(shè)備封裝： 28-TQFN-EP（4x4）
封裝/外殼： 28-WFQFN 裸露焊盤
包裝： 帶卷 (TR)
MAX9791/MAX9792
Windows Vista-Compliant Class D Speaker
Amplifiers with DirectDrive Headphone Amplifiers
_______________________________________________________________________________________
5
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
COM Input Range
VCOM
Inferred from CMRR test
-300
+300
mV
Common-Mode Rejection Ratio
CMRR
-300mV < VCOM < +300mV
60
dB
Slew Rate
SR
0.38
V/s
Charge-Pump Frequency
fOSC
530
kHz
BEEP INPUT (LDO_EN = 1)
Beep Signal Minimum
fBEEP
Four-cycle count
215
Hz
Amplifier Turn-On Time
tONBEEP
0.4
ms
Amplifier Hold Time
tHOLDBEEP
221
246
271
ms
LOW-DROPOUT LINEAR REGULATOR
LDO Ground Current
ILDO
0.25
0.4
mA
Output Current
IOUT
Inferred from load regulation
120
mA
Current Limit
ILIM
300
mA
Crosstalk
Speaker to LDO, VLDO_OUT = 4.75V,
f =1kHz, ILDO_OUT = 10mA, speaker POUT
= 1.2W, RL = 8
(Note 6)
-80
dB
VLDO_OUT = 4.75V
±1.5
Output-Voltage Accuracy
VLDO_OUT = 3.3V
±1.5
%
IOUT = 50mA
46
Dropout Voltage
VDO
VLDO_OUT = 4.75V,
TA = +25°C (Note 8)
IOUT = 120mA
106
mV
Startup Time
30
s
VAVDD = 5V to 5.5V, VLDO_OUT = 4.75V,
ILDO_OUT = 1mA, CLDO = 2F
-4.8
1.5
+4.8
VAVDD = 4.5V to 5.5V, VLDO_OUT = 3.3V,
ILDO_OUT = 1mA, CLDO = 2F
-4
0.2
+4
Line Regulation
VAVDD = 3V to 5.5V, VLDO_OUT = 1.8V,
ILDO_OUT = 1mA, CLDO = 4F
-6.4
2.5
+6.4
mV/V
Load Regulation
VLDO_OUT = 4.75V, 1mA < ILDO_OUT <
120mA
0.22
mV/mA
f = 1kHz
56
Ripple Rejection
VRIPPLE = 200mVP-P,
VLDO_OUT = 4.75V
ILDO_OUT = 10mA
f = 10kHz
40
dB
Output-Voltage Noise
20Hz to 20kHz, CLDO_OUT = 2 x 1F,
ILDO_OUT = 120mA
130
VRMS
DIGITAL INPUTS (
SPKR_EN, HP_EN, LDO_EN, BEEP)
Input-Voltage High
VINH
1.4
V
Input-Voltage Low
VINL
0.4
V
Input Bias Current
-1
+1
A
ELECTRICAL CHARACTERISTICS (continued)
(VAVDD = VPVDD = VHPVDD = 5V, VGND = VPGND = VCPGND = 0, ILDO_OUT = 0, CLDO = 2F (CLDO = 4F for 1.8V LDO option),
C1 = C2 = 1F. RL = ∞, unless otherwise specified. RIN1 = 20k (AVSPKR = 12dB), RIN2 = 40.2k (AVHP = 0dB), CIN1 = 470nF,
CIN2 =CCOM = 1F, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 3)
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