參數(shù)資料
型號： MAX9789CETJ+T
廠商： Maxim Integrated Products
文件頁數(shù)： 12/28頁
文件大小： 0K
描述： IC AMP AUDIO 2W STER AB 32TQFN
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： AB 類
輸出類型： 2-通道（立體聲）帶立體聲耳機(jī)
在某負(fù)載時最大輸出功率 x 通道數(shù)量： 2W x 2 @ 4 歐姆; 100mW x 2 @ 16 歐姆
電源電壓： 4.5 V ~ 5.5 V
特點： 消除爆音，靜音，短路保護(hù)和熱保護(hù)，關(guān)機(jī)
安裝類型： 表面貼裝
供應(yīng)商設(shè)備封裝： 32-TQFN-EP（5x5）
封裝/外殼： 32-WFQFN 裸露焊盤
包裝： 帶卷 (TR)
MAX9789/MAX9790
Windows Vista-Compliant, Stereo Class AB Speaker
Amplifiers and DirectDrive Headphone Amplifiers
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(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)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Supply Voltage (VDD, PVDD, HPVDD,
CPVDD to GND) ..................................................-0.3V to +6.0V
GND to PGND, CPGND ......................................................±0.3V
CPVSS, C1N, VSS to GND......................................-6.0V to +0.3V
HPR, HPL to GND ...............................................................±3.0V
Any Other Pin .............................................-0.3V to (VDD + 0.3V)
Duration of OUT_+, OUT_- Short Circuit
to GND or PVDD ......................................................Continuous
Duration of Short Circuit between OUT_+, OUT_-
and LDO_OUT.........................................................Continuous
Duration of Short Circuit between HPR, HPL and GND,
VSS or HPVDD..........................................................Continuous
Continuous Current (PVDD, OUT_+, OUT_-, PGND).............1.7A
Continuous Current (CPVDD, C1N, C1P, CPVSS, PVSS,
VDD, HPVDD, LDO_OUT, HPR, HPL) .............................850mA
Continuous Input Current (all other pins) .........................±20mA
Continuous Power Dissipation (TA = +70°C)
32-Pin Thin QFN Single-Layer Board
(derate 18.6mW/°C above +70°C) ..............................1489mW
θJA...........................................................................53.7°C/W
θJC...........................................................................19.9°C/W
32-Pin Thin QFN Multilayer Board
(derate 24.9 mW/°C above +70°C) .............................1990mW
θJA...........................................................................40.2°C/W
θJC...........................................................................19.9°C/W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
GENERAL
Supply Voltage
VDD, PVDD
Guaranteed by PSRR and LDO Line
Regulation Tests
4.5
5.5
V
Headphone Supply Voltage
CPVDD,
HPVDD
Guaranteed by PSRR Test
3.0
5.5
V
SPKR_EN
HP_EN
1 (MAX9789)
0 (MAX9789)
0.1
0.4
mA
1 (MAX9790)
0 (MAX9790)
0.3
6
A
11
7
13
0
14
29
Quiescent Current
IDD
0
1
18
40
mA
Shutdown Current
ISHDN
SPKR_EN = VDD, HP_EN = LDO_EN = GND
0.3
6
A
Bias Voltage
VBIAS
1.7
1.8
1.9
V
MAX9789A/MAX9789C/MAX9790A
100
Shutdown to Full Operation
tSON
MAX9789B/MAX9790B
25
ms
Gain Switching Time
tSW
10
s
Channel-to-Channel Gain
Tracking
±0.1
dB
SPEAKER AMPLIFIER
RL = 4
Ω
2
Output Power
POUT
THD+N = 1%, f = 1kHz,
TA = +25°C
RL = 8
Ω
1
W
RL = 8
Ω, POUT = 1W, f = 1kHz
0.002
Total Harmonic Distortion Plus
Noise
THD+N
RL = 4
Ω, POUT = 1W, f = 1kHz
0.004
%
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7 using a four-
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
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