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參數(shù)資料
| 型號： | MAX9770ETI+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 12/22頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP AUDIO 1.2W MONO D 28TQFN |
| 標準包裝： | 2,500 |
| 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： | 1.2W x 1 @ 8 歐姆; 80mW x 2 @ 16 歐姆 |
| 電源電壓： | 2.5 V ~ 5.5 V |
| 特點： | 消除爆音，輸入多路復(fù)用器，靜音，短路和熱保護，關(guān)機 |
| 安裝類型： | 表面貼裝 |
| 供應(yīng)商設(shè)備封裝： | 28-TQFN-EP（5x5） |
| 封裝/外殼： | 28-WFQFN 裸露焊盤 |
| 包裝： | 帶卷 (TR) |
MAX9770
1.2W, Low-EMI, Filterless, Mono Class D Amplifier
with Stereo DirectDrive Headphone Amplifiers
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VDD = PVDD = CPVDD = 3.3V, GND = PGND = CPGND = 0V, SHDN = 3.3V, C1 = C2 = 1F, CBIAS = 0.047F, SYNC = GND, RL =
∞,
speaker load connected between OUT+ and OUT-, headphone load connected between HPOUT_ and GND, TA = TMIN to TMAX,
unless otherwise noted. Typical values are at TA = +25°C.) (Notes 1, 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.
GND to PGND to CPGND......................................-0.3V to +0.3V
VDD to PVDD to CPVDD..........................................-0.3V to +0.3V
VDD to GND ...........................................................................+6V
PVDD to PGND .......................................................................+6V
CPVDD to CPGND..................................................................+6V
CPVSS to CPGND....................................................................-6V
SVSS to GND ...........................................................................-6V
C1N..........................................(PVSS - 0.3V) to (CPGND + 0.3V)
HPOUT_ to GND ....................................................................
±3V
All Other Pins to GND.................................-0.3V to (VDD + 0.3V)
Continuous Current Into/Out of:
PVDD, PGND, OUT_ ......................................................600mA
PVSS ..............................................................................260mA
Duration of HPOUT_ Short Circuit to VDD, PVDD,
GND, PGND ...........................................................Continuous
Duration of Short Circuit Between
HPOUTL and HPOUTR ..........................................Continuous
Duration of OUT_ Short Circuit to VDD, PVDD, GND, PGND ..10s
Duration of Short Circuit Between OUT+ and OUT-...............10s
Continuous Power Dissipation (TA = +70°C)
28-Pin TQFN (derate 20.8mW/°C above +70°C) .......1667mW
28-Pin TSSOP (derate 12.8mW°C above +70°C) ......1026mW
Junction Temperature ......................................................+150°C
Operating Temperature Range ...........................-40°C to +85°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 Range
VDD
Inferred from PSRR test
2.5
5.5
V
Headphone mode
5.5
10
Quiescent Supply Current
IDD
No load
Speaker mode
5.2
7.5
mA
Shutdown Supply Current
ISHDN
SHDN = HPS = GND
0.1
10
A
Shutdown to Full Operation
tON
50
ms
MONO
7
10
Input Impedance
RIN
(Note 3)
INL_, INR_
14
20
k
Ω
Bias Voltage
VBIAS
1.1
1.25
1.4
V
Feedthrough
From any unselected input to any output,
f = 10kHz
70
dB
SPEAKER AMPLIFIER (GAIN1 = GAIN2 = VDD, HPS = GND)
Output Offset Voltage
VOS
±15
±70
mV
VDD = 2.5V to 5.5V,
TA = +25°C
50
70
VRIPPLE = 200mVP-P, f = 217Hz
70
VRIPPLE = 200mVP-P, f = 1kHz
68
Power-Supply Rejection Ratio
PSRR
(Note 4)
VRIPPLE = 200mVP-P, f = 20kHz
50
dB
RL = 8
Ω
550
VDD = 3.3V
RL = 4
Ω
900
Output Power
POUT
f = 1kHz,
THD+N = 1%,
GAIN1 = 1,
GAIN2 = 0
VDD = 5V
RL = 8
Ω
1200
mW
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