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參數(shù)資料
| 型號： | MAX9770ETI |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.2W Low-EMI, Filterless, Mono Class D Amplifier with Stereo DirectDrive Headphone Amplifiers |
| 中文描述： | 1.2 W, 2 CHANNEL, AUDIO AMPLIFIER, QCC28 |
| 封裝： | 5 X 5 MM, 0.80 MM HEIGHT, QFN-28 |
| 文件頁數(shù)： | 10/24頁 |
| 文件大?。?/td> | 493K |
| 代理商： | MAX9770ETI |
M
1.2W Low-EMI, Filterless, Mono Class D Amplifier
with Stereo DirectDrive Headphone Amplifiers
10
______________________________________________________________________________________
Detailed Desc ription
The MAX9770 combines a mono 1.2W Class D speaker
amplifier and stereo 80mW DirectDrive headphone
amplifiers with integrated headphone sensing and
comprehensive click-and-pop suppression. A
mixer/multiplexer allows for selection and mixing
between two stereo input sources and a single mono
source. The MAX9770 features a high 80dB PSRR, low
0.015% THD+N, industry-leading click/pop perfor-
mance, and a low-power shutdown mode.
Class D S peaker Amplifier
The MAX9770 Class D amplifier features a true filter-
less, low EMI, switch-mode architecture that provides
Class AB-like performance with Class D efficiency.
Comparators monitor the MAX9770 input and compare
the input voltage to a sawtooth waveform. The com-
parators trip when the input magnitude of the sawtooth
exceeds the corresponding input voltage. The com-
parator resets at a fixed time after the rising edge of the
second comparator trip point, generating a minimum-
PIN
TQFN
7
8
9
10
11
TSSOP
10
11
12
13
14
NAME
FUNCTION
CPV
DD
CPV
SS
C1N
C1P
CPGND
Positive Charge-Pump Power Supply
Charge-Pump Output. Connect to SV
SS
.
Charge-Pump Flying Capacitor Negative Terminal
Charge-Pump Flying Capacitor Positive Terminal
Charge-Pump Ground
12
15
SEL1
Select Stereo Channel 1 Inputs. Digital input. Drive SEL1 high to select inputs IN1_L and
IN1_R.
13
16
SEL2
Select Stereo Channel 2 Inputs. Digital input. Drive SEL2 high to select inputs IN2_L and
IN2_R.
14
17
SELM
Select Mono Channel Input. Digital input. Drive SELM high to select the MONO input.
15
18
SHDN
Shutdown. Drive
SHDN
low to disable the device. Connect
SHDN
to V
DD
for normal
operation.
16
19
SYNC
Frequency Select and External Clock Input.
SYNC = GND:
fixed-frequency PWM mode with f
S
= 1100kHz.
SYNC = Float:
fixed-frequency PWM mode with f
S
= 1450kHz.
SYNC = V
DD
:
spread-spectrum PWM mode with f
S
= 1220kHz
±
120kHz.
SYNC = Clocked:
fixed-frequency PWM mode with f
S
= external clock frequency.
17
18
19
20
21
22
23
24
25
26
27
28
EP
20
21
22
23
24
25
26
27
28
1
2
3
—
PGND
OUT+
OUT-
PV
DD
GAIN2
GAIN1
MONO
IN2_L
IN1_L
GND
IN2_R
IN1_R
EP
Speaker Amplifier Power Ground
Speaker Amplifier Positive Output
Speaker Amplifier Negative Output
Speaker Amplifier Power Supply
Gain Control Input 2
Gain Control Input 1
Mono Channel Input
Stereo Channel 2, Left Input
Stereo Channel 1, Left Input
Ground
Stereo Channel 2, Right Input
Stereo Channel 1, Right Input
Exposed Paddle. Can be left floating or tied to GND.
Pin Desc ription (c ontinued)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9770ETI+ | 功能描述:音頻放大器 1.2W Low-EMI Class D Amplifier RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX9770ETI+T | 功能描述:音頻放大器 1.2W Low-EMI Class D Amplifier RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX9770EUI | 制造商:Rochester Electronics LLC 功能描述: |
| MAX9770EUI+ | 功能描述:音頻放大器 1.2W Low-EMI Class D Amplifier RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX9770EUI+T | 功能描述:音頻放大器 1.2W Low-EMI Class D Amplifier RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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