參數(shù)資料
型號: MAX9791CETI+T
廠商: Maxim Integrated Products
文件頁數(shù): 9/34頁
文件大小: 0K
描述: IC AMP AUDIO 2.2W STER D 28WQFN
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: D 類
輸出類型: 2-通道(立體聲)帶立體聲耳機和超低音器
在某負載時最大輸出功率 x 通道數(shù)量: 2.2W x 2 @ 4 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
______________________________________________________________________________________
17
MAX9791 Pin Description
PIN
NAME
FUNCTION
1
SPKR_INL
Left-Channel Speaker Amplifier Input
2
HP_INR
Right-Channel Headphone Amplifier Input
3
HP_INL
Left-Channel Headphone Amplifier Input
4
COM
Common-Mode Voltage Sense Input
5
GND
Signal Ground. Star connect to PGND.
6
LDO_OUT
LDO Output. Bypass the MAX9791A/MAX9791B with two 1F ceramic low ESR capacitors to GND.
Bypass the MAX9791C with two 2s ceramic low ESR capacitors to GND.
7
AVDD
Positive Power-Supply and LDO Input. Bypass with a 0.1F and two 1F capacitors to GND.
8
LDO_EN
LDO Enable. Connect LDO_EN to AVDD to enable the LDO.
9
HPR
Right-Channel Headphone Amplifier Output
10
HPL
Left-Channel Headphone Amplifier Output
11
SENSE
Headphone Ground Sense
12
CPVSS
Headphone Amplifier Negative Power Supply. Connect a 1F capacitor between CPVSS and PGND.
13
C1N
Charge-Pump Flying Capacitor Negative Terminal. Connect a 1F capacitor between C1P and C1N.
14
CPGND
Charge-Pump Ground. Connect directly to PGND plane.
15
C1P
Charge-Pump Flying Capacitor Positive Terminal. Connect a 1F capacitor between C1P and C1N.
16
HPVDD
Headphone Amplifier Positive Power Supply. Connect a 10F capacitor between HPVDD and PGND.
17, 26
PVDD
Speaker Amplifier Power-Supply Input. Bypass with a 0.1F capacitor to PGND.
18
OUTL-
Left-Channel Speaker Amplifier Output, Negative Phase
19
OUTL+
Left-Channel Speaker Amplifier Output, Positive Phase
20, 23
PGND
Power Ground. Star connect to GND.
21
BEEP
PC Beep Input. Connect to GND if beep detection function is disabled.
22
HP_EN
Active-High Headphone Amplifier Enable
24
OUTR+
Right-Channel Speaker Amplifier Output, Positive Phase
25
OUTR-
Right-Channel Speaker Amplifier Output, Negative Phase
27
SPKR_EN
Active-Low Speaker Amplifier Enable
28
SPKR_INR
Right-Channel Speaker Amplifier Input
EP
Exposed Pad. Connect to GND.
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