參數(shù)資料
型號: MAX9729ETI+T
廠商: Maxim Integrated Products
文件頁數(shù): 8/28頁
文件大?。?/td> 0K
描述: IC AMP AUDIO .052W STER 28TQFN
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 2,500
系列: DirectDrive®
類型: AB 類
輸出類型: 耳機,2-通道(立體聲)
在某負載時最大輸出功率 x 通道數(shù)量: 52mW x 2 @ 32 歐姆
電源電壓: 1.8 V ~ 3.6 V
特點: 帶低音增強模式,消除爆音,I²C,輸入多路復(fù)用器,短路和熱保護,關(guān)機,音量控制
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)
gains for the MAX9729. Figure 8 shows the volume
control transfer function for the MAX9729.
Use bits [B7:B5] in register 0x01 to set the BEEP input
attenuation. The BEEP input attenuation is adjustable to
one of eight different values ranging from -10dB to
-56dB (see Table 6).
Set B3 in register 0x01 to 1 to enable BassMax (see
Table 7). The output signal’s low-frequency response
will be boosted according to the external components
connected between OUT_ and BM_. See the
BassMax
Gain-Setting Components section for details on choos-
ing the external components.
Use bits [2:0] in register 0x01 to set the maximum gain
of the MAX9729 to one of eight different values ranging
from +3.5dB to +26dB (see Table 8). The maximum
gain setting in conjunction with the volume setting
determines the overall voltage gain of the MAX9729
(see Tables 5a, 5b, 5c).
MAX9729
Stereo Headphone Amplifier with BassMax,
Volume Control, and Input Mux
16
______________________________________________________________________________________
NACK
1
SLAVE ADDRESS
CONTENTS OF REGISTER 0x00
B1
B0
B3
B2
B5
B4
B7
B6
ACK
S
P
COMMAND BYTE IS
STORED AFTER ACK
STOP
CONDITION
START
CONDITION
FROM MAX9729
FROM MASTER DEVICE
R/W
FROM MAX9729
FROM MASTER DEVICE
Figure 7a. Read Data Format for Reading Register 0x00 Only
NACK
1
A
SLAVE ADDRESS
COMMAND BYTE FOR REGISTER 0x01
B1
B0
B3
B2
B5
B4
B7
B6
ACK
S
P
STOP
CONDITION
START
CONDITION
FROM MAX9729
FROM MASTER DEVICE
R/W
FROM MAX9729
COMMAND BYTE FOR REGISTER 0x00
B1
B0
B3
B2
B5
B4
B7
B6
FROM MASTER DEVICE
FROM MAX9729
FROM MASTER DEVICE
Figure 7b. Read Data Format for Reading Registers 0x00 and 0x01
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
0x00
SHUTDOWN
(see Table 3)
MUX/MIXER CONTROL
(see Table 4)
VOLUME CONTROL (see Table 5)
0x01
BEEP INPUT ATTENUATION (see Table 6)
1
BassMax
ENABLE
(see Table 7)
MAXIMUM GAIN CONTROL (see Table 8)
Table 2. MAX9729 Command Registers
Table 3. Shutdown Control (Register 0x00),
SHDN = VDD
B7
MODE
0
MAX9729 disabled
1
MAX9729 enabled
X
= Don’t Care.
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