BassMax, I2C, Volume and Gain Control
參數(shù)資料
型號(hào)： MAX9726BETP+T
廠商： Maxim Integrated Products
文件頁數(shù)： 19/24頁
文件大小： 0K
描述： IC AMP AUDIO .124W STER 20TQFN
標(biāo)準(zhǔn)包裝： 2,500
系列： DirectDrive®
類型： AB 類
輸出類型： 耳機(jī)，2-通道（立體聲）
在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量： 124mW x 2 @ 16 歐姆
電源電壓： 2.7 V ~ 5.5 V
特點(diǎn)： 低音增強(qiáng)模式，消除爆音，I²C，靜音，短路和熱保護(hù)，關(guān)機(jī)，音量控制
安裝類型： 表面貼裝
供應(yīng)商設(shè)備封裝： 20-TQFN-EP（4x4）
封裝/外殼： 20-WFQFN 裸露焊盤
包裝： 帶卷 (TR)
MAX9726
DirectDrive, Headphone Amplifier with
BassMax, I2C, Volume and Gain Control
4
_______________________________________________________________________________________
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
f = 1kHz, 100mVP-P ripple
85
Power-Supply Rejection Ratio
(Note 2)
PSRR
f = 20kHz, 100mVP-P ripple
73
dB
BW = 22Hz to 22kHz
101
Signal-to-Noise Ratio
SNR
RL = 32
Ω,
VOUT = 1.5VRMS
A-weighted
104
dB
Into shutdown
62
Click-and-Pop Level
KCP
Peak voltage,
A-weighted, 32
samples per
second
(Notes 2, 4)
Out of shutdown
67
dBV
ELECTRICAL CHARACTERISTICS (3.3V Supply) (continued)
(VDD = SHDN = 3.3V, PGND = SGND = 0V, C1 = C2 = 1F, CPREG = CNREG = 1F, BM_ = 0V, RIN = 10kΩ, RF = 10kΩ, maximum
volume (overall gain = 0dB), BassMax disabled. Load connected between OUT_ and PGND where specified. TA = TMIN to TMAX,
unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Serial Clock Frequency
fSCL
0
400
kHz
Bus Free Time Between a STOP and a
START Condition
tBUF
1.3
s
Hold Time Repeated for a START
Condition
tHD:STA
0.6
s
Low Period of the SCL Clock
tLOW
1.3
s
High Period of the SCL Clock
tHIGH
0.6
s
Setup Time for a Repeated START
Condition
tSU:STA
0.6
s
Data Hold Time
tHD:DAT
0
0.9
s
Data Setup Time
tSU:DAT
100
ns
Rise Time of Both SDA and SCL Signals
tr
300
ns
Fall Time of Both SDA and SCL Signals
tf
300
ns
Setup Time for STOP Condition
tSU:STO
0.6
s
Pulse Width of Suppressed Spike
tSP
50
ns
Capacitive Load for Each Bus Line
CL_BUS
400
pF
TIMING CHARACTERISTICS
(VDD = SHDN = 5V, PGND = SGND = 0V, C1 = C2 = 1F, CPREG = CNREG = 1F, BM_ = 0V, RIN = 10kΩ, RF = 10kΩ, maximum vol-
ume (overall gain = 0dB), BassMax disabled. Load connected between OUT_ and PGND where specified. TA = TMIN to TMAX, unless
otherwise noted. Typical values are at TA = +25°C.) (Notes 1, 3)
Note 1: All specifications are 100% tested at TA = +25°C. Temperature limits are guaranteed by design.
Note 2: Inputs AC-coupled to SGND.
Note 3: Guaranteed by design.
Note 4: Headphone testing performed with a 32Ω resistive load connected to PGND. Mode transitions are controlled by SHDN. KCP
level is calculated as 20log[(peak voltage during mode transition, no input signal)/1VRMS]. Units are expressed in dBV.
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