參數(shù)資料
型號(hào)： MAX9724BETC+T
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 13/19頁(yè)
文件大?。?/td> 0K
描述： IC AMP AUDIO .045W STER 12TQFN
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： 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： 63mW x 2 @ 32 歐姆
電源電壓： 2.7 V ~ 5.5 V
特點(diǎn)： 消除爆音，短路保護(hù)和熱保護(hù)，關(guān)閉
安裝類型： 表面貼裝
供應(yīng)商設(shè)備封裝： 12-TQFN EP（3x3）
封裝/外殼： 12-WQFN 裸露焊盤
包裝： 帶卷 (TR)
配用： MAX9724AEVKIT+-ND - EVALUATION KIT FOR MAX9724A/B
MAX9724DEVKIT+-ND - KIT EVAL FOR MAX9724D
MAX9724A/MAX9724B
60mW, DirectDrive, Stereo Headphone Amplifier
with Low RF Susceptibility and Shutdown
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 5V, PGND = SGND, SHDN = 5V, C1 = C2 = 1F, RL = ∞, resistive load reference to ground; for MAX9724A gain = -1.5V/V
(RIN = 20kΩ, RF = 30kΩ); for MAX9724B gain = -1.5V/V (internally set), TA = -40°C to +85°C, unless otherwise noted. Typical values
are at TA = +25°C, unless otherwise noted.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Slew Rate
SR
0.5
V/s
Capacitive Drive
CL
No sustained oscillations
100
pF
Crosstalk
L to R, R to L, f = 10kHz, RL = 16
Ω,
POUT = 15mW
-70
dB
Charge-Pump Oscillator
Frequency
fOSC
190
270
400
kHz
Into shutdown
-67
Click-and-Pop Level
KCP
RL = 32
Ω, peak voltage,
A-weighted, 32 samples per
second (Notes 4, 7)
Out of
shutdown
-64
dB
DIGITAL INPUTS (
SHDN)
Input-Voltage High
VINH
(TQFN only)
2
V
Input-Voltage Low
VINL
(TQFN only)
0.8
V
Input-Voltage High
VINH
(UCSP only)
1.4
V
Input-Voltage Low
VINL
(UCSP only)
0.9
V
Input Leakage Current
±1
A
ELECTRICAL CHARACTERISTICS
(VDD = 3V, PGND = SGND, SHDN = 3V, C1 = C2 = 1F, RL = ∞, resistive load reference to ground; for MAX9724A gain = -1.5V/V
(RIN = 20kΩ, RF = 30kΩ); for MAX9724B gain = -1.5V/V (internally set), TA = -40°C to +85°C, unless otherwise noted. Typical values
are at TA = +25°C, unless otherwise noted.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Quiescent Current
ICC
3.0
mA
Shutdown Current
ISHDN
SHDN = SGND = PGND
0.1
A
f = 1kHz, 100mVP-P
80
Power-Supply Rejection Ratio
(Note 4)
PSRR
f = 20kHz, 100mVP-P
65
dB
RL = 32
Ω, THD+N = 1%
20
Output Power (TQFN)
POUT
RL = 16
Ω, THD+N = 1%
14
mW
RL = 32
Ω, THD+N = 1%
17
Output Power (UCSP)
POUT
RL = 16
Ω, THD+N = 1%
12
mW
RL = 1k
Ω, VOUT = 2VRMS, fIN = 1kHz
0.05
RL = 32
Ω, POUT = 15mW, fIN = 1kHz
0.03
Total Harmonic Distortion Plus
Noise (TQFN) (Note 6)
THD+N
RL = 16
Ω, POUT = 10mW, fIN = 1kHz
0.06
%
RL = 1k
Ω, VOUT = 2VRMS, fIN = 1kHz
0.003
RL = 32
Ω, POUT = 15mW, fIN = 1kHz
0.04
Total Harmonic Distortion Plus
Noise (UCSP) (Note 6)
THD+N
RL = 16
Ω, POUT = 10mW, fIN = 1kHz
0.06
%
Note 3: All specifications are 100% tested at TA = +25°C; temperature limits are guaranteed by design.
Note 4: The amplifier inputs are AC-coupled to GND.
Note 5: Gain for the MAX9724A is adjustable.
Note 6: Measurement bandwidth is 22Hz to 22kHz.
Note 7: Test performed with a 32Ω resistive load connected to GND. Mode transitions are controlled by SHDN. KCP level is calculated
as 20log[(peak voltage during mode transition, no input signal)/(peak voltage under normal operation at rated power level)].
Units are expressed in dB.
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