MAX14627ETAT 데이터 시트보기 (PDF) - Maxim Integrated
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MAX14627ETAT Datasheet PDF : 16 Pages
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MAX14627/MAX14628
Low-Power Headset Detectors with
SEND/END Button Support
ELECTRICAL CHARACTERISTICS (continued)
(VCC = 2.5V to 5.5V for MAX14627, VCC = 3.1V to 5.5V for MAX14628, CDETIN < 100pF, TA = -40NC to +85NC, unless otherwise noted.
Typical values are at VCC = +3.6V, TA = +25NC.) (Note 2)
PARAMETER
DETIN Pullup Resistance
DETIN Series Resistance
Negative Current from DETIN
MIC SEND/END Detection
Threshold
MIC Open Switch Detection
Threshold
DETIN Detection Threshold
MODE Pullup Resistance for
High-Z Detection
SYMBOL
RDETIN
RDETININT
INDETIN
CONDITIONS
VDETIN = -2V
VMICTH_LOW
VMICTH_HI MAX14628
VDETINTH Falling edge
RMODE_HI
MIN
0.20 x
VBIAS
0.90 x
VBIAS
1/3 x
VCC
TYP
1000
100
0.22 x
VBIAS
0.94 x
VBIAS
1/2 x
VCC
MAX
31
0.24 x
VBIAS
0.98 x
VBIAS
2/3 x
VCC
UNITS
kI
kI
FA
V
V
V
200
kI
MODE Pulldown Resistance for
High-Z Detection
LINEAR REGULATOR (CAP)
Output Current Limit
LDO Output Voltage
LDO PSRR
RMODE_LO
ICAP
VLDO
PSRRLDO
VCAP = 0V
MAX14627, VCC = 2.8V
MAX14628, VCC = 3.3V
Noise from VCC to CAP, f = 217Hz,
VCC = 2.8V ±0.1V, ICAP = 300FA,
MODE = high
200
kI
4
mA
2.0
2.2 2.45
V
2.55 2.8
3.1
100
dB
LDO Noise
NLDO
VCC = 2.8V, IMIC = 300FA,
f = 100Hz to 4000Hz
11
FVRMS
LDO Turn-Off Time
tLDO_OFF
MAX14627, VCC = 2.8V, RL = 2kI,
VCAP from 90% to 10%
MAX14628, VCC = 3.3V, RL = 2kI,
VCAP from 90% to 10%
60
Fs
60
Minimum Bypass Capacitance
COUT
DIGITAL SIGNALS (MODE, SWD, DET)
(Note 3)
0.22
FF
Input Logic-High Voltage
VIH
1.4
V
Input Logic-Low Voltage
VIL
0.4
V
MODE Average Current
Pulsing with 1/64 duty cycle from MODE
IMODE_LOW terminal when MODE = low, DETIN = low
(Note 4)
1
FA
MODE Input Resistance
MODE External Maximum
Leakage
RMODE_HI When MODE = high, DETIN = low
IMODE_LKG When MODE = high-Z (Note 3)
120 220 380
kI
-1
+1
FA
Output Logic-High Leakage
Current (Open Drain)
IOH_LKG VOH = 5V
1
FA
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