Data Sheet

EnzyTek Technology, Inc.
7F, No. 35, Hsueh Fu Rd., Hsinchu 300,
Taiwan , R.O.C.
TEL：[phone] FAX： [phone]
11/24
Battery input pin specification
VBAT
Min
Typ
Max
Unit
Operating voltage
2.8
3.7
4.6
V
Software power-off threshold
-
3
-
V
Under voltage lockout rising threshold
2.47
2.6
2.73
V
Under voltage lockout hysteresis
50
-
120
mV
USB dead/weak battery rising threshold
3.14
3.3
3.46
V
USB dead/weak battery hysteresis
50
-
120
mV
Charger input pin specification
VCHG
Min
Typ
Max
Unit
Operating voltage (full device specification)
4.75
5
6.5
V
Operating voltage (reduced charger specification)
4.0
5
6.5
V
VCHG_PRESENT rising threshold
3.4
3.6
4.0
V
VCHG_PRESENT hysteresis
70
-
150
mV
Full operating range
VCHG_
PRESENT
-
6.5
V
On chip pull-down (disabled when VCHG_PRESENT = 1)
10
20
30
kΩ
Microphone Bias
Parameter
Conditions
Min
Typ
Max
Unit
Output voltage (Tunable,
step = 0.1 V)
-
1.5
-
2.1
V
Output current capability
-
0.07
-
3.0
mA
Output noise
B/W = 20 Hz → 20 kHz
Unweighted
4.5
5.1
7.3
μVrms
Crosstalk Between
Microphones
Using recommended
application circuit
-
80
-
dB
Load capacitance
a
From parasitic PCB routing
and package
-
-
0.1
nF