Data Sheet

EnzyTek Technology, Inc.
7F, No. 35, Hsueh Fu Rd., Hsinchu 300,
Taiwan , R.O.C.
TEL：[phone] FAX： [phone]
12/25
Battery input pin specification
VBAT Min Ty p 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 Ty p 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