NJU72084
Pre-Amplifier for MEMS Microphone
GENERAL DESCRIPTION
PACKAGE OUTLINE
The NJU72084 is a pre-amplifier for MEMS microphone.
The NJU72084 has integrated low noise bias circuit for MEMS
microphone, and high performance analog pre-amplifier deliver the
genuine sound quality and support flexible microphone systems.
CHIP
APPLICATIONS Portable Audio equipment MEMS Microphone module Cellular Phone
FEATURES Operating Voltage Current Consumption Input equivalent noise .
Pre-Amplifier
NJU72084
Pre-Amplifier for MEMS Microphone
GENERAL DESCRIPTION
PACKAGE OUTLINE
The NJU72084 is a pre-amplifier for MEMS microphone.
The NJU72084 has integrated low noise bias circuit for MEMS
microphone, and high performance analog pre-amplifier deliver the
genuine sound quality and support flexible microphone systems.
CHIP
APPLICATIONS Portable Audio equipment MEMS Microphone module Cellular Phone
FEATURES Operating Voltage Current Consumption Input equivalent noise Maximum output Voltage Gain Frequency response Bias Voltage Operating temperature Package
1.5V to 3.60V 80µA typ. 3µVrms (-110dBV) 281mVrms (-11dBV) at THD < 5% -3dB 20Hz to 20kHz +12.5V -40ºC to 85ºC Chip (Wafer)
BLOCK DIAGRAM
1 OUT 2 MICIN 3 BIAS 4 GND 5 VDD
Output (Analog output) Microphone input (Analog input) Bias Voltage Output Ground Power Supply
Ver.4.0
–1–
NJU72084
ABSOLUTE MAXIMUM RATING (Ta=25C)
PARAMETER
SYMBOL
Power Supply Voltage
VDD
Operating temperature
Topr
Storage temperature
Tstg
Maximum input Voltage
VIM
RATING 5
-40 to 85 -40 to 125
±0.4
UNIT V C C
V
CAUTION ESD Tolerance: Human Body Model 2000V, ( MICIN and BIAS terminals : 500V )
RECOMMENDED OPERATING CONDITIONS (Ta =25C unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP.
Operating Voltage
VDD
1.5 1.8
MAX. 3.6
UNIT V
ELECTRICAL CHARACTERISTICS
(Ta=25C, VDD =1.8V, Input Capacitance=1pF, Vin=-39.0dBV, f=1kHz, RL=100kΩ unless otherwise specified)
.