Pre-Amplifier. NJU72084 Datasheet

NJU72084 Pre-Amplifier. Datasheet pdf. Equivalent

NJU72084 Datasheet
Recommendation NJU72084 Datasheet
Part NJU72084
Description Pre-Amplifier
Feature NJU72084; NJU72084 Pre-Amplifier for MEMS Microphone GENERAL DESCRIPTION PACKAGE OUTLINE The NJU72084 is.
Manufacture New Japan Radio
Datasheet
Download NJU72084 Datasheet




New Japan Radio NJU72084
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



New Japan Radio NJU72084
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=100kunless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX. UNIT
Current Consumption
Output Noise Voltage
IDD
VNO A-weighted
50 80 120 µA
-
3
(-110)
-
µVrms
(dBV)
Gain
Total Harmonic Distortion
VG
THD+N
Vin=50mVrms(=-26dBV),
filter=400Hz to 30kHz
-4.0 -3.0 -2.0
- 0.2 1
dB
%
Maximum Output Voltage
VOM THD<5%, filter=400Hz to30kHz
150
(-16.5)
281
(-11)
- mVrms
(dBV)
Cut Off Frequency
Cut Off Frequency
Power Supply Rejection Ratio
fcL
fcH
PSRR
f=217Hz, 0.1Vpp Square
- - 20 Hz
20 -
- kHz
- -56 - dB
Bias Voltage
Output DC Impedance
Start Up Time
Vbias
Zo
trbs
RL=2.2k
Bias Voltage 90% rising
11.8 12.5 13.2
V
-
150 300
- 4 10 msec
2



New Japan Radio NJU72084
TERMINAL DESCRIPTION
PIN
NO.
SYMBOL
FUNCTION
NJU72084
EQUIVALENT CIRCUIT
TERMINAL
VOLTAGE
5
VDD
Power Supply
4 GND
Ground
VDD
0V
2
MICIN
Microphone input
(Analog input)
1 OUT
Output
(Analog output)
3
BIAS
Bias Voltage
Output
0V
0.9V
12.5V
3







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