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MAX4063 Datasheet

Differential Microphone Preamplifier

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19-2753; Rev 1; 6/11
Differential Microphone Preamplifier with
Internal Bias and Complete Shutdown
General Description
The MAX4063 is a differential-input microphone preampli-
fier optimized for high-performance, portable applica-
tions. The device features two selectable inputs,
differential outputs, adjustable gain, an integrated low-
noise bias source, and a low-power shutdown mode.
Two input paths provide both differential and single-
ended microphone sensing. The high-noise rejection of
the differential input is ideally suited to an internal micro-
phone where system noise and long-run PC board traces
can degrade low-level signals. The single-ended input
provides a simple connection to an external microphone.
The differential and single-ended inputs have indepen-
dent, adjustable gains that are set with a single external
resistor. Differential outputs provide a full-scale signal of
up to 6VP-P from a single 3V supply, optimizing the
dynamic range of the amplified signal. A complete shut-
down mode reduces the supply current to only 0.3µA
and disables the microphone bias for the ultimate in
power savings.
The MAX4063 operates from 2.4V to 5.5V and is specified
over the extended -40°C to +85°C operating temperature
range. The MAX4063 is available in both 16-pin TQFN
(4mm x 4mm x 0.8mm) and 14-pin TSSOP packages.
Notebook Audio Systems
Tablet PCs
PDA Audio Systems
Signal Conditioning
Applications
Pin Configurations
G2 1
INT/AUX 2
SHDN 3
OUT 4
BIAS 5
VCC 6
ADJ 7
+
MAX4063
14 G1
13 N.C.
12 AUX_IN
11 GND
10 IN-
9 IN+
8 OUT
TSSOP
Pin Configurations continued at end of data sheet.
Features
o 2.4V to 5.5V Single-Supply Operation
o Differential Inputs and Outputs
o Adjustable Gain
o High 95dB PSRR
o High 79dB CMRR
o Low-Noise, Integrated Microphone Bias
o 750µA Supply Current
o 0.3µA Shutdown Current
o ±4kV ESD Protection (AUX_IN)
o THD+N: 0.05% at 1kHz
o Available in Space-Saving Packages
14-Pin TSSOP
16-Pin TQFN (4mm x 4mm x 0.8mm)
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX4063ETE+
-40°C to +85°C 16 TQFN-EP*
MAX4063EUD+
-40°C to +85°C 14 TSSOP
*EP = Exposed pad.
+Denotes a lead(pB)-free/RoHS-compliant package.
Typical Operating Circuit
2.4V TO 5.5V
3 SHDN
12 AUX_IN
6
VCC
INT/AUX 2
ADJ 7
MAX4063
5 BIAS VBIAS
OUT 4
OUT 8
9 IN+
10 IN-
G1 G2
14 1
RG
GND
11
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX4063 Datasheet

Differential Microphone Preamplifier

No Preview Available !

Differential Microphone Preamplifier with
Internal Bias and Complete Shutdown
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC to GND). .................................-0.3V to +6V
Any Other Pin to GND ................................-0.3V to (VCC + 0.3V)
Duration of Short Circuit to GND or VCC ....................Continuous
Continuous Input Current (any pin) ................................ ±10mA
Continuous Power Dissipation (TA = +70°C)
14-Pin TSSOP (derate 10.0mW/°C above +70°C) .....796.8mW
16-Pin TQFN (derate 25.0mW/°C above +70°C) ........2000mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC = 3V, VGND = 0V, VSHDN = VCC, VINT/AUX = 0V, RG = 11.11k, RL = 100kto 1.5V, RBIAS = , VOUT is measured between
OUT and OUT. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 1 and 2)
PARAMETER
SYMBOL
CONDITIONS
Supply Voltage Range
VCC Inferred from PSRR test
Supply Current
ICC
Output Common-Mode Voltage
VOCM
Slew Rate
SR AV = 20V/V
Supply Current in Shutdown
ISHDN VSHDN = 0V
Output Short-Circuit Current
To GND
ISC
To VCC
DIFFERENTIAL INPUT (VINT/AUX = 0V)
Input Offset Voltage
VOS TA = +25°C
Common-Mode Input Voltage Range VCM Inferred from CMRR test
Maximum Differential Input Voltage VDIFFMAX AV = 2V/V
Small-Signal Bandwidth
BW-3dB
Input Resistance
RIN Either differential input
Input Resistance Match
RMATCH
Input Noise-Voltage Density
en
AV = 20V/V, f = 1kHz
AV = 200V/V, f = 1kHz
RMS Output Noise Voltage
VNRMS AV = 20V/V, BW = 22Hz to 22kHz
Total Harmonic Distortion Plus Noise
THD+N
AV = 20V/V, f = 1kHz, VOUT = 0.7VRMS,
BW = 22Hz to 22kHz
Differential Gain
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
AVDIFF
CMRR
PSRR
1V < VCM < 2V,
VOUT = 0.7VRMS
RG = open
RG = 11.11k
RG = 1.01k
VCM = 500mVP-P, f = 1kHz
TA = +25°C
TA = TMIN - TMAX
VCC = 5V ±100mV, f = 1kHz
MIN TYP
2.4
0.75
1.25 1.5
±1
0.001
30
30
MAX
5.5
1.1
1.75
1
UNITS
V
mA
V
V/µs
µA
mA
±1
1
1
600
100
1
70
12
225
0.05
2
19.2 20
200
70
95
85
86
mV
2V
V
kHz
k
%
nV/Hz
µVRMS
%
20.8 V/V
dB
dB
2 _______________________________________________________________________________________


Part Number MAX4063
Description Differential Microphone Preamplifier
Maker Maxim Integrated
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MAX4063 Datasheet PDF






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