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MAX4063 Datasheet

  • MAX4063

  • ?Differential Microphone Preamplifier with Internal Bias and...

  • Maxim   Maxim

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19-2753; Rev 0; 1/03
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 6V
P-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 0.3碌A(chǔ)
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擄C to +85擄C operating temperature
range. The MAX4063 is available in both 16-pin thin QFN
(4mm x 4mm x 0.8mm) and 14-pin TSSOP packages.
o
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Features
2.4V to 5.5V Single-Supply Operation
Differential Inputs and Outputs
Adjustable Gain
High 95dB PSRR
High 79dB CMRR
Low-Noise, Integrated Microphone Bias
750碌A(chǔ) Supply Current
0.3碌A(chǔ) Shutdown Current
鹵4kV ESD Protection (AUX_IN)
THD+N: 0.05% at 1kHz
Available in Space-Saving Packages
14-Pin TSSOP
16-Pin Thin QFN (4mm x 4mm x 0.8mm)
MAX4063
Ordering Information
PART
MAX4063ETE*
MAX4063EUD
TEMP RANGE
-40擄C to +85擄C
-40擄C to +85擄C
PIN-PACKAGE
16 Thin QFN-EP**
14 TSSOP
Applications
Notebook Audio Systems
Tablet PCs
PDA Audio Systems
Signal Conditioning
*Future product鈥攃ontact factory for availability.
**EP = Exposed paddle.
Typical Operating Circuit
2.4V TO 5.5V
6
V
CC
3
Pin Configurations
SHDN
INT/AUX 2
7
12 AUX_IN
ADJ
G2 1
INT/AUX
SHDN
2
3
14 G1
13 N.C.
12 AUX_IN
MAX4063
5 BIAS
V
BIAS
OUT 4
OUT 8
OUT 4
BIAS 5
V
CC
6
ADJ 7
MAX4063
11 GND
10 IN-
9
8
IN+
OUT
G1 G2
14 1
R
G
GND
11
9 IN+
10 IN-
TSSOP
Pin Configurations continued at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

MAX4063 PDF文件相關(guān)型號(hào)

MAX4063ETE,MAX4063EUD

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