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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX9810 Datasheet

Electret Condenser Microphone Cartridge Preamplifier

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19-2515; Rev 0; 7/02
Electret Condenser Microphone Cartridge
Preamplifier
www.datasheet4u.com
General Description
The MAX9810 microphone preamplifier is intended for
use inside electret condenser microphone (ECM) car-
tridges. Current solutions use a FET as an impedance
converter. FETs have limited gain, are susceptible to
noise and require additional components external to the
ECM cartridge for biasing and amplification. The
MAX9810 replaces the FET with a high-gain, high-noise
rejection, low-output-impedance amplifier. Designed to
be integrated inside the ECM cartridge, the MAX9810
offers a flat frequency response, tightly controlled gain,
increased sensitivity, and high-noise rejection greatly
simplifying system design. Target applications include
ECM cartridges in cell phones, PDAs, notebooks, and
other portable audio devices.
The MAX9810 operates from a single 2.3V to 5.5V sup-
ply and consumes only 670µA of quiescent current. The
device features an internally generated 1.5V DC bias,
and is available in three internally fixed gain options
(24dB, 27dB, and 30dB). The MAX9810 is specified
over the extended temperature range (-40°C to +85°C)
and comes in a tiny 4-bump chip-scale package
(UCSP™) that is designed to fit inside the ECM cartridge.
Applications
Electret Condenser Microphone Cartridges In:
Cell Phones
Notebooks
PDAs
Portable Audio
Functional Diagram/
Typical Application Circuit
ELECTRET
MIC
MAX9810
VDD
POWER
OUTPUT
Features
o Replaces FET in Electret Condenser Microphone
o 2.3V to 5.5V Single-Supply Operation
o Low-Impedance Output (<0.4)
o High PSRR: 82dB
o Three High-Gain Options:
MAX9810A: 24dB
MAX9810B: 27dB
MAX9810C: 30dB
o Internal Bias Voltage
o Low Supply Current (670µA)
o Rail-to-Rail® Output
o No Output Phase Reversal During Overload
Conditions
o Available in a Tiny 4-Bump UCSP
Ordering Information
PART
TEMP RANGE
MAX9810AEBS-T
MAX9810BEBS-T
MAX9810CEBS-T
-40oC to +85oC
-40oC to +85oC
-40oC to +85oC
BUMP-
PACKAGE
4 UCSP-4
4 UCSP-4
4 UCSP-4
TOP
MARK
AFS
AFT
AFU
PART
MAX9810AEBS-T
MAX9810BEBS-T
MAX9810CEBS-T
Selector Guide
BUMP-PACKAGE
4 UCSP-4
4 UCSP-4
4 UCSP-4
GAIN
(dB)
24
27
30
Pin Configuration
TOP VIEW
(BUMP SIDE DOWN)
1
2
GND
ECM CARTRIDGE
GND
A
VDD
OUT
MAX9810
B
IN GND
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
USCP is a trademark of Maxim Integrated Products, Inc.
UCSP
________________________________________________________________ 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

MAX9810 Datasheet

Electret Condenser Microphone Cartridge Preamplifier

No Preview Available !

Electret Condenser Microphone Cartridge
Preamplifier
www.dAataBshSeOet4Lu.UcoTmE MAXIMUM RATINGS
VDD to GND ..............................................................-0.3V to +6V
All Other Pins to GND.................................-0.3V to (VDD + 0.3V)
Continuous Current (IN, OUT) ..........................................±20mA
Output Short-Circuit Duration (to GND or VDD)..........Continuous
Continuous Power Dissipation (TA = +70°C)
4-Bump UCSP (derate 3.0mW°C above +70°C) .......238.8mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Bump Temperature (soldering) (Note 1)
Infrared (15s) ................................................................+220°C
Vapor Phase (60s) ........................................................+215°C
Note 1: This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device
can be exposed to during board level solder attach and rework. This limit permits only the use of the solder profiles recom-
mended in the industry standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and convection reflow.
Preheating is required. Hand or wave soldering is not allowed.
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.
DC ELECTRICAL CHARACTERISTICS
(VDD = 3V, GND = 0, RL = , VIN = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
Supply Voltage Range
Quiescent Supply Current
Output Bias Voltage
Input Bias Current
Input Resistance
Power-Supply Rejection Ratio
Output Voltage Swing High
SYMBOL
VDD
IDD
VBIAS
IBIAS
RIN
PSRR
CONDITIONS
Inferred from PSRR test
2.3V VDD 5.5V
MAX9810A
MAX9810B
MAX9810C
(Note 3)
2.3V < VDD < 5.5V (Note 4)
RL = 10kconnected to 1.5V
VOH
RL = 1kconnected to 1.5V
MIN
2.3
1.3
1.3
1.3
0.025
70
VDD -
0.04
VDD -
0.15
TYP
670
1.48
1.53
1.58
5
5
86
VDD -
0.015
VDD -
0.07
MAX
5.5
950
1.7
1.7
1.8
100
UNITS
V
µA
V
pA
G
dB
V
Output Voltage Swing Low
Output Short-Circuit Current
Voltage Gain
VOL
ISCC
AV
RL = 10kconnected to 1.5V
RL = 1kconnected to 1.5V
VDD = 5V
VDD = 2.3V
MAX9810A
VIN = ±20mV
MAX9810B
MAX9810C
0.005 0.015
0.045 0.08
V
12
mA
10
23 24 25
26 27 28 dB
29 30 31
2 _______________________________________________________________________________________


Part Number MAX9810
Description Electret Condenser Microphone Cartridge Preamplifier
Maker Maxim Integrated Products
Total Page 9 Pages
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