max9813 Maxim Integrated Products, Inc., max9813 Datasheet

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max9813

Manufacturer Part Number
max9813
Description
Tiny, Low-cost, Single/dual-input, Fixed-gain Microphone Amplifiers With Integrated Bias
Manufacturer
Maxim Integrated Products, Inc.
Datasheet

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The MAX9812/MAX9813 are single/dual-input, 20dB
fixed-gain microphone amplifiers. They offer tiny pack-
aging and a low-noise, integrated microphone bias,
making them ideal for portable audio applications such
as notebook computers, cell phones, and PDAs. These
amplifiers feature a 500kHz bandwidth, Rail-to-Rail®
outputs, an industry-leading 100dB power-supply rejec-
tion ratio, and a very low 0.015% THD+N. Power-saving
features include very low 230µA supply current and a
total shutdown mode that cuts the combined supply
and BIAS currents to only 100nA.
The MAX9812 is a single amplifier in a 6-pin SC70
package (2mm x 2.1mm) and the MAX9813 is a dual-
input amplifier available in an 8-pin SOT23 (3mm x
3mm) package. The MAX9813 has two inputs allowing
two microphones to be multiplexed to a single output.
The MAX9812/MAX9813 are offered in two grades. The
MAX9812L/MAX9813L are optimized for 3.3V supply
operation (2.7V to 3.6V). The MAX9812H/MAX9813H are
PC2001 compliant and are optimized for 5V operation
(4.5V to 5.5V). Both devices are specified over the -40°C
to +85°C extended operating temperature range.
19-2840; Rev 0; 4/03
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.
BIAS
Notebook Computers
PDAs
Smart Phones
Car Kit Adapters
Digital Cameras
Video Tape Recorders
Tiny, Low-Cost, Single/Dual-Input, Fixed-Gain
IN
Microphone Amplifiers with Integrated Bias
4.0V (H VERSION)
2.3V (L VERSION)
REFERENCE
________________________________________________________________ Maxim Integrated Products
General Description
GND
Applications
MAX9812
20dB
V
CC
SHDN
OUT
o PC2001 Compliant
o 100dB at 217Hz Power-Supply Rejection Ratio
o Very Low 230µA Quiescent Current
o Low 0.015% THD+N
o Available in Two Versions
o Internal Low-Noise Microphone Bias Supply
o 100nA Low-Power Shutdown Mode
o Rail-to-Rail Outputs
o 20dB Fixed Gain
o Available in Tiny 6-Pin SC70 (2mm x 2.1mm) and
o Extended Temperature Range -40°C to +85°C
Pin Configurations, Selector Guide, and Typical Operating
Circuits appear at end of data sheet.
Rail-to-Rail is a trademark of Nippon Motorola Ltd.
IN1/IN2
MAX9813LEKA-T
MAX9813HEKA-T
MAX9812LEXT-T
MAX9812HEXT-T
BIAS
8-Pin SOT23 (3mm x 3mm) Packages
IN1
IN2
MAX9812L/MAX9813L—2.7V to 3.6V
MAX9812H/MAX9813H—4.5V to 5.5V
2.3V for MAX9812L/MAX9813L
4.0V for MAX9812H/MAX9813H
PART
4.0V (H VERSION)
2.3V (L VERSION)
REFERENCE
Simplified Block Diagrams
-40°C to +85°C 6 SC70-6
-40°C to +85°C 6 SC70-6
-40°C to +85°C 8 SOT23-8
-40°C to +85°C 8 SOT23-8
TEMP RANGE
Ordering Information
GND
MAX9813
PIN-
PACKAGE
20dB
V
CC
Features
SHDN
OUT
2.7 to 3.6
4.5 to 5.5
2.7 to 3.6
4.5 to 5.5
V
CC
(V)
1

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max9813 Summary of contents

Page 1

... BIAS currents to only 100nA. The MAX9812 is a single amplifier in a 6-pin SC70 package (2mm x 2.1mm) and the MAX9813 is a dual- input amplifier available in an 8-pin SOT23 (3mm x 3mm) package. The MAX9813 has two inputs allowing two microphones to be multiplexed to a single output ...

Page 2

... Output Slew Rate 2 _______________________________________________________________________________________ Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C + 0.3V) Junction Temperature ......................................................+150°C CC Lead Temperature (soldering, 10s) .................................+300°C ) ...Continuous 800µA (MAX9812H/MAX9813H), GND = 0V BIAS A CONDITIONS MAX9812L/MAX9813L Inferred from CC PSRR test MAX9812H/MAX9813H I I ...

Page 3

... Logic Input Current Shutdown Enable Time t SHDN_ON Shutdown Disable Time t SHDN_OFF IN1/IN2 Select Time Note 1: All specifications are 100% tested at T _______________________________________________________________________________________ = 5V 800µA (MAX9812H/MAX9813H), GND = 0V BIAS CONDITIONS e Inputs at AC GND n V 22Hz to 22kHz BW, inputs at AC GND n Input referred, MAX9813 ...

Page 4

... TEMPERATURE (°C) V vs. TEMPERATURE BIAS 2.33 2.32 MAX9812H 2.31 2.30 MAX9812L 2.29 2.28 2.27 -40 -25 - TEMPERATURE (°C) 4 _______________________________________________________________________________________ Typical Operating Characteristics = 5V (MAX9812H/MAX9813H), GND = 0V, R POWER-SUPPLY REJECTION RATIO vs. FREQUENCY 200mV -10 RIPPLE P-P INPUT REFERRED -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 10 100 1k ...

Page 5

... OUTPUT AMPLITUDE (V BIAS NOISE vs. FREQUENCY 10,000 1000 100 10 10 100 1k FREQUENCY (Hz) _______________________________________________________________________________________ Typical Operating Characteristics (continued (MAX9812H/MAX9813H), GND = 0V RMS 10k 100k f = 1kHz 1.0 1.5 ) RMS 10k 100k /2, SHDN = V = 10kΩ TOTAL HARMONIC DISTORTION PLUS NOISE vs ...

Page 6

... OUT 50mV/div 1µs/div OUT-OF-SHUTDOWN WAVEFORM INPUT FLOATING SHDN 2V/div BIAS 2V/div OUT 2V/div 1ms/div 6 _______________________________________________________________________________________ Typical Operating Characteristics (continued (MAX9812H/MAX9813H), GND = 0V, R MAX9812 toc15 100mV/div OUT 1V/div 0V MAX9812 toc17 1V/div 2V/div OUTPUT OVERDRIVEN MAX9812 toc19 OUT 1V/div IN 500mV/div 2µs/div /2, SHDN = V = 10kΩ ...

Page 7

... Ground Amplifier Output Positive Supply. Bypass V to GND with a 0.1µF capacitor. CC Low-Noise Microphone Bias Output. 2.3V output for MAX9812L/MAX9813L. 4V output for MAX9812H/MAX9813H. Amplifier Input (MAX9812) Amplifer Input 1 (MAX9813) Amplifier Input 2 (MAX9813) Input Selector. When IN1/IN2 is high, IN1 is selected. When IN1/IN2 low, IN2 is selected. ...

Page 8

... Tiny, Low-Cost, Single/Dual-Input, Fixed-Gain Microphone Amplifiers with Integrated Bias V DD 0.1µF 220kΩ IN1/IN2 OUT 0.1µF IN1 22kΩ MAX9813 IN2 2.2kΩ BIAS SHDN GND 2.2kΩ 0.1µF Figure 1. Typical Application Circuit 8 _______________________________________________________________________________________ BIAS SV DD 1µF GAINLB GAINLA 15kΩ ...

Page 9

... BIAS 1 2.2kΩ 2.2kΩ SHDN 0.1µF 3 OUT MIC1 MIC2 BIAS MAX9812 TRANSISTOR COUNT: 264 TOP V (V) CC MARK MAX9813 TRANSISTOR COUNT: 269 2.7 to 3.6 ABJ PROCESS: BiCMOS 4.5 to 5.5 ABK 2.7 to 3.6 AEEU 4.5 to 5.5 AEEV Typical Operating Circuits 0.1µ BIAS 3 SHDN 0.1µF 6 0.1µF IN1 ...

Page 10

Tiny, Low-Cost, Single/Dual-Input, Fixed-Gain Microphone Amplifiers with Integrated Bias (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 10 ______________________________________________________________________________________ Package Information ...

Page 11

Tiny, Low-Cost, Single/Dual-Input, Fixed-Gain Microphone Amplifiers with Integrated Bias (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages PIN 1 I.D. ...

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