MAX4060EUA-T Maxim Integrated Products, MAX4060EUA-T Datasheet

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MAX4060EUA-T

Manufacturer Part Number
MAX4060EUA-T
Description
Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown
Manufacturer
Maxim Integrated Products
Datasheet

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The MAX4060/MAX4061/MAX4062 are differential-input
microphone preamplifiers optimized for notebook and
PDA audio systems. These devices feature adjustable
gain with excellent power-supply rejection and com-
mon-mode rejection ratios, making them ideal for low-
noise applications in portable audio systems.
The MAX4060/MAX4062 are capable of switching their
output between the differential input and a single-
ended auxiliary microphone amplifier input. In addition,
the MAX4060/MAX4062 have a low-noise microphone
bias generator. The differential gain of the
MAX4061/MAX4062 is set with a single resistor. The
MAX4060 has a fixed gain of 10V/V and is PC99/2001
compliant. The MAX4061 includes a complete shut-
down mode. In shutdown, the supply current is
reduced to 0.3µA and the current to the microphone
bias is cut off for ultimate power savings.
The MAX4060 operates from a 4.5V to 5.5V single sup-
ply and the MAX4061/MAX4062 operate from 2.4V to
5.5V. All devices are specified over the extended oper-
ating temperature range, -40°C to +85°C. The
MAX4060/MAX4061 are available in tiny 8-pin thin QFN
(3mm x 3mm x 0.8mm) and 8-pin µMAX
The MAX4062 is available in a 10-pin µMAX package.
19-2408; Rev 2; 5/05
*EP = Exposed paddle.
Pin Configurations and Selector Guide appear at end of
data sheet.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
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.
MAX4060ETA
MAX4060EUA
MAX4061ETA
MAX4061EUA
MAX4062EUB
Notebook Audio
Systems
Tablet PCs
PDA Audio Systems
PART
Differential Microphone Preamplifiers with
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
________________________________________________________________ Maxim Integrated Products
RANGE
TEMP
Ordering Information
General Description
Internal Bias and Complete Shutdown
USB Audio Peripherals
AES-42-Compliant
Microphones
Signal Conditioning
PIN-
PACKAGE
8 Thin QFN-EP*
8 µMAX
8 Thin QFN-EP*
8 µMAX
10 µMAX
Applications
®
packages.
MARK
TOP
ABY
ABZ
♦ 2.4V to 5.5V Single-Supply Operation
♦ Adjustable Gain or Fixed-Gain Options
♦ High PSRR (86dB at 1kHz)
♦ High CMRR (70dB at 1kHz)
♦ Low Input-Referred Noise
♦ Integrated Microphone Bias
♦ 750µA Supply Current
♦ 0.3µA Shutdown Current
♦ ±4kV ESD Protection (AUX_IN)
♦ Rail-to-Rail Outputs
♦ THD+N: 0.04% at 1kHz
♦ Available in Space-Saving Packages
8-Pin Thin QFN (MAX4060/MAX4061)
8-Pin µMAX (MAX4060/MAX4061)
10-Pin µMAX (MAX4062)
BIAS
Typical Operating Circuit
BIAS
8
5
6
IN+
IN-
AUX_IN
x10
x10
V
2.4V TO 5.5V
BIAS
4
V
CC
GND
7
MAX4060
Features
INT/AUX 1
BIAS
OUT 2
3
BIAS
1

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MAX4060EUA-T Summary of contents

Page 1

... Microphones PDA Audio Systems Signal Conditioning Ordering Information TEMP PIN- PART RANGE PACKAGE MAX4060ETA -40°C to +85°C 8 Thin QFN-EP* MAX4060EUA -40°C to +85°C 8 µMAX MAX4061ETA -40°C to +85°C 8 Thin QFN-EP* MAX4061EUA -40°C to +85°C 8 µMAX MAX4062EUB -40°C to +85°C 10 µMAX *EP = Exposed paddle. ...

Page 2

Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown ABSOLUTE MAXIMUM RATINGS Supply Voltage (V to GND). .................................-0.3V to +6V CC Any Other Pin to GND ................................-0. Duration of Short Circuit to GND or V ....................Continuous CC Continuous ...

Page 3

Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown ELECTRICAL CHARACTERISTICS (continued for MAX4061/MAX4062 100k to 1.5V BIAS A MIN PARAMETER SYMBOL Total Harmonic Distortion Plus ...

Page 4

Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown ELECTRICAL CHARACTERISTICS (continued for MAX4061/MAX4062 100k to 1.5V BIAS A MIN PARAMETER SYMBOL Power-Supply Rejection Ratio PSRR ...

Page 5

Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown ( (MAX4061/MAX4062 +25°C, unless otherwise noted.) A GAIN vs. FREQUENCY (NO LOAD -12 -15 10 ...

Page 6

Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown ( (MAX4061/MAX4062 +25°C, unless otherwise noted.) A MAX4060 MIC BIAS VOLTAGE vs. TEMPERATURE 2.300 I = 800 A BIAS 2.275 2.250 2.225 2.200 2.175 ...

Page 7

Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown ( (MAX4061/MAX4062 +25°C, unless otherwise noted.) A MAX4062 MIC BIAS OUTPUT NOISE 22Hz TO 22kHz 100ms/div SMALL-SIGNAL TRANSIENT ...

Page 8

Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown PIN MAX4060 MAX4061 MAX4062 1 — — — — 9 — ...

Page 9

Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown Fixed Differential Gain (MAX4060) The MAX4060 has an internal fixed gain of 10V/V for its differential input. This feature simplifies design, reduces pin count, footprint, and eliminates external gain-setting resistors. Adjustable ...

Page 10

Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown 100k Figure 1. MAX4062 with Auxiliary Input Configuration ential inputs and to set the lower 3dB point (f amplifier by sizing the output capacitor appropriately. The input impedance matching on the ...

Page 11

Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown MICROPHONE INPUT Figure 2. MAX4060 Used for Biasing a Microphone The MAX4061/MAX4062 have a lower bias voltage and low-impedance outputs (optimum electret bias resistor can then be set externally). This gives ...

Page 12

Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown 2.2k 2.2k Figure 3. MAX4062 Used to Bias a Microphone Connected to the Auxiliary Input and the Differential Input 12 ______________________________________________________________________________________ 2. BIAS V MAX4062 ...

Page 13

Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown 2.2 F 2.2 F Figure 4. Remote Differential Microphone Bias Network Optimizes Noise Rejection in Long-Run, PC Board Traces TOP VIEW INT/AUX 1 8 OUT 2 7 MAX4060 BIAS 3 6 ...

Page 14

Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown 4. MAX4060 8 AUX_IN x10 INT/AUX 3 BIAS V BIAS OUT 5 IN+ x10 6 IN- GND 7 AUXILIARY DIFF INPUT PRODUCT* INPUT ✔ MAX4060 MAX4061 ...

Page 15

Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) PIN 1 INDEX AREA -DRAWING NOT TO SCALE- ...

Page 16

Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages Ø0.50±0.1 0.6±0.1 1 0.6±0.1 D ...

Page 17

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 17 © 2005 Maxim Integrated Products ...

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