MAX4060ETA-T Maxim Integrated, MAX4060ETA-T Datasheet

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MAX4060ETA-T

Manufacturer Part Number
MAX4060ETA-T
Description
Microphone Preamplifiers
Manufacturer
Maxim Integrated
Datasheet
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 TDFN
(3mm x 3mm x 0.8mm) and 8-pin µMAX
The MAX4062 is available in a 10-pin µMAX package.
19-2408; Rev 3; 4/11
* EP = Exposed pad.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
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 TDFN-EP*
8 µMAX
8 TDFN-EP*
8 µMAX
10 µMAX
Applications
®
packages.
MARK
TOP
ABY
ABZ
o 2.4V to 5.5V Single-Supply Operation
o Adjustable Gain or Fixed-Gain Options
o High PSRR (86dB at 1kHz)
o High CMRR (70dB at 1kHz)
o Low Input-Referred Noise
o Integrated Microphone Bias
o 750µA Supply Current
o 0.3µA Shutdown Current
o ±4kV ESD Protection (AUX_IN)
o Rail-to-Rail Outputs
o THD+N: 0.04% at 1kHz
o Available in Space-Saving Packages
8-Pin TDFN (MAX4060/MAX4061)
8-Pin µMAX (MAX4060/MAX4061)
10-Pin µMAX (MAX4062)
BIAS
Typical Operating Circuit
BIAS
8
5
6
AUX_IN
IN+
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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MAX4060ETA-T Summary of contents

Page 1

... AES-42-Compliant Tablet PCs Microphones PDA Audio Systems Signal Conditioning Ordering Information TEMP PIN- PART RANGE PACKAGE -40°C to +85°C 8 TDFN-EP* MAX4060ETA+ MAX4060EUA+ -40°C to +85°C 8 µMAX MAX4061ETA+ -40°C to +85°C 8 TDFN-EP* MAX4061EUA+ -40°C to +85°C 8 µMAX MAX4062EUB+ -40°C to +85°C 10 µMAX * EP = Exposed pad ...

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 Continuous Input Current (any pin) ................................ ±10mA Continuous Power Dissipation (T = +70°C) A 8-Pin TDFN (derate 24.4mW/°C above +70°C) ......1951.2mW 8-Bump µ ...

Page 3

... Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown ELECTRICAL CHARACTERISTICS (continued for MAX4061/MAX4062 ∞ 100kΩ to 1.5V BIAS A MIN PARAMETER SYMBOL Total Harmonic Distortion THD+N Plus Noise Differential Gain A Common-Mode Rejection Ratio CMRR Power-Supply Rejection Ratio ...

Page 4

... Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown ELECTRICAL CHARACTERISTICS (continued for MAX4061/MAX4062 ∞ 100kΩ to 1.5V BIAS A MIN PARAMETER SYMBOL Power-Supply Rejection Ratio DIGITAL INPUTS ( for M AX 4061 and INT /AU X for M AX 4060/M AX 4062) ...

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 10 100 1k 10k 100k FREQUENCY (Hz) SUPPLY CURRENT vs. SUPPLY VOLTAGE 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0 10V/V V 0.1 NO LOAD 0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V) OUTPUT-VOLTAGE LOW vs. TEMPERATURE ...

Page 6

... Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown ( (MAX4061/MAX4062 MAX4060 MIC BIAS VOLTAGE vs. TEMPERATURE 2.300 I = 800μA BIAS 2.275 2.250 2.225 2.200 2.175 2.150 2.125 2.100 -40 - TEMPERATURE (°C) TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT AMPLITUDE ...

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 RESPONSE FOR AUX INPUT 10μs/div LARGE-SIGNAL TRANSIENT RESPONSE FOR AUX INPUT 10μ ...

Page 8

... Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown PIN MAX4060 MAX4061 MAX4062 1 — — — — 9 — — 2 — — — 4 — — — — Detailed Description The MAX4060/MAX4061/MAX4062 are differential micro- phone preamplifiers providing high-quality audio, opti- mized for use in computer and mobile applications ...

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 Differential-Gain Setting The MAX4061/MAX4062 allow the user to alter the gain to optimize the signal-to-noise ratio (SNR) of their sys- tem ...

Page 10

... Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown 100kΩ 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 differential input is typically 1%, allowing input capacitor matching to be effective at improving low-frequency PSRR ...

Page 11

... Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown MICROPHONE INPUT Figure 2. MAX4060 Used for Biasing a Microphone The MAX4062 has a lower bias voltage and low-imped- ance outputs (optimum electret bias resistor can then be set externally). This gives a low-noise, flexible solu- tion that can run from 2.4V to 5.5V, suitable for hand- held devices such as PDAs that typically have audio power supplies in the 3V region (see Figure 3) ...

Page 12

... Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown 2.2kΩ Figure 3. MAX4062 Used to Bias a Microphone Connected to the Auxiliary Input and the Differential Input 12 ______________________________________________________________________________________ 2. BIAS V BIAS 0.1μF 9 AUX_IN x10 0.1μF 2.2kΩ 11kΩ 0.1μF 6 IN+ 7 IN- 0.1μ ...

Page 13

... Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown 2.2μF 2.2μF 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 µMAX/TDFN *CONNECT EP TO GND (TDFN ONLY). ______________________________________________________________________________________ 2 ...

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 — ✔ MAX4062 * See Block Diagrams. Chip Information PROCESS: BiCMOS 14 ______________________________________________________________________________________ 2 ...

Page 15

... 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. 15 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2011 Maxim Integrated Products ...

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