MAXIM MAX4060, MAX4061, MAX4062 Technical data

General Description

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 com­mon-mode rejection ratios, making them ideal for low­noise applications in portable audio systems.

The MAX4060/MAX4062 are capable of switching their
output between the differential input and a single­ended 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 shut­down 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 sup­ply and the MAX4061/MAX4062 operate from 2.4V to

5.5V. All devices are specified over the extended oper­ating 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®packages.
The MAX4062 is available in a 10-pin µMAX package.

Applications

Features

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)

MAX4060/MAX4061/MAX4062

Differential Microphone Preamplifiers with

Internal Bias and Complete Shutdown

________________________________________________________________

Maxim Integrated Products

1

Typical Operating Circuit

Ordering Information

19-2408; Rev 3; 4/11

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.

Pin Configurations and Selector Guide appear at end of
data sheet.

*

EP = Exposed pad.

+

Denotes a lead(Pb)-free/RoHS-compliant package.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

Notebook Audio
Systems

Tablet PCs

PDA Audio Systems

USB Audio Peripherals

AES-42-Compliant
Microphones

Signal Conditioning

BIAS

8

AUX_IN

2.4V TO 5.5V

4
V

x10

CC

MAX4060

INT/AUX

PART

MAX4060ETA+ -40°C to +85°C 8 TDFN-EP* ABY

MAX4060EUA+ -40°C to +85°C 8 µMAX —

MAX4061ETA+ -40°C to +85°C 8 TDFN-EP* ABZ

MAX4061EUA+ -40°C to +85°C 8 µMAX —

MAX4062EUB+ -40°C to +85°C 10 µMAX —

TEMP

RANGE

PIN­PACKAGE

TOP

MARK

BIAS

5

IN+

6

IN-

x10

V

BIAS

GND

7

BIAS

OUT

1

2

BIAS

3

MAX4060/MAX4061/MAX4062

Differential Microphone Preamplifiers with
Internal Bias and Complete Shutdown

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= 3V for MAX4061/MAX4062, VCC= 5V for MAX4060, V

GND

= 0V, V

SHDN

= VCC, V

INT/AUX

= 0V, RG= 11.11kΩ,

RL= 100kΩ to 1.5V, R

BIAS

= ∞, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Notes 1, 2)

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.

Supply Voltage (VCCto GND). .................................-0.3V to +6V

Any Other Pin to GND ................................-0.3V to (V

CC

+ 0.3V)

Duration of Short Circuit to GND or V

CC

....................Continuous

Continuous Input Current (any pin) ................................ ±10mA

Continuous Power Dissipation (T

A

= +70°C)

8-Pin TDFN (derate 24.4mW/°C above +70°C) ......1951.2mW

8-Bump µMAX (derate 4.8mW/°C above +70°C) .....387.8mW

10-Bump µMAX (derate 8.8mW/°C above +70°C) ..707.3mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Soldering Temperature (reflow) .......................................+260°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage Range V

Supply Current I

Output Common-Mode Voltage V

Slew Rate SR AV = 10V/V ±1 V/µs

Supply Current in Shutdown I

Output Short-Circuit Current I

DIFFERENTIAL INPUT (V

Input Offset Voltage V

Common-Mode Input Voltage
Range

Maximum Differential Input
Voltage

Small-Signal Bandwidth BW

Input Resistance R

Input Resistance Match R

Input Noise-Voltage Density e

RMS Output Noise Voltage V

= 0V for MAX4060/MAX4062, default for MAX4061)

INT/AUX

CC

CC

OCM

SHDN

SC

OS

V

CM

V

DIFFMAXAV

-3dB

IN

MATCH

n

NRMS

Inferred from
PSRR test

V

= 0V, MAX4061 0.001 1 µA

SHDN

To GND 30

To V

CC

= 1V/V, MAX4061/MAX4062 1 V

Either differential input 100 kΩ

AV = 10V/V, f = 1kHz 100

AV = 100V/V, f = 1kHz, MAX4061/MAX4062
only

AV = 10V/V, BW = 22Hz to 22kHz 125 µV

MAX4061/MAX4062 2.4 5.5

MAX4060 4.5 5.5

1.25 1.5 1.75 V

12V

0.75 1.2 mA

30

±0.1 ±5mV

600 kHz

1%

20

V

mA

nV/√Hz

RMS

MAX4060/MAX4061/MAX4062

Differential Microphone Preamplifiers with

Internal Bias and Complete Shutdown

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= 3V for MAX4061/MAX4062, VCC= 5V for MAX4060, V

GND

= 0V, V

SHDN

= VCC, V

INT/AUX

= 0V, RG= 11.11kΩ,

R

L

= 100kΩ to 1.5V, R

BIAS

= ∞, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Notes 1, 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Total Harmonic Distortion
Plus Noise

AV = 10V/V, f = 1kHz, V

OUT

= 0.7V

RMS

,

BW = 22Hz to 22kHz

%

RG = open 1

1.3

RG = 11.11kΩ

10

1V < VCM < 2V,
V

OUT

= 0.7V

RMS

,

RG = 1.01kΩ

Differential Gain A

VDIFF

1V < VCM < 2V, V

OUT

= 0.7V

RMS

, MAX4060

V/V

Common-Mode Rejection Ratio CMRR VCM = 500mV

P-P

, f = 1kHz 70 dB

TA = +25°C

89

TA = T

MIN

to T

MAX

Power-Supply Rejection Ratio PSRR

V

CC

= 5V ±100mV, f = 1kHz 86

dB

AUXILIARY INPUT (MAX4060/MAX4062, INT/AUX = VCC)

Small-Signal Bandwidth

kHz

Input Resistance R

IN

kΩ

Input Noise-Voltage Density e

n

f = 1kHz 45

nV/√Hz

RMS Output Noise Voltage V

NRMS

BW = 22Hz to 22kHz

μV

RMS

Total Harmonic Distortion
Plus Noise

f = 1kHz, BW = 22Hz to 22kHz

%

TA = +25°C

90

Power-Supply Rejection Ratio PSRR

T

A

= T

MIN

- T

MAX

dB

Voltage Gain A

VAUX

V

OUT

= 0.7V

RMS

V/V

BIAS OUTPUT (MAX4060/MAX4062)

I

BIAS

= 0.8mA to GND, MAX4060 2

Output Voltage V

OUT

I

BIAS

= 0.5mA to GND, MAX4062 2

V

I

BIAS

= 0.8mA to GND, MAX4060

(T

A

= +25°C)

2

kΩ

Output Resistance R

OUT

I

BIAS

= 0.5mA to GND, MAX4062

(T

A

= +25°C)

22 40 Ω

I

BIAS

= 0.8mA to GND, BW = 22Hz to

22kHz, MAX4060

50

Output Noise Voltage V

NRMS

I

BIAS

= 0.5mA to GND, BW = 22Hz to

22kHz, MAX4062

20

μV

RMS

THD+N

BW

-3dB

THD+N

0.04

1.13

9.6

MAX4061/MAX4062

96 100 104

9.6 10.0 10.4

72

60

200

100

385

0.05

2.2

2.2

65

50

-10.7 -10 -9.3

2.5

10.4

MAX4060/MAX4061/MAX4062

Differential Microphone Preamplifiers with
Internal Bias and Complete Shutdown

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VCC= 3V for MAX4061/MAX4062, VCC= 5V for MAX4060, V

GND

= 0V, V

SHDN

= VCC, V

INT/AUX

= 0V, RG= 11.11kΩ,

R

L

= 100kΩ to 1.5V, R

BIAS

= ∞, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Notes 1, 2)

Note 1: All specifications are 100% tested at TA= +25°C. Specification limits over temperature (TA= T

MIN

to T

MAX

) are guaranteed

by design, not production tested.

Note 2: MAX4062 requires a 1μF capacitor from BIAS to ground.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Power-Supply Rejection Ratio PSRR

DIGITAL INPUTS ( S HD N for M AX 4061 and INT /AU X for M AX 4060/M AX 4062)

Input Leakage Current I

Input-Voltage High V

Input-Voltage Low V

Shutdown Enable Time t

Shutdown Disable Time t

IN

INH

INL

ON

OFF

MAX4060

M AX 4062

VIN = 0V or V

MAX4061 10 μs

MAX4061 10 μs

CC

I

= 0.8mA to GND,

BIAS

= 4.5V to 5.5V

V

CC

I

= 0.8mA, VCC = 5V

BIAS

+ 100mV

I

= 0.5mA to GND,

BIAS

= 2.4V to 5.5V

V

CC

I

= 0.5mA, VCC = 3V

BIAS

+ 100mV

, f = 1kHz

P-P

, f = 1kHz

P-P

50 80

50 74

0.7 x
V

CC

70

71

0.3 x

dB

±1μA

V

V

CC

V

MAX4060/MAX4061/MAX4062

Differential Microphone Preamplifiers with

Internal Bias and Complete Shutdown

_______________________________________________________________________________________

5

Typical Operating Characteristics

(VCC= 3V (MAX4061/MAX4062), VCC= 5V for MAX4060, AV= 10V/V, RL≥ 100kΩ to 1.5V, SHDN = VCC(MAX4061 only),
T

A

= +25°C, unless otherwise noted.)

3

0

-3

-6

GAIN (dB)

-9

-12

-15
10 1M

SUPPLY CURRENT vs. SUPPLY VOLTAGE

0.9

0.8

0.7

0.6

0.5

0.4

0.3

SUPPLY CURRENT (mA)

0.2

0.1

0

2.0 5.5

GAIN vs. FREQUENCY

VCC = 5V

AV = 10V/V
NO LOAD

SUPPLY VOLTAGE (V)

(NO LOAD)

FREQUENCY (Hz)

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY (DIFF INPUT)

0

-20

MAX4060 toc01

-40

-60

PSRR (dB)

-80

-100

100k10k1k100

-120
10 1M

AV = 10V/V

AV = 100V/V

100k10k1k100

FREQUENCY (Hz)

MAX4060 toc02

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

100

MAX4060 toc04

10

1

0.1

0.01

SHUTDOWN SUPPLY CURRENT (nA)

5.04.53.5 4.03.02.5

0.001

-40 85

TEMPERATURE (°C)

603510-15

MAX4060 toc05

SUPPLY CURRENT vs. TEMPERATURE

1.0

0.8

0.6

0.4

SUPPLY CURRENT (mA)

0.2

VCC = 5V

0

-40

TEMPERATURE (°C)

OUTPUT-VOLTAGE HIGH

vs. TEMPERATURE

1000

VOH = VCC - V

100

(mV)

OH

V

10

1

-40 85

OUT

I

= 2.5mA

LOAD

TEMPERATURE (°C)

I

LOAD

VCC = 3V

80655035205-10-25

= 50μA

603510-15

MAX4060 toc03

MAX4060 toc06

OUTPUT-VOLTAGE LOW

vs. TEMPERATURE

1000

I

= 2.5mA

100

(mV)

OL

V

10

1

-40 85

LOAD

I

TEMPERATURE (°C)

LOAD

= 50μA

603510-15

MAX4060 toc07

(mV)

OH

V

OUTPUT-VOLTAGE HIGH

vs. LOAD CURRENT

(mV)

OL

V

300

250

200

150

100

50

0

175

VOH = V

- V

CC

150

125

100

75

50

25

0

05

OUT

MAX4060 toc08

VCC = 3V

4321

LOAD CURRENT (mA)

OUTPUT-VOLTAGE LOW

vs. LOAD CURRENT

05

MAX4060 toc09

VCC = 3V

4321

LOAD CURRENT (mA)