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 thin QFN
(3mm x 3mm x 0.8mm) and 8-pin µMAX packages. The
MAX4062 is available in a 10-pin µMAX package.

Applications

Features

♦ 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)

MAX4060/MAX4061/MAX4062

Differential Microphone Preamplifiers with

Internal Bias and Complete Shutdown

________________________________________________________________ Maxim Integrated Products 1

Typical Operating Circuit

Ordering Information

19-2408; Rev 1; 1/03

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.

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

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

*EP = Exposed paddle.

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

BIAS

PART

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

MAX4060EUA -40°C to +85°C 8 µMAX —

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

MAX4061EUA -40°C to +85°C 8 µMAX —

MAX4062EUB -40°C to +85°C 10 µMAX —

TEMP

RANGE

PIN­PACKAGE

TOP

MARK

OUT

5

IN+

6

IN-

x10

V

BIAS

GND

BIAS

7

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, GND = 0V, SHDN = VCC, 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)

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 Thin QFN (derate 4.7mW/°C above +70°C) ......379mW

8-Pin µMAX (derate 4.1mW/°C above +70°C) ............330mW

10-Pin µMAX (derate 5.6mW/°C above +70°C) .........444mW

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

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 (INT/AUX = 0V for MAX4060/MAX4062, default for MAX4061)

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

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

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

0.75 1.2 mA

1.25 1.5 1.75 V

30

±0.1 ±5mV

12V

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, GND = 0V, SHDN = VCC, 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

VAUXVOUT

= 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 2

kΩ

Output Resistance R

OUT

I

BIAS

= 0.5mA to GND, MAX4062 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

MAX4061/MAX4062

9.6

96 100 104

10.4

9.6 10.0 10.4

72

60

200

100

385

-10.7 -10 -9.3

65

50

0.05

2.2

2.2

2.5

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, GND = 0V, SHDN = VCC, 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.

Power-Supply Rejection Ratio PSRR

DIGITAL INPUTS ( SHD 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

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

IN

INH

INL

ON

OFF

I

= 0.8mA to GND,

BIAS

= 4.5V to 5.5V

V

MAX4060

M AX 4062

VIN = 0V or V

MAX4061 10 µs

MAX4061 10 µs

CC

CC

I

= 0.8mA, VCC = 5V

BIAS

+ 100mV

I

BIAS

V

CC

I

BIAS

+ 100mV

, f = 1kHz

P-P

= 0.5mA to GND,

= 2.4V to 5.5V

= 0.5mA, VCC = 3V

, f = 1kHz

P-P

50 80

50 74

✿

0.7
V

CC

70

71

dB

±1µA

V

✿

0.3
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

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

(NO LOAD)

VCC = 5V

100k10k1k100

FREQUENCY (Hz)

SUPPLY CURRENT vs. SUPPLY VOLTAGE

AV = 10V/V
NO LOAD

5.04.53.5 4.03.02.5

SUPPLY VOLTAGE (V)

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY (DIFF INPUT)

0

-20

MAX4060 toc01

-40

-60

PSRR (dB)

-80

-100

-120
10 1M

AV = 10V/V

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

100

MAX4060 toc04

10

1

0.1

0.01

SHUTDOWN SUPPLY CURRENT (nA)

0.001

-40 85

FREQUENCY (Hz)

TEMPERATURE (°C)

AV = 100V/V

100k10k1k100

603510-15

MAX4060 toc02

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)

VOH 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

1000

I

= 2.5mA

100

(mV)

OL

V

10

1

-40 85

LOAD

TEMPERATURE (°C)

I

LOAD

VOL vs. TEMPERATURE

= 50µA

603510-15

MAX4060 toc07

(mV)
V

175

VOH = V

- V

CC

150

125

100

OH

75

50

25

0

05

OUT

MAX4060 toc08

VCC = 3V

4321

LOAD CURRENT (mA)

300

250

200

(mV)

150

OL

V

100

50

0

05

VOH vs. LOAD CURRENT

VOL vs. LOAD CURRENT

MAX4060 toc09

VCC = 3V

4321

LOAD CURRENT (mA)

MAX4060/MAX4061/MAX4062

Differential Microphone Preamplifiers with
Internal Bias and Complete Shutdown

6 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(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.)

MAX4060

MIC BIAS VOLTAGE vs. TEMPERATURE

MAX4060 toc10

TEMPERATURE (°C)

MIC BIAS VOLTAGE (V)

6035-15 10

2.125

2.150

2.175

2.200

2.225

2.250

2.275

2.300

2.100

-40 85

I

BIAS

= 800µA

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY (DIFF INPUT)

MAX4060 toc11

FREQUENCY (Hz)

THD+N (%)

10k1k100

0.01

0.1

1

0.001
10 100k

V

OUT

= 2.26V

P-P

VCC = 5V

VCC = 3V

MAX4060 toc12

FREQUENCY (Hz)

THD+N (%)

10k1k100

0.01

0.1

1

0.001
10 100k

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY (AUX INPUT)

VCC = 3V

VCC = 5V

V

OUT

= 2.26V

P-P

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT AMPLITUDE

(DIFF INPUT, V

CC

= 3V)

MAX4060 toc13

OUTPUT VOLTAGE (V

P-P

)

THD+N (%)

2.52.01.51.00.5

0.01

0.1

1

10

0.001
0 3.0

f = 10kHz

f = 1kHz

BW = 22kHz

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT AMPLITUDE

(DIFF INPUT, V

CC

= 5V)

MAX4060 toc14

OUTPUT VOLTAGE (V

P-P

)

THD+N (%)

3.02.52.01.51.00.5

0.01

0.1

1

10

0.001
0 3.5

f = 10kHz

f = 1kHz

BW = 22kHz

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT AMPLITUDE

(AUX INPUT, V

CC

= 3V)

MAX4060 toc15

OUTPUT VOLTAGE (V

P-P

)

THD+N (%)

2.52.01.51.00.5

0.01

0.1

1

10

0.001
0 3.0

f = 10kHz

f = 1kHz

BW = 22kHz

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT AMPLITUDE

(AUX INPUT, V

CC

= 5V)

MAX4060 toc16

OUTPUT VOLTAGE (V

P-P

)

THD+N (%)

3.02.52.01.51.00.5

0.01

0.1

1

10

0.001
0

3.5

f = 10kHz

f = 1kHz

BW = 22kHz

MAX4060 toc17

FREQUENCY (Hz)

(nV/√Hz)

10k1k100

100

200

300

400

500

600

700

800

0

10 100k

INPUT-REFERRED NOISE

vs. FREQUENCY (DIFF INPUT)

MAX4060

MIC BIAS OUTPUT NOISE

MAX4060 toc18

100ms/div

5µV/div

VCC = 5V
BW = 22Hz TO 22kHz