MAXIM MAX4475, MAX4478, MAX4488, MAX4489 Technical data

General Description

The MAX4475–MAX4478/MAX4488/MAX4489 wide­band, low-noise, low-distortion operational amplifiers
offer rail-to-rail outputs and single-supply operation
down to 2.7V. They draw 2.2mA of quiescent supply
current per amplifier while featuring ultra-low distortion
(0.0002% THD+N), as well as low input voltage-noise
density (4.5nV/√Hz) and low input current-noise density
(0.5fA/√Hz). These features make the devices an ideal
choice for applications that require low distortion and/or
low noise.

For power conservation, the MAX4475/MAX4488 offer a
low-power shutdown mode that reduces supply current
to 0.01µA and places the amplifiers’ outputs into a high­impedance state. These amplifiers have outputs which
swing rail-to-rail and their input common-mode voltage
range includes ground. The MAX4475–MAX4478 are
unity-gain stable with a gain-bandwidth product of
10MHz. The MAX4488/4489 are internally compensated
for gains of +5V/V or greater with a gain-bandwidth
product of 42MHz. The single MAX4475/MAX4476/
MAX4488 are available in space-saving, 6-pin SOT23
and TDFN packages.

Applications

ADC Buffers
DAC Output Amplifiers
Low-Noise Microphone/Preamplifiers
Digital Scales
Strain Gauges/Sensor Amplifiers
Medical Instrumentation

Features

o Low Input Voltage-Noise Density: 4.5nV/√Hz
o Low Input Current-Noise Density: 0.5fA/√Hz
o Low Distortion: 0.0002% THD+N (1kΩ load)
o Single-Supply Operation from +2.7V to +5.5V
o Input Common-Mode Voltage Range Includes

Ground

o Rail-to-Rail Output Swings with a 1kΩ Load
o 10MHz GBW Product, Unity-Gain Stable

(MAX4475–MAX4478)

o 42MHz GBW Product, Stable with AV≥ +5V/V

(MAX4488/MAX4489)

o Excellent DC Characteristics

VOS= 70µV
I

BIAS

= 1pA

Large-Signal Voltage Gain = 120dB

o Low-Power Shutdown Mode:

Reduces Supply Current to 0.01µA
Places Output in High-Impedance State

o Available in Space-Saving SOT23, TDFN, µMAX®,

and TSSOP Packages

MAX4475–MAX4478/MAX4488/MAX4489

SOT23, Low-Noise, Low-Distortion,

Wide-Band, Rail-to-Rail Op Amps

________________________________________________________________

Maxim Integrated Products

1

Ordering Information

Selector Guide

19-2137; Rev 5; 7/10

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

Ordering Information continued at end of data sheet.

+

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

*

EP = Exposed pad (connect to VSS).
/V denotes an automotive qualified part.
T = Tape and reel.

Pin Configurations and Typical Operating Circuit appear at
end of data sheet.

Typical Operating Characteristic

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

INPUT VOLTAGE-NOISE DENSITY

25

20

15

10

5

EQUIVALENT INPUT NOISE VOLTAGE (nV/√Hz)

IN

V

0

10 1k 10k100 100k

vs. FREQUENCY

MAX4475 toc20

FREQUENCY (Hz)

PART TEMP RANGE

MAX4475AUT+T

MAX4475AUA+ -40°C to +125°C 8 µMAX —

MAX4475ASA+ -40°C to +125°C 8 SO —

MAX4475ATT+T -40°C to +125°C 6 TDFN-EP* +ADD

MAX4475AUT/V+T -40°C to +125°C 6 SOT23 +ACQQ

-40°C to +125°C 6 SOT23 AAZV

PIN­PACKAGE

TOP

MARK

PART

MAX4475 10 1 1 Yes

MAX4476 10 1 1 —

MAX4477 10 1 2 —

MAX4478 10 1 4 —

MAX4488 42 5 1 Yes

MAX4489 42 5 2 —

G A IN B W

( M H z)

STABLE

GAIN

(V/V)

NO. OF

AMPS

SHDN

MAX4475–MAX4478/MAX4488/MAX4489

SOT23, Low-Noise, Low-Distortion,
Wide-Band, Rail-to-Rail Op Amps

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VDD= +5V, VSS= 0V, VCM= 0V, V

OUT

= VDD/2, RLtied to VDD/2, SHDN = VDD, TA= -40°C to +125°C, unless otherwise noted.

Typical values are at T

A

= +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.

Power-Supply Voltage (VDDto VSS) ......................-0.3V to +6.0V

Analog Input Voltage (IN_+, IN_-)....(V

SS

- 0.3V) to (VDD+ 0.3V)

SHDN Input Voltage....................................(V

SS

- 0.3V) to +6.0V

Output Short-Circuit Duration to Either Supply ..........Continuous

Continuous Input Current (IN+, IN-) .................................±10mA

Continuous Power Dissipation (T

A

= +70°C)

6-Pin SOT23 (derate 9.1mW/°C above +70°C)...........727mW

6-Pin TDFN (derate 18.2mW/°C above 70°C)...........1454mW

8-Pin µMAX (derate 4.5mW/°C above +70°C) ............362mW

8-Pin SO (derate 5.88mW/°C above +70°C)...............471mW

14-Pin SO (derate 8.33mW/°C above +70°C)..............667mW

14-Pin TSSOP (derate 9.1mW/°C above +70°C) .........727mW

Operating Temperature Range .........................-40°C to +125°C

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

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

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

Soldering Temperature (reflow)

SOT23, µMAX, TSSOP, TDFN, and 8-Pin SO...............+260°C

14-Pin SO.....................................................................+240°C

Supply Voltage Range V

Quiescent Supply Current Per
Amplifier

Input Offset Voltage V

Input Offset Voltage Tempco TC

Input Bias Current I

Input Offset Current I

Differential Input Resistance R

Input Common-Mode Voltage
Range

Common-Mode Rejection Ratio CMRR

Power-Supply Rejection Ratio PSRR VDD = 2.7 to 5.5V 90 120 dB

Large-Signal Voltage Gain A

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

(Note 3) 2.7 5.5 V

DD

Normal mode

I

D

Shutdown mode (SHDN = VSS) (Note 2) 0.01 1.0 µA

TA = +25°C ±70 ±350

OS

TA = -40°C to +125°C ±750

VOS

(Note 4) ±1 ±150 pA

B

(Note 4) ±1 ±150 pA

OS

IN

V

Guaranteed by

CM

CMRR Test

(VSS - 0.2V) ≤
V

CM

1.6V)
(V

SS

V

CM

1.7V)

RL = 10kΩ to VDD/2;
V

OUT

RL = 1kΩ to VDD/2;

VOL

V

OUT

RL = 500Ω to VDD/2;
V

OUT

≤ (VDD -

- 0.1V) ≤
≤ (VDD -

= 100mV to (V

= 200mV to (V

= 350mV to (V

VDD = 3V 2.2

V

= 5V 2.5 4.4

DD

±0.3 ±6 µV/°C

1000 GΩ

TA = +25°C-0.2V

= -40°C to +125°C-0.1 V

T

A

TA = +25°C 90 115

TA = -40°C to +125°C90

DD

DD

DD

- 125mV)

- 250mV)

- 500mV)

90 120

85 110

85 110

D D

D D

- 1.6

- 1.7

mA

µV

V

dB

dB

MAX4475–MAX4478/MAX4488/MAX4489

SOT23, Low-Noise, Low-Distortion,

Wide-Band, Rail-to-Rail Op Amps

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

(VDD= +5V, VSS= 0V, VCM= 0V, V

OUT

= VDD/2, RLtied to VDD/2, SHDN = VDD, TA= -40°C to +125°C, unless otherwise noted.

Typical values are at T

A

= +25°C.) (Notes 1, 2)

AC ELECTRICAL CHARACTERISTICS

(VDD= +5V, VSS= 0V, VCM= 0V, V

OUT

= VDD/2, RLtied to VDD/2, SHDN = VDD, TA= +25°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Output Voltage Swing V

Output Short-Circuit Current I

Output Leakage Current I

SHDN Logic Low V
SHDN Logic High V
SHDN Input Current SHDN = VSS to V

Input Capacitance C

OUT

SC

LEAK

IL

IH

IN

|V

IN+

R

L

|V

IN+

R

L

|V

IN+

R

L

Shutdown mode (SHDN = VSS),
V

OUT

| ≥ 10mV,

- V

IN-

= 10kΩ to V

| ≥ 10mV,

- V

IN-

= 1kΩ to V

| ≥ 10mV,

- V

IN-

= 500Ω to V

= VSS to V

DD

DD

DD

/2

/2

/2

DD

DD

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Gain-Bandwidth Product GBWP

Slew Rate SR

Full-Power Bandwidth (Note 5)

MAX4475–MAX4478 AV = +1V/V 10

MAX4488/MAX4489 A

MAX4475–MAX4478 AV = +1V/V 3

MAX4488/MAX4489 A

MAX4475–MAX4478 AV = +1V/V 0.4

MAX4488/MAX4489 A

V

- V

DD

OH

V

- V

OL

SS

V

- V

DD

OH

V

- V

OL

SS

V

- V

DD

OH

V

- V

OL

SS

0.7 x V

DD

= +5V/V 42

V

= +5V/V 10

V

= +5V/V 1.25

V

10 45

10 40

80 200

50 150

mV

100 300

80 250

48 mA

±0.001 ±1.0 µA

0.3 x V

D D

V

V

0.01 1 µA

10 pF

MHz

V/µs

MHz

Peak-to-Peak Input Noise Voltage

e

Input Voltage-Noise Density e

Input Current-Noise Density i

Total Harmonic Distortion Plus
Noise (Note 6)

THD + N

n

f = 0.1Hz to 10Hz 260 nV

-

P-P

f = 10Hz 21

f = 1kHz 4.5

n

nV/√Hz

f = 30kHz 3.5
f = 1kHz 0.5 fA/√Hz

n

V

OUT

A

= +1V/V

V

(MAX4475–MAX4478),

= 10kΩ to GND

R

L

V

OUT

= +1V/V

A

V

(MAX4475–MAX4478),

= 1kΩ to GND

R

L

V

OUT

A

= +5V/V

V

(MAX4488/MAX4489),

= 10kΩ to GND

R

L

= 2V

= 2V

= 2V

P-P

P-P

P-P

,

f = 1kHz 0.0002

f = 20kHz 0.0007

,

,

f = 1kHz 0.0002

f = 20kHz 0.001

f = 1kHz 0.0004

%

f = 20kHz 0.0006

4

2

10

8

6

12

14

16

18

-50 -30 -20-40 -100 1020304050

INPUT OFFSET VOLTAGE DISTRIBUTION

MAX4475-8 toc1

VOS (µV)

PERCENTAGE OF UNITS (%)

0

-250

-100

-150

-200

0

-50

200

150

100

50

250

-50 -25 0 25 50 75 100 125

OFFSET VOLTAGE vs. TEMPERATURE

MAX4475 toc02

TEMPERATURE (°C)

INPUT OFFSET VOLTAGE (µV)

V

COM

= 0V

0

10

30

20

40

50

-0.5 1.50.5 2.5 3.5 4.5

INPUT OFFSET VOLTAGE

vs. INPUT COMMON-MODE VOLTAGE

MAX4475 toc03

INPUT COMMON-MODE VOLTAGE (V)

INPUT OFFSET VOLTAGE (µV)

VDD = 3V

V

DD

= 5V

Typical Operating Characteristics

(VDD= +5V, VSS= 0V, VCM= 0V, V

OUT

= VDD/2, RLtied to VDD/2, input noise floor of test equipment =10nV/√Hz for all distortion

measurements, T

A

= +25°C, unless otherwise noted.)

MAX4475–MAX4478/MAX4488/MAX4489

SOT23, Low-Noise, Low-Distortion,
Wide-Band, Rail-to-Rail Op Amps

4 _______________________________________________________________________________________

Note 1: All devices are 100% tested at TA= +25°C. Limits over temperature are guaranteed by design.
Note 2: SHDN is available on the MAX4475/MAX4488 only.
Note 3: Guaranteed by the PSRR test.
Note 4: Guaranteed by design.
Note 5: Full-power bandwidth for unity-gain stable devices (MAX4475–MAX4478) is measured in a closed-loop gain of +2V/V to

accommodate the input voltage range, V

OUT

= 4V

P-P

.

Note 6: Lowpass-filter bandwidth is 22kHz for f = 1kHz and 80kHz for f = 20kHz. Noise floor of test equipment = 10nV/√Hz.

AC ELECTRICAL CHARACTERISTICS (continued)

(VDD= +5V, VSS= 0V, VCM= 0V, V

OUT

= VDD/2, RLtied to VDD/2, SHDN = VDD, TA= +25°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Total Harmonic Distortion Plus
Noise (Note 6)

Capacitive-Load Stability No sustained oscillations 200 pF

Gain Margin GM 12 dB

Phase Margin ΦM

Settling Time To 0.01%, V

Delay Time to Shutdown t

Enable Delay Time from Shutdown t

,

= 2V

V

OUT

THD + N

P-P

= +5V/V

A

V

(MAX4488/MAX4489),
R

= 1kΩ to GND

L

f = 1kHz 0.0005

f = 20kHz 0.008

MAX4475–MAX4478, AV = +1V/V 70

MAX4488/MAX4489, A

SH

V

EN

OUT

OUT

= 2.5V, V

OUT

= +5V/V 80

V

= 2V step 2 µs

settles to 0.1% 10 µs

1.5 µs

%

degrees

Power-Up Delay Time VDD = 0 to 5V step, V

stable to 0.1% 13 µs

OUT

Typical Operating Characteristics (continued)

(VDD= +5V, VSS= 0V, VCM= 0V, V

OUT

= VDD/2, RLtied to VDD/2, input noise floor of test equipment =10nV/√Hz for all distortion

measurements, T

A

= +25°C, unless otherwise noted.)

MAX4475–MAX4478/MAX4488/MAX4489

SOT23, Low-Noise, Low-Distortion,

Wide-Band, Rail-to-Rail Op Amps

_______________________________________________________________________________________

5

OUTPUT VOLTAGE

vs. OUTPUT LOAD CURRENT

0.25
VDD = 3V OR 5V

= ±10mV

V

DIFF

0.20

0.15

VDD - V

0.10

OUTPUT VOLTAGE (V)

0.05

0

045231678910

OUTPUT LOAD CURRENT (mA)

OH

V

OL

LARGE-SIGNAL VOLTAGE GAIN

vs. OUTPUT VOLTAGE SWING

130

120

110

100

(dB)

V

A

90

80

70

60

50

RL = 2k

0 50 100 150 200 250

V

SWING FROM EITHER SUPPLY (mV)

OUT

Ω

RL = 20k

R

RL = 200k

Ω

REFERENCED TO GND

L

LARGE-SIGNAL VOLTAGE GAIN

vs. OUTPUT VOLTAGE SWING

130

RL = 200k

120

110

100

(dB)

90

V

A

80

70

60

50

0 50 100 150 200 250

Ω

RL = 20k

Ω

V

SWING FROM EITHER SUPPLY (mV)

OUT

RL = 2k

REFERENCED TO V

R

L

Ω

OUTPUT VOLTAGE SWING (VOL)

vs. TEMPERATURE

70

60

50

40

30

20

10

0

-50 0 25-25 50 75 100 125

RL = 1k

TEMPERATURE (°C)

LARGE-SIGNAL VOLTAGE GAIN

vs. OUTPUT VOLTAGE SWING

130

120

RL = 2k

110

100

90

80

70

60

50

0 50 100 150 200 250

V

SWING FROM EITHER SUPPLY (mV)

OUT

Ω

R

SUPPLY CURRENT vs. TEMPERATURE

3.0
PER AMPLIFIER

2.5

2.0

1.5

1.0

0.5

0

-50 25 50-25 0 75 100 125

TEMPERATURE (°C)

Ω

VDD = 3V

VDD = 5V

DD

MAX4475 toc04

MAX4475 toc07

MAX4475 toc10

OUTPUT VOLTAGE SWING (VOH)

vs. TEMPERATURE

70

60

50

(mV)

40

OH

- V
30

DD

V

20

10

0

-50 0 25-25 50 75 100 125

RL = 1k

Ω

RL = 10k

TEMPERATURE (°C)

LARGE-SIGNAL VOLTAGE GAIN

vs. OUTPUT VOLTAGE SWING

130

120

110

100

(dB)

90

V

A

80

70

60

50

0 50 100 150 200 250

V

SWING FROM EITHER SUPPLY (mV)

OUT

RL = 2k

RL = 20k

Ω

Ω

REFERENCED TO V

R

L

LARGE-SIGNAL VOLTAGE GAIN

vs. TEMPERATURE

140

130

120

110

100

(dB)

VOL

90

A

80

70

60

V

OUT

50

-50 0 25-25 50 75 100 125

RL = 10k

= 150mV TO 4.75V

TEMPERATURE (°C)

RL = 100k

Ω

Ω

RL = 200k

VDD = 3V

Ω

MAX4475 toc05

(mV)

OL

V

MAX4475 toc08

Ω

(dB)

V

A

DD

MAX4475 toc11

SUPPLY CURRENT (mA)

Ω

RL = 10k

RL = 200k

RL = 20k

Ω

REFERENCED TO GND

L

VDD = 5V

MAX4475 toc06

Ω

MAX4475 toc09

Ω

MAX4475 toc12

MAX4475–MAX4478/MAX4488/MAX4489

SOT23, Low-Noise, Low-Distortion,
Wide-Band, Rail-to-Rail Op Amps

6 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(VDD= +5V, VSS= 0V, VCM= 0V, V

OUT

= VDD/2, RLtied to VDD/2, input noise floor of test equipment =10nV/√Hz for all distortion

measurements, T

A

= +25°C, unless otherwise noted.)

0

1.0

0.5

2.0

1.5

2.5

3.0

2.5 3.5 4.03.0 4.5 5.0 5.5

SUPPLY CURRENT vs. SUPPLY VOLTAGE

MAX4475 toc13

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (mA)

PER AMPLIFIER

0

1.0

0.5

2.0

1.5

2.5

3.0

021345

SUPPLY CURRENT vs. OUTPUT VOLTAGE

MAX4475 toc14

OUTPUT VOLTAGE (V)

SUPPLY CURRENT (mA)

VDD = 5V

V

DD

= 3V

-20

-15

-10

-5

0

5

10

15

20

2.5 3.53.0 4.0 4.5 5.0 5.5

INPUT OFFSET VOLTAGE

vs. SUPPLY VOLTAGE

MAX4475 toc15

SUPPLY VOLTAGE (V)

INPUT OFFSET VOLTAGE (µV)

MAX4475–MAX4478

GAIN AND PHASE vs. FREQUENCY

INPUT FREQUENCY (Hz)

100 100k 1M 10M1k 10k 100M

GAIN (dB)

60

-40

-30

-20

-10

0

10

20

50

40

30

-180

PHASE (degrees)

180

-144

-108

-72

-36

0

36

144

108

72

MAX4475 toc16

VDD = 3V OR 5V

R

L

= 50k

Ω

C

L

= 20pF

A

V

= +1000V/V

GAIN

PHASE

MAX4488/MAX4489

GAIN AND PHASE vs. FREQUENCY

INPUT FREQUENCY (Hz)

100 100k 1M 10M1k 10k 100M

GAIN (dB)

60

-40

-30

-20

-10

0

10

20

50

40

30

-180

PHASE (degrees)

180

-144

-108

-72

-36

0

36

144

108

72

MAX4475 toc17

VDD = 3V OR 5V
R

L

= 50k

Ω

C

L

= 20pF

A

V

= +1000V/V

GAIN

PHASE

1000 100,000

-130

-10

-20

-30

-40

-50

-60

-70

-80

-90

-100

-110

-120

0

0.001 0.1 10

MAX4475–MAX4478

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

MAX4475 toc18

FREQUENCY (kHz)

PSRR (dB)

VDD = 3V OR 5V

1000

100

10

1

0.1

0.01
1 100 1k10 10k

OUTPUT IMPEDANCE vs. FREQUENCY

MAX4475 toc19

FREQUENCY (Hz)

OUTPUT IMPEDANCE (Ω)

AV = +5

AV = +1

MAX4475–MAX4478/MAX4488/MAX4489

SOT23, Low-Noise, Low-Distortion,

Wide-Band, Rail-to-Rail Op Amps

_______________________________________________________________________________________

7

Typical Operating Characteristics (continued)

(VDD= +5V, VSS= 0V, VCM= 0V, V

OUT

= VDD/2, RLtied to VDD/2, input noise floor of test equipment =10nV/√Hz for all distortion

measurements, T

A

= +25°C, unless otherwise noted.)

1µs/div

MAX4475–MAX4478

LARGE-SIGNAL PULSE RESPONSE

VDD = 3V, RL = 10kΩ, CL = 100pF
V

IN

= 2V

0.5V

MAX4475 toc27

2.5V

4µs/div

MAX4475–MAX4478

SMALL-SIGNAL PULSE RESPONSE

VDD = 3V, RL = 10kΩ, CL = 100pF
V

IN

= 100mV PULSE

0.5V

MAX4475 toc28

0.6V

20mV/div

INPUT VOLTAGE-NOISE DENSITY

vs. FREQUENCY

25

20

15

10

5

EQUIVALENT INPUT NOISE VOLTAGE (nV/√Hz)

IN

V

0

10 1k 10k100 100k

FREQUENCY (Hz)

MAX4488/MAX4489

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT VOLTAGE SWING

10

AV = +5

= 100k

R

Ω

L

1

0.1

MAX4475

vs. OUTPUT VOLTAGE SWING

Ω

fO = 20kHz, FILTER BW = 80kHz

OUTPUT VOLTAGE (V

MAX4475–MAX4478

vs. FREQUENCY

= 2V

P-P

Ω

MAX4475 toc20

MAX4475 toc23

200nV/div

0.01

0.1Hz TO 10Hz

VDD = 3V OR 5V

NOISE = 260nV

V

P-P

P-P

1s/div

P-P

NOISE

MAX4488/MAX4489

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. FREQUENCY

MAX4475 toc21

MAX4475 toc24

TOTAL HARMONIC DISTORTION PLUS NOISE

10

AV = +1

= 100k

R

L

1

0.1

THD + N (%)

0.01

0.001

fO = 3kHz, FILTER BW = 30kHz

0.0001
02134

TOTAL HARMONIC DISTORTION PLUS NOISE

0.01
FILTER BW = 80kHz

V

OUT

AV = +1

= 1k

R

L

MAX4475 toc22

)

P-P

MAX4475 toc25

0.01

THD + N (%)

0.001

0.0001

0.00001

VDD = 3V, fO = 3kHz
FILTER BW = 30kHz

0213

OUTPUT VOLTAGE (V

MAX4488/MAX4489

TOTAL HARMONIC DISTORTION PLUS NOISE

1

FILTER BW = 80kHz
R
R
V

0.1

0.01

THD + N (%)

0.001

0.0001
0 5k 15k 20k

vs. FREQUENCY

= 10kΩ TO GND

L

= 2.43kΩ, R2 = 10k

1

= 2.75V

OUT

P-P

FREQUENCY (Hz)

VDD = +3V, fO = 20kHz
FILTER BW = 80kHz

P-P

Ω

AV = +5, VDD = 3V

AV = +5, VDD = 5V

10k

0.001

THD + N (%)

FILTER BW = 22kHz

= 10kΩ TO GND

R

L

R1 = 5.6kΩ, R2 = 53k

= 2V

V

OUT

0.0001
0 10k 20k

)

MAX4475 toc26

P-P

5k 15k

AV = +10, VDD = 3V

AV = +10, VDD = 5V

Ω

FREQUENCY (Hz)

THD + N (%)

RL TO VDD/2

0.001
0 20k

5k 10k 15k

FREQUENCY (Hz)

RL TO GND

RL TO V

DD