MAXIM MAX9718, MAX9719 Technical data

General Description

The MAX9718/MAX9719 differential input audio power
amplifiers are ideal for portable audio devices with
internal speakers. The differential input structure
improves noise rejection and provides common-mode
rejection. A bridge-tied load (BTL) architecture mini­mizes external component count, while providing high­quality, power audio amplification. The MAX9718 is a
single-channel amplifier while the MAX9719 is a dual­channel amplifier for stereo systems. Both devices
deliver 1.4W continuous average power per channel to
a 4Ω load with less than 1% THD+N while operating
from a single +5V supply. The devices are available as
adjustable gain amplifiers or with internally fixed gains
of 0dB, 3dB, and 6dB to reduce component count.

A shutdown input disables the bias generator and
amplifiers and reduces quiescent current consumption
to less than 100nA. The MAX9718 shutdown input can
be set as active high or active low. These devices fea­ture Maxim’s comprehensive click-and-pop suppres­sion circuitry that reduces audible clicks and pops
during startup and shutdown.

The MAX9718 is pin compatible with the LM4895,
and is available in 9-bump UCSP™, 10-pin TDFN, and
10-pin µMAX

®

packages. The MAX9719 is available in
16-pin TQFN, 16-pin TSSOP, and 16-bump UCSP pack­ages. Both devices operate over the -40°C to +85°C
extended temperature range.

Applications

Mobile Phones

PDAs

Portable Devices

Features

♦ 2.7V to 5.5V Single-Supply Operation

♦ Very High -93dB PSRR at 217Hz
♦ 1.4W into 4Ω at 1% THD+N (per Channel)

♦ Differential Input

♦ Internal Fixed Gain to Reduce Component Count

♦ Adjustable Gain Option (MAX9718A/H/MAX9719A)

♦ 100nA Low-Power Shutdown Mode

♦ No Audible Clicks or Pops at Power-Up/Down

♦ Improved Performance Pin-Compatible Upgrade

to LM4895 (MAX9718D/G)

♦ 1.8V Logic Compatible

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

MAX9719

SINGLE SUPPLY

2.7V TO 5.5V

SHDN

INL+

INL-

INR+

INR-

MAX9718

SINGLE SUPPLY

2.7V TO 5.5V

SHDM

SHDN

IN+

OUT+

OUT-

OUTR-

OUTR+

OUTL-

OUTL+

IN-

Simplified Block Diagrams

19-3050; Rev 4; 9/06

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.

Ordering Information continued at end of data sheet.

Pin Configurations appear at end of data sheet.

EVALUATION KIT

AVAILABLE

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

+Denotes lead-free package.
*EP = Exposed paddle.

PART TEMP RANGE

MAX9718AEBL-T -40°C to +85°C 3 x 3 UCSP ADX

MAX9718AEBL+T -40°C to +85°C 3 x 3 UCSP +ADX

MAX9718AETB-T -40°C to +85°C 10 TDFN-EP* AAV

PIN­PACKAGE

TOP

MARK

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—5V Supply

(VCC= 5V, GND = 0, SHDN/SHDN = VCC(MAX9718/MAX9719), SHDM = GND (MAX9718), RIN= RF= 10kΩ (MAX971_A/H),
T

A

= +25°C. C

BIAS

= 0.1µF, no load. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)

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)

IN_, BIAS, SHDM, SHDN, SHDN Continuous Current ........20mA

OUT_ Short-Circuit Duration to GND or V

CC

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

Continuous Power Dissipation (T

A

= +70°C)

9-Bump UCSP (derate 5.2mW/°C above +70°C)..........412mW

10-Pin TDFN (derate 24.4mW/°C above +70°C) ........1951mW

10-Pin µMAX (derate 10.3mW/°C above +70°C) ..........825mW

16-Bump UCSP (derate 8.2mW/°C above +70°C) .......659mW

16-Pin TQFN (derate 16.9mW/°C above +70°C) ........1349mW

16-Pin TSSOP (derate 21.3mW/°C above +70°C) ......1702mW

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

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

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

Bump Temperature (soldering) Reflow............................+235°C

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

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage V

Supply Current I

Shutdown Supply Current I
SHDN, SHDN, SHDM

Threshold

SHDN, SHDN, SHDM
Threshold

Output Offset Voltage V

Common-Mode Input Voltage V

Input Impedance R

Common-Mode Rejection Ratio CMRR

Power-Supply Rejection Ratio PSRR

Output Power P

Total Harmonic Distortion Plus
Noise

CC

V

= V

= V

IN+

IN+

= V

= V

BIAS

BIAS

CC

SHDN

V

IH

V

IL

V

IH

V

IL

OS

IN-

per amplifier (Note 2)
SHDN = SHDM = SHDN = GND, per amplifier 0.1 1 µA

MAX9718A/B/C/D

MAX9718E/F/G/H

V

IN-

Inferred from
CMRR test

IC

External gain, MAX971_A/H 0.5 VCC - 1.2
MAX971_B/E, MAX971_C/F, MAX971_D/G 10 15 20 kΩ

IN

f

= 1kHz -60

N

V

= V

= V

IN+

BIAS

= 200m V

= 1µF

BIAS

= 1kHz, P

IN

= 5V, AV = 6dB (Note 5)

OUT

THD+N

IN-

V

RIPPLE

R

= 8Ω , C

L

THD+N = 1%,

= 1kHz (Note 4)

f

IN

R

= 8Ω, f

L

V

CC

2.7 5.5 V

, TA = -40°C to +85°C,

0.7 x V

5.0 7.5 mA

CC

0.3 x V

1.4

AV = 0dB, MAX971_A/H,
MAX971_B/E

±1 ±10

AV = 3dB, MAX971_C/F ±1 ±15

AV = 6dB, MAX971_D/G ±1 ±20

AV = 0dB, MAX971_B/E 0.5 V CC - 0.5

AV = 3dB, MAX971_C/F 0.5 V CC - 0.6

A

= 6dB, MAX971_D/G 0.5 V CC - 0.8

V

-50 -60

,

f = 217Hz -93

,

P-P

f = 1kHz -90

R

= 8Ω 0.8 1.1

L

R

= 4Ω 1.4

L

= 0.75W,

OUT

0.002 %

CC

0.4

V

V

mV

V

dB

dB

W

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—5V Supply (continued)

(VCC= 5V, GND = 0, SHDN/SHDN = VCC(MAX9718/MAX9719), SHDM = GND (MAX9718), RIN= RF= 10kΩ (MAX971_A/H),
T

A

= +25°C. C

BIAS

= 0.1µF, no load. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)

ELECTRICAL CHARACTERISTICS—3V Supply

(VCC= 3V, GND = 0, SHDN/SHDN = VCC(MAX9718/MAX9719), SHDM = GND (MAX9718), RIN= RF= 10kΩ (MAX971_A/H),
T

A

= +25°C. C

BIAS

= 0.1µF, no load. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Gain Accuracy MAX971_B/E, MAX971_C/F, MAX971_D/G ±1 %

Channel-to-Channel Gain
Matching

Signal-to-Noise Ratio SNR P

MAX9719B/E, MAX9719C/F, MAX9719D/G ±1 %

OUT

= 1W, R

= 8Ω -104 dB

L

Thermal-Shutdown Threshold +160 °C

Thermal-Shutdown Hysteresis 15 °C

Maximum Capacitive Drive C

Power-Up/Enable from
Shutdown Time

Shutdown Time t

Turn-Off Transient V

LOAD

t

PU

SHDN

POP

Bridge-tied capacitance 500 pF

10 ms

3.5 µs

(Note 6) 50 mV

Crosstalk MAX9719, fIN = 1kHz -85 dB

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Current I

Shutdown Supply Current I

SHDN, SHDN, SHDM
Threshold

Common-Mode Bias Voltage V

Output Offset Voltage V

Common-Mode Input Voltage V

Input Impedance R

Common-Mode Rejection Ratio CMRR

Power-Supply Rejection Ratio PSRR

V

= V

CC

SHDN

V

IH

V

IL

BIAS

IN+

= V

IN-

per amplifier (Note 2)
SHDN = SHDM = SHDN = GND, per amplifier 0.1 1 µA

(Note 3)

, TA = -40°C to +85°C,

BIAS

AV = 0dB, MAX971_A/H

OS

V

= V

IN+

= V

IN-

MAX971_B/E

BIAS

AV = 3dB, MAX971_C/F ±1 ±15

AV = 6dB, MAX971_D/G ±1 ±20

AV = 0dB, MAX971_B/E 0.5 V CC - 0.7

IC

Inferred from
CMRR test

AV = 3dB, MAX971_C/F 0.5 V CC - 0.8

A

= 6dB, MAX971_D/G 0.5 V CC - 1.0

V

External gain, MAX971_A/H 0.5 V CC - 1.2
MAX971_B/E, MAX971_C/F, MAX971_D/G 10 15 20 kΩ

IN

= 1kHz -70

f

N

= V

V

IN-

V

RIPPLE

R

L

C

BIAS

= 8Ω ,

= 1µF

= V

IN+

= 200m V

BIAS

P-P

,

f = 217Hz -93

,

f = 1kHz -90

0.7 x V

CC

V

/2

CC

- 5%

-50 -60

3.8 6.0 mA

0.3 x V

CC

V

/2

V

CC

CC

/2

+ 5%

±1 ±10

V

V

mV

V

dB

dB

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

MAX9718 toc01

FREQUENCY (Hz)

THD+N (%)

100 1k 10k

0.001

0.01

0.1

1

10

0.0001
10 100k

VCC = 5V
R

L

= 4

Ω

A

V

= 2

OUTPUT POWER = 1W

OUTPUT POWER = 50mW

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

MAX9718 toc02

FREQUENCY (Hz)

THD+N (%)

100 1k 10k

0.001

0.01

0.1

1

10

0.0001
10 100k

VCC = 5V
R

L

= 4

Ω

A

V

= 4

OUTPUT POWER = 1W

OUTPUT POWER = 200mW

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

MAX9718 toc03

FREQUENCY (Hz)

THD+N (%)

100 1k 10k

0.001

0.01

0.1

1

10

0.0001
10 100k

VCC = 5V
R

L

= 8

Ω

A

V

= 2

OUTPUT POWER = 250mW

OUTPUT POWER = 750mW

Typical Operating Characteristics

(VCC= 5V, C

BIAS

= 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)

Note 1: All specifications are 100% tested at T

A

= +25°C. Specifications over temperature (TA= T

MIN

to T

MAX

) are guaranteed by

design, not production tested.

Note 2: Quiescent power-supply current is specified and tested with no load. Quiescent power-supply current depends on the offset

voltage when a practical load is connected to the amplifier. Guaranteed by design.

Note 3: Common-mode bias voltage is the voltage on BIAS and is nominally V

CC

/2.

Note 4: Output power is specified by a combination of a functional output current test and characterization analysis.
Note 5: Measurement bandwidth for THD+N is 22Hz to 22kHz.
Note 6: Peak voltage measured at power-on, power-off, into or out of SHDN. Bandwidth defined by A-weighted filters, inputs at AC

GND. V

CC

rise and fall times greater than or equal to 1ms.

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—3V Supply (continued)

(VCC= 3V, GND = 0, SHDN/SHDN = VCC(MAX9718/MAX9719), SHDM = GND (MAX9718), RIN= RF= 10kΩ (MAX971_A/H),
T

A

= +25°C. C

BIAS

= 0.1µF, no load. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Output Power P

Total Harmonic Distortion Plus
Noise

Thermal-Shutdown Threshold +160 °C

Thermal-Shutdown Hysteresis 15 °C

Maximum Capacitive Drive C

Power-Up/Enable from
Shutdown Time

Shutdown Time t

Turn-Off Transient V

Crosstalk MAX9719, fN = 1kHz -85 dB

R

OUT

THD+N

LOAD

t

PU

SHDN

POP

= 8Ω, THD+N = 1%, f

L

R

L

A

V

= 8Ω, f

= 6dB

= 1kHz, P

IN

Bridge-tied capacitance 500 pF

(Note 6) 40 mV

= 1kHz (Note 4) 475 mW

IN

= 0.25W,

OUT

0.003 %

10 ms

3µs

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

_______________________________________________________________________________________ 5

Typical Operating Characteristics (continued)

(VCC= 5V, C

BIAS

= 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

10

VCC = 5V

Ω

= 8

R

L

= 4

A

V

1

0.1

THD+N (%)

0.01

0.001

0.0001
10 100k

OUTPUT POWER = 800mW

OUTPUT POWER = 200mW

100 1k 10k

FREQUENCY (Hz)

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

10

VCC = 3V

Ω

= 8

R

L

A

= 2

V

1

0.1

THD+N (%)

0.01

OUTPUT POWER = 100mW

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

10

VCC = 3V

Ω

= 4

R

L

= 4

A

V

1

0.1

THD+N (%)

0.01

0.001

0.0001
10 100k

OUTPUT POWER = 175mW

OUTPUT POWER = 70mW

100 1k 10k

FREQUENCY (Hz)

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

100

VCC = 5V

Ω

= 4

R

L

A

= 2

V

10

1

THD+N (%)

fIN = 100Hz

0.1

MAX9718 toc04

MAX9718 toc07

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

10

VCC = 3V

Ω

= 4

R

L

= 2

A

V

1

0.1

THD+N (%)

0.01

0.001

0.0001
10 100k

OUTPUT POWER = 50mW

OUTPUT POWER = 250mW

100 1k 10k

FREQUENCY (Hz)

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

10

VCC = 3V

Ω

= 8

R

L

A

= 4

V

1

0.1

THD+N (%)

0.01

OUTPUT POWER = 50mW

MAX9718 toc05

MAX9718 toc08

MAX9718 toc06

MAX9718 toc09

fIN = 10kHz

0.001

0.0001

OUTPUT POWER = 250mW

100 1k 10k

10 100k

FREQUENCY (Hz)

TOTAL HARMONIC DISTORTION PLUS NOISE

0.001

0.0001
10 100k

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

100

VCC = 5V

Ω

= 4

R

L

A

= 4

V

10

1

THD+N (%)

0.1

0.01

0.001

02.0

fIN = 100Hz

fIN = 1kHz

0.5 1.51.0
OUTPUT POWER (W)

fIN = 10kHz

MAX9718 toc10

100

VCC = 5V

= 8

R

L

A

= 2

V

10

1

THD+N (%)

0.1

0.01

0.001

0.2 0.6 0.8 1.0 1.20.4

0 1.4

OUTPUT POWER = 200mW

100 1k 10k

FREQUENCY (Hz)

vs. OUTPUT POWER

Ω

fIN = 1kHz

fIN = 100Hz

OUTPUT POWER (W)

fIN = 10kHz

0.01

0.001

0.2 0.4 0.6 0.8 1.2 1.41.0 1.8

02.0
OUTPUT POWER (W)

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

100

VCC = 5V

Ω

= 8

R

L

A

MAX9718 toc11

THD+N (%)

0.001

= 4

V

10

1

0.1

0.01

0.2 0.6 0.8 1.0 1.20.4

0 1.4

fIN = 100Hz

fIN = 1kHz

OUTPUT POWER (W)

fIN = 1kHz

1.6

MAX9718 toc12

fIN = 10kHz

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

6 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(VCC= 5V, C

BIAS

= 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

100

VCC = 3V

Ω

= 4

R

L

= 2

A

V

10

1

THD+N (%)

0.1

0.01

0.001
100 300 400 500200

0600

fIN = 10kHz

fIN = 1kHz

OUTPUT POWER (mW)

fIN = 100Hz

MAX9718 toc13

THD+N (%)

0.01

0.001

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

100

VCC = 3V

Ω

= 8

R

L

A

10

1

THD+N (%)

0.1

= 4

V

fIN = 1kHz

fIN = 10kHz

MAX9718 toc16

0.001

THD+N (%)

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

100

VCC = 3V

Ω

= 4

R

L

= 4

A

V

10

1

0.1

fIN = 1kHz

100 300 400 500200

0 600

OUTPUT POWER (mW)

fIN = 10kHz

fIN = 100Hz

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. COMMON-MODE VOLTAGE

0.01

VCC = 5V

= 200mW

P

O

= 2

A

V

MAX9718 toc14

MAX9718 toc17

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

100

VCC = 3V

Ω

= 8

R

L

= 2

A

V

10

1

THD+N (%)

0.1

fIN = 1kHz

0.01

0.001
100 300 400 500200

0600

OUTPUT POWER (mW)

fIN = 10kHz

fIN = 100Hz

MAX9718 toc15

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. COMMON-MODE VOLTAGE

0.01

VCC = 3V

= 200mW

P

0.001

THD+N (%)

O

= 2

A

V

MAX9718 toc18

0.01

fIN = 100Hz

0.001
0

100 300 400 500200

OUTPUT POWER (mW)

OUTPUT POWER

vs. SUPPLY VOLTAGE

2.5

2.0

1.5

1.0

OUTPUT POWER

0.5

Ω

RL = 4
f = 1kHz
A

= 2

V

THD+N = 10%

THD+N = 1%

0

2.5 5.5
SUPPLY VOLTAGE (V)

0.0001
13452

0

COMMON-MODE VOLTAGE (V)

OUTPUT POWER

vs. SUPPLY VOLTAGE

1.8

1.6

MAX9718 toc19

1.4

1.2

1.0

0.8

0.6

OUTPUT POWER (W)

0.4

0.2

5.04.54.03.53.0

Ω

RL = 8
f = 1kHz
A

= 2

V

THD+N = 10%

THD+N = 1%

0

2.5 5.5
SUPPLY VOLTAGE (V)

5.04.54.03.53.0

0.0001

MAX9718 toc20

OUTPUT POWER (W)

0.5 1.5 2.0 2.5 3.01.0

0

COMMON-MODE VOLTAGE (V)

OUTPUT POWER

vs. LOAD RESISTANCE

2.0

VCC = 5V

1.8

f = 1kHz

= 2

A

V

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

1

THD+N = 1%

LOAD RESISTANCE (Ω)

MAX9718 toc21

THD+N = 10%

10010

MAX9718/MAX9719

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

_______________________________________________________________________________________ 7

Typical Operating Characteristics (continued)

(VCC= 5V, C

BIAS

= 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)

600

VCC = 3V
f = 1kHz

500

A

V

400

300

200

OUTPUT POWER (mW)

100

0

1

700

VCC = 3V
R

L

600

f = 1kHz
A

V

500

400

300

200

POWER DISSIPATION (mW)

100

0

0700

OUTPUT POWER

vs. LOAD RESISTANCE

1.8

VCC = 5V

= 4

R

1.6

L

= 2

THD+N = 1%

LOAD RESISTANCE (Ω)

MAX9718 toc22

THD+N = 10%

10010

f = 1kHz

1.4

= 2

A

V

1.2

1.0

0.8

0.6

POWER DISSIPATION (W)

0.4

0.2

0

0 1.8

POWER DISSIPATION

vs. OUTPUT POWER

350

Ω

= 4

= 2

OUTPUT POWER (mW)

MAX9718 toc25

600500400300200100

VCC = 3V

= 8

R

L

300

f = 1kHz

= 2

A

V

250

200

150

100

POWER DISSIPATION (mW)

50

0

0 500

POWER DISSIPATION

vs. OUTPUT POWER

Ω

OUTPUT POWER (W)

POWER DISSIPATION

vs. OUTPUT POWER

Ω

OUTPUT POWER (mW)

POWER DISSIPATION

1.0

MAX9718 toc23

0.8

0.6

0.4

POWER DISSIPATION (W)

0.2

0

1.51.20.90.60.3

MAX9718 toc26

400300200100

01.4

150

120

90

60

30

0

-30

GAIN/PHASE (°/dB)

-60

-90

-120

-150
10 100k

vs. OUTPUT POWER

VCC = 5V

Ω

= 8

R

L

f = 1kHz

= 2

A

V

GAIN AND PHASE

AV = 60dB

MAX9718 toc24

1.21.00.80.60.40.2

OUTPUT POWER (W)

vs. FREQUENCY

MAX9718 toc27

10k1k100

FREQUENCY (Hz)

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

0

V

= 200mV

RIPPLE

-10

RL = 8
C

BIAS

-20

-30

-40

-50

PSRR (dB)

-60

-70

-80

-90

-100
10 100k

Ω

= 1μF

VCC = 5V

P-P

VCC = 3V

FREQUENCY (Hz)

MAX9718 toc28

10k1k100

COMMON-MODE REJECTION RATIO

vs. FREQUENCY

0

V

= 200mV

RIPPLE

-10

RL = 8
C

BIAS

-20

-30

-40

-50

CMRR (dB)

-60

-70

-80

-90

-100
10 100k

Ω

= 1μF

VCC = 5V

VCC = 3V

P-P

FREQUENCY (Hz)

MAX9718 toc29

10k1k100