MAXIM MAX9890 Technical data

General Description

The MAX9890 provides click-and-pop suppression for
devices such as CODECs with integrated headphone
amplifiers that lack a clickless/popless startup/power­up or shutdown/power-down. The device controls the
ramping of the DC bias voltage on the output-coupling
capacitors and the application of the audio signal to
ensure that no audible transients are present at the
headphones. The MAX9890A features a 200ms startup
time for use with up to 100µF coupling capacitors. The
MAX9890B features a 330ms startup time for use with
greater than 100µF coupling capacitors.

The MAX9890 consumes 14µA of supply current and

0.001µA in shutdown, while contributing less than

0.003% THD+N into a 32Ω load. ESD (Human Body
Model) protection circuitry on the outputs protect the
MAX9890 and devices further up the signal chain from
ESD strikes up to ±8kV.

The MAX9890 is available in a miniature (1.5mm ✕

1.5mm ✕ 0.6mm) 9-bump chip-scale package (UCSP™),
as well as an 8-pin TDFN package (3mm ✕ 3mm ✕

0.8mm), and is specified for operation over the

-40°C to +85°C extended temperature range.

Applications

High-End Notebook Audio PDAs

Portable DVD Players Cell Phones

Portable MP3 Players

Features

♦ 36dB Click-Pop Suppression

♦ 2.7V to 5.5V Single-Supply Operation

♦ Clickless/Popless Startup/Power-Up and

Shutdown/Power-Down

♦ 0.001µA Low-Power Shutdown Mode

♦ THD+N < 0.003% Into 32Ω

♦ ±8kV ESD Protected Outputs (Human Body Model)

♦ Requires Only One 0.1µF Capacitor to Complete

the Circuit

♦ Low 14µA Supply Current

♦ Tiny Packaging

9-Bump UCSP (1.5mm x 1.5mm x 0.6mm)
8-Pin TDFN (3mm x 3mm x 0.8mm)

MAX9890

Audio Click-Pop Suppressor

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-2932; Rev 2; 5/04

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.

EVALUATION KIT

AVAILABLE

PART

TEMP RANGE

PIN­PACKAGE

TOP

MARK

M AX 9890AE BL- T

9 UCSP-9 ADV

MAX9890AETA

AHA

M AX 9890BE BL- T

9 UCSP-9 ADW

MAX9890BETA

AHB

Selector Guide

PART

SWITCH TURN-ON

TIME (ms)

MAX9890AEBL-T 9 UCSP-9 200

MAX9890AETA 8 TDFN-EP 200

MAX9890BEBL-T 9 UCSP-9 330

MAX9890BETA 8 TDFN-EP 330

UCSP is a trademark of Maxim Integrated Products, Inc.

**EP = Exposed pad.

Simplified Block Diagram

RAMP

UP

SINGLE SUPPLY

2.7V TO 5.5V

MAX9890

INL

INR

OUTL

OUTR

RAMP

DOWN

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

-40°C to +85°C

-40°C to +85°C 8 TDFN-EP**

-40°C to +85°C

-40°C to +85°C 8 TDFN-EP**

PIN-PACKAGE

MAX9890

Audio Click-Pop Suppressor

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

(All Voltages are Referenced to GND)
V

CC

........................................................................................+6V

CEXT,

SHDN, OUT_ .................................................-0.3V to +6V

IN_ ..............................................................-0.3V to (V

CC

+ 0.3V)

Continuous Current (IN_, OUT_).....................................±150mA

Continuous Current (All Other Pins) .................................±20mA

Continuous Power Dissipation (T

A

= +70°C)

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

9-Bump UCSP (derate 4.7mW/°C above +70°C)..........379mW

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

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

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

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

Bump Temperature (soldering)

Reflow ...........................................................................+235°C

ELECTRICAL CHARACTERISTICS

(VCC= 3V, SHDN = VCC, GND = 0, C

CEXT

= 0.1µF, TA= T

MIN

to T

MAX

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

(Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage Range V

CC

Inferred from RON test 2.7 5.5 V

Supply Current I

CC

(Note 2) 14 22 µA

Shutdown Supply Current I

SHDN

SHDN = GND

1µA

Input Voltage Range Inferred from RON test 0

V

VCC = 5.5V 0.4 1

On-Resistance R

ON

Over input voltage
range

V

CC

= 2.7V 0.7 1.5

Ω

On-Resistance Flatness

)

Over input voltage range 2 mΩ

Output Discharge Resistance

)

kΩ

Input Off-Leakage Current SHDN = GND

1µA

VCC Power-Down Threshold
(Note 3)

V

UVLO

VCC falling 2.5 V

Click-Pop Reduction 36 dB

ESD Protection OUT_, Human Body Model ±8kV

DYNAMIC

MAX9890A

Turn-On Time (Note 4) t

ON

MAX9890B

ms

Turn-Off Time t

OFF

(Note 5)

ns

Bandwidth

kHz

Total Harmonic Distortion Plus
Noise

RL = 32Ω, 30mW, f = 1kHz

%

Off-Isolation, IN_ to OUT_ f = 20kHz, SHDN = GND, RL = 32Ω

dB

Crosstalk (Switches ON) f = 20kHz

dB

V

RIPPLE

= 0.5V

P-P

at 20Hz, fIN = 3kHz at

1V

P-P

, RL = 32Ω

V

RIPPLE

= 0.5V

P-P

at 1kHz, fIN = 3kHz at

1V

P-P

, RL = 32Ω

Power-Supply Rejection Ratio
(Note 6)

PSRR

V

RIPPLE

= 0.5V

P-P

at 20kHz, fIN = 3kHz

at 1V

P-P

, RL = 32Ω

-84

dB

0.001

V

CC

R

FLAT(ON

R

OUT(DIS

THD+N

220

0.001

200

330

120

>100

0.003

-108

-100

-100

-100

MAX9890

Audio Click-Pop Suppressor

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= 3V, SHDN = VCC, GND = 0, C

CEXT

= 0.1µF, TA= T

MIN

to T

MAX

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

(Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

LOGIC INPUT (SHDN)

Logic-Input High Voltage V

IH

VCC = 2.7V to 5.5V 2.0 V

Logic-Input Low Voltage V

IL

VCC = 2.7V to 5.5V 0.8 V

Logic-Input Current I

IN

±1 µA

Note 1: All devices are 100% tested at TA= +25°C. All temperature limits are guaranteed by design.
Note 2: Supply current is measured when switch is on (i.e., SHDN = V

CC

, t > tON).

Note 3: Supply voltage level where the device enters its power-down cycle.
Note 4: Turn-on time is measured from the time V

CC

= 3V and SHDN > VIHuntil the RONspecification is met.

Note 5: Switch turn-off time is measured from the time SHDN < V

IL

or VCC< V

UVLO

until the off-isolation specification is met.

Note 6: See the Power-Supply Rejection Ratio section for test method.

Typical Operating Characteristics

(VCC= 3V, C

CEXT

= 0.1µF, typical values are at TA= +25°C, unless otherwise noted.)

ON-RESISTANCE vs. IN_ VOLTAGE

MAX9890 toc01

IN_ VOLTAGE (V)

ON-RESISTANCE (Ω)

4321

0.3

0.4

0.5

0.6

0.7

0.8

0.2
05

VCC = 3V

VCC = 5V

SUPPLY CURRENT vs. TEMPERATURE

MAX9890 toc02

TEMPERATURE (°C)

SUPPLY CURRENT (μA)

6035-15 10

5

10

15

20

25

30

35

40

0

-40 85

VCC = 5.5V

VCC = 2.7V

SHUTDOWN CURRENT vs. TEMPERATURE

MAX9890 toc03

TEMPERATURE (°C)

SHUTDOWN CURRENT (pA)

603510-15

100

200

300

400

500

600

700

800

900

1000

0

-40 85

VCC = 2.7V

VCC = 5.5V

SHDN = 0V

MAX9890

Audio Click-Pop Suppressor

4 _______________________________________________________________________________________

FREQUENCY (Hz)

ON-LOSS (dB)

10k1k10010 100k

ON-LOSS vs. FREQUENCY

MAX9890 toc04

-0.6

-0.2

0.2

0.6

1.0

-1.0

-0.8

-0.4

0

0.4

0.8

RL = 32Ω

RL = 16Ω

PHASE SHIFT (DEGREES)

-4

-3

-2

-1

0

1

2

-5

FREQUENCY (Hz)

10010

PHASE SHIFT vs. FREQUENCY

MAX9890 toc05

RL = 32Ω

RL = 16Ω

10k1k 100k

OFF-ISOLATION (dB)

-130

-110

-90

-70

-50

-30

-10

10

-150

FREQUENCY (Hz)

10k1k10010 100k

OFF-ISOLATION vs. FREQUENCY

MAX9890 toc06

RL = 32Ω

RL = 16Ω

CROSSTALK (dB)

-140

-130

-120

-110

-100

-90

-80

-70

-60

-50

-150

FREQUENCY (Hz)

10k1k10010 100k

CROSSTALK vs. FREQUENCY

MAX9890 toc07

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. OUTPUT POWER

MAX9890 toc08

OUTPUT POWER (mW)

THD+N (%)

225200175150125100755025

0.001

0.1

0.01

1

10

100

0.0001
0 250

VCC = 5V
R

L

= 16Ω

f = 1kHz

TOTAL HARMONIC DISTORTION PLUS

NOISE vs. OUTPUT POWER

MAX9890toc09

OUTPUT POWER (mW)

THD+N (%)

14012010080604020

0.001

0.01

0.1

1

10

100

0.0001
0160

VCC = 5V
R

L

= 32Ω

f = 1kHz

TOTAL HARMONIC DISTORTION PLUS

NOISE vs. OUTPUT POWER

MAX9890toc10

OUTPUT POWER (mW)

THD+N (%)

125100755025

0.001

0.01

0.1

1

10

100

0.0001
0 150

VCC = 3V
R

L

= 16Ω

f = 1kHz

TOTAL HARMONIC DISTORTION PLUS

NOISE vs. OUTPUT POWER

MAX9890toc11

OUTPUT POWER (mW)

THD+N (%)

70605040302010

0.001

0.01

0.1

1

10

100

0.0001
080

VCC = 3V
R

L

= 32Ω

f = 1kHz

TOTAL HARMONIC DISTORTION PLUS

NOISE vs. FREQUENCY

MAX9890toc12

FREQUENCY (Hz)

THD+N (%)

10k1k100

0.001

0.01

0.1

1

0.0001

10 100k

VCC = 5V
R

L

= 16Ω

OUTPUT POWER = 150mW

OUTPUT POWER = 25mW

Typical Operating Characteristics (continued)

(VCC= 3V, C

CEXT

= 0.1µF, typical values are at TA= +25°C, unless otherwise noted.)

MAX9890

Audio Click-Pop Suppressor

_______________________________________________________________________________________ 5

TOTAL HARMONIC DISTORTION PLUS

NOISE vs. FREQUENCY

MAX9890toc13

FREQUENCY (Hz)

THD+N (%)

10k1k100

0.001

0.01

0.1

1

0.0001
10 100k

VCC = 5V
R

L

= 32Ω

OUTPUT POWER = 70mW

OUTPUT POWER = 20mW

TOTAL HARMONIC DISTORTION PLUS

NOISE vs. FREQUENCY

MAX9890toc14

FREQUENCY (Hz)

THD+N (%)

10k1k100

0.001

0.01

0.1

1

0.0001
10 100k

VCC = 3V
R

L

= 16Ω

OUTPUT POWER = 60mW

OUTPUT POWER = 20mW

TOTAL HARMONIC DISTORTION PLUS

NOISE vs. FREQUENCY

MAX9890toc14

FREQUENCY (Hz)

THD+N (%)

10k1k100

0.001

0.01

0.1

1

0.0001
10 100k

VCC = 3V
R

L

= 32Ω

OUTPUT POWER = 30mW

OUTPUT POWER = 15mW

SHDN
2V/div

V

OUT

1V/div

V

HEADPHONE

10mV/div

40ms/div

STARTUP WAVEFORM (DC)

MAX9890 toc16

SHDN
2V/div

V

OUT

1V/div

V

HEADPHONE

10mV/div

10s/div

SHUTDOWN WAVEFORM (DC)

MAX9890 toc17

SHDN
2V/div

V

OUT

1V/div

V

HEADPHONE

1V/div

40ms/div

STARTUP WAVEFORM (AC)

MAX9890 toc18

SHDN
2V/div

V

OUT

1V/div

V

HEADPHONE

1V/div

1s/div

SHUTDOWN WAVEFORM (AC)

MAX9890 toc19

Typical Operating Characteristics (continued)

(VCC= 3V, C

CEXT

= 0.1µF, typical values are at TA= +25°C, unless otherwise noted.)

MAX9890

Detailed Description

The MAX9890 provides click-and-pop suppression for
single-supply devices such as CODECs and other
headphone amplifiers that do not have click-and-pop
suppression. Single-supply audio amplifier outputs
have a DC bias voltage, V

CC

/ 2, and require large out­put-coupling capacitors to block the DC voltage from
the speaker. During startup or shutdown, the DC bias
voltage is quickly raised or lowered (Figure 1), resulting
in an audible transient through the headphone load.
The MAX9890 prevents the audible transient by slowly
ramping the DC bias in an S-shaped waveform (Figure

2), suppressing the large transient at the output of the
coupling capacitor. The S-shaped waveform shapes
the frequency spectrum, minimizing the amount of
audible components present at the output.

Internal switches couple the inputs to the outputs after
the coupling capacitors have fully charged to the input
common-mode bias voltage. When power is removed or
the device is put into shutdown, the internal switches in
the MAX9890 immediately disconnect the output and
slowly discharge the coupling capacitors through
220kΩ resistors.

The MAX9890 has an undervoltage lockout (UVLO) that
prevents device operation when VCCis below the
power-down threshold (2.5V, typ). The MAX9890 fea­tures ±8kV ESD (Human Body Model) protection on the
audio outputs.

Startup

The MAX9890 monitors VCCand SHDN. The UVLO
holds the device off when VCCis below the power­down threshold (V

UVLO

) or SHDN is held low. The

device needs both VCCabove the power-down thresh-

old and SHDN = high for the part to start up. Once the
supply voltage is above the power-down threshold and
SHDN is high, the device charges the coupling capaci­tors to the input DC bias voltage using CEXT to control
the ramp. After the DC bias ramp, the internal switches
close, coupling the audio input to the output. The
MAX9890 provides click-pop suppression even if the
output blocking capacitors are already partially or fully
charged.

The MAX9890A features a 200ms switch turn-on time,
enabling the use of up to 100µF coupling capacitors at
the output for applications requiring only a limited low­frequency response and a rapid turn-on time. The
MAX9890B features a 330ms switch turn-on time,
enabling the use of >100µF coupling capacitors at the
output for extended low-frequency response applica­tions. For optional click-pop suppression, mute the
audio signal until after the turn-on time has elapsed.

The internal switches stay closed as long as VCCis
above the power-down threshold voltage and SHDN is
high. Figures 1 and 2 show typical startup/power-up
sequences with and without click-pop suppression.

Shutdown

If the supply voltage falls below the UVLO threshold or
if SHDN is driven low, the device enters low-power
shutdown mode. In low-power shutdown mode, quies­cent current reduces to 0.001µA. The switches are
immediately turned off and 220kΩ resistors slowly
bleed the charge off the coupling capacitors. Figures 3
and 4 show typical shutdown/power-down sequences
with and without click-pop suppression. For optimal
click-pop performance, mute the audio signal before
shutting down the MAX9890.

Audio Click-Pop Suppressor

6 _______________________________________________________________________________________

Pin Description

PIN/BUMP

NAME FUNCTION

1C2V

CC

Power Supply. VCC accepts 2.7V to 5.5V input supply. Bypass VCC to GND with a 1µF capacitor.

2C1SHDN

Active-Low Shutdown. Connect SHDN to GND to enter a 0.1µA shutdown mode. Connect SHDN
to V

CC

for normal operation.

3 B1 INL Left-Channel Audio Input. Connect to output of headphone amplifier.

4 A1 OUTL Left-Channel Audio Output. AC couple to headphone.

5 A2 GND Ground

6 A3 OUTR Right-Channel Audio Output. AC couple to headphone.

7 B3 INR Right-Channel Audio Input. Connect to output of headphone amplifier.

8 C3 CEXT External Capacitor. Connect a 0.1µF capacitor from CEXT to GND.

TDFN UCSP

Switches

The MAX9890’s internal switches connect the input to the
output after the coupling capacitors are fully charged.
The MAX9890A holds the switches open for 200ms and is
ideal for coupling capacitors less than 100µF. The
MAX9890B has a longer turn-on time of 330ms and is

ideal with larger coupling capacitors less than 220µF. The
internal switches have a low on-resistance (RON= 0.5Ω)
and on-resistance flatness (R

FLAT(ON)

= 2mΩ) minimizing
total harmonic distortion plus noise (THD+N). The rela­tionship below shows the contribution to THD+N through
the switch, due to on-resistance and on-resistance flat-

MAX9890

Audio Click-Pop Suppressor

_______________________________________________________________________________________ 7

40ms/div

FFT: 25Hz/div

V

OUT

1V/div

V

CC

/SHDN

2V/div

V

HEADPHONE

100mV/div

FFT

HEADPHONE

20dB/div

0dB

Figure 1. Startup/Power-Up Sequence Without Click-Pop
Suppression

40ms/div

FFT: 25Hz/div

V

OUT

1V/div

V

HEADPHONE

50mV/div

FFT

HEADPHONE

20dB/div

V

CC

/SHDN

2V/div

0dB

Figure 2. Startup/Power-Up Sequence With Click-Pop
Suppression

100ms/div

FFT: 25Hz/div

V

OUT

1V/div

V

HEADPHONE

500mV/div

VCC/SHDN
2V/div

FFT

HEADPHONE

20dB/div

0dB

Figure 3. Shutdown/Power-Down Sequence Without Click-Pop
Suppression

100ms/div

FFT: 25Hz/div

V

OUT

1V/div

V

HEADPHONE

20mV/div

FFT

HEADPHONE

20dB/div

V

CC

/SHDN

2V/div

0dB

Figure 4. Shutdown/Power-Down Sequence With Click-Pop
Suppression

MAX9890

ness (on-resistance flatness is defined as the difference
between the maximum and minimum values of on-resis­tance measured over the specific analog-signal range).

Power-Supply Rejection Ratio (PSRR)

PSRR is the measurement of AC power-supply ripple or
noise that couples to the output. Variations in supply volt­age corrupt the audio signal, due to changes in the R

ON

value by supply modulation. The FFT shown in Figure 5
was taken with a 19kHz 1V

P-P

sine wave onto the 5V DC

supply voltage, and a 20kHz 1V

P-P

sine wave applied at
IN_ with a 32Ω load is shown in Figure 6. The MAX9890
maintains a -100dB (typ) PSRR across the supply voltage
range eliminating any corruption of the audio signal from
supply variations. Therefore, with a zero audio signal, the
RONvariation due to supply voltage ripple does not con­tribute to any output signal modulation.

Low-Frequency Response

In addition to the cost and size disadvantages of the
output-coupling capacitors, these capacitors limit the
amplifier’s low-frequency response and can distort the
audio signal.

The impedance of a headphone or speaker load and
the output-coupling capacitor form a highpass filter with
the -3dB point set by:

where RLis the headphone impedance and C

OUT

is
the output-coupling capacitor value. The highpass filter
is required by conventional single-ended, single power­supply headphone drivers to block the midrail DC bias
component of the audio signal from the headphones.
The drawback to the filter is that it can attenuate low­frequency signals. Larger values of C

OUT

reduce this
effect but result in physically larger, more expensive
capacitors. Figure 7 shows the relationship between the
size of C

OUT

and the resulting low-frequency attenua­tion. Note that the -3dB point for a 16Ω headphone with
a 100µF blocking capacitor is 100Hz, well within the
normal audio band, resulting in low-frequency attenua­tion of the reproduced signal.

The MAX9890A and MAX9890B have different turn-on
times to accommodate different size output-coupling
capacitors (see Table 1). Using a capacitor smaller
than the specified maximum allowed does not degrade
click-pop suppression. Therefore, capacitors less than
100µF can be used with the A or B version devices.

f

RC

dB

L OUT

−=3

1

2π

THD

R

R

MAXIMUM

FLAT ON

LOAD

=×

()

%

4

100

Audio Click-Pop Suppressor

8 _______________________________________________________________________________________

-140

-70

-80

-90

-100

-110

-120

-130

-50

-60

-30

-40

-20

0

-10

10

15 17 19 21 23 25

VCC = 4.5V TO 5.5V, f

VCC

= 19kHz,

R

L

= 32Ω, VIN = 1V

P-P

, fIN = 20kHz

FREQUENCY (kHz)

OUTPUT SPECTRUM (dBV)

Figure 5. FFT for PSRR

RAMP

UP

VDC = 5V
V

AC

= 1V

P-P

19kHz

V

DC

= 2.0V

V

AC

= 1V

P-P

20kHz

SHDN

MAX9890

IN_

IN_

OUT_

R

L

OUT_

RAMP

DOWN

V

CC

Figure 6. PSRR Test Circuit

External Capacitor (C

CEXT

)

The external click-pop suppression capacitor at CEXT
serves a dual purpose. On power-up, C

CEXT

is
charged by an internal current source and is used to
slowly ramp up the external coupling capacitors. When
the device is powered down, C

CEXT

powers the internal
circuitry used to drain the external coupling capacitors.
A 0.1µF capacitor between CEXT and GND provides
clickless/popless operation with coupling capacitors for
both the MAX9890A and MAX9890B, even with the
rapid removal of supply voltage.

Applications Information

Layout

Good layout improves performance by decreasing the
amount of stray capacitance and noise. To decrease
stray capacitance, minimize PC board trace lengths
and resistor leads, and place external components as
close to the device as possible.

Power Supply and Bypassing

The excellent PSRR of the MAX9890 allows it to operate
from noisy power supplies. In most applications, a

0.1µF capacitor from VCCto GND is sufficient. This
bypass capacitor should be placed close to VCC.

UCSP Applications Information

For the latest application details on UCSP construction,
dimensions, tape-carrier information, printed circuit
board techniques, bump-pad layout, and recommend­ed reflow temperature profile, as well as the latest infor­mation on reliability testing results, refer to the
Application Note, “UCSP—A Wafer-Level Chip-Scale
Package” available on Maxim’s website at www.maxim­ic.com/ucsp.

Chip Information

TRANSISTOR COUNT: 1001

PROCESS: BiCMOS

MAX9890

Audio Click-Pop Suppressor

_______________________________________________________________________________________ 9

0

-30
10 100 1k 10k 100k

LOW-FREQUENCY ROLLOFF

(R

L

= 16Ω)

-24

-27

-12

-15

-18

-21

-6

-9

-3

FREQUENCY (Hz)

ATTENUATION (dB)

330μF

220μF

100μF

33μF

Figure 7. Low-Frequency Attenuation for Common DC-Blocking
Capacitor Values

CAPACITOR

SIZE (µF)

MAX9890A

TURN-ON TIME

(200ms)

MAX9890B

TURN-ON TIME

(300ms)

33 √√

47 √√
100 √√
150 * √
220 * √

330 — *

470 — *

Table 1. Coupling Capacitor

*May experience some degradation of click-pop suppression.

MAX9890

Audio Click-Pop Suppressor

10 ______________________________________________________________________________________

TDFN-EP

TOP VIEW

1

2

8

7

3

4

6

5

OUTR

GND

OUTL

CEXT

INR

SHDN

INL

V

CC

MAX9890

NOTE:

GND IS CONNECTED TO THE UNDERSIDE METAL SLUG.

SHDN

GND

V

CC

INL

OUTR

INR

OUTL

CEXT

UCSP

A

B

C

12 3

MAX9890

(BUMPS ON BOTTOM)

Pin Configurations

HPLOUT

HPROUT

STARTUP AND

SHUTDOWN

CONTROL

GND

SHDN

OUTL

OUTR

INL

INR

CEXT

V

CC

0.1μF

1μF

5

7

3

2

4

6

8

1

2.7V TO 5.5V

( ) UCSP BUMP.

*USER-DEFINED VALUE.

(C2)

(C3)

(A1)

(A3)

(A2)

(B3)

(B1)

(C1)

*

*

MAX9890

RAMP-UP AND

RAMP-DOWN

CONTROL

CODEC

WITH INTEGRATED

HEADPHONE

DRIVERS

Typical Application Circuit

MAX9890

Audio Click-Pop Suppressor

______________________________________________________________________________________ 11

Package Information

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages

.)

9LUCSP, 3x3.EPS

PACKAGE OUTLINE, 3x3 UCSP

1

21-0093

L

1

MAX9890

Audio Click-Pop Suppressor

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.

12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

© 2004 Maxim Integrated Products is a registered trademark of Maxim Integrated Products.

Package Information (continued)

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages

.)

6, 8, &10L, DFN THIN.EPS

COMMON DIMENSIONS
SYMBOL MIN. MAX.

A 0.70 0.80
D 2.90 3.10
E 2.90 3.10
A1

0.00 0.05

L 0.20 0.40

PKG. CODE N D2 E2 e JEDEC SPEC b

[(N/2)-1] x e

PACKAGE VARIATIONS

0.25 MIN.k

A2 0.20 REF.

2.00 REF0.25±0.050.50 BSC2.30±0.1010T1033-1

2.40 REF0.20±0.05- - - - 0.40 BSC1.70±0.10 2.30±0.1014T1433-1

1.50±0.10 MO229 / WEED-3

0.40 BSC - - - - 0.20±0.05 2.40 REFT1433-2 14 2.30±0.101.70±0.10

T633-2 6 1.50±0.10 2.30±0.10 0.95 BSC MO229 / WEEA 0.40±0.05 1.90 REF
T833-2 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF
T833-3 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF

2.30±0.10 MO229 / WEED-3 2.00 REF0.25±0.050.50 BSC1.50±0.1010T1033-2