EVALUATION KIT AVAILABLE
MAX9890
Audio Click-Pop Suppressor
General Description
The MAX9890 provides click-and-pop suppression for
devices such as CODECs with test integrated headphone
amplifiers that lack a clickless/popless startup/power-up
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 x 1.5mm
x 0.6mm) 9-bump chip-scale package (UCSP™), as well
as an 8-pin TDFN package (3mm x 3mm x 0.8mm), and is
specified for operation over the -40°C to +85°C extended
temperature range.
Applications
●● High-End Notebook
Audio
●● Portable DVD Players
●● Portable MP3 Players
●● PDAs
●● Cell Phones
Simplified Block Diagram
SINGLE SUPPLY
2.7V TO 5.5V
●● 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)
Ordering Information
PART
INR
TOP
MARK
-40°C to +85°C 9 UCSP-9
ADV
MAX9890AETA
-40°C to +85°C 8 TDFN-EP**
AHA
MAX9890BEBL+T
-40°C to +85°C 9 UCSP-9
ADW
MAX9890BETA
-40°C to +85°C 8 TDFN-EP**
AHB
MAX9890BETA/V+
-40°C to +85°C 8 TDFN-EP**
BRQ
**EP = Exposed pad.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
/V denotes an automotive qualified part that conforms to
AEC-Q100.
PART
MAX9890AETA
RAMP
DOWN
MAX9890BEBL+T
OUTR
MAX9890
UCSP is a trademark of Maxim Integrated Products, Inc.
19-2932; Rev 4; 5/17
PINPACKAGE
MAX9890AEBL+T
MAX9890AEBL+T
RAMP
UP
TEMP RANGE
Selector Guide
OUTL
INL
Features
PIN-PACKAGE
SWITCH TURN-ON
TIME (ms)
9 UCSP-9
200
8 TDFN-EP
200
9 UCSP-9
330
MAX9890BETA
8 TDFN-EP
330
MAX9890BETA/V+
8 TDFN-EP
330
Typical Application Circuit and Pin Configurations appear
at end of data sheet.
MAX9890
Audio Click-Pop Suppressor
Absolute Maximum Ratings
(All Voltages are Referenced to GND)
VCC.........................................................................................+6V
CEXT, SHDN, OUT_................................................-0.3V to +6V
IN_............................................................. -0.3V to (VCC + 0.3V)
Continuous Current (IN_, OUT_)....................................±150mA
Continuous Current (All Other Pins).................................±20mA
Continuous Power Dissipation (TA = +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
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.
Electrical Characteristics
(VCC = 3V, SHDN = VCC, GND = 0, CCEXT = 0.1μF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
(Note 1)
PARAMETER
SYMBOL
CONDITIONS
Supply Voltage Range
VCC
Inferred from RON test
Supply Current
ICC
(Note 2)
Shutdown Supply Current
ISHDN
Input Voltage Range
On-Resistance
14
SHDN = GND
Over input voltage
range
0.001
0
µA
1
µA
VCC
V
VCC = 2.7V
0.7
1.5
ROUT(DIS)
2
VCC falling
0.001
Ω
mΩ
220
SHDN = GND
VUVLO
V
22
1
Output Discharge Resistance
UNITS
5.5
0.4
RFLAT(ON) Over input voltage range
VCC Power-Down Threshold
(Note 3)
MAX
VCC = 5.5V
On-Resistance Flatness
Input Off-Leakage Current
TYP
2.7
Inferred from RON test
RON
MIN
kΩ
1
µA
2.5
V
36
dB
OUT_, Human Body Model
±8
kV
MAX9890A
200
MAX9890B
330
(Note 5)
120
ns
>100
kHz
RL = 32Ω, 30mW, f = 1kHz
0.003
%
Off-Isolation, IN_ to OUT_
f = 20kHz, SHDN = GND, RL = 32Ω
-108
dB
Crosstalk (Switches ON)
f = 20kHz
-100
dB
VRIPPLE = 0.5VP-P at 20Hz, fIN = 3kHz at
1VP-P, RL = 32Ω
-100
VRIPPLE = 0.5VP-P at 1kHz, fIN = 3kHz at
1VP-P, RL = 32Ω
-100
VRIPPLE = 0.5VP-P at 20kHz, fIN = 3kHz
at 1VP-P, RL = 32Ω
-84
Click-Pop Reduction
ESD Protection
DYNAMIC
Turn-On Time (Note 4)
tON
Turn-Off Time
tOFF
Bandwidth
Total Harmonic Distortion Plus
Noise
Power-Supply Rejection Ratio
(Note 6)
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THD+N
PSRR
ms
dB
Maxim Integrated │ 2
MAX9890
Audio Click-Pop Suppressor
Electrical Characteristics (continued)
(VCC = 3V, SHDN = VCC, GND = 0, CCEXT = 0.1μF, TA = TMIN to TMAX, 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
VIH
Logic-Input Low Voltage
VIL
Logic-Input Current
IIN
Note
Note
Note
Note
Note
Note
VCC = 2.7V to 5.5V
2.0
VCC = 2.7V to 5.5V,
MAX9890BETA/V+ only, TA = -40°C
2.2
V
VCC = 2.7V to 5.5V
0.8
V
±1
µA
1: All devices are 100% tested at TA = +25°C. All temperature limits are guaranteed by design.
2: Supply current is measured when switch is on (i.e., SHDN = VCC, t > tON).
3: Supply voltage level where the device enters its power-down cycle.
4: Turn-on time is measured from the time VCC = 3V and SHDN > VIH until the RON specification is met.
5: Switch turn-off time is measured from the time SHDN < VIL or VCC < VUVLO until the off-isolation specification is met.
6: See the Power-Supply Rejection Ratio section for test method.
Typical Operating Characteristics
(VCC = 3V, CCEXT = 0.1μF, typical values are at TA = +25°C, unless otherwise noted.)
VCC = 3V
0.5
0.4
VCC = 5V
0.3
25
20
15
10
VCC = 2.7V
5
0
1
2
3
IN_ VOLTAGE (V)
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4
5
0
-40
-15
10
900
SHUTDOWN CURRENT vs. TEMPERATURE
MAX9890 toc03
VCC = 5.5V
30
1000
SHUTDOWN CURRENT (pA)
MAX9890 toc01
0.6
SUPPLY CURRENT vs. TEMPERATURE
35
SUPPLY CURRENT (µA)
ON-RESISTANCE (Ω)
0.7
0.2
40
MAX9890 toc02
ON-RESISTANCE vs. IN_ VOLTAGE
0.8
SHDN = 0V
800
700
600
500
400
VCC = 5.5V
300
200
VCC = 2.7V
100
35
TEMPERATURE (°C)
60
85
0
-40
-15
10
35
60
85
TEMPERATURE (°C)
Maxim Integrated │ 3
MAX9890
Audio Click-Pop Suppressor
Typical Operating Characteristics (continued)
(VCC = 3V, CCEXT = 0.1μF, typical values are at TA = +25°C, unless otherwise noted.)
0.4
0.2
RL = 32Ω
0
-0.2
-0.4
RL = 16Ω
-0.6
10
100
1k
10k
-3
-50
-70
RL = 32Ω
-90
-110
RL = 16Ω
-130
10
1k
100
10k
-150
100k
10
100
1k
10k
100k
FREQUENCY (Hz)
CROSSTALK vs. FREQUENCY
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
THD+N (%)
-100
-110
-120
-130
-140
10
100
1k
10k
100k
1
0.1
1
0.1
0.01
0.01
0.001
0.001
0.0001
0
25 50 75 100 125 150 175 200 225 250
VCC = 5V
RL = 32Ω
f = 1kHz
10
THD+N (%)
-80
-90
VCC = 5V
RL = 16Ω
f = 1kHz
10
100
MAX9890 toc08
100
MAX9890toc09
FREQUENCY (Hz)
-70
0.0001
0
20
40
60
80
100 120 140 160
OUTPUT POWER (mW)
OUTPUT POWER (mW)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
10
THD+N (%)
1
0.1
VCC = 3V
RL = 32Ω
f = 1kHz
0.1
0.01
0.001
0.001
VCC = 5V
RL = 16Ω
0.1
1
0.01
1
THD+N (%)
VCC = 3V
RL = 16Ω
f = 1kHz
10
100
MAX9890toc10
100
MAX9890toc12
FREQUENCY (Hz)
MAX9890toc11
CROSSTALK (dB)
-2
-30
FREQUENCY (Hz)
-60
THD+N (%)
RL = 16Ω
-1
-5
100k
MAX9890 toc07
-50
-150
0
-10
-4
-0.8
-1.0
RL = 32Ω
MAX9890 toc06
1
PHASE SHIFT (DEGREES)
ON-LOSS (dB)
0.6
OFF-ISOLATION vs. FREQUENCY
10
OFF-ISOLATION (dB)
MAX9890 toc04
0.8
PHASE SHIFT vs. FREQUENCY
2
MAX9890 toc05
ON-LOSS vs. FREQUENCY
1.0
0.01
OUTPUT POWER = 150mW
0.001
0.0001
0
25
50
75
100
OUTPUT POWER (mW)
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125
150
0.0001
OUTPUT POWER = 25mW
0
10
20
30
40
50
60
OUTPUT POWER (mW)
70
80
0.0001
10
100
1k
10k
100k
FREQUENCY (Hz)
Maxim Integrated │ 4
MAX9890
Audio Click-Pop Suppressor
Typical Operating Characteristics (continued)
(VCC = 3V, CCEXT = 0.1μF, typical values are at TA = +25°C, unless otherwise noted.)
OUTPUT POWER = 70mW
0.001
OUTPUT POWER = 60mW
0.01
0.001
100
1k
0.01
OUTPUT POWER = 30mW
0.001
OUTPUT POWER = 15mW
OUTPUT POWER = 20mW
OUTPUT POWER = 20mW
10
VCC = 3V
RL = 32Ω
0.1
THD+N (%)
0.01
0.0001
1
0.1
THD+N (%)
THD+N (%)
0.1
VCC = 3V
RL = 16Ω
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
10k
100k
0.0001
MAX9890toc14
VCC = 5V
RL = 32Ω
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9890toc14
1
MAX9890toc13
1
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
10
FREQUENCY (Hz)
100
1k
10k
100k
0.0001
10
100
FREQUENCY (Hz)
1k
10k
100k
FREQUENCY (Hz)
SHUTDOWN WAVEFORM (DC)
STARTUP WAVEFORM (DC)
MAX9890 toc17
MAX9890 toc16
SHDN
2V/div
SHDN
2V/div
VOUT
1V/div
VOUT
1V/div
VHEADPHONE
10mV/div
40ms/div
VHEADPHONE
10mV/div
10s/div
SHUTDOWN WAVEFORM (AC)
STARTUP WAVEFORM (AC)
MAX9890 toc18
MAX9890 toc19
SHDN
2V/div
SHDN
2V/div
VOUT
1V/div
VOUT
1V/div
VHEADPHONE
1V/div
40ms/div
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VHEADPHONE
1V/div
1s/div
Maxim Integrated │ 5
MAX9890
Audio Click-Pop Suppressor
Pin Description
PIN/BUMP
NAME
FUNCTION
C2
VCC
Power Supply. VCC accepts 2.7V to 5.5V input supply. Bypass VCC to GND with a 1µF capacitor.
2
C1
SHDN
Active-Low Shutdown. Connect SHDN to GND to enter a 0.1µA shutdown mode. Connect SHDN
to VCC for normal operation.
3
B1
INL
4
A1
OUTL
Left-Channel Audio Output. AC couple to headphone.
5
A2
GND
Ground
6
A3
OUTR
TDFN
UCSP
1
7
B3
INR
8
C3
CEXT
Left-Channel Audio Input. Connect to output of headphone amplifier.
Right-Channel Audio Output. AC couple to headphone.
Right-Channel Audio Input. Connect to output of headphone amplifier.
External Capacitor. Connect a 0.1µF capacitor from CEXT to GND.
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, VCC / 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 VCC is 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 VCC and SHDN. The UVLO holds
the device off when VCC is below the power-down threshold (VUVLO) or SHDN is held low. The device needs both
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VCC above the power-down threshold 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 low-frequency 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 VCC is 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.
Maxim Integrated │ 6
MAX9890
Audio Click-Pop Suppressor
VCC/SHDN
2V/div
VOUT
1V/div
0dB
VCC/SHDN
2V/div
0dB
VOUT
1V/div
VHEADPHONE
100mV/div
VHEADPHONE
50mV/div
FFTHEADPHONE
20dB/div
FFTHEADPHONE
20dB/div
40ms/div
FFT: 25Hz/div
40ms/div
FFT: 25Hz/div
Figure 1. Startup/Power-Up Sequence Without Click-Pop
Suppression
Figure 2. Startup/Power-Up Sequence With Click-Pop
Suppression
VCC/SHDN
2V/div
VCC/SHDN
2V/div
0dB
VOUT
1V/div
0dB
VOUT
1V/div
VHEADPHONE
500mV/div
VHEADPHONE
20mV/div
FFTHEADPHONE
20dB/div
100ms/div
FFT: 25Hz/div
FFTHEADPHONE
20dB/div
100ms/div
FFT: 25Hz/div
Figure 3. Shutdown/Power-Down Sequence Without Click-Pop
Suppression
Figure 4. Shutdown/Power-Down Sequence With Click-Pop
Suppression
Switches
ideal with larger coupling capacitors less than 220μF. The
internal switches have a low on-resistance (RON = 0.5Ω)
and on-resistance flatness (RFLAT(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-
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
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Maxim Integrated │ 7
OUTPUT SPECTRUM (dBV)
MAX9890
10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
Audio Click-Pop Suppressor
VCC = 4.5V TO 5.5V, fVCC = 19kHz,
RL = 32Ω, VIN = 1VP-P, fIN = 20kHz
VDC = 5V
VAC = 1VP-P
19kHz
VCC
SHDN
OUT_
IN_
VDC = 2.0V
VAC = 1VP-P
20kHz
RL
RAMP
UP
RAMP
DOWN
IN_
15
17
19
21
23
OUT_
MAX9890
25
FREQUENCY (kHz)
Figure 5. FFT for PSRR
Figure 6. PSRR Test Circuit
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).
The impedance of a headphone or speaker load and the
output-coupling capacitor form a highpass filter with the
-3dB point set by:
THD=
MAXIMUM
R FLAT(ON)
4R LOAD
× 100%
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 RON
value by supply modulation. The FFT shown in Figure 5
was taken with a 19kHz 1VP-P sine wave onto the 5V DC
supply voltage, and a 20kHz 1VP-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
RON variation 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.
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f _ 3dB =
1
2πR LC OUT
where RL is the headphone impedance and COUT 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 COUT reduce this
effect but result in physically larger, more expensive
capacitors. Figure 7 shows the relationship between the
size of COUT 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 clickpop suppression. Therefore, capacitors less than 100μF
can be used with the A or B version devices.
Maxim Integrated │ 8
MAX9890
Audio Click-Pop Suppressor
Table 1. Coupling Capacitor
LOW-FREQUENCY ROLLOFF
(RL = 16Ω)
0
-3
ATTENUATION (dB)
-6
330mF
-9
220mF
-12
100mF
-15
-18
33mF
-21
-24
-27
-30
10
100
1k
10k
100k
CAPACITOR
SIZE (µF)
MAX9890A
TURN-ON TIME
(200ms)
MAX9890B
TURN-ON TIME
(300ms)
33
√
√
47
√
√
100
√
√
150
*
√
220
*
√
330
—
*
470
—
*
*May experience some degradation of click-pop suppression.
FREQUENCY (Hz)
Figure 7. Low-Frequency Attenuation for Common DC-Blocking
Capacitor Values
External Capacitor (CCEXT)
The external click-pop suppression capacitor at CEXT
serves a dual purpose. On power-up, CCEXT is charged
by an internal current source and is used to slowly ramp
up the external coupling capacitors. When the device
is powered down, CCEXT 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
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 Application Note 1891:
Wafer-Level Packaging (WLP) and its Applications at
www.maximintegrated.com/UCSP.
Chip Information
PROCESS: BiCMOS
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 VCC to GND is sufficient. This bypass
capacitor should be placed close to VCC.
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Maxim Integrated │ 9
MAX9890
Audio Click-Pop Suppressor
Pin Configurations
(BUMPS ON BOTTOM)
TOP VIEW
1
2
3
OUTL
GND
OUTR
MAX9890
VCC 1
A
8 CEXT
SHDN 2
7 INR
6 OUTR
INL 3
B
5 GND
OUTL 4
MAX9890
INL
INR
TDFN-EP
C
NOTE: GND IS CONNECTED TO THE UNDERSIDE METAL SLUG.
SHDN
VCC
CEXT
UCSP
Typical Application Circuit
2.7V TO 5.5V
1 (C2)
1µF
VCC
2 (C1) SHDN
HPLOUT
3 (B1)
CEXT
8 (C3)
0.1µF
RAMP-UP AND
RAMP-DOWN
CONTROL
STARTUP AND
SHUTDOWN
CONTROL
INL
OUTL
4 (A1)
*
CODEC
WITH INTEGRATED
HEADPHONE
DRIVERS
HPROUT
7 (B3) INR
OUTR
6 (A3)
*
MAX9890
GND
5 (A2)
www.maximintegrated.com
( ) UCSP BUMP.
*USER-DEFINED VALUE.
Maxim Integrated │ 10
MAX9890
Audio Click-Pop Suppressor
Package Information
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
PACKAGE TYPE
PACKAGE CODE
OUTLINE NO.
LAND PATTERN NO.
UCSP
B9+2
21-0093
Refer to Application Note 1891
TDFN-EP
T833+2
21-0137
90-0059
www.maximintegrated.com
Maxim Integrated │ 11
MAX9890
Audio Click-Pop Suppressor
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
3
3/14
Added the MAX9890BETA/V+ to the Ordering Information, Selector Guide, and
Electrical Characteristics tables
4
5/17
Updated MAX9890AEBL-T, MAX9890BEBL-T to MAX9890AEBL+T, MAX9890BEBL+T
in the Ordering Information and Selector Guide tables
DESCRIPTION
1, 3
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
© 2017 Maxim Integrated Products, Inc. │ 12
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