MAX9890_V01 [MAXIM]
Audio Click-Pop Suppressor;
| 型号： | MAX9890_V01 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Audio Click-Pop Suppressor |
| 文件： | 总12页 (文件大小：1256K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
EVALUATION KIT AVAILABLE
MAX9890
Audio Click-Pop Suppressor
General Description
Features
● 36dB Click-Pop Suppression
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 ramp-
ing of the DC bias voltage on the output-coupling capaci-
tors 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.
● 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
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) pro-
tection circuitry on the outputs protect the MAX9890 and
devices further up the signal chain from ESD strikes up
to ±8kV.
● Tiny Packaging
• 9-Bump UCSP (1.5mm x 1.5mm x 0.6mm)
• 8-Pin TDFN (3mm x 3mm x 0.8mm)
Ordering Information
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.
PIN-
PACKAGE
TOP
MARK
PART
TEMP RANGE
MAX9890AEBL+T -40°C to +85°C 9 UCSP-9
MAX9890AETA -40°C to +85°C 8 TDFN-EP**
MAX9890BEBL+T -40°C to +85°C 9 UCSP-9
MAX9890BETA -40°C to +85°C 8 TDFN-EP**
ADV
AHA
ADW
AHB
BRQ
Applications
● High-End Notebook
● PDAs
● Cell Phones
MAX9890BETA/V+ -40°C to +85°C 8 TDFN-EP**
Audio
● Portable DVD Players
● Portable MP3 Players
**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.
Simplified Block Diagram
SINGLE SUPPLY
2.7V TO 5.5V
Selector Guide
SWITCH TURN-ON
TIME (ms)
PART
PIN-PACKAGE
OUTL
INL
MAX9890AEBL+T
MAX9890AETA
9 UCSP-9
8 TDFN-EP
9 UCSP-9
200
200
330
330
330
RAMP
UP
RAMP
DOWN
MAX9890BEBL+T
MAX9890BETA
8 TDFN-EP
8 TDFN-EP
MAX9890BETA/V+
INR
OUTR
Typical Application Circuit and Pin Configurations appear
at end of data sheet.
MAX9890
UCSP is a trademark of Maxim Integrated Products, Inc.
19-2932; Rev 4; 5/17
MAX9890
Audio Click-Pop Suppressor
Absolute Maximum Ratings
(All Voltages are Referenced to GND)
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)
V
........................................................................................+6V
CC
CEXT, SHDN, OUT_ ...............................................-0.3V to +6V
IN_............................................................ -0.3V to (V + 0.3V)
Continuous Current (IN_, OUT_) ...................................±150mA
CC
Continuous Current (All Other Pins).................................±20mA
Reflow..........................................................................+235°C
Continuous Power Dissipation (T = +70°C)
A
8-Pin TDFN (derate 24.4mW/°C above +70°C) ........1951mW
9-Bump UCSP (derate 4.7mW/°C above +70°C)........379mW
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
(V
= 3V, SHDN = V , GND = 0, C
= 0.1μF, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
CC
CC
CEXT
A
MIN
(Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
5.5
22
UNITS
V
Supply Voltage Range
Supply Current
V
Inferred from R
(Note 2)
test
2.7
CC
ON
I
14
µA
µA
V
CC
Shutdown Supply Current
Input Voltage Range
I
SHDN = GND
Inferred from R
0.001
1
SHDN
test
0
V
ON
CC
1
V
V
= 5.5V
0.4
0.7
Over input voltage
range
CC
On-Resistance
R
Ω
ON
= 2.7V
1.5
CC
On-Resistance Flatness
R
Over input voltage range
2
mΩ
kΩ
µA
FLAT(ON)
Output Discharge Resistance
Input Off-Leakage Current
R
220
0.001
OUT(DIS)
SHDN = GND
1
V
Power-Down Threshold
CC
V
V
falling
2.5
V
UVLO
CC
(Note 3)
Click-Pop Reduction
ESD Protection
DYNAMIC
36
dB
OUT_, Human Body Model
±8
kV
MAX9890A
MAX9890B
(Note 5)
200
330
Turn-On Time (Note 4)
t
ms
ON
Turn-Off Time
Bandwidth
t
120
ns
OFF
>100
kHz
Total Harmonic Distortion Plus
Noise
THD+N
R = 32Ω, 30mW, f = 1kHz
0.003
%
L
Off-Isolation, IN_ to OUT_
Crosstalk (Switches ON)
f = 20kHz, SHDN = GND, R = 32Ω
-108
-100
dB
dB
L
f = 20kHz
V
= 0.5V
at 20Hz, f = 3kHz at
RIPPLE
P-P IN
-100
-100
-84
1V , R = 32Ω
P-P
L
Power-Supply Rejection Ratio
(Note 6)
V
= 0.5V
at 1kHz, f = 3kHz at
RIPPLE
P-P IN
PSRR
dB
1V , R = 32Ω
P-P
L
V
= 0.5V
at 20kHz, f = 3kHz
RIPPLE
P-P IN
at 1V , R = 32Ω
P-P
L
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MAX9890
Audio Click-Pop Suppressor
Electrical Characteristics (continued)
(V
= 3V, SHDN = V , GND = 0, C
= 0.1μF, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
CC
CC
CEXT
A
MIN
MAX
A
(Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LOGIC INPUT (SHDN)
V
V
= 2.7V to 5.5V
= 2.7V to 5.5V,
2.0
2.2
CC
Logic-Input High Voltage
V
V
IH
CC
MAX9890BETA/V+ only, T = -40°C
A
Logic-Input Low Voltage
Logic-Input Current
V
V
= 2.7V to 5.5V
0.8
±1
V
IL
CC
I
µA
IN
Note 1: All devices are 100% tested at T = +25°C. All temperature limits are guaranteed by design.
A
Note 2: Supply current is measured when switch is on (i.e., SHDN = V , t > t ).
CC
ON
Note 3: Supply voltage level where the device enters its power-down cycle.
Note 4: Turn-on time is measured from the time V
Note 5: Switch turn-off time is measured from the time SHDN < V or V
Note 6: See the Power-Supply Rejection Ratio section for test method.
= 3V and SHDN > V until the RON specification is met.
CC
IH
< V until the off-isolation specification is met.
UVLO
IL
CC
Typical Operating Characteristics
(V
= 3V, C
= 0.1μF, typical values are at T = +25°C, unless otherwise noted.)
CC
CEXT
A
ON-RESISTANCE vs. IN_ VOLTAGE
SUPPLY CURRENT vs. TEMPERATURE
SHUTDOWN CURRENT vs. TEMPERATURE
0.8
40
35
30
25
20
15
10
5
1000
SHDN = 0V
900
0.7
0.6
0.5
0.4
0.3
0.2
800
700
600
500
400
V
CC
= 5.5V
V
CC
= 3V
V
CC
= 5.5V
300
200
100
0
V
CC
= 5V
V
CC
= 2.7V
V
CC
= 2.7V
0
0
1
2
3
4
5
-40
-15
10
35
60
85
-40
-15
10
35
60
85
IN_ VOLTAGE (V)
TEMPERATURE (°C)
TEMPERATURE (°C)
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MAX9890
Audio Click-Pop Suppressor
Typical Operating Characteristics (continued)
(V
= 3V, C
= 0.1μF, typical values are at T = +25°C, unless otherwise noted.)
CC
CEXT A
ON-LOSS vs. FREQUENCY
PHASE SHIFT vs. FREQUENCY
OFF-ISOLATION vs. FREQUENCY
1.0
2
1
10
0.8
0.6
0.4
0.2
0
-10
-30
-50
-70
R = 32Ω
L
0
R = 16Ω
L
-1
-2
-3
-4
-5
R = 32Ω
L
R
L
= 32Ω
-0.2
-0.4
-0.6
-0.8
-1.0
-90
-110
-130
-150
R = 16Ω
L
R
L
= 16Ω
1k
10k
100k
10
100
1k
10k
100k
10
100
10
100
1k
FREQUENCY (Hz)
10k
100k
FREQUENCY (Hz)
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
CROSSTALK vs. FREQUENCY
-50
-60
100
10
100
10
V
= 5V
CC
V
= 5V
CC
R = 32Ω
f = 1kHz
L
R = 16Ω
f = 1kHz
L
-70
-80
1
1
-90
-100
-110
-120
-130
-140
-150
0.1
0.1
0.01
0.001
0.0001
0.01
0.001
0.0001
10
100
1k
10k
100k
0
20 40 60 80 100 120 140 160
OUTPUT POWER (mW)
0
25 50 75 100 125 150 175 200 225 250
OUTPUT POWER (mW)
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
100
10
100
10
1
0.1
V
= 5V
V
= 3V
V
= 3V
CC
CC
CC
R = 16Ω
R = 16Ω
f = 1kHz
R = 32Ω
f = 1kHz
L
L
L
1
1
0.1
0.1
0.01
OUTPUT POWER = 150mW
OUTPUT POWER = 25mW
0.01
0.001
0.01
0.001
0.0001
0.001
0.0001
0.0001
0
25
50
75
100
125
150
0
10 20 30 40 50 60 70 80
OUTPUT POWER (mW)
10
100
1k
10k
100k
OUTPUT POWER (mW)
FREQUENCY (Hz)
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MAX9890
Audio Click-Pop Suppressor
Typical Operating Characteristics (continued)
(V
= 3V, C
= 0.1μF, typical values are at T = +25°C, unless otherwise noted.)
CC
CEXT A
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
1
1
0.1
1
V
= 5V
V
= 3V
V
= 3V
CC
CC
CC
R = 32Ω
R = 16Ω
R = 32Ω
L
L
L
0.1
0.01
0.1
0.01
OUTPUT POWER = 60mW
OUTPUT POWER = 20mW
0.01
OUTPUT POWER = 70mW
OUTPUT POWER = 20mW
OUTPUT POWER = 30mW
OUTPUT POWER = 15mW
0.001
0.001
0.0001
0.001
0.0001
0.0001
10
100
1k
10k
100k
10
100
1k
10k
100k
10
100
1k
10k
100k
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
STARTUP WAVEFORM (DC)
SHUTDOWN WAVEFORM (DC)
MAX9890 toc16
MAX9890 toc17
SHDN
2V/div
SHDN
2V/div
V
OUT
1V/div
V
OUT
1V/div
V
HEADPHONE
V
HEADPHONE
10mV/div
10mV/div
40ms/div
10s/div
STARTUP WAVEFORM (AC)
SHUTDOWN WAVEFORM (AC)
MAX9890 toc18
MAX9890 toc19
SHDN
2V/div
SHDN
2V/div
V
OUT
1V/div
V
OUT
1V/div
V
HEADPHONE
V
HEADPHONE
1V/div
1V/div
40ms/div
1s/div
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MAX9890
Audio Click-Pop Suppressor
Pin Description
PIN/BUMP
NAME
FUNCTION
accepts 2.7V to 5.5V input supply. Bypass VCC to GND with a 1µF capacitor.
TDFN
UCSP
1
C2
V
Power Supply. V
CC
CC
Active-Low Shutdown. Connect SHDN to GND to enter a 0.1µA shutdown mode. Connect SHDN
to V for normal operation.
2
C1
SHDN
CC
3
4
5
6
7
8
B1
A1
A2
A3
B3
C3
INL
Left-Channel Audio Input. Connect to output of headphone amplifier.
Left-Channel Audio Output. AC couple to headphone.
Ground
OUTL
GND
OUTR Right-Channel Audio Output. AC couple to headphone.
INR
Right-Channel Audio Input. Connect to output of headphone amplifier.
External Capacitor. Connect a 0.1µF capacitor from CEXT to GND.
CEXT
V
above the power-down threshold and SHDN = high
CC
Detailed Description
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 volt-
age 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 suppres-
sion even if the output blocking capacitors are already
partially or fully charged.
The MAX9890 provides click-and-pop suppression for
single-supply devices such as CODECs and other head-
phone amplifiers that do not have click-and-pop suppres-
sion. Single-supply audio amplifier outputs have a DC
bias voltage, V
/ 2, and require large output-coupling
CC
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.
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 lim-
ited 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.
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 internal switches stay closed as long as V
is above
CC
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.
The MAX9890 has an undervoltage lockout (UVLO)
Shutdown
that prevents device operation when V
is below the
CC
If the supply voltage falls below the UVLO threshold or
if SHDN is driven low, the device enters low-power shut-
down mode. In low-power shutdown mode, quiescent cur-
rent 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 typi-
cal shutdown/power-down sequences with and without
click-pop suppression. For optimal click-pop performance,
mute the audio signal before shutting down the MAX9890.
power-down threshold (2.5V, typ). The MAX9890 features
±8kV ESD (Human Body Model) protection on the audio
outputs.
Startup
The MAX9890 monitors V
and SHDN. The UVLO holds
CC
the device off when V
is below the power-down thresh-
CC
old (V
) or SHDN is held low. The device needs both
UVLO
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MAX9890
Audio Click-Pop Suppressor
V
/SHDN
CC
V /SHDN
CC
2V/div
2V/div
V
OUT
1V/div
0dB
0dB
V
OUT
1V/div
V
V
HEADPHONE
HEADPHONE
100mV/div
50mV/div
FFT
FFT
HEADPHONE
HEADPHONE
20dB/div
20dB/div
40ms/div
40ms/div
FFT: 25Hz/div
FFT: 25Hz/div
Figure 1. Startup/Power-Up Sequence Without Click-Pop
Suppression
Figure 2. Startup/Power-Up Sequence With Click-Pop
Suppression
V
/SHDN
CC
2V/div
V
/SHDN
CC
2V/div
0dB
0dB
V
OUT
V
OUT
1V/div
1V/div
V
HEADPHONE
V
HEADPHONE
500mV/div
20mV/div
FFT
20dB/div
HEADPHONE
FFT
20dB/div
HEADPHONE
100ms/div
100ms/div
FFT: 25Hz/div
FFT: 25Hz/div
Figure 3. Shutdown/Power-Down Sequence Without Click-Pop
Suppression
Figure 4. Shutdown/Power-Down Sequence With Click-Pop
Suppression
ideal with larger coupling capacitors less than 220μF. The
Switches
internal switches have a low on-resistance (R
= 0.5Ω)
ON
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
and on-resistance flatness (R
= 2mΩ) minimizing
FLAT(ON)
total harmonic distortion plus noise (THD+N). The rela-
tionship below shows the contribution to THD+N through
the switch, due to on-resistance and on-resistance flat-
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MAX9890
Audio Click-Pop Suppressor
V
= 4.5V TO 5.5V, f
= 19kHz,
VCC
CC
V
V
= 5V
= 1V
DC
R = 32Ω, V = 1V , f = 20kHz
L
IN
P-P IN
AC
P-P
V
CC
10
0
-10
SHDN
OUT_
19kHz
IN_
-20
-30
-40
-50
-60
-70
-80
V
V
= 2.0V
DC
R
L
= 1V
AC
P-P
20kHz
RAMP
UP
RAMP
DOWN
-90
-100
-110
-120
-130
-140
IN_
OUT_
MAX9890
15
17
19
21
23
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-resis-
tance 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:
R
1
FLAT(ON)
f_
=
THD
=
×100%
3dB
MAXIMUM
2πR C
4R
L
OUT
LOAD
where R is the headphone impedance and C
is
L
OUT
Power-Supply Rejection Ratio (PSRR)
PSRR is the measurement of AC power-supply ripple or
noise that couples to the output. Variations in supply volt-
age corrupt the audio signal, due to changes in the R
the output-coupling capacitor value. The highpass filter
is required by conventional single-ended, single power-
supply 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 low-
ON
value by supply modulation. The FFT shown in Figure 5
was taken with a 19kHz 1V sine wave onto the 5V DC
P-P
frequency signals. Larger values of C
reduce this
OUT
supply voltage, and a 20kHz 1V
sine wave applied at
P-P
effect but result in physically larger, more expensive
capacitors. Figure 7 shows the relationship between the
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
size of C
and the resulting low-frequency attenua-
OUT
tion. 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.
R
variation due to supply voltage ripple does not con-
ON
tribute to any output signal modulation.
Low-Frequency Response
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.
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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MAX9890
Audio Click-Pop Suppressor
Table 1. Coupling Capacitor
LOW-FREQUENCY ROLLOFF
MAX9890A
TURN-ON TIME
(200ms)
MAX9890B
TURN-ON TIME
(300ms)
CAPACITOR
SIZE (µF)
(R = 16Ω)
L
0
-3
33
√
√
√
√
√
√
√
*
-6
-9
330mF
47
220mF
100mF
-12
100
150
220
330
470
√
-15
-18
*
*
33mF
-21
-24
—
—
*
-27
-30
*May experience some degradation of click-pop suppression.
10
100
1k
10k
100k
FREQUENCY (Hz)
Figure 7. Low-Frequency Attenuation for Common DC-Blocking
Capacitor Values
External Capacitor (C
)
UCSP Applications Information
CEXT
The external click-pop suppression capacitor at CEXT
serves a dual purpose. On power-up, C is charged
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.
CEXT
by an internal current source and is used to slowly ramp
up the external coupling capacitors. When the device
is powered down, C
powers the internal circuitry
CEXT
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.
Chip Information
PROCESS: BiCMOS
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 resis-
tor 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 V
to GND is sufficient. This bypass
CC
capacitor should be placed close to V
.
CC
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MAX9890
Audio Click-Pop Suppressor
Pin Configurations
(BUMPS ON BOTTOM)
1
2
3
TOP VIEW
MAX9890
A
1
2
3
4
8
7
6
5
CEXT
INR
GND
V
CC
OUTL
INL
OUTR
INR
SHDN
INL
OUTR
GND
MAX9890
B
C
OUTL
TDFN-EP
V
CC
CEXT
SHDN
NOTE: GND IS CONNECTED TO THE UNDERSIDE METAL SLUG.
UCSP
Typical Application Circuit
2.7V TO 5.5V
1 (C2)
1µF
V
CC
CEXT
8 (C3)
0.1µF
RAMP-UP AND
RAMP-DOWN
CONTROL
STARTUP AND
SHUTDOWN
CONTROL
2 (C1) SHDN
*
*
3(B1) INL
OUTL
4 (A1)
HPLOUT
CODEC
WITH INTEGRATED
HEADPHONE
DRIVERS
7(B3) INR
OUTR
6 (A3)
HPROUT
MAX9890
GND
5 (A2)
( ) UCSP BUMP.
*USER-DEFINED VALUE.
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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
UCSP
PACKAGE CODE
B9+2
OUTLINE NO.
21-0093
LAND PATTERN NO.
Refer to Application Note 1891
90-0059
TDFN-EP
T833+2
21-0137
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MAX9890
Audio Click-Pop Suppressor
Revision History
REVISION REVISION
PAGES
CHANGED
DESCRIPTION
NUMBER
DATE
Added the MAX9890BETA/V+ to the Ordering Information, Selector Guide, and
Electrical Characteristics tables
3
3/14
1, 3
Updated MAX9890AEBL-T, MAX9890BEBL-T to MAX9890AEBL+T, MAX9890BEBL+T
in the Ordering Information and Selector Guide tables
4
5/17
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.
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