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
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