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Audio Click-Pop Suppressor

Industry's First Integrated Audio Click-and-Pop Suppressor

Product Details

Key Features

Parametric specs for Click-Pop Suppressors
VSUPPLY (V) (min) 2.7
VSUPPLY (V) (max) 5.5
IQ (mA) (typ) 0.014
PSRR (dB) (min) 100
THD+N (%) 0.003
SHDN Yes
# Channels 2
Package/Pins TDFN/8
UCSP (B)/9
Budgetary
Price (See Notes)
0.74
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Simplified Block Diagram

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Parameters

Parametric specs for Click-Pop Suppressors
VSUPPLY (V) (min) 2.7
VSUPPLY (V) (max) 5.5
IQ (mA) (typ) 0.014
PSRR (dB) (min) 100
THD+N (%) 0.003
SHDN Yes
# Channels 2
Package/Pins TDFN/8
UCSP (B)/9
Budgetary
Price (See Notes)
0.74

Key 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)

Applications/Uses

  • Cell Phones
  • High-End Notebook Audio
  • PDAs
  • Portable DVD Players
  • Portable MP3 Players

Description

The MAX9890 provides click-and-pop suppression for devices such as CODECs with 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.

Simplified Block Diagram

MAX9890: Typical Application Circuit MAX9890: Typical Application Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .