Date: 21st Nov 09
DirectDrive headphone amplifier
IC from Maxim for portable multimedia devices
Maxim has introduces the MAX9820, a new stereo headphone
amplifier IC that employs Maxim's patented DirectDrive architecture
to eliminate clicks and pops, and the large output-coupling
capacitors required by conventional single-supply headphone
amplifiers. The MAX9820 also suppresses RF radiation, thus
preventing the amplifier from demodulating the coupled noise.
This low-cost, compact solution is suitable for portable
multimedia devices such as cell phones, portable media players,
PDAs, notebooks, mobile internet devices (MIDs), and other
audio applications.
The key features of the MAX9820 IC are,
High RF Noise Rejection
Windows Vista Premium Mobile Compliant
2.7V to 5.5V Single-Supply Operation
95mW Output Power (32Ohm, VDD = 5V)
Low-Current Shutdown Mode, < 1µA
Low 3mA (VDD = 3.3V) Quiescent Current
The MAX9820 also integrates undervoltage lockout and protection
against thermal overload and short-circuit events.
Operating temperature range: -40°C to +85°C
Package: 3mm x 3mm x 0.8mm, 10-pin TDFN package
Price: Starts at $0.44 for 1k pieces
Availability: An evaluation kit is available to speed designs
For more details visit www.maxim-ic.com
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