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See Technical Specifications

MAX9725AETC+

Amplifier IC Headphones, 2-Channel (Stereo) Class AB 12-TQFN (4x4)

Manufacturer:

Analog Devices Inc.
Mfr.Part #:

MAX9725AETC+
Datasheet:

MAX9725AETC+ Datasheet (PDF)
Series:

MAX9725
Product:

Headphone Amplifiers
Class:

Class-AB
Output Power:

20 mW
EDA/CAD Models:

Request Free CAD Models for MAX9725AETC+

Email: [email protected]

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Tel: +852 95804164

MAX9725AETC+ General Description

The MAX9725A–MAX9725D fixed-gain, stereo headphone amplifiers are ideal for portable equipment where board space is at a premium. The MAX9725E offers the flexibility to adjust the gain with external input and feedback resistors. The MAX9725A–MAX9725E use a unique DirectDrive® architecture to produce a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors, saving cost, board space, and component height. Fixed gains of -2V/V (MAX9725A), -1.5V/V (MAX9725B), -1V/V (MAX9725C), and -4V/V (MAX9725D) further reduce external component count. The adjustable gain of the MAX9725E DirectDrive headphone amplifier allows for any gain down to -1V/V using external resistors.

Key Features

Low Quiescent Current:
- 2.1mA (MAX9725A–MAX9725D)
- 2.3mA (MAX9725E)
Single-Cell, 0.9V to 1.8V Single-Supply Operation
Fixed Gain Eliminates External Feedback Network
- MAX9725A: -2V/V
- MAX9725B: -1.5V/V
- MAX9725C: -1V/V
- MAX9725D: -4V/V
Adjustable Gain with External Input and FeedbackResistors
- MAX9725E: Minimum Stable Gain of -1V/V
Ground-Referenced Outputs Eliminate DC Bias
No Degradation of Low-Frequency Response Due to Output Capacitors
20mW per Channel into 32Ω
Low 0.006% THD+N
High PSRR (80dB at 1kHz)
Integrated Click-and-Pop Suppression
Low-Power Shutdown Control
Short-Circuit Protection
±8kV ESD-Protected Amplifier Outputs
Available in Space-Saving Packages
- 12-Bump UCSP (1.54mm x 2.02mm x 0.6mm)
- 12-Pin Thin QFN (4mm x 4mm x 0.8mm)

Application

Cell Phones
MP3 Players
PDAs
Portable Audio Equipment
Smartphones

Specifications

Product Category	Audio Amplifiers	Series	MAX9725
Product	Headphone Amplifiers	Class	Class-AB
Output Power	20 mW	Mounting Style	SMD/SMT
Type	2-Channel Headphone	Audio - Load Impedance	16 mOhms
THD plus Noise	0.006 %	Supply Voltage - Max	1.8 V
Supply Voltage - Min	900 mV	Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C	Number of Channels	2 Channel
Operating Supply Current	2.1 mA	Operating Supply Voltage	900 mV to 1.8 V
Pd - Power Dissipation	1.349 W	Product Type	Audio Amplifiers
PSRR - Power Supply Rejection Ratio	80 dB	Factory Pack Quantity	75
Subcategory	Audio ICs	Part # Aliases	MAX9725