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See Technical Specifications

MAX9722BEUE+T +BOM

Amplifier IC Headphones, 2-Channel (Stereo) Class AB 16-TSSOP

Manufacturer:

Analog Devices Inc.
Mfr.Part #:

MAX9722BEUE+T
Datasheet:

MAX9722BEUE+T Datasheet (PDF)
Series:

MAX9722
Product:

Headphone Amplifiers
Class:

Class-AB
Output Power:

130 mW

Email: [email protected]

Skype: live:.cid.ab6b29428937b76

Tel: +852 95804164

MAX9722BEUE+T General Description

The MAX9722A/MAX9722B stereo headphone amplifiers are designed for portable equipment where board space is at a premium. The MAX9722A/MAX9722B use aunique DirectDrive® architecture to produce a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors, which saves cost, board space, and component height. Additionally, the gain of the amplifier is set internally (-2V/V, MAX9722B) or adjusted externally (MAX9722A). The MAX9722A/MAX9722B deliver up to 70mW per channel into a 16Ω load or 130mW into a 32Ω load and have low 0.009% THD+N. An 80dB at 217Hz power-supply rejection ratio (PSRR) allows these devices to operate from noisy digital supplies without an additional linear regulator. The MAX9722A/MAX9722B include ±8kV ESD protection on the headphone outputs. Comprehensive anticlick-and-pop circuitry suppresses audible clicks and pops on startup and shutdown. A low-power shutdown mode reduces the supply current to 0.1µA.

Key Features

2.4V to 5.5V Single-Supply Operation
High PSRR (80dB at 217Hz) Eliminates LDO
No Bulky DC-Blocking Capacitors Required
Ground-Referenced Outputs Eliminate DC Bias Voltage on Headphone Ground Pin
No Degradation of Low-Frequency Response Due to Output Capacitors
Differential Inputs for Enhanced Noise Cancellation
Adjustable Gain (MAX9722A) or Fixed -2V/V Gain (MAX9722B)
130mW per Channel into 32Ω
Low 0.009% THD+N
Integrated Click-and-Pop Suppression
Low Quiescent Current (5.5mA)
Short-Circuit and Thermal-Overload Protection
±8kV ESD-Protected Amplifier Outputs (Human Body Model)
Available in a Space-Saving 16-Pin Thin QFN (3mm x 3mm x 0.8mm) Package

Application

Cell Phones
Flat-Panel Monitors
MP3 Players
Notebook and Desktop PCs
PDAs
Portable Audio Equipment
Smartphones

Specifications

Product Category	Audio Amplifiers	Series	MAX9722
Product	Headphone Amplifiers	Class	Class-AB
Output Power	130 mW	Mounting Style	SMD/SMT
Type	2-Channel Headphone	Audio - Load Impedance	32 Ohms
THD plus Noise	0.009 %	Supply Voltage - Max	5.5 V
Supply Voltage - Min	2.4 V	Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C	CMRR - Common Mode Rejection Ratio	- 70 dB
Operating Supply Current	5.5 mA	Pd - Power Dissipation	1.176 W
Product Type	Audio Amplifiers	PSRR - Power Supply Rejection Ratio	- 90 dB
Factory Pack Quantity	2500	Subcategory	Audio ICs
Vos - Input Offset Voltage	500 uV	Part # Aliases	MAX9722