Specification	MAX9728BETC+

Features	Depop, Shutdown, Short-Circuit and Thermal Protection
Max Output Power x Channels @ Load	60 mW
Max Output Power x Channels @ Load [custom]	2
Mounting Type	Surface Mount
Operating Temperature [Max]	85 C
Operating Temperature [Min]	-40 ¯C
Output Type	Headphones, 2-Channel (Stereo)
Package / Case	12-WFQFN Exposed Pad
Supplier Device Package	12-TQFN (3x3)
Type	Class AB
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

MAX9728 Series

60mW, DirectDrive, Stereo Headphone Amplifier with Shutdown

Part	Type	Mounting Type	Output Type	Supplier Device Package	Voltage - Supply [Max]	Voltage - Supply [Min]	Package / Case [x]	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Max Output Power x Channels @ Load	Max Output Power x Channels @ Load [custom]	Features
Analog Devices Inc./Maxim Integrated MAX9728BEUD+T	Class AB	Surface Mount	Headphones 2-Channel (Stereo)	14-TSSOP	5.5 V	4.5 V	0.173 " 4.4 mm	14-TSSOP	85 C	-40 ¯C	60 mW	2	Depop Short-Circuit and Thermal Protection Shutdown
Analog Devices Inc./Maxim Integrated MAX9728BEUD+	Class AB	Surface Mount	Headphones 2-Channel (Stereo)	14-TSSOP	5.5 V	4.5 V	0.173 " 4.4 mm	14-TSSOP	85 C	-40 ¯C	60 mW	2	Depop Short-Circuit and Thermal Protection Shutdown
Analog Devices Inc./Maxim Integrated MAX9728AEUD+	Class AB	Surface Mount	Headphones 2-Channel (Stereo)	14-TSSOP	5.5 V	4.5 V	0.173 " 4.4 mm	14-TSSOP	85 C	-40 ¯C	60 mW	2	Depop Short-Circuit and Thermal Protection Shutdown
Analog Devices Inc./Maxim Integrated MAX9728BETC+T	Class AB	Surface Mount	Headphones 2-Channel (Stereo)	12-TQFN (3x3)	5.5 V	4.5 V		12-WFQFN Exposed Pad	85 C	-40 ¯C	60 mW	2	Depop Short-Circuit and Thermal Protection Shutdown
Analog Devices Inc./Maxim Integrated MAX9728AEUD+T	Class AB	Surface Mount	Headphones 2-Channel (Stereo)	14-TSSOP	5.5 V	4.5 V	0.173 " 4.4 mm	14-TSSOP	85 C	-40 ¯C	60 mW	2	Depop Short-Circuit and Thermal Protection Shutdown
Analog Devices Inc./Maxim Integrated MAX9728AETC+T	Class AB	Surface Mount	Headphones 2-Channel (Stereo)	12-TQFN (3x3)	5.5 V	4.5 V		12-WFQFN Exposed Pad	85 °C 85 C	-40 °C -40 ¯C	60 mW	2	Depop Short-Circuit and Thermal Protection Shutdown
Analog Devices Inc./Maxim Integrated MAX9728AETC+	Class AB	Surface Mount	Headphones 2-Channel (Stereo)	12-TQFN (3x3)	5.5 V	4.5 V		12-WFQFN Exposed Pad	85 C	-40 ¯C	60 mW	2	Depop Short-Circuit and Thermal Protection Shutdown
Analog Devices Inc./Maxim Integrated MAX9728BETC+	Class AB	Surface Mount	Headphones 2-Channel (Stereo)	12-TQFN (3x3)	5.5 V	4.5 V		12-WFQFN Exposed Pad	85 C	-40 ¯C	60 mW	2	Depop Short-Circuit and Thermal Protection Shutdown

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Description

General part information

MAX9728 Series

The MAX9728A/MAX9728B stereo headphone amplifiers are designed for display and notebook applications or portable equipment where board space is at a premium. These devices 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. The MAX9728A offers an externally adjustable gain, while the MAX9728B has an internally preset gain of -1.5V/V. The MAX9728A/MAX9728B deliver up to 60mW per channel into a 32Ω load and have low 0.02% THD+N. An 80dB at 1kHz power-supply rejection ratio (PSRR) allows these devices to operate from noisy digital supplies without an additional linear regulator. Comprehensive click-and-pop circuitry suppresses audible clicks and pops on startup and shutdown.The MAX9728A/MAX9728B operate from a single 4.5V to 5.5V supply, consume only 3.5mA of supply current, feature short-circuit and thermal-overload protection, and are specified over the extended -40°C to +85°C temperature range. The devices are available in tiny 12-pin Thin QFN (3mm x 3mm x 0.8mm) and 14-pin TSSOP packages (5mm x 4.4mm x 1.1mm).ApplicationsCRT TVsDVD PlayersLCD/PDP DisplaysMultimedia MonitorsNotebook PCs

Documents

Technical documentation and resources

MAX9728 Reliability Data

Reliability Data

Package Drawing - 12-LFCSP-3X3X0.75

Package Drawing

MAX9728-MAX9728B: 60mW, DirectDrive, Stereo Headphone Amplifier with Shutdown Data Sheet (Rev.1)

Data Sheet