MAX9728AETC+

The MAX9728AETC+ belongs to MAX9728A/MAX9728B family which is a kind of stereo headphone amplifiers are designed for display and notebook applications or portable equipment where board space is at a premium. And they deliver up to 60mW per channel into a 32 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 MAX9728AETC+/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 12pin Thin QFN (3mm x 3mm x 0.8mm)and 14-pin TSSOP packages (5mm x 4.4mm x 1.1mm). The MAX9728AETC+/MAX9728B These devices use a unique DirectDrivearchitecture to produce a ground-referenced output from a single supply, eliminating the need for large DCblocking capacitors, saving cost, board space, and component height. The MAX9728AETC+ offers an externally adjustable gain, while the MAX9728B has an internally preset gain of -1.5V/V.

The features of MAX9728AETC+ can be summarized as (1)no bulky DC-blocking capacitors required; (2)low-power shutdown mode, < 0.1A; (3)adjustable gain (MAX9728A)or Fixed -1.5V/V Gain (MAX9728B); (4)low 0.02% THD+N; (5)high PSRR (80dB at 1kHz)eliminates LDO; (6)integrated click-and-pop suppression; (7)4.5V to 5.5V single-supply operation; (8)low quiescent current (3.5mA); (9)available in space-saving packages 12-Pin Thin QFN (3mm x 3mm x 0.8mm)/ 14-Pin TSSOP (5mm x 4.4mm x 1.1mm).

The absolute maximum ratings of MAX9728AETC+ are (1)VDD to PGND: -0.3V to +6V; (2)PVSto SVSS: -0.3V to +0.3V; (3)PGND to SGND: -0.3V to +0.3V; (4)C1P to PGND: -0.3V to (VDD + 0.3V); (5)C1N to PGND: (PVS0.3V)to +0.3V; (6)PVSand SVSto PGND: -6V to +0.3V; (7)IN_ to SGND (MAX9728A): -0.3V to (VDD + 0.3V); (8)IN_ to SGND (MAX9728B): (SVS0.3V)to (VDD + 0.3V); (9)OUT_ to SVS(Note 1): -0.3V to Min (VDD SVS+ 0.3V, +9V); (10)OUT_ to VDD (Note 2): +0.3V to Max (SVSVDD 0.3V, -9V); (11)SHDN to _GND: -0.3V to +6V; (12)OUT_ short circuit to SGND: Continuous; (13)short circuit between OUTL and OUTR: Continuous; (14)continuous input current into PVSS: 260mA; (15)continuous input current (any other pin): ±20mA; (16)continuous power dissipation (TA = +70°C); (17)12-Pin TQFN (derate 14.7mW/°C above +70°C): 1177mW; (18)14-Pin TSSOP (derate 9.1mW/°C above +70°C): 727mW; (19)operating temperature range: -40°C to +85°C; (20)storage temperature range: -65°C to +150°C; (21)junction temperature: +150°C; (22)lead temperature (soldering, 10s): +300°C.