MAX9718DETB+T

Product Summary

The MAX9718DETB+T is a differential input audio power amplifier. It is ideal for portable audio devices with internal speakers. The differential input structure improves noise rejection and provides common-mode rejection. A bridge-tied load (BTL) architecture minimizes external component count, while providing highquality, power audio amplification. The MAX9718DETB+T is a single-channel amplifier while the MAX9719 is a dualchannel amplifier for stereo systems. Both devices deliver 1.4W continuous average power per channel to a 4Ω load with less than 1% THD+N while operating from a single +5V supply. The MAX9718DETB+T is available as adjustable gain amplifiers or with internally fixed gains of 0dB, 3dB, and 6dB to reduce component count. Applications are (1)Mobile Phones; (2)PDAs; (3)Portable Devices.

Parametrics

MAX9718DETB+T absolute maximum ratings: (1)Supply Voltage (VCC to GND): -0.3V to +6V; (2)Any Other Pin to GND: -0.3V to (VCC + 0.3V); (3)IN_, BIAS, SHDM, SHDN, SHDN Continuous Current: 20mA; (4)OUT_ Short-Circuit Duration to GND or VCC: Continuous; (5)Continuous Power Dissipation (TA = +70°C); (6)Continuous Power Dissipation (TA = +70°C)9-Bump UCSP (derate 5.2mW/°C above +70°C): 1067mW; (7)Continuous Power Dissipation (TA = +70°C)10-Pin TDFN (derate 24.4mW/°C above +70°C): 1951mW; (8)Continuous Power Dissipation (TA = +70°C)10-Pin μMAX (derate 10.3mW/°C above +70°C): 825mW; (9)Continuous Power Dissipation (TA = +70°C)16-Bump UCSP (derate 8.2mW/°C above +70°C): 1633mW; (10)Continuous Power Dissipation (TA = +70°C)16-Pin TQFN (derate 16.9mW/°C above +70°C): 1349mW; (11)Continuous Power Dissipation (TA = +70°C)16-Pin TSSOP (derate 21.3mW/°C above +70°C): 1702mW; (12)Operating Temperature Range: -40°C to +85°C; (13)Junction Temperature: +150°C; (14)Storage Temperature Range: -65°C to +150°C; (15)Lead Temperature (soldering, 10s): +300°C; (16)Soldering Temperature (reflow): +260°C.

Features

MAX9718DETB+T features: (1)2.7V to 5.5V Single-Supply Operation; (2)Very High -93dB PSRR at 217Hz; (3)1.4W into 4Ω at 1% THD+N (per Channel); (4)Differential Input; (5)Internal Fixed Gain to Reduce Component Count; (6)Adjustable Gain Option; (7)100nA Low-Power Shutdown Mode; (8)No Audible Clicks or Pops at Power-Up/Down; (9)Improved Performance Pin-Compatible Upgrade to LM4895; (10)1.8V Logic Compatible.

Diagrams