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MAX97200BEWC+ Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX97200BEWC+ Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 13 page _______________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Low-Power, Low-Offset, Dual Mode, Class H DirectDrive Headphone Amplifier 19-4981; Rev 1; 3/10 General Description The MAX97200 is a 45mW Class H headphone amplifier that runs from a single low 1.8V supply voltage and employs Maxim’s second-generation DirectDrive technology. The MAX97200 features a Dual ModeK internal charge pump to generate the power rails for the amplifier. The charge-pump output can be QPVIN/2 or QPVIN depend- ing on the amplitude of the output signal. When the out- put voltage is low, the power-supply voltage is QPVIN/2. When the output signal demands larger output voltage, the charge pump switches modes so that a greater power-supply voltage is realized and more output power can be delivered to the load. Second-generation DirectDrive technology improves power consumption when compared to first-generation DirectDrive amplifiers. The MAX97200 can be powered from a regulated 1.8V and have similar power consump- tion to a traditional DirectDrive amplifier that is powered from 0.9V. Maxim’s patented DirectDrive architecture uses an inverting charge pump to derive a negative voltage supply. The headphone amplifier is powered between the positive supply and the generated negative rail. This scheme allows the audio output signal to be biased about ground, eliminating the need for large DC-blocking capacitors between the amplifier output and the headphone load. Low-output offset voltage provides very good click-and- pop performance both into and out of shutdown. High signal-to-noise ratio maintains system fidelity. The MAX97200 is available in a tiny, 12-bump wafer level packaging (WLP 1.27mm x 1.65mm) with a small, 0.4mm lead pitch and specified over the -40NC to +85NC extended temperature range. Applications Cellular Phones Smartphones MP3 Players VoIP Phones DirectDrive is a registered trademark of Maxim Integrated Products, Inc. Dual Mode is a trademark of Maxim Integrated Products, Inc. Features S Second-Generation DirectDrive Technology S Dynamic, Class H, Dual Mode Charge Pump S Low Voltage Operation, VPVIN = 1.8V S Low Quiescent Current, 1.15mA (typ) at VPVIN = 1.8V S Eliminates Large Output DC-Blocking Capacitors S Industry-Leading Click-and-Pop Performance S High-Fidelity, SNR 105dB (5.6µV Output Noise) S Output Power 34mW into 32I (THD+N 1%) S Output Power 45mW into 16I (THD+N 10%) S Tiny, 12-Bump, 1.27mm x 1.65mm (0.4mm Lead Pitch) WLP Package Ordering Information/ Selector Guide Note: All devices operate over the -40°C to +85°C tempera- ture range. +Denotes a lead(Pb)-free and RoHS-compliant package. Typical Operating Circuit EVALUATION KIT AVAILABLE PART GAIN (dB) PIN- PACKAGE TOP MARK MAX97200AEWC+ 3 12 WLP ABF MAX97200BEWC+ 0 12 WLP ABG LEFT AUDIO INPUT LEFT AUDIO OUTPUT SHDN RIGHT AUDIO INPUT RIGHT AUDIO OUTPUT CHARGE PUMP APPLICATIONS PROCESSOR MAX97200 |
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