CONFIDENTIAL ADVANCE INFORMATION Rev. 0.71

April 6, 2015

ES9023 Datasheet

ESS TECHNOLOGY, INC. 237 South Hillview Drive, Milpitas, CA 95035, USA Tel (408) 643-8800 • Fax (408) 643-8801

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DAC / OP-AMP

Each HyperStream® DAC is followed by an op-amp circuit for each channel. A pop suppression circuit is added on the

output to eliminate any “pop” noise that may be heard during muting, un-muting, power-up and power-down sequences. In

some conditions, pop noise may be audible. See the MUTE_B pin section above.

Charge Pump (Negative Voltage Generation)

This is an analog circuit required to generate an internal negative supply. With positive and negative supplies, the op-amp

circuits will be able to generate a ground-referenced 2Vrms output.