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CS44L11 Datasheet(PDF) 1 Page - Cirrus Logic |
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CS44L11 Datasheet(HTML) 1 Page - Cirrus Logic |
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1 / 34 page  Copyright © Cirrus Logic, Inc. 2005 (All Rights Reserved) Preliminary Product Information This document contains information for a new product. Cirrus Logic reserves the right to modify this product without notice. http://www.cirrus.com Low Voltage Class-D PWM Headphone Amplifier Features Up to 95 dB Dynamic Range 1.8 V to 2.4 V Analog and Digital Supplies Sample Rates up to 96 kHz Digital Tone Control – 3 Selectable HPF and LPF Corner Frequencies – 12 dB Boost for Bass and Treble - 1 dB step size Programmable Digital Volume Control – +18 to -96 dB in 1 dB steps Peak Signal Soft Limiting De-emphasis for 32 kHz, 44.1 kHz, and 48 kHz Selectable Outputs for Each Channel, including – Channel A: R, L, mono (L + R) / 2, mute – Channel B: R, L, mono (L + R) / 2, mute PWM PopGuard® 23 mW/Channel into 16 Ω @ 2.4 V Description The CS44L11 is a complete stereo digital-to-PWM Class-D audio amplifier system controller including in- terpolation, volume control, and a headphone amplifier in a 16-pin TSSOP package. The CS44L11 architecture uses a direct-to-digital ap- proach that maintains digital signal integrity to the final output filter. This minimizes analog interference effects that can negatively affect system performance. The CS44L11 contains on-chip digital bass and treble boost, peak signal limiting, and de-emphasis. The PWM amplifier can achieve greater than 90% efficiency. This efficiency leads to longer battery life for portable sys- tems, smaller device package, less heat sink requirements, and smaller power supplies. The CS44L11 is ideal for portable audio, headphone amplifiers, and mobile phones. ORDERING INFORMATION CS44L11-CZZ, Lead Free -10 to 70 °C 16-pin TSSOP Multibit ∆Σ Modulator with Correction Multibit ∆Σ Modulator with Correction Digital Volume Control, Bass/Treble Boost, Compression Limiting, De-emphasis Control Port SCL/DIF0 MCLK Serial Port SDA/DEM PWM Conversion PWM Conversion HP_B VA_HPB GND_HPB Level Shifter VA_HPA Level Shifter HP_A GND_HPA RST Interpolation SCLK LRCK Input Sampling Rate LRCLK/MCLK Ratio SDIN Audio VD CS44L11 JULY '05 DS640PP4 |
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