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CS44L11-CZZ Arkusz danych(PDF) 1 Page - Cirrus Logic

Numer części CS44L11-CZZ
Szczegółowy opis  Low Voltage Class-D PWM Headphone Amplifier
Download  34 Pages
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Producent  CIRRUS [Cirrus Logic]
Strona internetowa  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS44L11-CZZ Arkusz danych(HTML) 1 Page - Cirrus Logic

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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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