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CS5345 Datasheet

  • CS5345

  • 104 dB, 24-Bit, 192 kHz Stereo Audio ADC

  • 1136.51KB

  • 43页

  • CIRRUS

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CS5345
105 dB, 24-Bit, 192 kHz Stereo Audio ADC
A/D Features
Multi-bit Delta Sigma modulator
105 dB dynamic range
-95 dB THD+N
Stereo 6:1 Input Multiplexer
Programmable Gain Amplifier (PGA)
鈥?+/- 12 dB gain, 0.5 dB step size
鈥?Zero crossing, click-free transitions
General Description
The CS5345 integrates an analog multiplexer, program-
mable gain amplifier, and stereo audio analog-to-digital
converter. The CS5345 performs stereo analog-to-digital
(A/D) conversion of up to 24-bit serial values at sample
rates up to 192 kHz.
A 6:1 stereo input multiplexer is included for selecting
between line level or microphone level inputs. The mi-
crophone input path includes a +32 dB gain stage and a
low noise bias voltage supply. The PGA is available for
line or microphone inputs and provides gain/attenuation
of
卤12
dB in 0.5 dB steps.
The output of the PGA is followed by an advanced 5th-
order, multi-bit delta sigma modulator and digital filter-
ing/decimation. Sampled data is transmitted by the serial
audio interface at rates from 4 kHz to 192 kHz in either
slave or master mode.
Integrated level translators allow easy interfacing be-
tween the CS5345 and other devices operating over a
wide range of logic levels.
Stereo microphone inputs
鈥?+32 dB gain stage
鈥?Low noise bias supply
Up to 192 kHz sampling rates
Selectable serial audio interface formats
鈥?Left justified up to 24-bit
鈥?I虏S up to 24-bit
High pass filter or DC offset calibration
System Features
Power down mode
+3.3 V to +5 V analog power supply, nominal
+3.3 V to +5 V digital power supply, nominal
Direct interface with 1.8 V to 5 V logic levels
ORDERING INFORMATION
CS5345-CQZ -10掳 to 70掳 C
Pin-compatible with CS4245
CDB5345
3.3 V to 5 V
3.3 V to 5 V
48-pin LQFP
Evaluation Board
1.8 V to 5 V
Leve l T ranslator
I虏C /S P I
C ontrol D ata
Inte rrupt
O ve rflow
Re se t
Re gister C onfigura tion
Inte rna l V oltage
Re fe rence
Left P G A O utput
R ight P G A O utput
S tere o Input 1
S tere o Input 2
S tere o Input 3
PGA
MU X
PG A
+32 d B
P C M S erial Inte rfa ce
H igh P a ss
F ilte r
Line a r P hase
A nti-A lias F ilte r
Multibit
O versa mpling
A DC
Multibit
O ve rsa mpling
ADC
S e rial
A udio
O utput
Le ve l
T ra nsla tor
S tere o Input 4 /
Mic Input 1 & 2
H igh P a ss
F ilte r
Line a r P hase
A nti-A lias F ilte r
+32 d B
S tere o Input 5
S tere o Input 6
Advance Product Information
Cirrus Logic, Inc.
www.cirrus.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright Cirrus Logic, Inc. 2004
(All Rights Reserved)
漏
JUNE 鈥?4
DS658A1
1

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