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CS6422-ISZ Datasheet(PDF) 6 Page - Cirrus Logic

Part No. CS6422-ISZ
Description  Enhanced Full-Duplex Speakerphone IC
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Maker  CIRRUS [Cirrus Logic]
Homepage  http://www.cirrus.com
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CS6422
6
ANALOG TRANSMISSION CHARACTERISTICS (T
A = 25°C, DVDD = AVDD = 5 V, f XTAL =
20.480 MHz, RVol=TVol=RGain=TGain= 0 dB, HDD=TSD=RSD=1, analog inputs and outputs loaded with
resistors and capacitors as shown in the typical connection diagram, Figure 4)
MICROPHONE AMPLIFIER (T
A = 25°C, DVDD = AVDD = 5 V, fXTAL = 20.480 MHz)
DIGITAL CHARACTERISTICS (T
A = 25°C, DVDD = AVDD = 5 V,fXTAL = 20.480 MHz)
Parameter
Symbol
Min
Typ
Max
Units
Idle Channel Noise
C-Message weighted (0-4 kHz)
(Inputs grounded
C-Message weighted (0-4 kHz)
through a capacitor)
Psophometrically weighted (0-4 kHz)
-80
11
-78
-73
dBV
dBrnC0
dBm0p
Signal-to-Noise Ratio
C-Message weighted (0-4 kHz)
(1.0 Vrms, 1 kHz sine wave input)
SNR
73
80
dB
Total Harmonic Distortion
C-Message weighted (0-4 kHz)
(1.0 Vrms, 1 kHz sine wave input)
THD
0.030
0.1
%
Programmable Analog Gain
RGain/TGain = 00
RGain/TGain = 01
RGain/TGain = 10
RGain/TGain = 11
0
6
9.5
12
dB
Volume Control Stepsize (TVol/RVol)
3
dB
ADC Full-scale Voltage Input
0.9
1.0
Vrms
DAC Full-scale Voltage Output
1.0
1.2
Vrms
ADC Noise Floor
C-Message weighted (0-4 kHz)
-83
dBV
DAC Noise Floor, DAC muted C-Message weighted (0-4 kHz)
-83
dBV
Parameter
Symbol
Min
Typ
Max
Units
Gain (Zsource = 50Ω)Amic
34
dB
Signal-to-Noise Ratio
C-Message weighted (0-4 kHz)
SNRm
70
dB
Input Impedance
Zinm
8k
Input Offset Voltage
Voffm
2.12
V
Parameter
Symbol
Min
Typ
Max
Units
High-Level Input Voltage
VIH
DVDD-1.0
V
Low-Level Input Voltage
VIL
1.0
V
Input Leakage Current
Ileak
10
µA
Input Capacitance
CIN
5pF
CS6422
6
DS295F1




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