CS6422
CS6422
ANALOG TRANSMISSION CHARACTERISTICS (TA = 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)
=
Parameter
C-Message weighted (0-4 kHz)
C-Message weighted (0-4 kHz)
Psophometrically weighted (0-4 kHz)
Symbol
Min
Typ
Max
Units
Idle Channel Noise
(Inputs grounded
through a capacitor)
-80
11
-78
-73
dBV
dBrnC0
dBm0p
Signal-to-Noise Ratio
(1.0 Vrms, 1 kHz sine wave input)
C-Message weighted (0-4 kHz)
SNR
THD
73
80
dB
Total Harmonic Distortion
C-Message weighted (0-4 kHz)
0.030
0.1
%
(1.0 Vrms, 1 kHz sine wave input)
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)
ADC Full-scale Voltage Input
3
dB
0.9
1.0
1.0
-83
-83
Vrms
Vrms
dBV
dBV
DAC Full-scale Voltage Output
1.2
ADC Noise Floor
C-Message weighted (0-4 kHz)
DAC Noise Floor, DAC muted C-Message weighted (0-4 kHz)
MICROPHONE AMPLIFIER (TA = 25°C, DVDD = AVDD = 5 V, fXTAL = 20.480 MHz)
Parameter
Symbol
Min
Typ
Max
Units
Gain (Zsource = 50Ω)
Amic
34
dB
Signal-to-Noise Ratio
Input Impedance
C-Message weighted (0-4 kHz)
SNRm
Zinm
70
8
dB
kΩ
V
Input Offset Voltage
Voffm
2.12
DIGITAL CHARACTERISTICS (TA = 25°C, DVDD = AVDD = 5 V,fXTAL = 20.480 MHz)
Parameter
Symbol
VIH
Min
Typ
Max
Units
V
High-Level Input Voltage
Low-Level Input Voltage
Input Leakage Current
Input Capacitance
DVDD-1.0
VIL
1.0
10
V
Ileak
µA
pF
CIN
5
6
6
DS295F1
CIRRUS [ CIRRUS LOGIC ]
