Analog passthrough characteristics, Cs42l55 analog passthrough characteristics – Cirrus Logic CS42L55 User Manual
Page 16
16
DS773F1
CS42L55
ANALOG PASSTHROUGH CHARACTERISTICS
Test Conditions (unless otherwise specified): Connections to the CS42L55 are shown in the
“Typical Connection Diagram” on
; Input is a 1 kHz sine wave through the passive input filter shown in
, PGA and HP/Line gain = 0 dB; All Sup-
plies = VA, VCP Mode; GND = AGND = 0 V; T
A
= +25
°C; Measurement bandwidth is 20 Hz to 20 kHz. Sample Frequency =
48 kHz.
COMBINED DAC INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE
Notes:
15. Response is clock dependent and will scale with Fs. Note that the response plots (
to
) have been normalized to Fs and can be de-normalized by multiplying the X-axis scale by Fs.
16. Measurement bandwidth is from Stopband to 3 Fs.
VA = 2.5 V
VA = 1.8 V
Parameter
Min
Typ
Max
Min
Typ
Max
Unit
Analog In to HP Amp (ADC is powered down)
R
L
= 3 k
Ω (+2 dB Output Analog Gain)
Dynamic Range
A-weighted
unweighted
-
-
94
91
-
-
-
-
91
88
-
-
dB
dB
Total Harmonic Distortion + Noise
-1 dB
-20 dB
-60 dB
-
-
-
-70
-71
-31
-
-
-
-
-
-
-80
-68
-28
-
-
-
dB
dB
dB
Full-scale Input Voltage
-
0.80•VA
-
-
0.80•VA
-
Vpp
Full-scale Output Voltage
-
0.93•VA
-
-
0.93•VA
-
Vpp
Passband Ripple
0/-0.3
0/-0.3
dB
R
L
= 16
Ω (-4 dB Output Analog Gain)
Dynamic Range
A-weighted
unweighted
-
-
94
91
-
-
-
-
91
88
-
-
dB
dB
Total Harmonic Distortion + Noise
-1 dB
-20 dB
-60 dB
-
-
-
-70
-71
-31
-
-
-
-
-
-
-80
-68
-28
-
-
-
dB
dB
dB
Full-scale Input Voltage
-
0.80•VA
-
-
0.80•VA
-
Vpp
Output Power
-
12
-
-
6.5
-
mW
Passband Ripple
-
0/-0.3
-
-
0/-0.3
-
dB
Analog In to Line Amp (ADC is powered down)
R
L
= 3 k
Ω (+2 dB Output Analog Gain)
Dynamic Range
A-weighted
unweighted
-
-
94
91
-
-
-
-
91
88
-
-
dB
dB
Total Harmonic Distortion + Noise
-1 dB
-20 dB
-60 dB
-
-
-
-70
-71
-31
-
-
-
-
-
-
-80
-68
-28
-
-
-
dB
dB
dB
Full-scale Input Voltage
-
0.80•VA
-
-
0.80•VA
-
Vpp
Full-scale Output Voltage
-
0.89•VA
-
-
0.89•VA
-
Vpp
Passband Ripple
0/-0.3
0/-0.3
dB
Parameter
Min
Typ
Max
Unit
Frequency Response 20 Hz to 20 kHz
Fs = 48.000 kHz
Fs = 44.118 kHz
-0.04
-0.14
-
-
+0.04
+0.14
dB
dB
Passband
to -0.05 dB corner
to -3 dB corner
-
-
0.48
0.49
-
-
Fs
Fs
Stopband
0.55
-
-
Fs
Stopband Attenuation
49
-
-
dB
Total Group Delay
-
9/Fs
-
s
De-emphasis Error
Fs = 44.118 kHz
-
-
+0.05/-0.25
dB