CS4205_05 Datasheet, PDF (7/81 Pages) Cirrus Logic – CrystalClear® Audio Codec ’97 for Portable Computing

CS4205
1. CHARACTERISTICS AND SPECIFICATIONS
ANALOG CHARACTERISTICS (Standard test conditions unless otherwise noted: T_ambient = 25° C,
AVdd = 5.0 V ±5%, DVdd = 3.3 V ±5%; 1 kHz Input Sine wave; Sample Frequency, Fs = 48 kHz; Z_AL=100 kΩ/
1000 pF load for Mono and Line Outputs; C_DL = 18 pF load (Note 1); Measurement bandwidth is 20 Hz - 20 kHz,
18-bit linear coding for ADC functions, 20-bit linear coding for DAC functions; Mixer registers set for unity gain.
Parameter
(Note 2)
CS4205-KQZ
Symbol Path
Unit
(Note 3) ^Min
Typ
Max
Full Scale Input Voltage
Line Inputs
Mic Inputs
(10dB = 0, 20dB = 0)
Mic Inputs
(10dB = 1, 20dB = 0)
Mic Inputs
(10dB = 0, 20dB = 1)
Mic Inputs
(10dB = 1, 20dB = 1)
Full Scale Output Voltage
Line and Mono Outputs
Frequency Response
(Note 4) FR
Analog
Ac = ± 0.25 dB
DAC
Ac = ± 0.25 dB
ADC
Ac = ± 0.25 dB
A-D
0.91
1.00
-
A-D
0.91
1.00
-
A-D
0.283 0.315
-
A-D
0.091
0.10
-
A-D
0.0283 0.0315
-
V_RMS
V_RMS
V_RMS
V_RMS
V_RMS
D-A
0.91
1.0
1.13
V_RMS
A-A
20
D-A
20
A-D
20
-
20,000
Hz
-
20,000
Hz
-
20,000
Hz
Dynamic Range
Stereo Analog Inputs to LINE_OUT
Mono Analog Input to LINE_OUT
DAC Dynamic Range
ADC Dynamic Range
DR
A-A
90
95
A-A
85
90
D-A
85
90
A-D
85
90
-
dB FS A
-
dB FS A
-
dB FS A
-
dB FS A
DAC SNR
SNR
(-20 dB FS input w/ CCIR-RMS filter on output)
D-A
-
70
-
dB
Total Harmonic Distortion + Noise
THD+N
(-3 dB FS input signal):
Line Output
A-A
-
-90
-80
dB FS
DAC
D-A
-
-87
-80
dB FS
ADC
(all inputs)
A-D
-
-84
-80
dB FS
Power Supply Rejection Ratio
(1 kHz, 0.5 V_RMS w/ 5 V DC offset)
(Note 4)
40
60
-
dB
Interchannel Isolation
70
87
-
dB
Spurious Tone
(Note 4)
-
-100
-
dB FS
Input Impedance
(Note 4)
10
-
-
kΩ
Notes: 1. Z_AL refers to the analog output pin loading and C_DL refers to the digital output pin loading.
2. Parameter definitions are given in Section 15, Parameter and Term Definitions.
3. Path refers to the signal path used to generate this data. These paths are defined in Section 15,
Parameter and Term Definitions.
4. This specification is guaranteed by silicon characterization; it is not production tested.
DS489PP4
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