Cirrus Logic CS4297A - Manual (Page 5)

CS4297A
5
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 k
Ω/
1000 pF load, 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.
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 the Section 10, Parameter and Term Definitions.
3. Path refers to the signal path used to generate this data. These paths are defined in the Section 10,
Parameter and Term Definitions.
4. This specification is guaranteed by silicon characterization, it is not production tested.
Parameter
(Note 2)
Symbol Path
(Note 3)
CS4297A-KQZ CS4297A-JQZ
Unit Min Typ Max Min Typ Max
Full Scale Input Voltage
Line Inputs
Mic Inputs
Mic Inputs
(20 dB internal gain)
A-D
A-D
A-D 0.91
0.91
0.091
1.00
1.00
0.10 -
-
- 0.91
0.91
0.091
1.00
1.00
0.10 -
-
- V
RMS
V
RMS
V
RMS
Full Scale Output Voltage
Line,Alternate Line, and Mono Outputs
D-A 0.91 1.0 1.13 0.91 1.0 1.13 V
RMS
Frequency Response (Note 4)
Analog Ac = ± 0.25 dB
DAC Ac = ± 0.25 dB
ADC Ac = ± 0.25 dB
FR
A-A
D-A
A-D
20
20
20 -
-
- 20,000
20,000
20,000 20
20
20 -
-
- 20,000
20,000
20,000 Hz
Hz
Hz
Dynamic Range
Stereo Analog inputs to LINE_OUT
Mono Analog inputs to LINE_OUT
DAC Dynamic Range
ADC Dynamic Range DR
A-A
A-A
D-A
A-D
90
85
85
85 95
90
90
90 -
-
-
- -
-
-
- 90
85
87
85 -
-
-
- dB FS A
dB FS A
dB FS A
dB FS A
DAC SNR (-20 dB FS input w/
CCIR-RMS filter on output) SNR
D-A - 70 - - - - dB
Total Harmonic Distortion + Noise
(-3 dB FS input signal):
Line/Alternate Line Output
DAC
ADC
(all inputs except phone/mic)
ADC (phone/mic)
THD+N
A-A
D-A
A-D
A-D
-
-
-
- -90
-91
-88
-84 -80
-80
-80
-74 -
-
-
- -
-
-
- -74
-74
-74
-74 dB FS
dB FS
dB FS
dB FS
Power Supply Rejection Ratio
(1 kHz, 0.5 V
RMS
w/ 5 V DC offset)(Note 4) 40 60 - - 40 - dB
Interchannel Isolation 70 88 - - 88 - dB
Spurious Tone (Note 4) - -100 - - -100 - dB FS
Input Impedance (Note 4) 10 - - 10 - - k
Ω
External Load Impedance 10 - - 10 - - k
Ω
Output Impedance (Note 4) - 730 - - 730 -
Ω
Input Capacitance (Note 4) - 5 - - 5 - pF
Vrefout 2.0 2.28 2.5 2.0 2.28 2.5 V
DS318PP6 5
CS4297A