Cirrus Logic CS470xx - Manual (Page 23)

23 DS787PP9
5.17 DAC Characteristics
Figure 5-14. ADC Differential Input Test Circuit
5.16.3 ADC Digital Filter Characteristics
1. Filter response is guaranteed by design.
2. Response is clock-dependent and scales with Fs.
5.17 DAC Characteristics
5.17.1 Analog Output Characteristics (Commercial)
Test Conditions (unless otherwise specified): TA = 0–+70°C; VDD = 1.8V±5%, VDDA(VA) = 3.3V±5%; 1 kHz sine wave
driven through a filter shown in
Fig. 5-15 or Fig. 5-16 ; DSP running test application; Measurement Bandwidth is 20 Hz–20
kHz.
Parameter 1,2 Min Typ Max Unit
Fs = 96 kHz
Passband (Frequency Response) to –0.1 dB corner 0 — 0.4896 Fs
Passband Ripple — — 0.08 dB
Stopband 0.5688 — — Fs
Stopband Attenuation 70 — — dB
Total Group Delay — 12/Fs — s
High-pass Filter Characteristics
Frequency Response:
–3.0 dB
–0.13 dB
—
— 1
20
—
— Hz
Hz
Phase Deviation @ 20 Hz — 10 — Deg
Passband Ripple — — 0 dB
Filter Settling Time — 10 5 /Fs 0 s
Differential Single-ended
Parameter Min Typ Max Min Typ Max Unit
Fs = 96 kHz
Dynamic Range
A-weighted
Unweighted
102
99
108
105 —
— 99
96 105
102 —
— dB
dB
Total Harmonic Distortion + Noise
0 dB
–20 dB
–60 dB
—
—
— –98
–88
–48 –90
—
—
—
—
— –95
–85
–45 –87
—
—
dB
dB
dB
Interchannel Isolation (1 kHz) — 95 — — 95 — dB
10µF
C
L
R
i AIN+
100K
10µF
C
L
R
i AIN-
100K
AIN_xA-
AIN_xB-
or
AIN_xA+
AIN_xB+
or
+
+