Ac differential modes 1, 2, 3 (cont.), Cs4373a – Cirrus Logic CS4373A User Manual
Page 8
CS4373A
8
DS699F2
AC DIFFERENTIAL MODES 1, 2, 3 (CONT.)
Notes: 15. Specification measured using CS3301A amplifier at corresponding gain with the CS5371A / CS5372A
modulator measuring a 430 Hz bandwidth. Amplified noise dominates for x16, x32, x64 amplifier gains.
16. Buffered outputs (BUF
±
) include 1/f noise not present on the precision outputs (OUT
±
).
17. Tested with a 31.25 Hz sine wave at -1 dB amplitude.
18. Specification measured using CS3301A amplifier at corresponding gain using the CS5371A / CS5372A
modulator measuring a 430 Hz bandwidth. Amplified noise in the harmonic bins dominates THD
measurements for x16, x32, x64 amplifier gains.
Parameter
Symbol Min Typ
Max
Unit
Signal to Noise
Signal to Noise
1/1 -> 1x
(OUT
±
Unloaded)
1/2 -> 2x
1/4 -> 4x
1/8 -> 8x
1/16 -> 16x
1/32 -> 32x
1/64 -> 64x
SNR
OUT
-
-
-
-
-
-
-
114
114
114
113
111
108
103
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
Signal to Noise
1/1 -> 1x
(BUF
±
Unloaded, 1 k
Ω Load)
1/2 -> 2x
1/4 -> 4x
1/8 -> 8x
1/16 -> 16x
1/32 -> 32x
1/64 -> 64x
SNR
BUF
-
-
-
-
-
-
-
110
106
101
95
89
83
77
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
Total Harmonic Distortion
Total Harmonic Distortion
1/1 -> 1x
(OUT
±
Unloaded)
1/2 -> 2x
1/4 -> 4x
1/8 -> 8x
1/16 -> 16x
1/32 -> 32x
1/64 -> 64x
THD
OUT
-
-
-
-
-
-
-
- 116
- 115
- 114
- 112
- 111
- 110
- 106
- 112
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
Total Harmonic Distortion
1/1 -> 1x
(BUF
±
Unloaded)
1/2 -> 2x
1/4 -> 4x
1/8 -> 8x
1/16 -> 16x
1/32 -> 32x
1/64 -> 64x
THD
BUF
-
-
-
-
-
-
-
- 108
- 105
- 100
- 94
- 88
- 82
- 76
- 90
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
Total Harmonic Distortion
1/1 -> 1x
(BUF
±
1 k
Ω Load)
1/2 -> 2x
1/4 -> 4x
1/8 -> 8x
1/16 -> 16x
1/32 -> 32x
1/64 -> 64x
THD
BUFL
-
-
-
-
-
-
-
- 102
- 101
- 97
- 92
- 87
- 82
- 76
- 80
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB