Cirrus Logic CS4373A - 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
( Note 15 ) 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
( Note 15 , 16 ) 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
( Note 17 , 18 ) 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
( Note 16 , 17 , 18 ) 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
( Note 16 , 17, 18 ) 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