Datasheet

Rev. A | Page 59 of 80 | July 2011
ADSP-BF504/ADSP-BF504F/ADSP-BF506F
Figure 56. Linearity Error vs. V
REF
Figure 57. Effective Number of Bits vs. V
REF
Figure 58. V
REF
vs. Reference Output Current Drive
V
REF
(V)
2.50 0.5 1.0 1.5 2.0
LINEARITY ERROR (LSB)
1.0
0.6
0.8
0.2
0.4
–0.2
0
–0.6
–0.4
–1.0
–0.8
V
DD
= 3V/5V
DIFFERENTIAL MODE
POSITIVE INL
POSITIVE DNL
NEGATIVE DNL
NEGATIVE INL
V
REF
(V)
5.00 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
EFFECTIVE NUMBER OF BITS
12.0
11.0
11.5
10.0
10.5
9.0
9.5
8.0
7.5
8.5
7.0
V
DD
= 5V
DIFFERENTIAL MODE
V
DD
= 3V
DIFFERENTIAL MODE
V
DD
= 3V
SINGLE-ENDED MODE
V
DD
= 5V
SINGLE-ENDED MODE
CURRENT LOAD (PA)
2000 20 40 60 80 100 120 140 160 180
V
REF
(V)
2.5010
2.5000
2.5005
2.4995
2.4990
2.4985
2.4980
Figure 59. Histogram of Codes for 10k Samples in Differential Mode
Figure 60. Histogram of Codes for 10k Samples in Single-Ended Mode
Figure 61. CMRR vs. Common-Mode Ripple Frequency
CODE
2046 2047 20492048 2050
NO. OF OCCURRENCES
10000
8000
9000
6000
7000
4000
5000
2000
1000
3000
0
10000
CODES
DIFFERENTIAL
MODE
INTERNAL
REFERENCE
CODE
2046 2047 2048 2049 2050
NO. OF OCCURRENCES
10000
9000
8000
7000
6000
5000
4000
3000
2000
1000
0
9984
CODES
SINGLE-ENDED
MODE
INTERNAL
REFERENCE
5 CODES 11 CODES
RIPPLE FREQUENCY (kHz)
12000 200 400 600 800 1000
CMRR (dB)
–60
–65
–70
–75
–80
–85
–95
–90
–100
DIFFERENTIAL MODE
V
DD
= 3V/5V