Datasheet

Rev. A | Page 58 of 80 | July 2011
ADSP-BF504/ADSP-BF504F/ADSP-BF506F
ADC—TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C, unless otherwise noted.
Figure 50. PSRR vs. Supply Ripple Frequency Without Supply Decoupling
Figure 51. Channel-to-Channel Isolation
Figure 52. SINAD vs. Analog Input Frequency for Various Supply Voltages
SUPPLY RIPPLE FREQUENCY (kHz)
20000 200 400 600 800 1000 1200 1400 1600 1800
PSRR (dB)
–60
–70
–80
–90
–100
–110
–120
100mV p-p SINE WAVE ON AV
DD
NO DECOUPLING
SINGLE-ENDED MODE
EXTERNAL REFERENCE
INTERNAL REFERENCE
NOISE FREQUENCY (kHz)
10000 100 200 300 400 500 600 800700 900
ISOLATION (dB)
–50
–55
–60
–65
–70
–75
–90
–95
–80
–85
–100
V
DD
= 5V
INPUT FREQUENCY (kHz)
30000 1000 2000500 1500 2500
SINAD (dB)
74
72
68
70
66
62
64
60
V
DD
= 5V
DIFFERENTIAL MODE
V
DD
= 3V
DIFFERENTIAL MODE
RANGE = 0 TO V
REF
Figure 53. Typical FFT
Figure 54. Typical DNL
Figure 55. Typical INL
FREQUENCY (kHz)
10000 100 200 300 400 500 600 700 800 900
(dB)
–10
–30
–50
–70
–90
–110
4096 POINT FFT
V
DD
= 5V, V
DRIVE
= 3V
F
SAMPLE
= 2MSPS
F
IN
= 52kHz
SINAD = 71.4dB
THD = –84.42dB
DIFFERENTIAL MODE
CODE
40000 1000 2000 3000 3500500 1500 2500
DNL ERROR (LSB)
1.0
0.6
0.8
0.2
0.4
–0.2
0
–0.6
–0.8
–0.4
–1.0
V
DD
= 5V, V
DRIVE
= 3V
DIFFERENTIAL MODE
CODE
40000 500 1000 1500 2000 2500 3000 3500
INL ERROR (LSB)
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
V
DD
= 5V, V
DRIVE
= 3V
DIFFERENTIAL MODE