WM8148 Datasheet, PDF (13/43 Pages) Wolfson Microelectronics plc – 12-bit/12MSPS CCD/CIS Analogue Front End/Digitiser

WM8148
TYPICAL OVERALL SYSTEM PERFORMANCE
(INCLUDING CDS, PGA AND ADC BLOCKS)
DNL VS CODES
INL VS CODES
Production Data
22
1 .15.5
11
0 .05.5
00
-0-.05.5
-1-1
-1-.15.5
-2-2
00
551122
11002244
11553366
22004488
22556600
33007722
33558844
44009966
Ou^Ot^up^tu^put ^tD^Da^att^aa^CC^odo^ed^ses
5 .50.000
4 .40.000
3 .30.000
2 .20.000
1 .10.000
0 .00.000
- 1-.10.000
- 2-.20.000
- 3-.30.000
- 4-.40.000
- 5-.50.000
00
55122
1100244
1155366
22004488
2256600
33007722
3355844
4400966
Ou^Ot^up^tpu^ut^{t D}D^aa^tata^CoC^do^esdes
Figure 9 DNL Vs Output Data Codes
(MODE 1, MCLK = 32MHz, AVDD = 5V, DVDD = 3.3V)
Figure 10 INL Vs Output Data Codes
(MODE 1, MCLK = 32MHz, AVDD = 5V, DVDD = 3.3V)
GROUNDED-INPUT HISTOGRAMS
1
RMS noise = 0.26 LSB
1
94.36%
1
0
0
0.00%
0
N-2
2.85%
2.79%
N-1
N
N+1
Output Data Code
0.00%
N+2
Figure 11 Unity Gain Histogram
(MODE 1, MCLK = 32MHz, GAIN = 1, AVDD = 5V,
DVDD = 3.3V)
40.57%
RMS noise = 0.95 LSB
20.90%
26.49%
4.58%
0.40%
N-3
N-2
6.34%
N-1
N
N+1
Output Data Code
0.63%
N+2
N+3
Figure 12 Maximum Gain Histogram
(MODE 1, MCLK = 32MHz, GAIN = 7.4, AVDD = 5V,
DVDD = 3.3V)
WOLFSON MICROELECTRONICS LTD
PD Rev 4.0 April 1999
13