CA3318 Intersil Corporation, CA3318 Datasheet - Page 10

• Manufacturer Part Number: CA3318
• Description: CMOS Video Speed/ 8-Bit/ Flash A/D Converter
• Manufacturer: Intersil Corporation

Signal-to-Noise + Distortion Ratio (SINAD)
SINAD is the measured RMS signal to RMS sum of all other
spectral components below the Nyquist frequency excluding DC.
Effective Number of Bits (ENOB)
The effective number of bits (ENOB) is derived from the
SINAD data. ENOB is calculated from:
where: V
ENOB = (SINAD - 1.76 + V
6.4V REF
CORR
= 0.5dB.
A
CORR
0V TO 6.4V
MID-POINT
+6.4V REF
DRIVER
FIGURE 13. USING TWO CA3318s FOR 9-BIT RESOLUTION
)/6.02,
VIN1
+5V
+5V
A
A
A
CA3318
V
V
V
V
V
V
V
V
V
V
V
V
AA
AA
AA
AA
REF
IN
IN
REF
REF
IN
IN
REF
4-18
+
-
+
-
+
-
+
-
Total Harmonic Distortion (THD)
THD is the ratio of the RMS sum of the first 5 harmonic
components to the RMS value of the measured input signal.
BIT 8
BIT 1
BIT 8
BIT 1
CE2
CE1
CE2
CE1
V
V
V
V
OF
PH
OF
PH
CL
CL
DD
DD
SS
SS
D
D
+5V
NC
+5V
BIT 9
BIT 8
BIT 1
CLOCK
PHASE