
8
Typical Performance Curves
FIGURE 3. EFFECTIVE NUMBER OF BITS (ENOB) vs INPUT
FREQUENCY
FIGURE 4. SINAD AND SNR vs INPUT FREQUENCY
NOTE: SFDR depicted here does not include any harmonic distortion.
FIGURE 5. -2HD, -3HD, -THD AND SFDR vs INPUT FREQUENCY
FIGURE 6. EFFECTIVE NUMBER OF BITS (ENOB) vs
ANALOG INPUT LEVEL
FIGURE 7. EFFECTIVE NUMBER OF BITS (ENOB) vs
SAMPLE CLOCK DUTY CYCLE
FIGURE 8. EFFECTIVE NUMBER OF BITS (ENOB) vs VREF+
INPUT FREQUENCY (MHz)
9
8
7
6
110
100
EN
OB
(B
ITS
)
fS = 60 MSPS
TA = 25
oC
INPUT FREQUENCY (MHz)
55
45
35
1
10
100
dB
SND
SNR
fS = 60 MSPS
TA = 25
oC
fS = 60 MSPS
TA = 25
oC
-2HD
-THD
SFDR
-3HD
100
10
1
85
75
65
55
45
INPUT FREQUENCY (MHz)
dBc
INPUT LEVEL (-dBFS)
0
5
10
15
20
25
30
35
3
4
5
6
7
8
9
fS = 60 MSPS
TA = 25
oC
fIN = 10MHz
E
N
OB
(
B
ITS
)
10
40
45
50
55
60
6
7
8
9
DUTY CYCLE (%, tH/tCLK)
ENOB
(BITS
)
fS = 60 MSPS
TA = 25
oC
fIN = 10MHz
2.25 2.30 2.35 2.40 2.45
2.50
2.55 2.60
2.65 2.70
2.75
7.6
7.8
8.0
8.2
8.4
8.6
8.8
VREF+ (V)
ENOB
(BITS
)
fS = 60 MSPS
TA = 25
oC
fIN = 10MHz
VREF+ - VREF- = 0.5V
HI5766