Timing Diagrams (Continued)
CS
HI5800
CS
CONV
t2
t3
t1
FIGURE 2A. START CONVERSION SETUP TIME
t5
t6
OE
t4
FIGURE 2B. OUTPUT ENABLE SETUP TIME
CONV
CS
t7
ACQUIRE N
IRQ
N CONVERSION
t8
ACQUIRE N + 1
t9
DATA VALID
N - 1 DATA
N+1 CONVERSION
t10
N DATA
N + 1 DATA
AO
t11
OE
t13
t14
D4 - D11
D11 - D4
D3 - D0, 0000 D11 - D4
D0 - D11, OVF
N DATA
t12
FIGURE 3. CONTINUOUS CONVERSION TIMING
Typical Performance Curves
D11 - D4
N + 1 DATA
80
70
60
50
40
30
20
10
0
20K
200K
2M
INPUT FREQUENCY (Hz)
FIGURE 4. TYPICAL SNR vs INPUT FREQUENCY
90
80
70
60
50
40
30
20
10
0
20K
200K
2M
INPUT FREQUENCY (Hz)
FIGURE 5. TYPICAL THD vs INPUT FREQUENCY
4-6