HI1175 Datasheet, PDF (6/13 Pages) Intersil Corporation – 8-Bit, 20 MSPS, Flash A/D Converter

Timing Diagrams
ANALOG INPUT
HI1175
V_I (1)
V_I (2)
V_I (3)
V_I (4)
EXTERNAL CLOCK
UPPER COMPARATOR BLOCK
UPPER DATA
S (1)
C (1) S (2) C (2)
S (3) C (3)
S (4) C (4)
MD (0)
MD (1)
MD (2)
MD (3)
LOWER REFERENCE VOLTAGE
LOWER COMPARATOR BLOCK A
LOWER DATA A
RV (0)
RV (1)
RV (2)
RV (3)
S (1)
H (1)
LD (-1)
C (1)
S (3)
H (3)
LD (1)
C (3)
LOWER COMPARATOR BLOCK B
LOWER DATA B
H (0)
C (0) S (2)
LD (-2)
H (2)
LD (0)
C (2)
S (4)
H (4)
LD (2)
DIGITAL OUTPUT
OUT (-2)
OUT (-1)
OUT (0)
OUT (1)
FIGURE 2.
Typical Performance Curves
20
100
V_PP = 5.0V, V_RT = 2.5V, V_RB = 0.5V
T_A = 25^oC, V_IN = 2V_P-P
20
15
15
10
10
50
5
4.0
4.5
5.0
5.5
POWER SUPPLY VOLTAGE (V)
FIGURE 3. SUPPLY CURRENT vs SUPPLY VOLTAGE
5
0
5
10
15
20
25
30
35
SAMPLING RATE (MSPS)
FIGURE 4. SUPPLY CURRENT AND POWER vs SAMPLING
RATE
4-1074