Timing Diagrams (Continued)
13
CLK
(EXTERNAL)
STRT
DRDY
CA3310, CA3310A
1
2
2
2
3
4
5
tR STRT
tSU STRT
tW STRT
DON’T CARE
tD3 DRDY
INPUT
HOLD
TRACK
HOLD
FIGURE 4. STRT PULSED LOW, DRST TIED HIGH, EXTERNAL CLOCK
13
CLK
(INTERNAL
OR
EXTERNAL)
DRST
1
DON’T CARE
tR DRST
tW DRST
DRDY
tD4
DRDY
FIGURE 5. DRST PULSED LOW, STRT TIED HIGH
Typical Performances Curves
800
700
VDD = 3V - 6V = VAA+
5V
VDD = 6V
600
4V
500
400
3V
300
200
100
0
SHORT
10
100
1000
EXTERNAL RESISTANCE (kΩ)
OPEN
FIGURE 6. INTERNAL CLOCK FREQUENCY vs EXTERNAL
RESISTANCE
5
VDD = 6V
4 5V
4V
3
VDD = VAA+ = 3V - 6V
INTERNAL CLOCK MAY NOT
WORK AT VDD < 4V FOR
TEMPERATURE < -40oC
REXT = SHORTED
REXT = OPEN
6V
2
5V
3V
1
4V
0
-55 -40
3V
0 25
85
125
TEMPERATURE (oC)
FIGURE 7. INTERNAL CLOCK FREQUENCY vs
TEMPERATURE AND SUPPLY VOLTAGE
7