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Annex
CO1 Add-On
Parameters
Counter
Number
Inputs
Counter resolution
Count frequency
Latch width
Reference quartz oscillator
Reference frequency
Prescaler by 4
Accuracy and Drift
Counter inputs differential
Differential input thresh-
old voltage
Input hysteresis
Range of common mode
voltage
Differential slew rate
Permissible differential
input voltage
Counter inputs single ended
Edge recognition, pos.
Edge recognition, neg.
Switching hysteresis
Input current
a. see also data sheet MAX3098 from MAXIM
b. see also data sheet 74LS19 from Texas Instruments
A-4
Symbol
Conditions
4 counters (CNTR1 ... CNTR4)
For each counter 3 differential inputs (A/CLK, B/DIR, CLR/LATCH); counter inputs
programmable in pairs for differential or TTL mode (single-ended)
Input CLK
f
CLK
Input A/B
LATCH
f
ref
f
/ 4
ref
a
-10V ≤ V
V
TH
13.2V
-10V ≤ V
∆V
TH
13.2V
V
CM
for each input
b
(with Schmitt trigger)
V
(Low)
T+
V
(Low)
V
T-
CC
V
- V
T+
T-
I
V
H
I
I
V
L
I
min.
≤
CM
-200
≤
CM
-10
0.33
1,65
= 5V
0,75
0,4
= 2,7V
= 0,4V
ADwin-Gold USB / ENET, manual version 3.8, October 2005
ADwin
typ.
max.
Unit
32
20
MHz
5
32
20
MHz
5
100
ppm
+200
mV
40
mV
+13.2
V/µs
±3.9
1,9
2,15
1,0
1,25
0,9
20
-50
Bit
Bit
V
V
V
µA
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