iC149
preliminar y
Rev A0.2, Page 2/6
PROGRAMMABLE ns-PULSE GENERATOR
DESCRIPTION
Pulse generator iC149 produces pulses with a small
duty cycle in the range of ca. 1 ns up to 64 ns max. in
steps of 0.25 ns at a pulse frequency of 1 MHz. The
pulse width is set by means of two hexadecimal cod-
ing switches in coarse and fine steps.
The pulses are output both as LVDS and TTL signals.
This module can easily be used with the evaluation
boards HG1D, NZN1D ans NZP1D.
ELECTRICAL CHARACTERISTICS
Test Conditions: Vs = ±15 V, Ta = 25 °C, System Impedace 50
Ω
Item
No.
101
102
Symbol
Parameter
Conditions
Min.
V5
I(V5)
Power Supply
Supply Current
V5 = 5 V, S1 = OFF
V5 = 5 V, S1 = ON, TRIGGER open
V5 = 5 V, S1 = ON, TRIGGER 50
Ω
vs. Ground
V5 = 5 V, Ta = 27 °C,
coarse
= "F",
fine
= "F"
V5 = 5 V, Ta = 27 °C,
coarse
= "0",
fine
= "C"
4.75
Typ.
5
45
50
75
63.75
1
Max.
5.25
V
mA
mA
mA
ns
ns
Unit
Power Supply
Pulse Width
201
202
Tp
max
Tp
min
Maximum Pulsweite
Minimum Pulsweite
ICHAUS [ IC-HAUS GMBH ]
