MC1650 Datasheet, PDF (5/11 Pages) Motorola, Inc – DUAL A/D CONVERTER

MC1650 MC1651
FIGURE 1 — SWITCHING TIME TEST CIRCUIT @ 25°C
Vin to Channel A
VCC =
+ 7.0 Vdc
VXX =
+ 2.0 Vdc
Vout to
Channel B
VR1, VR2, VR3
P1
P2
P3
VX
P4
0.1 µF
0.1 µF _Coax
10 ₇ 1 16
VCC Gnd
+
–
D
Q
C
Q
+
–
D
Q
C
Q
VEE
0.1 µF
VEE =
–3.2 Vdc
Note: All power supply and logic levels are shown shifted 2.0 volts positive.
50 ohm termination to ground located in each scope channel input.
All input and output cables to the scope are equal lengths of 50 ohm coaxial cable.
FIGURE 2 — SWITCHING AND PROPAGATION WAVEFORMS @ 25°C
The pulse levels shown are used to check ac parameters
over the full common-mode range.
V — INPUT TO OUTPUT
CLOCK TO OUTPUT
Vin
50%
tpd
tpd
VIH _P1
50%
VR _Vin
VIL
50%
40 ns
30 ns
30 ns
30 ns
40 ns
90%
Q
50%
10%
P4
50%
30 ns
t+
t–
C
tpd
tpd
Test pulses: t _+, t _– = 1.5 ± 0.2 ns (10% to 90%)
f = 5.0 MHz
50% Duty Cycle
50%
Q
P4: t _+, t _– = 1.5 ± 0.2 ns.
TEST PULSE LEVELS
P1
P2
P3
MC1650 MC1651 MC1650 MC1651 MC1650 MC1651
VIH +2.1 V +2.1 V +5.0 V +4.5 V –0.3 V –0.8 V
VR +2.0 V +2.0 V +4.9 V +4.4 V –0.4 V –0.9 V
VIL +1.9 V +1.9 V +4.8 V +4.3 V –0.5 V –1.0 V
VIH + 2.1 V
VR + 2.0 V
VIL + 1.9 V
+1.11 V
+0.31 V
MOTOROLA
4–338
MECL Data
DL122 — Rev 6