Datasheet

Dual/Quad, Unipolar/Bipolar,
High-Voltage Digital Pulsers
MAX4940/MAX4940A
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +3V, V
CC
= +12V, V
EE
= -12V, V
PP_
= +100V, V
NN_
= -100V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are
at T
A
= +25NC.) (Note 2)
Note 2: Specifications are guaranteed for the stated global conditions, unless otherwise noted. 100% production tested at
T
A
= +70NC. Specifications at T
A
= 0NC are guaranteed by design.
Typical Operating Characteristics
(V
DD
= +3.3V, V
CC
= +12V, V
EE
= -12V, V
PP_
= +100V, V
NN_
= -100V, f
OUT
= 5MHz, R
L
= 100I, C
L
= 100pF, T
A
= +25NC, unless
otherwise noted.)
I
CC
vs. OUTPUT FREQUENCY
MAX4940 toc01
FREQUENCY (MHz)
I
CC
(mA)
13117 953
0.32
0.30
0.34
0.36
0.38
0.40
0.42
0.44
0.46
0.48
0.50
1 15
4 PULSES, PRF = 10kHz
R
L
= 100I
C
L
= 100pF
I
CC
vs. OUTPUT FREQUENCY
MAX4940 toc02
FREQUENCY (MHz)
I
CC
(mA)
982 3 4 65 7
5
10
15
20
25
30
35
40
0
1 10
CONTINUOUS SWITCHING,
V
PP_
= V
CC
= +5V,
V
NN_
= V
EE
= -5V,
V
DD
= +3.3V
R
L
= 100I
C
L
= 100pF
I
CC
vs. TEMPERATURE
MAX4940 toc03
TEMPERATURE (NC)
I
CC
(FA)
605030 402010
0.32
0.30
0.34
0.36
0.38
0.40
0.42
0.44
0.46
0.48
0.50
0 70
4 PULSES AT 10MHz, PRF = 10kHz
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
OUT_ Fall Time (V
PP_
to GND)
(Figure 1)
t
FPO
V
PP_
= +100V, V
NN_
= -100V, 10% to 90%,
V
CC
= +12V Q5%, V
EE_
= -V
CC_
17 35 ns
Output Enable Time from EN
(Figure 2)
t
EN
V
PP_
= +5V, V
NN_
= -5V 100 ns
Output Disable Time from EN
(Figure 2)
t
DI
V
PP_
= +5V, V
NN_
= -5V 150 ns
2nd Harmonic Distortion LV THD2_LV
f
OUT_
= 5MHz, V
PP_
= -V
NN_
= +5V,
V
CC
= +12V
-40 dB
2nd Harmonic Distortion HV THD2_HV
f
OUT_
= 5MHz, V
PP_
= -V
NN_
= +50V, V
CC
= +12V, 10 periods
-45 dB
Pulse Cancellation 2HD
f
OUT_
= 5MHz, V
PP_
= -V
NN_
= +50V,
V
CC
= +12V, 10 periods, 1st harmonic
cancellation
-43 dB
RMS Output Jitter t
J
10 ps
Crosstalk CT Adjacent channels, f = 5MHz -60 dB