Quad Comparators,
Low Offset Voltage
139
Memory
Logic Diagram
F
EATURES
:
• Rad-Pak® technology-hardened against natural space
radiation
• Total dose hardness:
- >100 krad (Si), depending upon orbit and space mission
• Single Event Effects:
- SEL > 59.8 MeV/mg/cm
2
• Package:
• - 14 pin Rad-Pak® flat package
• Wide supply voltage range
- 2 VDC to 36 VDC or ±1 VDC to ±18 VDC
• Very low supply current drain:
- (0.8 mA) - independent of supply voltage
• Low input biasing current: 25 nA
• Differential input voltage range equal to the power supply
voltage
• Low output saturation voltage: 250 mV at 4 mA
• Power drain suitable for battery operation
• Allows sensing near GND
• Eliminates need for dual supplies
• Output voltage compatible with TTL, DTL, ECL, MOS and
CMOS logic systems
• Low input offset current and offset voltage:
- +5 nA, +3 mV
D
ESCRIPTION
:
Maxwell Technologies 139 consisting of four independent pre-
cision voltage comparators, features a greater than 100 krad
(Si) total dose tolerance, depending upon space mission.
Using Maxwell Technologies radiation- hardened Rad-Pak®
packaging technology, the 139 has an offset voltage specifica-
tion as low as 2 mV max for all four comparators. The 139
was also designed specifically to operate from a single power
supply over a wide range of voltages. Operation from split
power supplies is possible and the low power supply current
drain is independent of the magnitude of the power supply
voltage. These comparators also have a unique characteristic
in that the input common-mode voltage range includes
ground, even though operated from a single power supply
voltage.
Maxwell Technologies' patented R
AD
-P
AK
packaging technol-
ogy incorporates radiation shielding in the microcircuit pack-
age. It eliminates the need for box shielding while providing
the required radiation shielding for a lifetime in orbit or space
mission. In a GEO orbit, R
AD
-P
AK
provides greater than 100
krad (Si) radiation dose tolerance. This product is available
with screening up to Class S.
1000522
12.13.01 Rev1
All data sheets are subject to change without notice
1
(858) 503-3300 - Fax: (858) 503-3301 - www.maxwell.com
©2001 Maxwell Technologies
All rights reserved.
Quad Comparators, Low Offset Voltage
T
ABLE
1. P
INOUT
D
ESCRIPTION
P
IN
2, 1, 14, 13
4, 6, 8, 10
5, 7, 9, 11
3
12
S
YMBOL
OUTPUT1 - 4
INPUT1- – 4
INPUT+ – 4
V+
GND
D
ESCRIPTION
Output Signal
Negative Input Signal
Positive Input Signal
Positive Voltage
Ground
139
T
ABLE
2. 139 A
BSOLUTE
M
AXIMUM
R
ATINGS
P
ARAMETER
Supply Voltage (V+ - V-)
Differential Input Voltage
1
Input Voltage
Open Short-Circuit to Ground
2
Input Current (V
IN
< -0.3V
DC
)
Power Dissipation
Storage Temperature Range
Operating Temperature Range
P
D
T
S
T
A
--
--
-65
-55
S
YMBOL
V+ - V-
M
IN
--
-0.3
Continuous
M
AX
36
+36
50
1
150
125
U
NIT
V
V
V
36 V
DC
or ±18 V
DC
Memory
mA
W
°
C
°
C
ESD Tolerance
3
--
600
V
1. Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the com-
mon-mode range, the comparator will provide a proper output state. The low output voltage state must not be less than -0.3
V
DC
(or 0.3 V
DC
below the magnitude of the negative power supply, if used) (at 25°C).
2. Short Circuits from the output to V+ can cause excessive heating and eventual destruction. When considering short circuits to
ground, the maximum output current is ~20mA independent of the magnitude of V+.
3. 1.5 k
Ω
in series with 100 pF.
T
ABLE
3. D
ELTA
L
IMITS
P
ARAMETER
I
CC
V
ARIATION
±10% of specified value in Table 5
T
ABLE
4. 139 R
ECOMMENDED
O
PERATING
C
ONDITIONS
P
ARAMETER
Supply Voltage
S
YMBOL
V+ - V-
M
IN
M
AX
U
NIT
V
36 V
DC
or ±18 V
DC
1000522
12.13.01 Rev1
All data sheets are subject to change without notice
2
©2001 Maxwell Technologies
All rights reserved.
Quad Comparators, Low Offset Voltage
T
ABLE
5. 139 E
LECTRICAL
C
HARACTERISTICS
(V+ = 5V, T
A
= -55
TO
125°C,
UNLESS OTHERWISE SPECIFIED
)
P
ARAMETER
Input Offset Voltage
Input Bias Current
Input Offset Current
Input Common Mode
Voltage Range
Supply Current
Voltage Gain
S
YMBO
L
139
T
EST
C
ONDITIONS
1
M
IN
+25°C
-55 to 125°C
+25°C
-55 to 125°C
+25°C
-55 to 125°C
+25°C
-55 to 125°C
--
--
--
--
--
--
0
0
--
--
50
T
YP
2
--
25
--
3
--
--
0.8
--
200
M
AX
5
9
100
300
25
100
V+ -1.5
V+ -2.0
2.0
3.0
--
U
NIT
mV
DC
nA
DC
nA
DC
V
DC
mA
DC
V/mV
V
IO
I
IB
I
IO
V
CM
I
CC
A
V
I
IN
(+) or I
IN
(-) with Output in Linear
Range,
2
, V
CM
= 0V
I
IN
(+) - I
IN
(-), V
CM
= 0V
V+ = 30 V
DC3
R
L
=∞on all comparators, V+ = 30V +25°C
-55 to 125°C
R
L
> 15kΩ, V+=15V
DC
;
V
O
= 1V
DC
to 11 V
DC
( To support large V
O
swing)
V
IN
= TTL Logic Swing,
V
REF
= 1.4V, V
RL
= 5
V
DC
,
R
I
= 5.1k
Ω
2
+25°C
Memory
Large Signal Response
Time
Response Time
Output Sink Current
Saturation Voltage
Output Leakage Current
Differential Input Voltage
t
r
+25°C
--
300
--
ns
t
Rtil
V
RL
= 5
V
DC
, R
L
= 5.1k
Ω
4
+25°C
+25°C
+25°C
-55 to 125°C
+25°C
-55 to 125°C
-55 to 125°C
--
6.0
--
--
--
--
--
1.3
16
250
--
0.1
--
--
--
--
400
700
--
1.0
36
µs
mA
DC
mV
DC
nA
DC
µA
DC
V
DC
I
SINK
V
IN
(-) = 1V
DC
, V
IN
(+) = 0,
V
O
< 1.5V
DC
V
SAT
V
IN
(-) > 1V, V
IN
(+) = 0,
I
SINK
< 4 mA
I
CEX
V
diff
V
IN
(+) = 1V
DC
, V
IN
(-) = 0,
V
O
= 5V
DC
V
IN
(-) = 0
Keep all V
IN’s
> 0 V
DC
(or V- if used)
5
1.
At output switch point, V
O
=1.4V, RS=0
Ω
with V+ from 5V
DC
to 30 V
DC
; and over the full input common-mode range (0V
DC
to
V+-1.5V
DC
).
2. The direction of the input current is out of the IC due to the PNP input stage. This current essentially constant, independent of
the state of the output so no loading change exists on the reference or input lines.
3. The input common-mode voltage or either input voltage signal should not be allowed to go negative by more than 0.3V. The
upper end of the common-mode voltage range is V+-1.5V at 25°C, but either or both inputs can go to +30V without damage,
independent of the magnitude of V+.
4. The response time specified is for a 100mV input step with 5 mV overdrive. For larger overdrive signals 300 ns can be
obtained.
5. Positive excursions of input voltage may exceed the power level as long as the other voltage remains within the common
mode range, the comparator will provide a proper output state. The low input voltage state must not be less than -0.3 V
DC
(or
0.3V
DC
below the magnitude of the negative power supply, if used) (at 25°C).
1000522
12.13.01 Rev1
All data sheets are subject to change without notice
3
©2001 Maxwell Technologies
All rights reserved.
Quad Comparators, Low Offset Voltage
F
IGURE
1. S
UPPLY
C
URRENT
139
Memory
F
IGURE
2. I
NPUT
C
URRENT
1000522
12.13.01 Rev1
All data sheets are subject to change without notice
4
©2001 Maxwell Technologies
All rights reserved.
Quad Comparators, Low Offset Voltage
F
IGURE
3. O
UTPUT
S
ATURATION
V
OLTAGE
139
Memory
F
IGURE
4. R
ESPONSE
T
IME FOR
V
ARIOUS
I
NPUT
O
VERDRIVES
– N
EGATIVE
T
RANSITION
1000522
12.13.01 Rev1
All data sheets are subject to change without notice
5
©2001 Maxwell Technologies
All rights reserved.
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