GM339
LOW POWER QUAD
DIFFERENTIAL COMPARATOR
Description
The GM393 consists of four independent
precision voltage comparators which were
designed specifically to operate from a single
power supply over a wide range of voltages.
Operation from split power supplies is also
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.
Application areas include limit comparators,
simple analog to digital converters; pulse,
square wave and time delay generators; wide
range VCO; MOS clock timers; multivibrators
and high voltage digital logic gates. The GM339
are designed to directly interface with TTL and
CMOS. When operated from both plus and
minus power supplies, the GM339 will directly
interface with MOS logic, where their low power
drain is a distinct advantage over standard
comparators.
The GM339 is available in DIP-8 and SOP-8
packages.
Features
Single- supply Range: ±1.0V to ±18V
Wide supply voltage range: ±2.0V to
±36V
Very low supply current drain (0.4 mA) -
independent of supply voltage
Low input biasing current: 25 nA
Low input offset current: ±5 nA
Maximum offset voltage: ±3 mV
Input common-mode voltage range
includes ground
Differential input voltage range equal to
the power supply voltage
Low output saturation voltage: 250 mV
at 4 mA
Output voltage compatible with TTL,
DTL, ECL, MOS and CMOS logic
systems
Connecting Diagram
(Top View)
OUT COMP 1
1
14
OUT COMP 3
OUT COMP 2
V
CC
2
3
4
5
6
7
SOP-14, DIP-14 PACKAGE
13
OUT COMP 4
12
GND
11
COMP 4 IN-
10
COMP 4 IN+
9
8
COMP 3 IN-
COMP 3 IN+
COMP 2 IN-
COMP 2 IN+
COMP 1 IN-
GM339
V1.00
COMP 1 IN+
2
GM339
LOW POWER QUAD
DIFFERENTIAL COMPARATOR
Electrical Characteristics
(V
CC
= 5V, at specified free-air temperature, unless otherwise
specified)
Parameter
Input offset Voltage
Symbol
V
IO
Condition
V
CC
= 5V to Max
V
IC
= V
ICR
min
V
O
= 1.4V
V
O
= 1.4V
T
A
= 25℃
Full Range
T
A
= 25℃
Full Range
T
A
= 25℃
Full Range
T
A
= 25℃
Full Range
I
OL
= 4mA, V
ID
= 1V
V
CC
= 15V,
V
O
= 1V to 11V
R
L
= 15K to V
CC
V
OH
= 5V, V
ID
= 1V
V
OH
= 30V, V
ID
= 1V
V
OH
= 1.5V, V
ID
= -1V
R
L
=
∞
, V
CC
= 5V
R
L
=
∞
, V
CC
= 30V
R
L
Connected to
5V through 5.1k.
C
L
= 15pF
T
A
= 25℃
Full Range
T
A
= 25℃
T
A
= 25℃
Full Range
T
A
= 25℃
T
A
= 25℃
Full Range
100mV input
step with 5mV
overdrive
TTL - level input
step
Min
Typ
±2
Max
±5
9
Unit
mV
Input Offest Current
I
IO
±5
±50
±150
nA
Input Bias Current
Common-Mode Input
Voltage Range**
Low-Level output
Voltage
Large-Signal
Differential Voltage
Amplification
High Level Output
Current
Low Level Output
Current
Supply Current
I
IB
V
O
=1.4V
-20
-250
400
nA
V
ICR
0 to V
CC
-1.5V
0 to V
CC
-2.0V
150
400
700
50
200
0.1
1
6
0.8
1.0
2.5
1.3
50
V
V
OL
mV
A
VD
V/mV
nA
µA
mA
mA
I
OH
I
OL
I
CC
Response Time
(Note 1)
µs
0.3
All characteristics are measured under open loop conditions with zero common-mode input voltage unless otherwise specified.
"MAX" V
CC
for testing purposes is 30V. Full range is 0°C to 70°C.
**
The voltage at either input or common - mode should not be allowed to go negative by more than 0.3V. The upper end of the
common - mode voltage range is V
CC
- 1.5V, but either or both inputs can go to 30V without damage.
Note 1:
C
L
includes probe and jig capacitance. The response time specified is the interval between the input step function and the
instant when the output crosses 1.4V.
GM339
V1.00
5
GM339
LOW POWER QUAD
DIFFERENTIAL COMPARATOR
Typical Performance Characteristics
80
70
I
IB
, Input Bias Current (nA)
60
50
40
30
20
10
0
0
5
10
15
20
25
30
35
40
T
A
= 125°C
T
A
= -55°C
T
A
= 0°C
T
A
= 25°C
T
A
= 70°C
V
OL
, Saturation Voltage (V
DC
)
1.0
T
A
= 125°C
0.1
T
A
= 25°C
10
Out of
Saturation
T
A
= -55°C
0.01
0.001
0.01
0.1
1.0
10
100
V
CC
, Supply Voltage (VDC)
Figure 1. Input Bias Current versus Power
Supply Voltage
I
SINK
, Output Sink Current (mA)
Figure 2. Output Saturation Voltage v.s.
Output Sink Current
1.0
T
A
= -55°C
T
A
= 0°C
T
A
= 25°C
0.8
I
CC
, Supply Current (mA)
0.6
T
A
= 70°C
0.4
0.2
0.0
0
T
A
= 125°C
R
L
=
∞
5
10
15
20
25
30
35
40
V
CC
, Supply Voltage (V
DC
)
Figure 3. Power Supply Current versus
Power Supply Voltage
GM339
V1.00
6
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