TS372
Low power dual CMOS voltage comparator
Features
■
■
■
■
■
■
■
■
■
■
Wide single supply range or dual supplies 3 V to 16 V or ±1.5 V to ±8 V
Very low supply current: 0.1 mA/comparator independent of supply voltage
Extremely low input bias current: 1 pA typ
Extremely low input offset currents: 1 pA typ
Low input offset voltage
Input common-mode voltage range includes
GND
Low output saturation voltage 150 mV typical
Output compatible with TTL, MOS and CMOS
High input impedance: 10
12 Ω typical
Fast response time: 200 ns typ for TTL level input step
Applications
■
■
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Battery powered electronics
General-purpose portable device
General-purpose low voltage application
Description
These devices consist of two independent precision voltage comparators, designed to operate with single or dual supplies.
These differential comparators use the
STMicroelectronics silicon lin MOS process giving them an excellent consumption-speed ratio.
These devices are ideally suited for low consumption applications.
N
DIP8
(plastic package)
D
SO8
(plastic micropackage)
Pin connections (top view)
/UTPUT
)NVERTING)NPUT
.ONINVERTING)NPUT
6
##
.ONINVERTING)NPUT
)NVERTING)NPUT
/UTPUT
6
##
April 2011 Doc ID 4068 Rev 2 1/10 www.st.com
10
Application schematic TS372
Figure 1.
Schematic diagram (1/2 TS372)
6
##
4
4
4
4 4
2
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4 4
4
4
4
4
4 4
4
4
4
4
4
/UTPUT
4
6
##
)NPUT )NPUT
!-
2/10 Doc ID 4068 Rev 2
TS372
2
Absolute maximum ratings and operating conditions
Absolute maximum ratings and operating conditions
Table 1.
Absolute maximum ratings
Symbol
V
CC
+
V id
V i
V
I
I o o
F
Supply voltage
(1) (2)
Input voltage
(4)
Parameter
Differential input voltage
(3)
Output voltage
Output current
Forward current in ESD protection diodes on input
(5)
Duration of output circuit to GND
(6)
Power dissipation
(7)
DIP8
SO8
Value
18
±18
18
18
20
50
Infinite
Unit
V
V
V
V mA mA p d
1250
710 mW
T stg
T j
Storage temperature range
Junction temperature
-65 to +150
+150
1.
Maximum power supply voltage when the comparator is not switching.
2.
All voltage values, except differential voltage, are with respect to network ground terminal.
3.
Differential voltages are the non-inverting input terminal with respect to the inverting input terminal.
4.
The magnitude of the input and the output voltages must never exceed the magnitude of the positive supply voltage.
5.
Guaranteed by design.
6.
Short-circuit from outputs to Vcc+ can cause excessive heating and eventual destruction.
7.
Pd is calculated with T
SO-8 package.
amb
= +25°C, T j
= +150°C and R thja
= 100°C/W for DIP8 package = 175°C/W for
°C
°C
Table 2.
Symbol
Operating conditions
Parameter
V
CC
+
Vicm
T oper
Supply voltage
Input common-mode voltage range
(1)
T amb
= 25°C
T min
≤ amb
≤ max
TS372C
TS372I/TS372M
Operating free-air temperature range
TS372C
TS372I
TS372M
1.
And input voltages < = 12 V.
Value
3 to 16
V
V
V
CC
+
CC
+
CC
+
-2
-2.25
-2.5
0 to +70
-40 to +125
-55 to +125
Unit
V
V
°C
Doc ID 4068 Rev 2 3/10
Electrical characteristics TS372
Table 3.
Symbol
V io
I io
I ib
Electrical characteristics at V
CC
(unless otherwise specified)
+ = 5 V, V
CC
- = 0 V, Tamb = 25°C
Min.
Typ.
Max.
Parameter
Input offset voltage (V ic
= V icm min
)
(1)
T amb
= 25°C
T min
≤ amb
≤ max
Input offset current
(2)
T amb
= 25°C
T min
≤ amb
≤ max
TS372I/TS372M
TS372C
Input offset current
(2)
T amb
= 25°C
T min
≤ amb
≤ max
TS372I/TS372M
TS372C
2
1
1
10
12
100
200
150
300
Unit mV pA pA
I
V
I
I
OH
OL
OL
CC
High level output current (V id
= 1 V)
T amb
= 25°C V
OH
T min
≤ amb
≤ max
= 5 V
V
OH
= 15 V
Low level output voltage (V id
= -1, I
OL
= 4 mA)
T amb
= 25°C
T min
≤ amb
≤ max
Low level output current (V id
= -1, V
OL
= 1.5 V)
Supply current (each comparator)
(V id
= 1 V, no load)
6
0.1
100
45
150
1
400
700
375 nA
µA mV mA
µA
1.
The specified offset voltage is the maximum value required to drive the output down to 400 mV or up to 4 V with R
L
= 100 k
Ω
to V cc
+
2.
Maximum values including unavoidable inaccuracies of the industrial test.
Table 4.
Symbol
Switching characteristics (V
CC
+ = 5 V, Tamb = 25°C)
Parameter Min.
Typ.
Max.
Unit t re
Response time
(R
L
= 5.1 k Ω connected to 5 V, C
L
= 15 pF
(1)
100mV input step with 5mV overdrive
TTL level input step
600
200 ns
1.
The specified response time is the internal between the input signal and the instant when the output signal crosses 1.4 V.
Note: If one of the two channels is not used, it must be configured with a differential input voltage greater than 100 mV to avoid switching.
4/10 Doc ID 4068 Rev 2
TS372 Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK
® specifications, grade definitions and product status are available at: www.st.com
.
ECOPACK
®
is an ST trademark.
Doc ID 4068 Rev 2 5/10
Package information
4.1 DIP8 package information
Figure 2.
DIP8 package mechanical drawing
TS372
6/10 b2 c
D
E
A
A1
A2 b
E1 e eA eB
L
Table 5.
Ref.
DIP8 package mechanical data
Dimensions
Min.
Millimeters
Typ.
Min.
Max.
5.33
0.38
2.92
0.36
1.14
0.20
9.02
7.62
6.10
9.27
7.87
6.35
2.54
7.62
3.30
0.46
1.52
0.25
4.95
0.56
1.78
0.36
10.16
8.26
7.11
0.015
0.115
0.014
0.045
0.008
0.355
0.300
0.240
2.92
3.30
10.92
3.81
0.115
0.130
0.018
0.060
0.010
0.365
0.310
0.250
0.100
0.300
0.130
Inches
Typ.
Max.
0.210
0.195
0.022
0.070
0.014
0.400
0.325
0.280
0.430
0.150
Doc ID 4068 Rev 2
TS372
Figure 3.
SO-8 package mechanical drawing
Package information e h
L
L1 k ccc c
D
E
E1
A
A1
A2 b
Table 6.
Ref.
SO-8 package mechanical data
Dimensions
Min.
Millimeters
Typ.
Min.
Max.
1.75
0.25
0.10
1.25
0.28
0.17
4.80
5.80
3.80
4.90
6.00
3.90
1.27
0.48
0.23
5.00
6.20
4.00
0.004
0.049
0.011
0.007
0.189
0.228
0.150
0.25
0.40
0.50
1.27
0.010
0.016
1.04
0 8°
0.10
1°
Doc ID 4068 Rev 2
Inches
Typ.
0.193
0.236
0.154
0.050
0.040
Max.
0.069
0.010
0.019
0.010
0.197
0.244
0.157
0.020
0.050
8°
0.004
7/10
Ordering information TS372
Table 7.
Order codes
Part number
Temperature range
TS372CD
TS372CDT
TS372CN
TS372ID
TS372IDT
TS372IN
0°C, +70°C
0°C, +70°C
0°C, +70°C
-40°C, +125°C
-40°C, +125°C
-40°C, +125°C
Package
SO-8
SO-8
DIP8
SO-8
SO-8
DIP8
Packing
Tube
Tape & reel
Tube
Tape & reel
Marking
8/10 Doc ID 4068 Rev 2
TS372
Table 8.
Date
01-Feb-2002
28-Apr-2011
Document revision history
Revision
1
2
Changes
Initial release.
Document reformatted.
Modified
Table 2 ,
Table 3
and Table 7
.
Revision history
Doc ID 4068 Rev 2 9/10
TS372
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