TS3702
Micropower dual CMOS voltage comparators
Features
■
■
■
■
■
■
■
■
■
Push-pull CMOS output (no external pull-up
resistor required)
Extremely low supply current: 9μA typ /
comparator
Wide single supply range: 2.7V to 16V or dual
supplies (±1.35V to ±8V)
Extremely low input bias current: 1pA typ
Extremely low input offset currents: 1pA typ
Input common-mode voltage range includes
GND
High input impedance: 10
12
Ω
typ
Fast response time: 2μs typ for 5mV overdrive
Pin-to-pin and functionally compatible with
bipolar LM393
N
DIP8
(Plastic package)
D
SO8
(Plastic micropackage)
Description
The TS3702 is a micropower CMOS dual voltage
comparator with extremely low consumption of
9μA typ / comparator (20 times less than bipolar
LM393). The push-pull CMOS output stage allows
power and space saving by eliminating the
external pull-up resistor required by usual open-
collector output comparators.
Thus response times remain similar to the LM393.
P
TSSOP8
(Thin shrink small outline package)
Pin connections
(Top view)
Output 1
Inverting Input 1
Non-inverting Input 1
V
CC
-
1
2
3
4
-
+
-
+
8
7
6
5
V
CC
+
Output 2
Inverting Input 2
Non-inverting Input 2
February 2007
Rev 3
1/11
www.st.com
11
Schematic diagram
TS3702
1
Schematic diagram
Figure 1.
Schematic diagram (for 1/2 TS3702)
V
CC
+
T
10
T
1
T
2
T
9
T
17
R
1
Input -
T
3
T
4
T
11
T
12
Input +
T
18
T
21
Output
T
13
T
8
T
19
T
20
T
5
T
6
T
7
T
14
T
15
T
16
V
CC
-
2/11
TS3702
Absolute maximum ratings and operating conditions
2
Absolute maximum ratings and operating conditions
Table 1.
Symbol
V
CC+
V
id
V
i
V
o
I
o
I
F
Supply voltage
(1)
Differential input voltage
(2)
Input voltage
(3)
Output voltage
Output current
Forward current in ESD protection diodes on input
(4)
Power dissipation
(5)
DIP8
SO8
TSSOP8
Storage temperature range
HBM: human body model
(6)
ESD
MM: machine model
(7)
CDM: charged device model
(8)
Absolute maximum ratings
Parameter
Value
18
±18
18
18
20
50
1250
710
625
-65 to +150
400
50
1.5
Unit
V
V
V
V
mA
mA
p
d
mW
T
stg
°C
V
V
kV
1. All voltage values, except differential voltage, are with respect to network ground terminal.
2. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal.
3. The magnitude of the input and the output voltages must never exceed the magnitude of the positive and
negative supply voltages.
4. Guaranteed by design.
5. P
d
is calculated with T
amb
= +25°C, T
j
= +150°C and
R
thja
= 100°C/W for DIP8 package
R
thja
= 175°C/W for SO8 package
R
thja
= 200°C/W for TSSOP8 package
6. Human body model: A 100pF capacitor is charged to the specified voltage, then discharged through a
1.5kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations
while the other pins are floating.
7. Machine model: A 200pF capacitor is charged to the specified voltage, then discharged directly between
two pins of the device with no external series resistor (internal resistor < 5Ω). This is done for all couples of
connected pin combinations while the other pins are floating.
8. Charged device model: all pins and the package are charged together to the specified voltage and then
discharged directly to the ground through only one pin. This is done for all pins.
Table 2.
Symbol
+
Operating conditions
Parameter
Supply voltage
TS3702C, TS3702I
TS3702M
Common mode input voltage range
Operating free-air temperature range
TS3702C
TS3702I
TS3702M
Value
Unit
V
CC
2.7 to 16
4 to 16
0 to V
CC+
-1.5
0 to +70
-40 to +125
-55 to +125
V
V
V
icm
T
oper
°C
3/11
Electrical characteristics
TS3702
3
Electrical characteristics
Table 3.
Symbol
V
CC+
= 3V, V
cc-
= 0V, T
amb
= 25°C (unless otherwise specified)
Parameter
Input offset voltage
(1)
V
ic
= 1.5V
T
min
≤
T
amb
≤
T
max
Input offset current
(2)
V
ic
= 1.5V
T
min
≤
T
amb
≤
T
max
Input bias current
(2)
V
ic
= 1.5V
T
min
≤
T
amb
≤
T
max
Input common mode voltage range
T
min
≤
T
amb
≤
T
max
Common-mode rejection ratio
V
ic
= V
icm min
Supply voltage rejection ratio
V
CC+
= 3V to 5V
High level output voltage
V
id
= 1V, I
OH
= -4mA
T
min
≤
T
amb
≤
T
max
Low level output voltage
V
id
= -1V, I
OL
= 4mA
T
min
≤
T
amb
≤
T
max
.
Supply current (each comparator)
No load - Outputs low
T
min
≤
T
amb
≤
T
max
.
Response time low to high
V
ic
= 0V, f = 10kHz, C
L
= 50pF, overdrive = 5mV
TTL input
Response time high to low
V
ic
= 0V, f = 10kHz, C
L
= 50pF, overdrive = 5mV
TTL input
2
1.8
0
0
1
300
1
600
V
CC+
-1.2
V
CC+
-1.5
80
75
2.4
V
pA
Min.
Typ.
Max.
Unit
V
io
5
6.5
mV
I
io
pA
I
ib
V
icm
CMR
SVR
dB
dB
V
V
OH
V
OL
300
400
575
20
25
mV
I
CC
7
μA
t
PLH
1.5
0.7
2.2
0.15
μs
t
PHL
μs
1. The specified offset voltage is the maximun value required to drive the output up to 2.5V or down to 0.3V.
2. Maximum values include unavoidable inaccuracies of the industrial tests.
4/11
TS3702
Table 4.
Symbol
Electrical characteristics
V
CC+
= 5V, V
cc-
= 0V, T
amb
= 25°C (unless otherwise specified)
Parameter
Input offset voltage
V
ic
= V
icm min
, V
cc+
= 5V to 10V
(1)
T
min
≤
T
amb
≤
T
max
Input offset current
(2)
V
ic
= 2.5V
T
min
≤
T
amb
≤
T
max
Input bias current
(2)
V
ic
= 2.5V
T
min
≤
T
amb
≤
T
max
Input common mode voltage range
T
min
≤
T
amb
≤
T
max
Common-mode rejection ratio
V
ic
= V
icm min
Supply voltage rejection ratio
V
CC+
= +5V to +10V
High level output voltage
V
id
= 1V, I
OH
= -4mA
T
min
≤
T
amb
≤
T
max
Low level output voltage
V
id
= -1V, I
OL
= 4mA
T
min
≤
T
amb
≤
T
max
Supply current (each comparator)
No load - Outputs low
T
min
≤
T
amb
≤
T
max
Response time low to high
V
ic
= 0V, f = 10kHz, C
L
= 50pF, overdrive = 5mV
Overdrive = 10mV
Overdrive = 20mV
Overdrive = 40mV
TTL input
Response time high to low
V
ic
= 0V, f = 10kHz, C
L
= 50pF, overdrive = 5mV
Overdrive = 10mV
Overdrive = 20mV
Overdrive = 40mV
TTL input
Fall time
f = 10kHz, C
L
= 50pF, overdrive 50mV
4.5
4.3
0
0
Min.
Typ.
Max.
Unit
V
io
1.2
5
6.5
mV
I
io
1
300
1
600
V
CC+
-1.2
V
CC+
-1.5
82
90
4.7
pA
I
ib
pA
V
icm
CMR
SVR
V
dB
dB
V
V
OH
V
OL
200
300
375
20
25
mV
I
CC
9
μA
t
PLH
1.5
1.1
0.9
0.7
0.6
2.2
1.6
1.1
0.75
0.17
30
μs
t
PHL
μs
t
f
ns
1. The specified offset voltage is the maximun value required to drive the output up to 4.5V or down to 0.3V.
2. Maximum values include unavoidable inaccuracies of the industrial tests.
5/11
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