TS2901
1-6
2005/04 rev. B
TS2901
Preliminary
Quad Voltage Comparator
Supply Voltage Range 2V to 36V
Quad Channel Comparator
General Description
The TS2901 is quad independent precision voltage comparators capable of single-supply or split-supply operation.
The specifications as low as 2.0 mV make this device an excellent ground level with single-supply operation. Input
offset-voltage selection for many applications in consumer automotive, and It is designed to permit a common mode
range-to- industrial electronics.
The TS2901 is offered in SOP-14 and DIP-14 package.
Features
Output voltage compatible with DTL, ECL, TTL,
MOS and CMOS Logic Levels
Low input bias current -25nA
Low input offset current 5nA
Low input offset voltage 5mV(max)
Input common mode range to ground level
Differential input voltage range equal to power
supply voltage
Ordering Information
Part No.
Operating Temp.
Package
TS2901CD14 DIP-14
TS2901CS14
-40 ~ +85
o
C
SOP-14
Pin Assignment
Schematic (each comparator)
DIP-14
SOP-14
Pin assignment:
1. Output 2 14. Output 3
2. Output 1 13. Output 4
3. Vcc 12. Input D (+)
4. Input 1(-) 11. Input 4(+)
5. Input 1(+) 10. Input 4(-)
6. Input 2 (-) 9. Input 3(+)
7. Input 2(+) 8. Input 3 (-)
TS2901
2-6
2005/04 rev. B
Absolute Maximum Rating
Supply Voltage
Vcc
+36 or 18
V
Differential Input Voltage
V
IDR
36 V
Input Common Mode Voltage Range
Input Current (note 2)
V
ICR
Iin
-0.3 to 36
50
V
mA
Output Short Circuit to Ground
Output Sink Current (note 1)
Isc
Isink
Continuous
20
mA
Power Dissipation @ Ta=25
o
C
Derate above 25
o
C
1/Rja
1.0
8
W
mW/
o
C
Operating Junction Temperature Range
T
J
0 ~ +125
o
C
Storage Temperature Range
T
STG
-65 ~ +150
o
C
Lead Temperature 1.6mm(1/16") from case for 10Sec.
T
LEAD
260
o
C
Electrical Characteristics
(V
CC
= 5V, Ta =25
o
C; unless otherwise specified.)
Characteristics Symbol Test
condition
Min
Typ
Max
Unit
Input Offset Voltage (note 3) Vio
-- 2.0 7.0
mV
Input Offset Current (note 3)
Iio
--
5.0
50
nA
Input Bias Current (note 3, 4)
(output in linear range)
I
IB
--
25 250 nA
Input Common Mode Voltage
Range (note 6)
V
ICR
0
-- V
CC
-1.5
V
Voltage Gain
A
VOL
R
L
15K, Vcc = 15Vdc.
25
100
--
V/mV
Large Signal Response Time
--
Vin = TTL Logic Swing.
Vref = 1.4Vdc, VRL = 5Vdc.
RL= 5.1K
-- 300 -- nS
Response Time (note 6)
t
TLH
VRL = 5Vdc, RK = 5.1K
-- 1.3 -- uS
Output Sink Current
I
SINK
Vin-
1Vdc, Vin+=0Vdc,
V
O-
15 Vdc
6.0 16 -- mA
Output Saturation Voltage
V
OL
Vin-
1Vdc, Vin+=0,
I
SINK
4mA,
-- 250 400
mV
Output Leakage Current
I
OL
Vin-=0V,
Vin+
1Vdc,
Vo=5Vdc
-- 0.1 -- nA
Input Offset Voltage (note 3)
Vio
T
LOW
Ta
T
HIGH
--
9.0
15
mV
Input Offset Current (note 3)
Iio
T
LOW
Ta
T
HIGH
--
50
200
nA
Input Bias Current (note 3, 4)
(output in linear range)
I
IB
T
LOW
Ta
T
HIGH
--
200
500
nA
Input Common Mode Voltage
Range (note 6)
V
ICR
T
LOW
Ta
T
HIGH
0
--
V
CC
-2.0
V
Output Saturation Voltage
V
OL
Vin-
1Vdc, Vin+=0,
I
SINK
4mA, T
LOW
Ta
T
HIGH
-- 400 700
mV
Output Leakage Current
I
OL
Vin-=0V,
Vin+
1Vdc, Vo=30V
--
--
1.0
nA
Input Differential Voltage
V
ID
All
Vin
0Vdc,T
LOW
TaT
HIGH
-- -- V
CC
V
Supply Current
I
cc
R
L
=
(for all comparators)
--
0.8
2.0
mA
TS2901
3-6
2005/04 rev. B
Electrical Characteristics (Continues)
Note 1. The maximum output current may be as high as 20mA, independent of the magnitude of V
CC
Output short
circuits to V
CC
can cause excessive heating and eventual destruction.
Note 2. This magnitude of input current will only occur if the leads are driven more negative than ground or the
negative supply voltage. This is due to the input PNP collector base junction become forward biased, acting as
an input clamp diode. There is also a lateral PNP parasitic transistor action which can cause the output voltage
of the comparators to go to the V
CC
voltage level (or ground if overdrive is large) during the time that an input is
driven negative. This will not destroy the device when limited to the max rating and normal output states will
recover when the inputs become
ground or negative supply.
Note 3. At the output switch point, V
O
=1.4Vdc, R
S
100, 5.0Vdc V
CC
30Vdc, with the inputs over the full
common-mode range (0Vdc to V
CC
-1.5Vdc).
Note 4. The bias current flows out of the inputs due to the PNP input stage. This current is virtually constant,
independent of the output state.
Note 5. The response time specified is for a 100mV input step with 5mV overdrive For larger signals, 300ns is typical.
Note 6. Positive excursions of input voltage may exceed the power supply level. As long as one of the inputs remain
within the common-mode range, the comparator will provide the proper output state.
Note 7. The comparator will inhibit proper output state if one of the inputs is become greater than V
CC,
the other input
must remain within the common mode range. The low input state must not be less than -0.3volts of ground of
minus supply.
TS2901
4-6
2005/04 rev. B
Applications Information
This quad comparator feature high gain, wide bandwidth characteristics. This gives the device oscillation tendencies
if the outputs are capacitive coupled to the inputs via stray capacitance. This oscillation manifests itself during output
transitions (V
OL
to V
OH
). To alleviate this situation input resistors<10K
should be used. The addition of positive
feedback (<10 mV) is also recommended.
It is good design practice to ground all unused pins. Differential input voltages may be larger than supply voltage
without damaging the comparator's inputs. Voltages more negative than -0.3V should not be used.
Electrical Characteristics Curve
TS2901
5-6
2005/04 rev. B
Circuit Description
TS2901
6-6
2005/04 rev. B
SOP-14 Mechanical Drawing
C
K
P
A
D
1
G
7
14
8
B
R
M
F
SOP-14 DIMENSION
MILLIMETERS INCHES
DIM
MIN MAX MIN MAX
A 8.55 8.75 0.337 0.344
B 3.80 4.00 0.150 0.157
C 1.35 1.75 0.054 0.068
D 0.35 0.49 0.014 0.019
F 0.40 1.25 0.016 0.049
G
1.27 (typ)
0.05 (typ)
K 0.10 0.25 0.004 0.009
M 0
o
7
o
0
o
7
o
P 5.80 6.20 0.229 0.244
R 0.25 0.50 0.010 0.019
DIP-14 Mechanical Drawing
G
K
D
C
A
1
14
B
7
8
L
M
J
DIP-14 DIMENSION
MILLIMETERS INCHES
DIM
MIN MAX MIN MAX
A 18.55 19.56 0.730 0.770
B 6.22 6.48 0.245 0.255
C 3.18 4.45 0.125 0.135
D 0.35 0.55 0.019 0.020
G
2.54 (typ)
0.10 (typ)
J 0.29 0.31 0.011 0.012
K 3.25 3.35 0.128 0.132
L 7.75 8.00 0.305 0.315
M - 10
o
- 10
o
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