Technical Data Sheet

LM2901
Low-power quad voltage comparator
Features
■
Wide single supply voltage range or dual
supplies for all devices: +2 V to +36 V or ±1 V
to ±18 V
■
Very low supply current (1.1 mA) independent
of supply voltage (1.4 mW/comparator at +5 V)
■
Low input bias current: 25 nA typ.
■
Low input offset current: ±5 nA typ.
■
Input common-mode voltage range includes
negative rail
■
Low output saturation voltage:
250 mV typ. (IO = 4 mA)
■
Differential input voltage range equal to the
supply voltage
■
TTL, DTL, ECL, MOS, CMOS compatible
outputs
N
DIP14
(Plastic package)
D
SO-14
(Plastic micropackage)
P
TSSOP14
(Thin shrink small outline package)
Description
This device consists of four independent precision
voltage comparators, which are designed
specifically to operate from a single supply over a
wide range of voltages. Operation from split
power supplies is also possible.
These comparators also have a unique
characteristic in that the input common-mode
voltage range includes the negative rail even
though operated from a single power supply
voltage.
February 2012
Doc ID 2468 Rev 7
Q4
QFN16 3x3
(Plastic micropackage)
1/17
www.st.com
17
Pin connection and schematic diagram
1
LM2901
Pin connection and schematic diagram
Figure 1.
Pin connections (top view)
Output 2 1
14
Output 1 2
13 O u tput 4
VCC+
Figure 2.
3
O u tput 3
12
VC C -
Inverting input 1
4
11
Non-inverting input 4
Non-inverting input 1
5
10
Inverting input 4
Inverting input 2
6
9
Non-inverting input 3
Non-inverting input 2
7
8
Inverting input 3
Schematic diagram
VCC
3.5 μ A
100 μA
3.5 μ A
100 μ A
Non-inverting
input
VO
Inverting
input
VCC
2/17
Doc ID 2468 Rev 7
LM2901
2
Absolute maximum ratings and operating conditions
Absolute maximum ratings and operating conditions
Table 1.
Absolute maximum ratings
Symbol
Parameter
VCC
Supply voltage
Vid
Differential input voltage
Vin
Input voltage
Value
Unit
±18 to 36
V
±36
V
-0.3 to +36
V
Output short-circuit to ground (1)
Thermal resistance junction to ambient(2)
Rthja
80
105
100
45
DIP14
SO-14
TSSOP14
QFN16 3x3
°C/W
Thermal resistance junction to case(2)
Rthjc
Tj
Tstg
33
31
32
14
DIP14
SO-14
TSSOP14
QFN16 3x3
Maximum junction temperature
Storage temperature range
HBM: human body
ESD
model(3)
(4)
MM: machine model
CDM: charged device
model(5)
+150
°C
-65 to +150
°C
500
V
100
V
1500
V
1. Short-circuits from the output to VCC+ can cause excessive heating and eventual destruction. The
maximum output current is approximately 20 mA, independent of the magnitude of VCC+.
2. Short-circuits can cause excessive heating. Destructive dissipation can result from simultaneous shortcircuits on all amplifiers. All values are typical.
3. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a
1.5 kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations
while the other pins are floating.
4. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between
two pins of the device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of
connected pin combinations while the other pins are floating.
5. 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.
Operating conditions
Symbol
VCC
Vicm
Toper
Parameter
Supply voltage
Common mode input voltage range
Tmin ≤ Tamb ≤ Tmax
Operating free-air temperature range
Doc ID 2468 Rev 7
Value
Unit
2 to 32
±1 to ±16
V
0 to (VCC+ -1.5)
0 to (VCC+ -2)
V
-40 to +125
°C
3/17
Electrical characteristics
3
LM2901
Electrical characteristics
Table 3.
Symbol
Vio
Iio
Iib
Avd
Electrical characteristics at VCC+ = 5 V, VCC- = GND, Tamb = 25° C
(unless otherwise specified)
Parameter
Min.
Input offset voltage (1)
Typ.
Max.
Unit
1
7
15
mV
5
50
150
nA
25
250
400
nA
Tmin ≤ Tamb ≤ Tmax
Input offset current
Tmin ≤ Tamb ≤ Tmax
Input bias current (II+ or II-) (2)
Tmin ≤ Tamb ≤ Tmax
Large signal voltage gain
(VCC = 15 V, RL = 15 kΩ, Vo = 1 to 11 V)
25
200
V/mV
Supply current (all comparators)
ICC
VCC = +5 V, no load
VCC = +30 V, no load
Vid
Differential input voltage(3)
VOL
Low level output voltage
Vid = -1V, Isink = 4 mA
1.1
1.3
250
Tmin ≤ Tamb ≤ Tmax
IOH
High level output current
(VCC = Vo = 30 V, Vid = 1 V)
tres
trel
1.
VCC+
V
400
700
mV
1
Output sink current (Vid = -1 V,Vo = 1.5 V)
Small signal response
mA
0.1
Tmin ≤ Tamb ≤ Tmax
Isink
2
2.5
6
time(4)
(RL = 5.1 kΩ connected to VCC+)
Large signal response time(5)
TTL input (Vref = +1.4 V, RL = 5.1 kΩ to
VCC+)
Output signal at 50% of final value
Output signal at 95% of final value
nA
µA
16
mA
1.3
µs
500
1
ns
µs
At output switch point, VO ≈ 1.4 V, RS = 0 with VCC+ from 5 V to 30 V, and over the full input commonmode range (0 V to VCC+ –1.5 V).
2. The direction of the input current is out of the IC due to the PNP input stage. This current is essentially
constant, independent of the state of the output, so there is no loading charge on the reference of input
lines.
3. The response time specified is for a 100 mV input step with 5 mV overdrive.
4. Positive excursions of input voltage may exceed the power supply 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 (or 0.3 V below the negative power supply, if used).
5. Maximum values are guaranteed by design.
4/17
Doc ID 2468 Rev 7
LM2901
Electrical characteristics
Figure 3.
Supply current vs. supply voltage
Figure 4.
Input current vs. supply voltage
Figure 5.
Output saturation voltage vs.
output current
Figure 6.
Response time for various input
overdrives - negative transition
Figure 7.
Response time for various input
overdrives - positive transition
Doc ID 2468 Rev 7
5/17
Typical application schematics
LM2901
4
Typical application schematics
Figure 8.
Basic comparator
Figure 9.
Driving CMOS
5V
VCC = 5 V
100 kΩ
15 kΩ
+V(ref)
+V(ref)
1/4
LM2901
VO
-V(ref)
Figure 10. Driving TTL
1/ 4
LM2901
&
-V(ref)
Figure 11. Low frequency op-amp
5V
5V
15 kΩ
10 kΩ
1/4
LM2901
+V(ref)
~
1/ 4
LM2901
el
eo
&
0.5 μF
100 kΩ
-V(ref)
1 kΩ
&
AV = 100
Figure 12. Low frequency op-amp with boost
Figure 13. Transducer amplifier
5V
5V
(eo = 0 V for el = 0 V)
Magnetic pick-up
15 kΩ
1/ 4
LM2901
~
el
2N 2222
10 kΩ
3 kΩ
1/ 4
LM2901
0.5 μF
20 MΩ
100 kΩ
eo
1 kΩ
AV = 100
6/17
Doc ID 2468 Rev 7
10 kΩ
eo
LM2901
Typical application schematics
Figure 14. Low frequency op-amp with
offset adjust
Figure 15. Zero crossing detector (single
power supply)
5V
5V
Offset adjust
100 kΩ
5V
100 kΩ
R2
1 MΩ
RS
1 MΩ
R1
5.1 kΩ
el
15 kΩ
1/ 4
LM2901
el ~
5.1 kΩ
100 kΩ
5.1 kΩ
1/ 4
LM2901
2N 2222
1N4148
0.5 μ F
R1
100 kΩ
1 kΩ
20 MΩ
10 kΩ
eo
Figure 16. Limit comparator
Figure 17. Split-supply applications - zero
crossing detector
VCC
10 kΩ
2RS
V(ref)
high
5.1 kΩ
1/ 4
LM2901
Lamp
RS
eI
15 V
(12 V)
1/4
LM2901
~
eI
2RS
1/ 4
LM139
eo
~
2N 2222
V(ref)
low
15 V
Figure 18. Crystal controlled oscillator
Figure 19. Comparator with a negative
reference
15 V
VCC = 15 V
200 kΩ
2 kΩ
100 kΩ
5.1 kΩ
VCC
0.1 μF
1/ 4
LM2901
0
eo
1/ 4
LM2901
eI ~
eo
f = 100 kHz
5V
200 kΩ
15 V
Doc ID 2468 Rev 7
7/17
Typical application schematics
LM2901
Figure 20. Time delay generator
VC C = +15 V
10 kΩ 15 kΩ
3 kΩ
200 kΩ
10 MΩ
10 kΩ
1/4
LM2901
V3
V03
VCC
to
t3
3 kΩ
10 kΩ
51 kΩ
1/4
LM2901
VCC
0
to
tA
10 MΩ
10 kΩ
VC1
1/4
LM2901
V2
V(ref.)
VO2 VCC
to
t2
0.001 μF
Input gating signal
3 kΩ
VCC
10 MΩ
51 kΩ
1/4
LM2901
V3
VC1 V2
V1
0
t 0 t1 t2 t3
10 kΩ
V
O1
VCC
t0 t1
V1
t
51 kΩ
t4
Figure 21. Two-decade high-frequency VCO
VCC
100 kΩ
Frequency control
voltage input
Vcontrol
500 pF
10 kΩ
100 kΩ
3 kΩ
1/ 4
LM2901
0.01 μF
Output 1
VCC /2
20 kΩ
Output 2
20 kΩ
1/ 4
LM2901
VCC = + 30 V
Vcontrol +50 V
+250 mV
700 Hz
fo 100 kHz
8/17
3 kΩ
5.1 kΩ
1/ 4
LM2901
0.1 μF
50 kΩ
VCC
Doc ID 2468 Rev 7
VCC /2
LM2901
5
Package information
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 2468 Rev 7
9/17
Package information
5.1
LM2901
DIP14 package information
Figure 22. DIP14 package mechanical drawing
Table 4.
DIP14 package mechanical data
Dimensions
Millimeters
Inches
Ref.
Min.
Typ.
A
Min.
Typ.
5.33
Max.
0.21
A1
0.38
0.015
A2
2.92
3.30
4.95
0.11
0.13
0.19
b
0.36
0.46
0.56
0.014
0.018
0.022
b2
1.14
1.52
1.78
0.04
0.06
0.07
c
0.20
0.25
0.36
0.007
0.009
0.01
D
18.67
19.05
19.69
0.73
0.75
0.77
E
7.62
7.87
8.26
0.30
0.31
0.32
E1
6.10
6.35
7.11
0.24
0.25
0.28
e
2.54
0.10
e1
15.24
0.60
eA
7.62
0.30
eB
L
10/17
Max.
10.92
2.92
3.30
3.81
Doc ID 2468 Rev 7
0.43
0.11
0.13
0.15
LM2901
5.2
Package information
QFN16 3 x 3 package information
Figure 23. QFN16 3 x 3 mm package mechanical drawing
Doc ID 2468 Rev 7
11/17
Package information
Table 5.
LM2901
QFN16 3 x 3 mm package mechanical data (pitch 0.5 mm)
Dimensions
Ref.
Millimeters
Inches
Min.
Typ.
Max.
Min.
Typ.
Max.
A
0.80
0.90
1.00
0.031
0.035
0.039
A1
0
0.05
0
A3
0.20
b
0.18
D
2.90
D2
1.50
E
2.90
E2
1.50
e
L
3.00
3.00
0.008
0.30
0.007
3.10
0.114
1.80
0.059
3.10
0.114
1.80
0.059
0.50
0.30
0.012
0.118
0.122
0.071
0.118
0.122
0.071
0.020
0.50
0.012
Figure 24. QFN16 3 x 3 mm footprint recommendation
12/17
0.002
Doc ID 2468 Rev 7
0.020
LM2901
5.3
Package information
SO-14 package information
Figure 25. SO-14 package mechanical drawing
Table 6.
SO-14 package mechanical data
Dimensions
Millimeters
Inches
Ref.
Min.
Typ.
Max.
Min.
Typ.
Max.
A
1.35
1.75
0.05
0.068
A1
0.10
0.25
0.004
0.009
A2
1.10
1.65
0.04
0.06
B
0.33
0.51
0.01
0.02
C
0.19
0.25
0.007
0.009
D
8.55
8.75
0.33
0.34
E
3.80
4.0
0.15
0.15
e
1.27
0.05
H
5.80
6.20
0.22
0.24
h
0.25
0.50
0.009
0.02
L
0.40
1.27
0.015
0.05
k
ddd
8° (max.)
0.10
Doc ID 2468 Rev 7
0.004
13/17
Package information
5.4
LM2901
TSSOP14 package information
Figure 26. TSSOP14 package mechanical drawing
Table 7.
TSSOP14 package mechanical data
Dimensions
Ref.
Millimeters
Min.
Typ.
A
Max.
Min.
Typ.
1.20
A1
0.05
A2
0.80
b
Max.
0.047
0.15
0.002
0.004
0.006
1.05
0.031
0.039
0.041
0.19
0.30
0.007
0.012
c
0.09
0.20
0.004
0.0089
D
4.90
5.00
5.10
0.193
0.197
0.201
E
6.20
6.40
6.60
0.244
0.252
0.260
E1
4.30
4.40
4.50
0.169
0.173
0.176
e
L
k
aaa
1.00
0.65
0.45
L1
14/17
Inches
0.60
0.0256
0.75
0.018
1.00
0°
0.024
0.030
0.039
8°
0.10
Doc ID 2468 Rev 7
0°
8°
0.004
LM2901
6
Ordering information
Ordering information
Table 8.
Order codes
Order code
Temperature
range
Package
Packing
Marking
LM2901N
DIP14
Tube
LM2901N
LM2901D
LM2901DT
SO-14
Tube or tape & reel
LM2901PT
TSSOP14
Tape & reel
QFN16 3x3
Tape & reel
LM2901YDT(1)
SO-14
(Automotive grade)
Tape & reel
LM2901YPT(1)
TSSOP14
(Automotive grade)
Tape & reel
LM2901Q4T
2901
-40°C to +125°C
K5I
2901Y
1. Qualified and characterized according to AEC Q100 and Q003 or equivalent, advanced screening
according to AEC Q001 & Q 002 or equivalent.
Doc ID 2468 Rev 7
15/17
Revision history
7
LM2901
Revision history
Table 9.
16/17
Document revision history
Date
Revision
Changes
01-Jan-2002
1
Initial release.
01-Jul-2005
2
1 - PPAP references inserted in the datasheet see Table : Order
codes on page 1.
2 - ESD protection inserted in Table 1 on page 3.
01-Oct-2005
3
The following changes were made in this revision:
– PPAP part number added in table Order codes on page 1.
– Formatting changes throughout.
18-Jul-2006
4
ESD HBM value corrected in Table 1 on page 3.
19-Dec-2007
5
Added Rthja and Rthjc parameters to Table 1: Absolute maximum
ratings. Added footnotes for ESD parameters.
Removed Vicm parameter from electrical characteristics in Table 3.
Reformatted package information in Section 5.
Added footnotes for automotive grade parts in Table 8: Order codes.
30-Apr-2009
6
Document reformatted.
Updated package information in Chapter 5: Package information.
Removed note 2 under Table 8: Order codes.
06-Feb-2012
7
Added QFN16 3 x 3 package in Chapter 5.
Removed LM2901YD order code from Table 8.
Doc ID 2468 Rev 7
LM2901
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Doc ID 2468 Rev 7
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