Datasheet LM2903WDT Specification

Page 1
Features
D
SO-8
(Plastic micropackage)
Pin connections (top view)
1 - Output 1 2 - Inverting input 1 3 - Non-inverting input 1 4 - V
CC
-
5 - Non-inverting input 2 6 - Inverting input 2 7 - Output 2 8 - V
CC
+
P
TSSOP8
(Thin shrink small outline package)
Wide, single supply voltage range or dual
Very low supply current (0.4 mA) independent
of supply voltage (1 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. (I
Differential input voltage range equal to the
= 4 mA)
O
supply voltage
TTL, DTL, ECL, MOS, CMOS compatible
outputs
ESD internal protection: 2 kV
Description
LM2903W
Low-power, dual-voltage comparator
Datasheet − production data
This device consists of two independent low­power voltage comparators designed specifically to operate from a single supply over a wide range of voltages. Operation from split power supplies is also possible.
The input common-mode voltage range includes negative rail even though operated from a single power supply voltage.
All pins are protected against electrostatic discharge up to 2
kV. Consequently, the input voltages must not exceed the V magnitudes.
November 2012 Doc ID 022662 Rev 2 1/15
This is information on a product in full production.
CC
+
or V
CC
-
www.st.com
15
Page 2
Contents LM2903W
Contents
1 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 4
3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Typical application schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.1 SO-8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.2 TSSOP8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2/15 Doc ID 022662 Rev 2
Page 3
LM2903W Schematic diagram
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1 Schematic diagram

Figure 1. Schematic diagram (1/2 LM2903W)

Doc ID 022662 Rev 2 3/15
Page 4
Absolute maximum ratings and operating conditions LM2903W

2 Absolute maximum ratings and operating conditions

Table 1. Absolute maximum ratings

Symbol Parameter Value Unit
V
CC
V
id
V
in
V
out
R
thja
R
thjc
T
j
T
stg
ESD
1. Short-circuits from the output to V maximum output current is approximately 20 mA and is independent of the V
2. Short-circuits can cause excessive heating and destructive dissipation. Values are typical and for a four­layer PCB.
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

Supply voltage ±18 or 36 V
Differential input voltage
Input voltage
V
CC
-
-0.3 to V
+
+0.3 V
CC
Output voltage 36 V
Output short-circuit to ground
Thermal resistance junction to ambient
SO-8 TSSOP8
Thermal resistance junction to case
SO-8 TSSOP8
(1)
(2)
(2)
Infinite
125 120
40 37
°C/W
°C/W
Maximum junction temperature +150 °C
Storage temperature range -65 to +150 °C
Human body model (HBM)
Machine model (MM)
(4)
CDM: charged device model
+
can cause excessive heating and possible destruction. The
CC
(3)
(5)
2000 V
200 V
1500 V
+
magnitude.
CC
Symbol Parameter Value Unit
V
T
icm
oper
Common mode input voltage range T
≤ T
amb
≤ T
max
min
Operating free-air temperature range -40 to +125 °C
4/15 Doc ID 022662 Rev 2
0 to V
0 to V
CC
CC
+
-1.5
+
-2
V
Page 5
LM2903W Electrical characteristics

3 Electrical characteristics

Table 3. V
CC
+
= 5 V, V
Symbol Parameter Test conditions Min. Typ. Max. Unit
-
= GND, T
CC
= 25°C (unless otherwise specified)
amb
17
15
550
150
25 250
400
0.4 1
V
1
2.5
CC
+
250 400
700
0.1
1
1.3 µs
5001ns
(2)
(1)
T
≤ T
min
T
≤ T
min
T
≤ T
min
V
= 5 V, no load
CC
VCC = 30 V, no load
(3)
V
= -1 V, I
id
≤ T
T
min
V
= Vo = 30 V, Vid = 1 V
CC
≤ T
T
min
(4)
RL = 5.1 kΩ to V
V
= +1.4 V, RL = 5.1 kΩ to V
(5)
ref
Output signal at 50 % of final value Output signal at 95 % of final value
CC
≤ T
amb
max
≤ T
amb
max
≤ T
amb
max
= 4 mA
sink
≤ T
amb
max
≤ T
amb
max
+
CC
+
CC
+
from 5 V to 30 V, and over the full input common-mode range
V
Input offset voltage
io
I
Input offset current
io
I
Input bias current
ib
Large signal voltage gain VCC = 15 V, RL = 15 kΩ, Vo = 1 to 11 V 25 200 V/mV
A
vd
I
Supply current (all comparators)
CC
V
Differential input voltage
id
V
I
1. At output switch point, VO 1.4 V, RS = 0 Ω with V
2. The direction of the input current is from the IC due to the PNP input stage. This current is essentially constant,
3. Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the
4. The response time specified is for a 100 mV input step with 5 mV overdrive.
5. Maximum values are guaranteed by design and evaluation.
Low level output voltage
OL
I
High level output current
OH
Output sink current Vid = -1 V, Vo = 1.5 V 6 16 mA
sink
t
Small signal response time
res
Large signal response time
t
rel
TTL input
(0 V to V
independent of the state of the output, so no loading charge exists on the reference of input lines.
common-mode range, the comparator provides 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).
CC
+
–1.5 V).
mV
nA
nA
mA
V
mV
nA µA
µs
Doc ID 022662 Rev 2 5/15
Page 6
Electrical characteristics LM2903W
Figure 2. Supply current vs. supply voltage Figure 3. Input current vs. supply voltage
Figure 4. Output saturation voltage vs.
output current
Figure 5. Response time for various input
overdrives - negative transition
Figure 6. Response time for various input
overdrives - positive transition
6/15 Doc ID 022662 Rev 2
Page 7
LM2903W Typical application schematics
5 V
100 kΩ
&
1/ 2
LM2903
+V
(ref)
-V
(ref)
5 V
10 kΩ
+V
(ref)
&
&
1/ 2
LM2903
-V
(ref)
5 V
15 kΩ
0.5 μF
100 kΩ
1 kΩ
~
2N 2222
(eo = 0 V for el = 0 V)
1/ 2
LM2903
e
o
e
l
AV = 100

4 Typical application schematics

Figure 7. Basic comparator Figure 8. Driving CMOS
V
= 5 V
CC
15 kΩ
+V
-V
(ref)
(ref)
1/2
LM2903
V
O

Figure 9. Driving TTL Figure 10. Low frequency op-amp

5 V
15 k
1/2
~
e
LM2903
l
Ω
e
o
100 kΩ
1 kΩ
AV = 100

Figure 11. Low frequency op-amp Figure 12. Transducer amplifier

Magnetic pick-up
10 kΩ
Doc ID 022662 Rev 2 7/15
10 kΩ
1/ 2
LM2903
20 MΩ
5 V
0.5 μF
3 kΩ
e
o
Page 8
Typical application schematics LM2903W
e
l
~
2N 2222
5 V
e
o
R1
100 kΩ
1 kΩ
5 V
1 MΩ
100 kΩ
1 MΩ
Offset adjust
R
S
R
1
15 kΩ
0.5μF
R
2
1/ 2
LM2903
100 kΩ
10 kΩ
e
l
20 MΩ
5 V
1N4148
5.1 kΩ
5.1 kΩ
100 kΩ
1/ 2
LM2903
5.1 kΩ
10 kΩ
e
I
~
R
S
2R
S
V
(ref)
high
V
(ref)
low
2N 2222
V
CC
Lamp
1/ 2
LM2903
1/2
LM2903
2R
S
(12 V)
15 V
5.1 kΩ
e
o
e
I
~
15 V
1/2
LM2903
Figure 13. Low frequency op- amp with offset
adjust
Figure 14. Zero crossing detector (single
power supply)

Figure 15. Limit comparator Figure 16. Split-supply applications - zero

crossing detector

Figure 17. Crystal controlled oscillator Figure 18. Comparator with a negative

reference
V
= 15 V
CC
15 V
200 kΩ
100 kΩ
1/2
LM2903
f = 100 kHz
0.1 μF
200 kΩ
8/15 Doc ID 022662 Rev 2
2 kΩ
V
CC
0
e
o
e
~
I
1/2
LM2903
5.1 kΩ
e
o
5 V
15 V
Page 9
LM2903W Typical application schematics
V
CC
0
V
(ref.)
10 kΩ
1/2
15 kΩ
200 k
Ω
3 kΩ
3 k
Ω
3 k
Ω
10 MΩ
V
O2
V
03
O1
V
51 kΩ
V
1
V
2
0.001μF
V
C1
V
3
V
CC
V
C1
V
1
V
2
V
3
0
0
1
t
t
3
t
4
t
2
t
t
V
CC
t0t
1
V
CC
V
CC
V
C C
=+15V
1/2
LM2903
1/2
1/2
10 kΩ
10 kΩ
10 kΩ
10 kΩ
10 MΩ
10 MΩ
51 kΩ
51 kΩ
t
2
t
o
t
3
t
o
t
A
t
o
Input gating signal
LM2903
LM2903
LM2903
V
CC
V
CC
100 kΩ
3 kΩ
5.1 kΩ
/2
V
CC
/2
0.01 μF
500 pF
100 kΩ
0.1 μF
20 kΩ
50 kΩ
=+30V
+250 mV
V
control
+50 V
700 Hz f 100 kHz
o
20 kΩ
3 kΩ
1/ 2
LM2903
1/ 2
LM2903
1/ 2
LM2903
Output 1
Output 2
V
CC
V
CC
Frequency control
voltage input
Vcontrol
10 kΩ

Figure 19. Time delay generator

Figure 20. Two-decade high-frequency VCO

Doc ID 022662 Rev 2 9/15
Page 10
Package information LM2903W

5 Package information

In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK specifications, grade definitions and product status are available at: ECOPACK® is an ST trademark.
®
packages, depending on their level of environmental compliance. ECOPACK®
www.st.com.
10/15 Doc ID 022662 Rev 2
Page 11
LM2903W Package information

5.1 SO-8 package information

Figure 21. SO-8 package mechanical drawing

Table 4. SO-8 package mechanical data

Dimensions
Ref.
Min. Typ. Max. Min. Typ. Max.
A1.750.069
A1 0.10 0.25 0.004 0.010
A2 1.25 0.049
b 0.28 0.48 0.011 0.019
c 0.17 0.23 0.007 0.010
D 4.80 4.90 5.00 0.189 0.193 0.197
E 5.80 6.00 6.20 0.228 0.236 0.244
E1 3.80 3.90 4.00 0.150 0.154 0.157
e 1.27 0.050
h 0.25 0.50 0.010 0.020
L 0.40 1.27 0.016 0.050
L1 1.04 0.040
k1° 8°1° 8°
ccc 0.10 0.004
Millimeters Inches
Doc ID 022662 Rev 2 11/15
Page 12
Package information LM2903W

5.2 TSSOP8 package information

Figure 22. TSSOP8 package mechanical drawing

Table 5. TSSOP8 package mechanical data

Dimensions
Ref.
Min. Typ. Max. Min. Typ. Max.
A1.200.047
A1 0.05 0.15 0.002 0.006
A2 0.80 1.00 1.05 0.031 0.039 0.041
b 0.19 0.30 0.007 0.012
c 0.09 0.20 0.004 0.008
D 2.90 3.00 3.10 0.114 0.118 0.122
E 6.20 6.40 6.60 0.244 0.252 0.260
E1 4.30 4.40 4.50 0.169 0.173 0.177
e 0.65 0.026
k0° 8°0° 8°
L 0.45 0.60 0.75 0.018 0.024 0.030
L1 1 0.039
aaa 0.10 0.004
Millimeters Inches
12/15 Doc ID 022662 Rev 2
Page 13
LM2903W Ordering information

6 Ordering information

Table 6. Order codes

Order code
LM2903WDT
LM2903WYDT
(1)
Temperature
range
-40°C to +125°C
Package Packing Marking
SO-8
SO-8
(Automotive grade)
Tape & reel
LM2903WPT TSSOP8 2903W
LM2903WYPT
1. Qualified and characterized according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 and Q 002 or equivalent.
(1)
TSSOP8
(Automotive grade)
2903W
2903WY
903WY
Doc ID 022662 Rev 2 13/15
Page 14
Revision history LM2903W

7 Revision history

Table 7. Document revision history

Date Revision Changes
18-Jan-2012 1 Initial release.
Added TSSOP8 package
05-Nov-2012 2
Modified note 2 in Table 1: Absolute maximum ratings Modified note1 in Table 6: Order codes
14/15 Doc ID 022662 Rev 2
Page 15
LM2903W
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Doc ID 022662 Rev 2 15/15
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