LM2903PT [STMICROELECTRONICS]
LOW POWER DUAL VOLTAGE COMPARATORS; 低功耗双电压比较器
| 型号： | LM2903PT |
| 厂家： | 
ST |
| 描述： | LOW POWER DUAL VOLTAGE COMPARATORS |
| 文件： | 总9页 (文件大小：631K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LM2903
LOW POWER DUAL VOLTAGE COMPARATORS
■ WIDE SINGLE SUPPLY VOLTAGE RANGE
OR DUAL SUPPLIES +2V TO +36V OR ±1V
TO ±18V
■ VERY LOW SUPPLY CURRENT (0.4mA)
INDEPENDENT OF SUPPLY VOLTAGE
(1mW/comparator at +5V)
■ LOW INPUT BIAS CURRENT: 25nA TYP
■ LOW INPUT OFFSET CURRENT: ±5nA TYP
N
DIP8
(Plastic Package)
■ INPUT COMMON-MODE VOLTAGE RANGE
INCLUDES GROUND
■ LOW OUTPUT SATURATION VOLTAGE:
250mV TYP. (I = 4mA)
O
■ DIFFERENTIAL INPUT VOLTAGE RANGE
D
SO8
EQUAL TO THE SUPPLY VOLTAGE
(Plastic Micropackage)
■ TTL, DTL, ECL, MOS, CMOS COMPATIBLE
OUTPUTS
DESCRIPTION
This device consists of two independent low
power voltage comparators designed specifically
to operate from a single supply over a wide range
of voltages. Operation from split power supplies is
also possible.
P
TSSOP8
(Thin Shrink Small Outline Package)
These comparators also have
a
unique
PIN CONNECTIONS (top view)
characteristic in that the input common-mode
voltage range includes ground even though
operated from a single power supply voltage.
ORDER CODE
Package
Part
Number
Temperature
Range
N
D
P
LM2903
-40°C, +125°C
•
•
•
N = Dual in Line Package (DIP)
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
P = Thin Shrink Small Outline Package (TSSOP) - only available
in Tape & Reel (PT)
June 2003
1/9
LM2903
SCHEMATIC DIAGRAM (1/2 LM2903)
VCC+
3.5µA
100µA
3.5µA
100µA
Non-Inverting
Input
Vo
VCC-
VCC-
Inverting
Input
VCC-
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
Supply Voltage
±18 to 36
±36
V
V
V
CC
V
Differential Input Voltage
Input Voltage
ID
V
-0.3 to +36
Infinite
I
1)
Output Short-circuit to Ground
2)
1250
710
625
Power Dissipation
DIP8
SO8
TSSOP8
P
mW
d
T
Junction Temperature
+150
°C
°C
Junction
T
Storage Temperature Range
-65 to +150
stg
1.
2.
Short-circuit from the output to Vcc+ can cause excessive heating and eventual destruction. The maximum output current is approximately 20mA,
independent of the magnitude of Vcc
+
Pd is calculated with T
= +25°C, T = +150°C and R
= 100°C/W for DIP8 package
= 175°C/W for SO8 package
= 200°C/W for TSSOP8 package
amb
j
thja
OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
+
Vicm
Common Mode Input Voltage Range
Operating Free-Air Temperature range
V
0 to VCC -1.5
Toper
-40 to +125
°C
2/9
LM2903
ELECTRICAL CHARACTERISTICS
+
-
V
= 5V, V = GND, Tamb = 25°C (unless otherwise specified)
cc
CC
Symbol
Parameter
Min.
Typ.
Max.
Unit
1)
Input Offset Voltage
VIO
T
T
= +25°C
1
7
15
mV
amb
min
≤ T
≤ T
.
amb max
Input Offset Current
T
T
= +25°C
IIO
5
50
150
nA
nA
amb
min
≤ T
≤ T
amb
max.
max.
2)
Input Bias Current
I
T
T
= +25°C
25
250
400
IB
amb
min
≤ T
≤ T
amb
A
Large Signal Voltage Gain (V = 15V,R =15kΩ, V =1 to 11V)
25
200
V/mV
mA
VD
cc
L
o
Supply Current (all comparators)
V
CC = 5V, no load
I
0.4
1
1
2.5
CC
VCC = 30V, no load
3)
Input Common Mode Voltage Range (V = 30V)
cc
+
V
VCC -1.5
0
0
V
V
T
T
= +25°C
ICM
amb
min
+
VCC -2
≤ T
≤ T
max.
amb
+
4)
V
VCC
Differential Input Voltage
Low Level Output Voltage (V = -1V, Isink = 4mA)
ID
id
V
T
T
= +25°C
250
0.1
400
700
mV
OL
amb
min
≤ T
≤ T
amb max
High Level Output Current (VCC =Vo =30V, Vid = 1V)
T
T
= +25°C
I
nA
µA
amb
min
OH
1
≤ T
≤ T
max
amb
I
Output Sink Current (V = -1V,V = 1.5V)
id o
6
16
mΑ
µs
SINK
5)
+
t
1.3
Small Signal Response Time (R = 5.1kΩ to V
)
CC
RE
L
6)
Large Signal Response Time
+
TTL Input (V = +1.4 V, R =5.1kΩ to VCC
)
ref
L
t
REL
Output Signal at 50% of final value
500
1
ns
µs
Output Signal at 95 % of final value
1.
2.
At output switch point, V ≈ 1.4V, R = 0Ω with V + from 5V to 30V, and over the full input common-mode range (0V to V + –1.5V).
O
S
CC
CC
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 no loading charge exists on the reference of input lines
3.
The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V. The upper end of the
common-mode voltage range is V + –1.5V, but either or both inputs can go to +30V without damage.
CC
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 –0.3V (or 0.3V below the negative power supply, if used)
5.
6.
The response time specified is for a 100mV input step with 5mV overdrive.
Maximum values are guaranteed by design & evaluation.
3/9
LM2903
SUPPLY CURRENT versus SUPPLY VOLTAGE
RESPONSE TIME FOR VARIOUS INPUT
OVERDRIVES - NEGATIVE TRANSITION
RESPONSE TIME FOR VARIOUS INPUT
OVERDRIVES - POSITIVE TRANSITION
INPUT CURRENT versus SUPPLY VOLTAGE
OUTPUT SATURATION VOLTAGE versus
OUTPUT CURRENT
4/9
LM2903
TYPICAL APPLICATIONS
BASIC COMPARATOR
LOW FREQUENCY OP AMP
LOW FREQUENCY OP AMP
TRANSDUCER AMPLIFIER
DRIVING CMOS
DRIVING TTL
5/9
LM2903
LOW FREQUENCY OP AMP WITH OFFSET
ADJUST
ZERO CROSSING DETECTOR
(single power supply)
TWO-DECADE HIGH-FREQUENCY VCO
LIMIT COMPARATOR
CRYSTAL CONTROLLED OSCILLATOR
SPLIT-SUPPLY APPLICATIONS
ZERO CROSSING DETECTOR
COMPARATOR WITH A NEGATIVE
REFERENCE
6/9
LM2903
PACKAGE MECHANICAL DATA
Plastic DIP-8 MECHANICAL DATA
mm.
inch
TYP.
0.130
DIM.
MIN.
TYP
MAX.
MIN.
MAX.
A
3.3
a1
B
0.7
1.39
0.91
0.028
0.055
0.036
1.65
1.04
0.065
0.041
B1
b
0.5
0.020
b1
D
E
0.38
0.5
9.8
0.015
0.020
0.386
8.8
0.346
0.100
0.300
0.300
e
2.54
7.62
7.62
e3
e4
F
7.1
4.8
0.280
0.189
I
L
3.3
0.130
Z
0.44
1.6
0.017
0.063
P001F
7/9
LM2903
PACKAGE MECHANICAL DATA
SO-8 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
TYP
MAX.
MIN.
MAX.
A
A1
A2
B
1.35
0.10
1.10
0.33
0.19
4.80
3.80
1.75
0.053
0.069
0.25
1.65
0.51
0.25
5.00
4.00
0.04
0.010
0.065
0.020
0.010
0.197
0.157
0.043
0.013
0.007
0.189
0.150
C
D
E
e
1.27
0.050
H
5.80
0.25
0.40
6.20
0.50
1.27
0.228
0.010
0.016
0.244
0.020
0.050
h
L
k
˚ (max.)
8
ddd
0.1
0.04
0016023/C
8/9
LM2903
PACKAGE MECHANICAL DATA
TSSOP8 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
TYP
MAX.
1.2
MIN.
MAX.
0.047
0.006
0.041
0.012
0.008
0.122
0.260
0.177
A
A1
A2
b
0.05
0.80
0.19
0.09
2.90
6.20
4.30
0.15
1.05
0.30
0.20
3.10
6.60
4.50
0.002
0.031
0.007
0.004
0.114
0.244
0.169
1.00
0.039
c
D
3.00
6.40
4.40
0.65
0.118
0.252
0.173
0.0256
E
E1
e
K
0˚
8˚
0˚
8˚
L
0.45
0.60
1
0.75
0.018
0.024
0.039
0.030
L1
0079397/D
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
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9/9
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