Download LM2901

LM2901
LOW POWER QUAD VOLTAGE COMPARATORS
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WIDE SINGLE SUPPLY VOLTAGE RANGE OR
DUAL SUPPLIES FOR ALL DEVICES : +2V TO
+36V OR ±1V TO ±18V
VERY LOW SUPPLY CURRENT (1.1mA)
INDEPENDENT OF SUPPLY VOLTAGE
(1.4mW/comparator at +5V)
LOW INPUT BIAS CURRENT : 25nA TYP
LOW INPUT OFFSET CURRENT : ±5nA TYP
INPUT COMMON-MODE VOLTAGE RANGE
INCLUDES GROUND
LOW OUTPUT SATURATION VOLTAGE :
250mV TYP. (IO = 4mA)
DIFFERENTIAL INPUT VOLTAGE RANGE
EQUAL TO THE SUPPLY VOLTAGE
TTL, DTL, ECL, MOS, CMOS COMPATIBLE
OUTPUTS
DESCRIPTION
This device consists of four independent precision
voltage comparators. All these comparators were
designed specifically to operate from a single power
supply over a wide range of voltages. Operation
from split power supplies is also possible.
These comparators also have a unique characteristic in the fact that the input common-mode voltage
range includes ground even though operated from
a single power supply voltage.
N
DIP14
(Plastic Package)
D
SO14
(Plastic Micropackage)
ORDER CODES
Part
Number
Temperature
Range
o
-40, +125 C
LM2901
Package
N
D
•
•
Example : LM2901D
PIN CONNECTIONS (top view)
November 1995
Output 2 1
14
Output 3
Output 1 2
13
Output 4
V + 3
CC
12
VCC-
Invertinginput 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
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LM2901
SCHEMATIC DIAGRAM (1/4 LM901)
VCC
3.5µA
100µA
3.5µA
100µA
Non-inverting
Input
VO
Inverting
Input
VCC
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
VCC
Supply Voltage
Vid
Differential Input Voltage
VI
Input Voltage
Output Short-circuit to Ground - (note 1)
Ptot
Power Dissipation
Toper
Operating Free-air Temperature Range
Tstg
Storage Temperature Range
Value
Unit
±18 to 36
V
±36
V
-0.3 to +36
V
Infinite
570
mW
-40, +125
o
-65, +150
o
C
C
Notes : 1. S hort- cir cui t f r om t he output t o V C C + can cause excessive heat i ng and eventual dest r uct i on. T he maxi mum
output cur r ent is appr oxi mat el y 20mA, i ndependent of t he magni tude of V CC + .
2/9
LM2901
ELECTRICAL CHARACTERISTICS
VCC+ = +5V, VCC- = GND, Tamb = 25oC (unless otherwise specified)
Symbol
Vio
Iio
Iib
Avd
ICC
Vicm
Parameter
Typ.
Max.
Input Offset Voltage – (note 2)
o
T amb = +25 C
T min. ≤ Tamb ≤ Tmax.
1
7
15
Input Offset Current
o
T amb = +25 C
T min. ≤ Tamb ≤ Tmax.
5
50
150
25
250
400
+
Min.
mV
nA
–
Input Bias Current (II or II ) - (note 3)
o
T amb = +25 C
T min. ≤ Tamb ≤ Tmax.
Large Signal Voltage Gain
(VCC = 15V, RL =15kΩ, VO = 1 to 11V)
nA
V/mV
25
Supply Current (all comparators)
VCC = +5V, no load
VCC = +30V, no load
Input Common Mode Voltage Range - (note 4)
(VCC = 30V)
o
T amb = +25 C
T min. ≤ Tamb ≤ Tmax.
200
mA
1.1
1.3
V
0
0
VCC 1.5
VCC+ -2
VCC+
Differential Input Voltage - (note 6)
VOL
Low Level Output Voltage
(Vid = -1V, Isink = 4mA)
T amb = +25oC
T min. ≤ Tamb ≤ Tmax.
250
High Level Output Current ( Vid = 1V)
(VCC = VO = 30V)
T amb = +25oC
T min. ≤ Tamb ≤ Tmax.
0.1
Isink
tre
Notes :
Output Sink Current
(Vid = -1V, VO = 1.5V)
Response Time – (note 5)
+
(R L = 5.1kΩ connected to VCC )
2
2.5
+
Vid
IOH
Unit
V
mV
400
700
1
nA
µA
mA
6
16
1.3
µs
2. A t out put sw it ch poi nt, VO ≈ 1. 4V , R S = 0 wi th VC C + from 5V t o 30V, and over the full i nput common- mode r ange
(0V t o V C C + –1.5V) .
3. The di rect ion of the i nput curr ent i s out of t he IC due t o t he P N P i nput stage. This cur r ent is essent i al ly constant , i ndependent of the st ate of t he out put , so no loading char ge exi st s on t he reference of input l ines.
4. The i nput common-mode vol t age of ei ther input si gnal volt age should not be al low ed t o go negati ve by more
than 0.3V. T he upper end of the common- mode volt age r ange i s VC C + –1. 5V, but ei ther or both i nput s can go
to +30V w i thout damage.
5. The r esponse t ime speci fi ed i s f or a 100mV input st ep w i th 5mV overdri ve. For lar ger over dri ve signal s 300ns
can be obt ained.
6. P osi t i ve excur si ons of i nput vol tage may exceed the power suppl y level . As long as the ot her vol t age r emai ns
wi t hi n the common- mode range, the comparat or w i ll provide a pr oper output st at e. T he low input vol tage stat e
must not be l ess than –0.3V ( or 0.3V bel low t he negat ive pow er supply, i f used) .
3/9
LM2901
SUPPLY CURRENT versus
SUPPLY VOLTAGE
80
Tamb = -55°C
INPUT CURRENT (nA)
Vi = 0V
Tamb = 0°C
0.8
T
= +25°C
0.6
T amb = +70°C
0.4
Tamb = +125°C
0.2
RL =
0
10
20
30
SUPPLY VOLTAGE (V)
40
0
-1
Tamb = -55°C
10
10
-2
Tamb = +25°C
-3
10
-2
10
-1
10
0
10
1
Tamb = +25°C
40
20
Tamb = +125°C
0
OUTPUT VOLTAGE (V)
SATURATION VOLTAGE(V)
1
Tamb = +125°C
10
Tamb = 0°C
10
20
30
SUPPLY VOLTAGE (V)
10
2
OUTPUT SINK CURRENT (mA)
6
5
4
3
2
1
0
0
-50
-100
Input overdrive : 5mV
OUTPUT VOLTAGE(V)
INPUT VOLTAGE(mV)
4/9
6
Input overdrive : 100mV
5
4
5mV
3
2
20mV
1
0
100
Tamb = +25°C
50
0
0.5
1
1.5
TIME (µs)
e
I
eo
100mV
T amb = +25°C
0
5V
5. 1kΩ
e
5V
5.1kΩ
20mV
RESPONSE TIME FOR VARIOUS INPUT
OVERDRIVES - POSITIVE TRANSITION
0
40
RESPONSE TIME FOR VARIOUS INPUT
OVERDRIVES - NEGATIVE TRANSITION
Out of saturation
10
Tamb = -55°C
Tamb = +70°C
OUTPUT SATURATION VOLTAGE
versus OUTPUT CURRENT
10
9
R i = 10 Ω
60
INPUT VOLTAGE (mV)
SUPPLYCURRENT (mA)
1
INPUT CURRENT versus
SUPPLY VOLTAGE
I
eo
2
0.5
1
1.5
TIME (µs)
2
LM2901
TYPICAL APPLICATIONS
DRIVING CMOS
BASIC COMPARATOR
5V
VCC = 5V
15kΩ
+V(ref)
100kΩ
+V(ref)
1/4
LM2901
VO
-V(ref)
DRIVING TTL
1/4
LM2901
&
-V(ref)
LOW FREQUENCY OP AMP
5V
5V
15kΩ
1/4
LM2901
10kΩ
+V(ref)
1/4
LM2901
&
-V(ref)
&
LOW FREQUENCY OP AMP
~
eI
eo
100kΩ
1kΩ
0.5µF
AV =100
TRANSDUCER AMPLIFIER
5V
(eo =0Vfor eI =0V)
5V
Magneticpick-up
10kΩ
3kΩ
15kΩ
1/4
LM2901
~ eI
1/4
LM2901
2N2222
0.5µF
eo
20MΩ
100kΩ
1kΩ
AV =100
eo
10kΩ
5/9
LM2901
TYPICAL APPLICATIONS (continued)
TIME DELAY GENERATOR
VCC = +15V
10kΩ
15kΩ
3kΩ
200kΩ
10MΩ
10kΩ
V
VO3 CC
1/4
LM2901
V3
t0
t3
3kΩ
1/4
VCC
0t
O
LM2901
tA
10MΩ
51kΩ
10kΩ
10kΩ
VC1
VO2 VCC
1/4
LM2901
V2
V(ref.)
t0 t2
0.001µ F
INPUTGATINGSIGNAL
3kΩ
VCC
10MΩ
51kΩ
10kΩ
1/4
V3
VC1V2
V1
VO1 VCC
LM2901
V1
0
t0 t1 t2 t3
t
t4
t0 t1
51kΩ
LOW FREQUENCY OP AMP WITH OFFSET
ADJUST
ZERO CROSSING DETECTOR
(single power supply)
5V
5V
Offset Adjust
100kΩ
5V
1MΩ
R2
Rs
1MΩ
RI
15kΩ
1/4
LM2901
eI ~
eI
2N2222
0.5µF
5.1kΩ
100kΩ
5.1kΩ
1N4148
100kΩ
1/4
LM2901
R1
100kΩ
1kΩ
20MΩ
eo
6/9
10kΩ
5.1kΩ
LM2901
TYPICAL APPLICATIONS (continued)
TWO-DECADE HIGH-FREQUENCY VCO
VCC
100kΩ
3kΩ
500pF
Frequencycontrol
voltageinput
vcontrol
VCC/2
VCC=+30V
+250mV Vcontrol +50V
700Hz fo 100kHz
LIMIT COMPARATOR
Output 2
VCC/2
1/4
LM2901
CRYSTAL CONTROLLED OSCILLATOR
VCC=15V
VCC (12V)
200kΩ
10kΩ
2kΩ
100kΩ
1/4
LM2901
high
Output 1
20kΩ
50kΩ
V(ref)
1/4
LM2901
0.01µ F
20kΩ
2RS
3kΩ
5.1kΩ
1/4
LM2901
10kΩ
0.1µ F
VCC
100kΩ
VCC
Lamp
RS
1/4
LM2901
0.1µ F
eo
0
eI ~
2RS
1/4
LM2901
f = 100kHz
2N2222
200kΩ
V(ref)
low
SPLIT-SUPPLY APPLICATIONS
COMPARATOR WITH A NEGATIVE
REFERENCE
ZERO CROSSING DETECTOR
15V
15V
5.1kΩ
eI
1/4
LM2901
~
eo
5.1kΩ
eI
1/4
LM2901
eo
~
5V
15V
15V
7/9
LM2901
PACKAGE MECHANICAL DATA
14 PINS - PLASTIC DIP OR CERDIP
Dimensions
a1
B
b
b1
D
E
e
e3
F
i
L
Z
8/9
Min.
0.51
1.39
Millimeters
Typ.
Max.
1.65
Min.
0.020
0.055
0.5
0.25
Inches
Typ.
0.065
0.020
0.010
20
0.787
8.5
2.54
15.24
0.335
0.100
0.600
7.1
5.1
0.280
0.201
3.3
1.27
Max.
0.130
2.54
0.050
0.100
LM2901
PACKAGE MECHANICAL DATA
14 PINS - PLASTIC MICROPACKAGE (SO)
Dimensions
A
a1
a2
b
b1
C
c1
D
E
e
e3
F
G
L
M
S
Min.
Millimeters
Typ.
0.1
0.35
0.19
Max.
1.75
0.2
1.6
0.46
0.25
Min.
Inches
Typ.
0.004
0.014
0.007
0.5
Max.
0.069
0.008
0.063
0.018
0.010
0.020
o
45 (typ.)
8.55
5.8
8.75
6.2
0.336
0.228
1.27
7.62
3.8
4.6
0.5
0.334
0.244
0.050
0.300
4.0
5.3
1.27
0.68
0.150
0.181
0.020
0.157
0.208
0.050
0.027
o
8 (max.)
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics 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 licence is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON
Microelectronics. Specifications mentioned in this publication are subject to change witho ut notice. This pub lication supersedes
and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not author ized for use as critical
componen ts in life support devices or systems without express written approval of SGS-THOMSON Microelectronics.
 1995 SGS-THOMSON Microelectronics - All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
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