The EL5485C and EL5486C comparators are designed for operation
in single supply and dual supply applications with 5V to 12V between
V
S
+ and V
S
-. For single supplies, the inputs can operate from 0.1V
below ground for use in ground sensing applications.
The output side of the comparators can be supplied from a single sup-
ply of 2.7V to 5V. The rail-to-rail output swing enables direct
connection of the comparator to both CMOS and TTL logic circuits.
The latch input of the EL5486C can be used to hold the comparator
output value by applying a low logic level to the pin.
The EL5485C is available in the 16-pin SO (0.150") package and the
EL5486C in the 24-pin QSOP package. Both are specified for opera-
tion over the full -40°C to +85°C temperature range. Also available
are single (EL5185C), dual (EL5285C), and window comparator
(EL5287C) versions.
Applications
•
•
•
•
•
•
Threshold detection
High speed sampling circuits
High speed triggers
Line receivers
PWM circuits
High speed V/F converters
Pin Configurations
INA- 1
INA+ 2
24 IND-
23 IND+
22 NC
+
-
-
+
21 VS+
20 LATCHD
19 OUTD
18 OUTC
17 LATCHC
16 VSD
+
-
-
+
15 NC
Ordering Information
Part No
EL5485CS
EL5485CS-T7
EL5485CS-T13
EL5486CU
EL5486CU-T13
Package
16-Pin SO (0.150")
16-Pin SO (0.150")
16-Pin SO (0.150")
24-Pin QSOP
24-Pin QSOP
Tape &
Reel
-
7”
13”
-
13”
Outline #
MDP0027
MDP0027
MDP0027
MDP0040
MDP0040
NC 3
GND 4
INA- 1
INA+ 2
+
GND 3
OUTA 4
OUTB 5
VS- 6
+
INB+ 7
INB- 8
EL5485CS
[16-Pin SO (0.150")]
-
-
+
-
-
+
14 VS+
13 OUTD
12 OUTC
11 VSD
10 INC+
9 INC-
OUTB 7
LATCHB 8
VS- 9
NC 10
INB+ 11
INB- 12
EL5486CU
(24-Pin QSOP)
16 IND-
15 IND+
LATCHA 5
OUTA 6
January 18, 2002
14 INC+
13 INC-
Note:
All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.
Absolute maximum ratings are those values beyond which the device
could be permanently damaged. Absolute maximum ratings are stress
ratings only and functional device operation is not implied
Analog Supply Voltage (V
S
+ to V
S
-)
+12.6V
Digital Supply Voltage (V
SD
to GND)
+7V
Differential Input Voltage
[(V
S
-) -0.2V] to [(V
S
+) +0.2V]
Common-Mode Input Voltage
Latch Input Voltage
Storage Temperature Range
Ambient operating Temperature
Operating Junction Temperature
Power Dissipation
[(V
S
-) -0.2V] to [(V
S
+) +0.2V]
-0.2V to [(V
SD
) +0.2V]
-65°C to +150°C
-40°C to +85°C
125°C
See Curves
Important Note:
All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are at the
specified temperature and are pulsed tests, therefore: T
J
= T
C
= T
A
.
Electrical Characteristics
V
S
=
±5V,
V
SD
= 5V, R
L
= 2.3kΩ, T
A
= 25°C, unless otherwise specified.
Parameter
Input
V
OS
I
B
C
IN
I
OS
V
CM
CMRR
Output
V
OH
V
OL
t
pd
+
t
pd
-
Supply
I
S
+
I
S
-
I
SD
PSRR
Latch
V
LH
V
LL
I
LH
I
LL
t
d
+
t
d
-
t
s
t
h
t
pw
(D)
Latch Input Voltage High
Latch Input Voltage Low
Latch Input Current High
Latch Input Current Low
Positive Going Delay Time
Negative Going Delay Time
Minimum Setup Time
Minimum Hold Time
Minimum Latch Disable Pulse Width
V
LH
= 3.0V
V
LL
= 0.3V
V
OD
= 5mV, C
L
= 15pF, I
O
= 2mA
V
OD
= 5mV, C
L
= 15pF, I
O
= 2mA
0.8
-30
-30
-18
-24
4
4
2
1
5
2.0
V
V
µA
µA
ns
ns
ns
ns
ns
Positive Analog Supply Current
Negative Analog Supply Current
Digital Supply Current at No Load
Power Supply Rejection Ratio
Per comparator
Per comparator
Per comparator, output high
Per comparator, output low
55
12
7.5
5.5
0.9
80
13.5
8.5
6.5
1.2
mA
mA
mA
mA
dB
Output High Voltage
Output Low Voltage
Latch Disable to High Delay
Latch Disable to Low Delay
V
IN
> 250mV
V
IN
> 2 50mV
V
IN
= 1V
P-P
, V
OD
= 50mV
V
IN
= 1V
P-P
, V
OD
= 50mV
V
SD
- 0.6
V
SD
- 0.4
GND + 0.25
4
4
GND + 0.5
6
6
V
V
ns
ns
Input Offset Voltage
Input Bias Current
Input Capacitance
Input Offset Current
Input Voltage Range
Common-mode Rejection Ratio
-5.1V < V
CM
< +2.75V, V
O
= 2.5V
V
CM
= 0V, V
O
= 2.5V
-2.5
(V
S
-) - 0.1
65
90
V
CM
= 0V, V
O
= 2.5V
-10
1
-5
5
0.5
2.5
(V
S
+) - 2.25
4
mV
µA
pF
µA
V
dB
Description
Condition
Min
Typ
Max
Unit
Dynamic Performance
2
EL5485C, EL5486C
EL5485C, EL5486C
Quad 4ns High Speed Comparators
Typical Performance Curves
Supply Current vs Supply Voltage
14
12
10
I
S
(mA)
8
6
4
4.2
2
0
0
1
2
3
±V
S
(V)
Offset Voltage vs Temperature
2.5
2
1.5
V
OS
(mV)
1
0.5
0
-0.5
-50
IB (µA)
9
8
7
6
5
4
3
2
-30
-10
10
30
50
70
90
1
-50
-30
-10
10
30
50
70
90
4
5
6
4
-50
I
S
-
V
IN
=-50mV
R
L
=2.3kΩ
4.8
I
S
+
V
OH
(V)
4.6
5
Output High Voltage vs Temperature
4.4
-30
-10
10
30
50
70
90
Temperature (°C)
Input Bias Current vs Temperature
Temperature (°C)
Output Low Voltage vs Temperature
0.4
14
12
Temperature (°C)
Supply Current vs Temperature (per comparator)
I
S
+
0.3
V
OL
(V)
Supply Current (mA)
10
8
6
4
2
0.1
-50
0
-50
I
S
-
0.2
-30
-10
10
30
50
70
90
-30
-10
10
30
50
70
90
Temperature (°C)
Temperature (°C)
3
EL5485C, EL5486C
EL5485C, EL5486C
Quad 4ns High Speed Comparators
Typical Performance Curves
Propagation Delay vs Overdrive
V
IN
=1V
STEP
4.2
4.1
4
Delay Time (ns)
3.9
3.8
3.7
3.6
3.5
50 100 150 200 250 300 350 400 450 500 550 600
V
OD
(mV)
Propagation Delay vs Overdrive
V
IN
=3V
STEP
6.8
6.6
6.4
Delay Time (ns)
6.2
I
SD
(mA)
6
5.8
5.6
5.4
5.2
5
0.2
0
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
0
10
20
30
40
50
V
OD
(V)
Propagation Delay vs Overdrive
V
IN
=5V
STEP
7.2
7
6.8
Delay Time (ns)
6.6
6.4
6.2
6
5.8
0.2 0.4 0.6 0.8
T
PD
-
Delay Time (ns)
T
PD
+
V
S
=±5V
V
SD
=5V
R
L
=2.3kΩ
16
14
12
10
8
6
4
1
1.2 1.4 1.6 1.8
V
OD
(V)
2
2.2 2.4 2.6
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Source Resistance (kΩ)
V
S
=±5V
V
SD
=5mV
V
OD
=50mV
R
L
=2.3kΩ
T
PD
+
T
PD
-
Frequency (MHz)
Propagation Delay vs Source Resistance
V
IN
=1V
STEP
T
PD
-
T
PD
+
15
V
SD
=5V
V
SD
=3V
V
S
=±5V
V
SD
=5V
R
L
=2.3kΩ
25
V
S
=±5V
T
A
=25°C
R
L
=2.3kΩ
T
PD
-
V
S
=±5V
V
SD
=5V
R
L
=2.3kΩ
Delay Time (ns)
T
PD
+
4.5
4.4
4.3
4.2
4.1
4
3.9
3.8
3.7
3.6
3.5
4
4.2
4.4
4.6
4.8
5
±V
S
(V)
Digital Supply Current vs Switching Frequency
(per comparator)
5.2
5.4
5.6
5.8
6
T
PD
-
T
PD
+
V
SD
=V
S
+
V
OD
=50mV
R
L
=2.2kΩ
Propagation Delay vs Supply Voltage
20
10
5
4
EL5485C, EL5486C
EL5485C, EL5486C
Quad 4ns High Speed Comparators
Typical Performance Curves
Propagation Delay vs Load Capacitance
V
IN
=1V
STEP
7.5
7
6.5
Delay Time (ns)
6
5.5
5
4.5
4
0
10
20
30
40
50
60
70
80
90
100
C
LOAD
(pF)
Power Dissipation vs Ambient Temperature
JEDEC JESD51-7 High Effective Thermal Conductivity Test Board
1.4
1.250W
1.2
Power Dissipation (W)
1
0.8
0.6
0.4
0.2
0
0
25
50
75 85
100
125
150
Ambient Temperature (°C)
Output with 50MHz Input
V
IN
=3V
P-P
Input
(5ns/div,
0.5V/div)
1.136W
SO
16
Power Dissipation vs Ambient Temperature
JEDEC JESD51-3 Low Effective Thermal Conductivity Test Board
便携式数字数据采集系统（PDDAS）使用了LabVIEW实时模块和PXI，以控制风洞测试和采集记录来自128个不同通道的空气压力数据 "通过LabVIEW实时模块，可以在各种操作情况下获得采集空气压力数据及向风洞提供反馈控制信号所需的确定性响应时间。" – Dave Scheibenhoffer, G Systems 挑战: 用一个可采集、分析和存储来自下一代喷气式战斗机引擎设计的动...[详细]
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