149456.pm6
1
LT1494/LT1495/LT1496
TYPICAL APPLICATIO
N
U
APPLICATIO S
U
FEATURES
1.5
A Max, Single, Dual
and Quad Over-The-Top Precision
Rail-to-Rail Input and Output Op Amps
s
Low Supply Current: 1.5
A Max
s
Rail-to-Rail Input and Output
s
Low Offset Voltage: 375
V Max
s
Operating Temperature Range: 40
C to 125
C
s
Over-The-Top
TM
Inputs Operate Above V
+
s
Wide Supply Range: 2.2V to 36V
s
Single Supply Input Range: 0.3V to 36V
s
Low Input Bias Current: 250pA
s
Low Input Offset Current: 20pA
s
High A
VOL
: 100V/mV Minimum Driving 100k
Load
s
Output Sources and Sinks 500
A Load Current
s
Reverse Battery Protected to 18V
The LT
1494/LT1495/LT1496 are the lowest power
(I
S
1.5
A) op amps with precision specifications. The
extremely low supply current is combined with excellent
amplifier specifications: input offset voltage is 375
V
maximum with a typical drift of only 0.4
V/
C, input offset
current is 100pA maximum. A minimum open-loop gain
(A
VOL
) of 100V/mV ensures that gain errors are small. The
device characteristics change little over the supply range
of 2.2V to
15V. Supply rejection is 90dB and the common
mode rejection ratio is 90dB. Operation is specified for 3V,
5V and
15V supplies. Reverse battery protection
(18V min) and inputs that operate above the positive
supply make the LT1494/LT1495/LT1496 easy to use in
harsh environments.
The low bias currents and offset current of the amplifier
permit the use of megohm level source resistors without
introducing significant errors. Voltage noise at 4
V
P-P
is
remarkably low considering the low supply current.
The LT1494 is available in the 8-Pin MSOP, PDIP and SO
packages.The LT1495 is available in plastic 8-Pin PDIP
and SO packages with the standard dual op amp pinout.
The LT1496 is available in 14-Pin SO and PDIP packages.
s
Battery- or Solar-Powered Systems
s
Portable Instrumentation
s
Remote Sensor Amplifier
s
Micropower Filter
Micropower Integrating Current Sense
+
1/2 LT1495
0.1
F
RESET
R
I
1M
1M
R
S
0.1
LOAD
+
1/2 LT1495
I
L
V
CC
10M
10M
V
CC
V
O
OUTPUT SWITCHES
WHEN I
L
dt = 0.98 V
CC
I
S
= 3
A DURING INTEGRATION; I
S
= 5
A END OF INTEGRATION
C = (4.9A)(SEC) FOR V
CC
= 5V
R
I
R
S
( )
1495 TA01
200k
TC V
OS
Distribution
TC V
OS
(
V/
C)
UNITS
30
25
20
15
10
5
0
1.2
0.4
0.4
1.2
1495 TA02
2.0
1.6
2.0
0.8
0
0.8
1.6
100 AMPLIFIERS
V
S
=
2.5V
40
C TO 85
C
DESCRIPTIO
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
Over-The-Top is a trademark of Linear Technology Corporation.
2
LT1494/LT1495/LT1496
Total Supply Voltage (V
+
to V
) .............................. 36V
Differential Input Voltage ......................................... 36V
Input Current ......................................................
10mA
Output Short-Circuit Duration ....................... Continuous
Operating Temperature Range (Note 2)
LT1494C/LT1495C/LT1496C .............. 40
C to 85
C
LT1494I/LT1495I/LT1496I ................. 40
C to 85
C
LT1494H/LT1495H/LT1496H ........... 40
C to 125
C
Specified Temperature Range (Note 3)
LT1494C/LT1495C/LT1496C .............. 40
C to 85
C
LT1494I/LT1495I/LT1496I ................. 40
C to 85
C
LT1494H/LT1495H/LT1496H ........... 40
C to 125
C
Storage Temperature Range ................. 65
C to 150
C
Junction Temperature ........................................... 150
C
Lead Temperature (Soldering, 10 sec).................. 300
C
ABSOLUTE
M
AXI
M
U
M
RATINGS
W
W
W
U
PACKAGE/ORDER I
N
FOR
M
ATIO
N
W
U
U
ORDER PART
NUMBER
Consult LTC Marketing for parts specified with wider operating temperature ranges.
T
JMAX
= 150
C,
JA
= 130
C/ W (N)
T
JMAX
= 150
C,
JA
= 160
C/ W (S)
T
JMAX
= 150
C,
JA
= 130
C/ W (N8)
T
JMAX
= 150
C,
JA
= 190
C/ W (S8)
S8 PART MARKING
1495
1495I
1495H
LT1495CN8
LT1495CS8
LT1495IN8
LT1495IS8
LT1495HS8
ORDER PART
NUMBER
LT1496CN
LT1496CS
LT1496IN
LT1496IS
LT1496HS
(Note 1)
1
2
3
4
8
7
6
5
TOP VIEW
OUT A
IN A
+IN A
V
V
+
OUT B
IN B
+IN B
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
A
B
1
2
3
4
5
6
7
TOP VIEW
N PACKAGE
14-LEAD PDIP
S PACKAGE
14-LEAD PLASTIC SO
14
13
12
11
10
9
8
OUT A
IN A
+IN A
V
+
+IN B
IN B
OUT B
OUT D
IN D
+IN D
V
+IN C
IN C
OUT C
A
D
B
C
ORDER PART
NUMBER
MS8 PART MARKING
1494
1494I
1494H
LT1494CN8
LT1494CS8
LT1494IN8
LT1494IS8
LT1494HS8
ORDER PART
NUMBER
S8 PART MARKING
LT1494CMS8
LT1494IMS8
LTFF
LTFG
TOP VIEW
NC
V
+
OUT
NC
NC
IN
+IN
V
1
2
3
4
8
7
6
5
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150
C,
JA
= 130
C/ W (N8)
T
JMAX
= 150
C,
JA
= 190
C/ W (S8)
T
JMAX
= 150
C,
JA
= 250
C/ W
1
2
3
4
8
7
6
5
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
NC
V
+
OUT
NC
NC
IN
+IN
V
3
LT1494/LT1495/LT1496
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
V
S
= 5V
150
375
V
V
S
= 3V
200
475
V
V
S
= 5V, MS8 Package
150
475
V
V
S
= 3V, MS8 Package
200
575
V
I
B
Input Bias Current
(Note 5)
250
1000
pA
V
CM
= 10V (Note 6)
180
360
nA
I
OS
Input Offset Current
(Note 5)
20
100
pA
Input Noise Voltage
0.1Hz to 10Hz
4
V
P-P
e
n
Input Noise Voltage Density
f = 100Hz
185
nV/
Hz
i
n
Input Noise Current Density
f = 100Hz
10
fA/
Hz
A
VOL
Large-Signal Voltage Gain
V
S
= 5V, V
O
= 0.25V to 4.5V, R
L
= 100k
100
500
V/mV
V
S
= 3V, V
O
= 0.25V to 2.5V, R
L
= 100k
50
250
V/mV
Input Voltage Range
0
36
V
CMRR
Common Mode Rejection Ratio
V
CM
= 0V to 4V, V
S
= 5V
90
106
dB
V
CM
= 0V to 10V, V
S
= 5V
74
95
dB
PSRR
Power Supply Rejection Ratio
V
S
= 2.2V to 12V, V
CM
= V
O
= 0.5V
90
99
dB
Minimum Operating Supply Voltage
2.1
2.2
V
V
OL
Output Voltage Swing LOW
No Load
50
100
mV
I
SINK
= 100
A
210
410
mV
V
OH
Output Voltage Swing HIGH
No Load
V
+
0.07
V
+
0.035
V
I
SOURCE
= 100
A
V
+
0.32
V
+
0.160
V
I
SC
Short-Circuit Current
(Note 5)
0.7
1.3
mA
I
S
Supply Current per Amplifier
(Note 6)
1.0
1.5
A
Reverse Supply Voltage
I
S
= 10
A per Amplifier
18
V
SR
Slew Rate
A
V
= 1, V
S
=
5V
0.4
1.0
V/ms
GBW
Gain Bandwidth Product
f = 100Hz
2.7
kHz
ELECTRICAL CHARACTERISTICS
T
A
= 25
C, V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
O
= half supply, unless otherwise noted.
4
LT1494/LT1495/LT1496
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
V
S
= 5V
q
200
475
V
V
S
= 3V
q
250
575
V
V
S
= 5V, MS8 Package
q
200
575
V
V
S
= 3V, MS8 Package
q
250
675
V
V
OS
TC
Input Offset Voltage Drift
(Note 4)
q
0.4
2
V/
C
I
B
Input Bias Current
(Note 5)
q
250
1700
pA
V
CM
= 10V (Note 6)
q
275
nA
I
OS
Input Offset Current
(Note 5)
q
20
170
pA
A
VOL
Large-Signal Voltage Gain
V
S
= 5V, V
O
= 0.25V to 4.5V, R
L
= 100k
q
55
215
V/mV
V
S
= 3V, V
O
= 0.25V to 2.5V, R
L
= 100k
q
30
115
V/mV
Input Voltage Range
q
0.2
36
V
CMRR
Common Mode Rejection Ratio
V
CM
= 0.2V to 4V, V
S
= 5V
q
88
106
dB
V
CM
= 0.2V to 10V, V
S
= 5V
q
75
dB
PSRR
Power Supply Rejection Ratio
V
S
= 2.7V to 12V, V
CM
= V
O
= 0.5V
q
88
99
dB
Minimum Operating Supply Voltage
q
2.6
2.7
V
V
OL
Output Voltage Swing LOW
No Load
q
60
120
mV
I
SINK
= 100
A
q
245
490
mV
V
OH
Output Voltage Swing HIGH
No Load
q
V
+
0.10
V
+
0.05
mV
I
SOURCE
= 100
A
q
V
+
0.38
V
+
0.19
mV
I
SC
Short-Circuit Current
(Note 5)
q
0.4
0.9
mA
I
S
Supply Current per Amplifier
(Note 6)
q
1.5
2.3
A
ELECTRICAL CHARACTERISTICS
The
q
denotes the specifications which apply over the temperature range of 40
C
T
A
85
C, V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
O
=
half supply, unless otherwise noted. (Note 3)
The
q
denotes the specifications which apply over the temperature range of 0
C
T
A
70
C, V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
O
= half
supply, unless otherwise noted. (Note 3)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
V
S
= 5V
q
175
425
V
V
S
= 3V
q
225
525
V
V
S
= 5V, MS8 Package
q
175
525
V
V
S
= 3V, MS8 Package
q
225
625
V
V
OS
TC
Input Offset Voltage Drift
(Note 4)
q
0.4
2
V/
C
I
B
Input Bias Current
(Note 5)
q
250
1200
pA
V
CM
= 10V (Note 6)
q
240
500
nA
I
OS
Input Offset Current
(Note 5)
q
20
120
pA
A
VOL
Large-Signal Voltage Gain
V
S
= 5V, V
O
= 0.25V to 4.5V, R
L
= 100k
q
75
280
V/mV
V
S
= 3V, V
O
= 0.25V to 2.5V, R
L
= 100k
q
40
150
V/mV
Input Voltage Range
q
0.2
36
V
CMRR
Common Mode Rejection Ratio
V
CM
= 0.2V to 4V, V
S
= 5V
q
89
106
dB
V
CM
= 0.2V to 10V, V
S
= 5V
q
64
85
dB
PSRR
Power Supply Rejection Ratio
V
S
= 2.4V to 12V, V
CM
= V
O
= 0.5V
q
89
99
dB
Minimum Operating Supply Voltage
q
2.3
2.4
V
V
OL
Output Voltage Swing LOW
No Load
q
55
110
mV
I
SINK
= 100
A
q
225
450
mV
V
OH
Output Voltage Swing HIGH
No Load
q
V
+
0.08
V
+
0.04
V
I
SOURCE
= 100
A
q
V
+
0.36
V
+
0.18
V
I
SC
Short-Circuit Current
(Note 5)
q
0.6
1.1
mA
I
S
Supply Current per Amplifier
(Note 6)
q
1.2
1.8
A
5
LT1494/LT1495/LT1496
ELECTRICAL CHARACTERISTICS
T
A
= 25
C, V
S
=
15V, V
CM
= V
O
= 0V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
200
575
V
MS8 Package
200
675
V
I
B
Input Bias Current
25
1000
pA
I
OS
Input Offset Current
20
100
pA
A
VOL
Large-Signal Voltage Gain
V
O
=
10V, R
L
= 100k
100
360
V/mV
Input Voltage Range
15
21
V
CMRR
Common Mode Rejection Ratio
V
CM
= 15V to 14V
100
120
dB
PSRR
Power Supply Rejection Ratio
V
S
=
5V to
15V
96
120
dB
V
OL
Output Voltage Swing LOW
R
L
= 1M
14.85
14.70
V
R
L
= 100k
14.75
14.50
V
V
OH
Output Voltage Swing HIGH
R
L
= 1M
14.78
14.89
V
R
L
= 100k
14.62
14.81
V
I
SC
Short-Circuit Current
0.7
1.5
mA
I
S
Supply Current per Amplifier
1.4
2.0
A
LT1494H/LT1495H/LT1496H
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
V
S
= 5V
q
225
875
V
V
S
= 3V
q
275
975
V
V
OS
TC
Input Offset Voltage Drift
(Note 4)
q
0.4
3
V/
C
I
B
Input Bias Current
(Note 5)
q
3.8
10
nA
V
CM
= 10V (Note 6)
q
0.300
2
A
I
OS
Input Offset Current
(Note 5)
q
0.3
2
nA
A
VOL
Large-Signal Voltage Gain
V
S
= 5V, V
O
= 0.25V to 4.5V, R
L
= 100k
q
4
25
V/mV
V
S
= 3V, V
O
= 0.25V to 2.5V, R
L
= 100k
q
2
17
V/mV
Input Voltage Range
q
0.5
36
V
CMRR
Common Mode Rejection Ratio
V
CM
= 0.5V to 4V, V
S
= 5V
q
72
95
dB
V
CM
= 0.5V to 10V, V
S
= 5V
q
85
dB
PSRR
Power Supply Rejection Ratio
V
S
= 2.7V to 12V, V
CM
= V
O
= 0.5V
q
86
105
dB
Minimum Operating Supply Voltage
q
2.7
V
V
OL
Output Voltage Swing LOW
No Load
q
70
160
mV
I
SINK
= 100
A
q
275
550
mV
V
OH
Output Voltage Swing HIGH
No Load
q
V
+
140
V
+
45
mV
I
SOURCE
= 100
A
q
V
+
450
V
+
225
mV
I
S
Supply Current per Amplifier
(Note 6)
q
2
5
A
The
q
denotes the specifications which apply over the temperature range of 40
C
T
A
125
C. V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
O
=
half supply, unless otherwise noted. (Note 3)
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