1
1012afb
LT1012A/LT1012
OP-07 Type Performance:
at 1/8th
of OP-07's Supply Current
at 1/20th of OP-07's Bias and Offset Currents
Guaranteed Offset Voltage: 25V Max
Guaranteed Bias Current: 100pA Max
Guaranteed Drift: 0.6V/C Max
Low Noise, 0.1Hz to 10Hz: 0.5V
P-P
Guaranteed Low Supply Current: 500A Max
Guaranteed CMRR: 114dB Min
Guaranteed PSRR: 114dB Min
Guaranteed Operation at 1.2V Supplies
The LT
1012 is an internally compensated universal
precision operational amplifier which can be used in
practically all precision applications. The LT1012
combines picoampere bias currents (which are
maintained over the full 55C to 125C temperature
range), microvolt offset voltage (and low drift with time
and temperature), low voltage and current noise, and
low power dissipation. The LT1012 achieves precision
operation on two Ni-Cad batteries with 1mW of power
dissipation. Extremely high common mode and
power supply rejection ratios, practically unmeasurable
warm-up drift, and the ability to deliver 5mA load current
with a voltage gain of one million round out the LT1012's
superb precision specifications.
The all around excellence of the LT1012 eliminates the
necessity of the time consuming error analysis procedure
of precision system design in many applications; the
LT1012 can be stocked as the universal internally
compensated precision op amp.
Replaces OP-07 While Saving Power
Precision Instrumentation
Charge Integrators
Wide Dynamic Range Logarithmic Amplifiers
Light Meters
Low Frequency Active Filters
Thermocouple Amplifiers
250V Common Mode Range Instrumentation Amplifier (A
V
= 1)
Picoamp Input Current,
Microvolt Offset,
Low Noise Op Amp
Typical Distribution of Input
Offset Voltage
+IN
IN
+
2
3
4
LT1012
7
6
LT1012A TA01
R3
1M
R2
20k
R4
19.608k
R1
1M
R5
975k
6V TO 18V
6V TO 18V
R6
25k
OUT
R1 TO R6: VISHAY 444
ACCUTRACT THIN FILM
OPTIONAL
CMRR
TRIM
50k
SIP NETWORK
: VISHAY 444 PIN NUMBERS
VISHAY INTERTECHNOLOGY, INC
63 LINCOLN HIGHWAY
MALVERN, PA 19355
COMMON MODE REJECTION RATIO = 74dB (RESISTOR LIMITED)
WITH OPTIONAL TRIM = 130dB
OUTPUT OFFSET (TRIMMABLE TO ZERO) = 500V
OUTPUT OFFSET DRIFT = 10V/C
INPUT RESISTANCE = 1M
COMMON
MODE
INPUT
250V
X
3
4
1
2
7
6
5
INPUT OFFSET VOLTAGE (V)
NUMBER OF UNITS
120
160
200
LT1012A TA02
80
40
0
40
20
20
40
0
1140 UNITS
FROM THREE
RUNS
V
S
= 15V
T
A
= 25C
V
CM
= 0V
Protected by U. S. patents 4,575,685 and 4,775,884
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
2
LT1012A/LT1012
1012afb
Supply Voltage ...................................................... 20V
Differential Input Current (Note 1) ...................... 10mA
Input Voltage ......................................................... 20V
Output Short Circuit Duration .......................... Indefinite
(Note 1)
Operating Temperature Range
LT1012AM/LT1012M (OBSOLETE).... 55C to 125C
LT1012I .............................................. 40C to 85C
LT1012AC/LT1012C
LT1012D/LT1012S8 ................................ 0C to 70C
Storage Temperature Range ................. 65C to 150C
Lead Temperature (Soldering, 10 sec).................. 300C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ABSOLUTE AXI U RATI GS
W
W
W
U
PACKAGE/ORDER I FOR ATIO
U
U
W
ORDER PART NUMBER
LT1012S8
PART MARKING
1012
TOP VIEW
1
2
3
4
8
7
6
5
VOS
TRIM
IN
+IN
V
VOS
TRIM
V
+
OUT
+
OVER
COMP
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 100C,
JA
= 170C/W
LT1012AMH
LT1012MH
LT1012ACH
LT1012CH
LT1012DH
ORDER PART NUMBER
ORDER PART NUMBER
LT1012ACN8
LT1012CN8
LT1012DN8
LT1012IN8
TOP VIEW
V
OS
TRIM
V
OS
TRIM
IN
OUT
V
+
+IN
OVER
COMP
V
(CASE)
+
8
4
7
1
5
3
6
2
H PACKAGE
8-LEAD TO-5 METAL CAN
T
JMAX
= 150C,
JA
= 150C/W,
JC
= 45C/W
TOP VIEW
1
2
3
4
8
7
6
5
VOS
TRIM
IN
+IN
V
VOS
TRIM
V
+
OUT
OVER
COMP
+
N8 PACKAGE
8-LEAD PDIP
T
JMAX
= 100C,
JA
= 130C/W
OBSOLETE PACKAGE
Consider the S8 or N8 Packages for Alternate Source
3
1012afb
LT1012A/LT1012
V
S
= 15V, V
CM
= OV, T
A
= 25C, unless otherwise noted.
LT1O12AM/AC
LT1O12M/I
LT1O12C
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
8
25
8
35
10
50
V
(Note 3)
20
90
20
90
25
120
V
Long Term lnput Offset
0.3
0.3
0.3
V/month
Voltage Stability
I
OS
Input Offset Current
15
100
15
100
20
150
pA
(Note 3)
25
150
25
150
30
200
pA
I
B
Input Bias Current
25
100
25
100
30
150
pA
(Note 3)
35
150
35
150
40
200
pA
e
n
Input Noise Voltage
0.1Hz to 10Hz
0.5
0.5
0.5
V
P-P
e
n
Input Noise Voltage Density
f
O
= 10Hz (Note 4)
17
30
17
30
17
30
nVHz
f
O
= 1000Hz (Note 5)
14
22
14
22
14
22
nVHz
i
n
Input Noise Current Density
f
O =
10Hz
20
20
20
fA/Hz
A
VOL
Large Signal Voltage Gain
V
OUT
= 12V, R
L
10k 300
2000
300
2000
200
2000
V/mV
V
OUT
= 10V, R
L
2k
300
1000
200
1000
200
1000
V/mV
CMRR
Common Mode Rejection
V
CM
= 13.5V
114
132
114
132
110
132
dB
Ratio
PSRR
Power SuppIy Rejection Ratio V
S
= 1.2V to 20V
114
132
114
132
110
132
dB
Input Voltage Range
13.5
14
13.5
14
13.5
14
V
V
OUT
Output Voltage Swing
R
L
= 10k
13
14
13
14
13
14
V
Slew Rate
0.1
0.2
0.1
0.2
0.1
0.2
V/s
I
S
Supply Current
370
500
380
380
A
(Note 3)
380
600
380
600
380
600
A
ELECTRICAL CHARACTERISTICS
4
LT1012A/LT1012
1012afb
V
S
= 15V, V
CM
= 0V, T
A
= 25C, unless otherwise noted.
LT1012D
LT1012S8
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
12
60
15
120
V
(Note 3)
25
25
180
V
Long Term Input Offset
0.3
0.4
V/month
Voltage Stability
l
OS
Input Offset Current
20
150
50
280
pA
(Note 3)
30
60
380
pA
I
B
Input Bias Current
30
150
80
300
pA
(Note 3)
40
120
400
pA
e
n
Input Noise Voltage
0.1Hz to 10Hz
0.5
0.5
V
P-P
e
n
Input Noise Voltage Density
f
O
= 10Hz (Note 5)
17
30
17
30
nVHz
f
O
= 1000Hz (Note 5)
14
22
14
22
nVHz
i
n
lnput Noise Current Density
f
O
= 10Hz
20
20
fA/Hz
A
VOL
Large-Signal Voltage Gain
V
OUT
=
12V,R
L
10k
200
2000
200
2000
V/mV
V
OUT
=
10V,R
L
2k
200
1000
120
1000
V/mV
CMRR
Common Mode Rejection Ratio
V
CM
= 13.5V
110
132
110
132
dB
PSRR
Power Supply Rejection Ratio
V
S
= 1.2V to 20V
110
132
110
132
dB
Input Voltage Range
13.5
14.0
13.5
14.0
V
V
OUT
Output Voltage Swing
R
L
= 10k
13
14
13
14
V
Slew Rate
0.1
0.2
0.1
0.2
V/s
I
S
Supply Current
(Note 3)
380
600
380
600
A
ELECTRICAL CHARACTERISTICS
5
1012afb
LT1012A/LT1012
LT1012AM
LT1012M/I
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
30
60
30
180
V
(Note 3)
40
180
40
250
V
Average Temperature Coefficient of
0.2
0.6
0.2
1.5
V/C
Input Offset Voltage
I
OS
Input Offset Current
30
250
30
250
pA
(Note 3)
70
350
70
350
pA
Average Temperature Coefficient of
0.3
2.5
0.3
2.5
pA/C
Input Offset Current
I
B
Input Bias Current
80
600
80
600
pA
(Note 3)
150
800
150
800
pA
Average Temperature Coefficient of
0.6
6.0
0.6
6.0
pA/C
Input Bias Current
A
VOL
Large-Signal Voltage Gain
V
OUT
= 12V, R
L
10k
200
1000
150
1000
V/mV
V
OUT
= 10V, R
L
2k
200
600
100
600
V/mV
CMRR
Common Mode Rejection Ratio
V
CM
= 13.5V
110
128
108
128
dB
PSRR
Power Supply Rejection Ratio
V
S
= 1.5V to 20V
110
126
108
126
dB
Input Voltage Range
13.5
13.5
V
V
OUT
Output Voltage Swing
R
L
= 10k
13
14
13
14
V
I
S
Supply Current
400
650
400
800
A
The
denotes the specifications which apply over the full operating
temperature range of 55C T
A
125C for LT1012AM and LT1012M, and 40C T
A
85C for LT1012I. V
S
= 15V, V
CM
= 0V,
unless otherwise noted.
ELECTRICAL CHARACTERISTICS
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