FT1002
Precision Operational Amplifier
Features
s
Description
The FT1002 dual, matched precision operational ampli-
fiers combine excellent individual amplifier performance
with tight matching and temperature tracking between
amplifiers.
In the design, processing, and testing of the device,
particular attention has been paid to the optimisation of the
entire distribution of several key parameters and their
matching. Consequently, the specifications of even the
low cost commercial grade (FT1002C) have been spec-
tacularly improved compared to presently available de-
vices.
Essentially, the input offset voltage of all units is less than
80µV, and matching between amplifiers is consistently
beter than 60µV (see distribution plot below). Input bias
and offset currents, channel separation, common mode
and power suply rejections of the FT1002C are all speci-
fied at levels which were previsouly attainable only on very
expensive, selected grades of other dual devices. Power
dissipation is nearly halved compared to the most popular
precision duals, without adversely affecting noise or speed
performance. A by-product of lower dissipation is de-
creased warm-up drift. For even better performance in a
single precision op amp, refer to the FT1001 data sheet. A
bridge signal conditioning application is shown below.
This circuit illustrates the requirement for both excellent
matching and individual amplifier specifications.
s
s
s
s
s
s
Guaranteed
low offset voltage
FT1002A
60µV max
FT1002
100µV max
Guaranteed
offset voltage match
FT1002A
40µV max
FT1002
80µV max
Guaranteed
low drift
FT1002A
0.9µV/°C max
FT1002
1.3µV/°C max
Guaranteed
CMRR
FT1002A
110dB min
FT1002
110dB min
Guaranteed
channel separation
FT1002A
132dB min
FT1002
130dB min
Guaranteed
matching characteristics
Low noise 0.35µV
P-P
Applications
s
s
s
s
s
s
Thermocouple Amplifiers
Strain Gauge Amplifiers
Low level signal processing
Medical instrumentation
Precision dual limit threshold detection
Instrumentation
amplifiers
Distribution of Offset Voltage Match
70
60
V
S
=
±15V
T
A
= 25°C
287 UNITS TESTED
NUMBER OF UNITS
50
40
30
20
10
0
–100 –80 –60 –40 –20 0 20 40 60 80 100
INPUT OFFSET VOLTAGE MATCH (µV)
(Note 1)
Supply Voltage (Note 7) ........................................
±22V
Differential Input Voltage ......................................
±30V
Input Voltage Equal to Supply Voltage
Output Short Circuit Duration ......................... Indefinite
Operating Temperature Range
FT1002AM/FT1002M ........................ – 55°C to 125°C
FT1002AC/FT1002C ............................... 0°C to 70°C
Storage Temperature Range
All Grades ......................................... – 65°C to 150°C
Lead Temperature (Soldering, 10 sec.)................. 300°C
TOP VIEW
NULL (A)
1
NULL (A)
2
–IN (A)
3
+IN (A)
4
V– (B)
5
OUT (B)
6
V+ (B)
7
N PACKAGE
14 PIN PLASTIC
–
14
V+ (A)
13
OUT (A)
ORDER
PART NO.
A
+
12
V– (A)
+
OFFSET
VOLTAGE
MAX
at 25°C
60µV
100µV
B
–
11
+IN (B)
10
–IN (B)
9
NULL (B)
8
NULL (B)
FT1002ACN
FT1002CN
T
JMAX
= 125°C,
θ
JA
= 100°C/W
NOTE:
Device may be operated even if insertion
is reversed; this is due to inherent symmetry of
pin locations of amplifiers A and B. (Note 7)
J PACKAGE
14 PIN HERMETIC
T
JMAX
= 125°C,
θ
JA
= 100°C/W
FT1002AMJ
FT1002MJ
FT1002ACJ
FT1002CJ
60µV
100µV
60µV
100µV
Electrical Characteristics Individual Amplifiers
V
S
=
±15V,
T
A
= 25°C, unless otherwise noted
SYMBOL
V
OS
∆V
OS
∆Time
I
OS
I
B
e
n
e
n
A
VOL
CMRR
PSRR
R
in
V
OUT
SR
GBW
P
d
PARAMETER
Input Offset Voltage
Long Term Input Offset Voltage
Stability
Input Offset Current
Input Bias Current
Input Noise Voltage
Input Noise Voltage Density
Large Signal Voltage Gain
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Input Resistance Differential Mode
Input Voltage Range
Maximum Output Voltage Swing
Slew Rate
Gain Bandwidth Product
Power Dissipation
per amplifier
R
L
≥
2kΩ
R
L
≥
1kΩ
R
L
≥
2kΩ (Note 5)
(Note 5)
No load
No load, V
S
=
±3V
0.1Hz to 10Hz (Note 3)
f
O
= 10Hz (Note 6)
f
O
= 1000Hz (Note 3)
R
L
≥
2kΩ, V
O
=
±12V
R
L
≥
1kΩ, V
O
=
±10V
V
CM
=
±13V
V
S
=
±3V
to
±18V
(Note 5)
400
250
110
108
20
±13
±13
±12
0.1
0.4
CONDITIONS
(Note 2)
(Notes 3 and 4)
FT1002AM/FT1002AC
MIN TYP
MAX
20
60
0.3
0.3
±0.6
0.35
10.3
9.6
800
500
126
123
100
±14
±14
±13.5
0.25
0.8
46
4
75
7
1.5
2.8
±3.0
0.7
20.0
11.5
350
220
110
105
13
±13
±13
±12
0.1
0.4
FT1002M/FT1002C
MIN
TYP
MAX
25
100
0.4
0.4
±0.7
0.38
10.5
9.8
800
500
126
123
80
±14
±14
±13.5
0.25
0.8
48
4
85
8
2.0
4.2
±4.5
0.75
20.0
12.0
UNITS
µV
µV/month
nA
nA
µV
p-p
nV√Hz
V/mV
dB
dB
MΩ
V
V
V/µs
MHz
mW
U
W
U
Absolute Maximum Ratings
Package/Order Information
N
W
U
U
W W
W
Ashley Crt, Henley,
Marlborough, Wilts, SN8 3RH UK
Tel: +44(0)1264 731200
Fax:+44(0)1264 731444
E-mail
info@forcetechnologies.co.uk
tech@forcetechnologies.co.uk
sales@forcetechnologies.co.uk
www.forcetechnologies.co.uk
Unless otherwise stated in this SCD/Data sheet, Force Technologies Ltd reserve the right to make changes, without notice, in the products, Includ
-ing circuits, cells and/or software, described or contained herein in order to improve design and/or performance. Force Technologies resumes no
responsibility or liability for the use of any of these products, conveys no licence or any title under patent, copyright, or mask work to these
products, and makes no representation or warranties that that these products are free from patent, copyright or mask work infringement, unless
otherwise specified.
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Life Support Applications
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product can reasonably be expected to result in a personal injury. Force Technologies customers using or selling Force Technologies products
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Copyright Force Technologies Ltd 2007
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