FT1112/FT1114
Dual/Quad Low Power
Precision, Picoamp Input Op Amps
Features
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Dual/Quad Low Power
Precision Picoamp Input Op Amps
Description
Offset Voltage – Prime Grade: 60µV Max
Offset Voltage – Low Cost Grade
(Including Surface Mount Dual/Quad): 75µV Max
Offset Voltage Drift: 0.5µV/°C Max
Input Bias Current: 250pA Max
0.1Hz to 10Hz Noise: 0.3µV
P-P
, 2.2pA
P-P
Supply Current per Amplifier: 400µA Max
CMRR: 120dB Min
Voltage Gain: 1 Million Min
Guaranteed Specs with
±1.0V
Supplies
Guaranteed Matching Specifications
SO-8 Package – Standard Pinout
FT1114
in Narrow Surface
Mount Package
The
FT1112
dual and
FT1114
quad op amps achieve a
new standard in combining low cost and outstanding
precision specifications.
The performance of the selected prime grades matches or
exceeds competitive devices. In the design of the
FT1112/
FT1114
however, particular emphasis has been placed on
optimising performance in the low cost plastic and SO
packages. For example, the 75µV maximum offset voltage
in these low cost packages is the lowest on any dual or
quad non-chopper op amp.
The
FT1112/FT1114
also provide a full set of matching
specifications, facilitating their use in such matching
dependent applications as two and three op amp instru-
mentation amplifiers.
Another set of specifications is furnished at
±1V
supplies.
This, combined with the low 320µA supply current per
amplifier, allows the
FT1112/FT1114
to be powered by
two nearly discharged AA cells.
Applications
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Picoampere/Microvolt Instrumentation
Two and Three Op Amp Instrumentation Amplifers
Thermocouple and Bridge Amplifiers
Low Frequency Active Filters
Photo Current Amplifiers
Battery-Powered
Systems
Distribution of Input Offset Voltage
(In All Packages)
30
V
S
=
±15V
T
A
= 25°C
25
PERCENT OF UNITS
20
15
10
5
0
–70 –50
50
30
–30 –10 10
INPUT OFFSET VOLTAGE (µV)
70
U
U
U
FT1112/FT1114
Dual/Quad Low Power
Precision Picoamp Input Op Amps
Supply Voltage .....................................................
±20V
Differential Input Current (Note 2) .....................
±10mA
Input Voltage (Equal to Supply Voltage) ...............
±20V
Output Short-Circuit Duration ......................... Indefinite
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................ 300°C
Operating Temperature Range (Note 11)
FT1112AM/FT1112M
FT1114AM/FT1114M ........................
– 55°C to 125°C
FT1112AC/FT1112C/FT1112S8
FT1114AC/FT1114C/FT1114S
.......... – 40°C to 85°C
FT1112I/FT1114I
.............................. – 40°C to 85°C
FT1112MPS8
................................... –55°C to 125°C
Specified Temperature Range (Note 12)
FT1112AM/FT1112M
FT1114AM/FT1114M .....................
... – 55°C to 125°C
FT1112AC/FT1112C/FT1112S8
FT1114AC/FT1114C/FT1114S
.......... – 40°C to 85°C
FT1112I/FT1114I
.............................. – 40°C to 85°C
FT1112MPS8
................................... –55°C to 125°C
Package/Order Information
P
TOP VIEW
OUT A 1
–IN A 2
+IN A 3
V
–
4
B
5
N8 PACKAGE
8-LEAD PDIP
+IN B
A
8
7
6
V
+
ORDER PART
NUMBER
TOP VIEW
OUT B
–IN B
FT1112ACN8
FT1112CN8
FT1112IN8
OUT A 1
–IN A 2
+IN A 3
V
–
B
4
S8 PACKAGE
8-LEAD PLASTIC SO
A
J8 PACKAGE 8-LEAD CERDIP
T
JMAX
= 160°C,
θ
JA
= 100°C/W
TOP VIEW
OUT A
–IN A
+IN A
V
+
+IN B
–IN B
OUT B
1
2
3
4
5
6
7
N PACKAGE
14-LEAD PDIP
T
JMAX
= 150°C,
θ
JA
= 110°C/W
J PACKAGE 14-LEAD CERDIP
T
JMAX
= 160°C,
θ
JA
= 80°C/W (J)
14 OUT D
A
13 –IN D
D
12 +IN D
11 V
–
B
C
10 +IN C
9
8
–IN C
OUT C
U
T
JMAX
= 150°C,
θ
JA
= 130°C/W
FT1112AMJ8
FT1112MJ8
ORDER PART
NUMBER
FT1114ACN
FT1114CN
FT1114IN
T
JMAX
= 150°C,
θ
JA
= 190°C/W
TOP VIEW
OUT A 1
–IN A 2
+IN A 3
V
+
4
B
C
A
D
16 OUT D
15 –IN D
14 +IN D
13 V
–
12 +IN C
11 –IN C
10 OUT C
9
NC
+IN B 5
–IN B 6
OUT B 7
NC 8
FT1114AMJ
FT1114MJ
S PACKAGE
16-LEAD PLASTIC SO (NARROW)
T
JMAX
= 150°C,
θ
JA
= 150°C/W
U
Absolute Maximum Ratings
(Note 1)
U
W
W W
W
U
ORDER PART
NUMBER
8
7
6
5
V
+
OUT B
–IN B
+IN B
FT1112S8
FT1112IS8
FT1112MPS8
S8 PART MARKING
1112
1112I
1112MP
ORDER PART
NUMBER
FT1114S
FT1114IS
FT1112/FT1114
Dual/Quad Low Power
Precision Picoamp Input Op Amps
Electrical Characteristics
SYMBOL PARAMETER
V
OS
∆V
OS
∆Time
I
OS
I
B
e
n
Input Offset Voltage
Long Term Input Offset
Voltage Stability
Input Offset Current
Input Bias Current
Input Noise Voltage
Input Noise Voltage Density
i
n
Input Noise Current
Input Noise Current Density
V
CM
CMRR
PSRR
R
IN
Input Voltage Range
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Minimum Supply Voltage
Input Resistance
Differential Mode
Common Mode
Large-Signal Voltage Gain
Output Voltage Swing
Slew Rate
Gain-Bandwidth Product
Supply Current per Amplifier
V
S
=
±1.0V
Channel Separation
∆V
OS
∆I
B+
∆CMRR
∆PSRR
Offset Voltage Match
Noninverting Bias Current Match
(Notes 6, 7)
Common Mode Rejection Match
Power Supply Rejection Match
f
O
= 10Hz
(Note 6)
FT1114S/FT1114IS
(Notes 6, 8)
(Notes 6, 8)
f
O
= 10kHz
V
CM
=
±13.5V
V
S
=
±1.0V
to
±20V
(Note 5)
(Note 4)
FT1114S/FT1114IS
FT1114S/FT1114IS
V
S
=
±15V,
V
CM
= 0V, T
A
= 25°C, unless otherwise noted.
FT1112AM/AC
FT1114AM/AC
MIN TYP MAX
20
40
0.3
50
±70
0.3
16
14
2.2
0.030
0.008
±13.5
120
116
±1.0
20
1000
800
±13.0
±11.0
0.16
450
50
800
5000
1500
±14.0
±12.4
0.30
750
350
320
150
35
100
117
114
136
130
100
450
113
112
400
370
±14.3
136
126
±13.5
115
114
±1.0
15
800
600
±13.0
±11.0
0.16
450
40
700
5000
1300
±14.0
±12.4
0.30
750
350
320
150
40
100
120
136
130
130
500
680
dB
dB
450
420
180
±250
0.9
28
18
60
110
CONDITIONS (Note 3)
V
S
=
±1.0V
0.1Hz to 10Hz (Note 10)
f
O
= 10Hz (Note 10)
f
O
= 1000Hz (Note 10)
0.1Hz to 10Hz
f
O
= 10Hz
f
O
= 1000Hz
A
VOL
V
OUT
SR
GBW
I
S
V
O
=
±12V,
R
L
= 10kΩ
V
O
=
±10V,
R
L
= 2kΩ
R
L
= 10kΩ
R
L
= 2kΩ
U
FT1112M/C/I
FT1114M/C/I
MIN TYP MAX
25
45
0.3
60
230
75
330
75
130
UNITS
µV
µV
µV/Mo
pA
pA
pA
pA
µV
P-P
nV/√Hz
nV/√Hz
pA
P-P
pA/√Hz
pA/√Hz
V
dB
dB
V
MΩ
GΩ
V/mV
V/mV
V
V
V/µs
kHz
µA
µA
dB
µV
pA
pA
±80
±280
±100 ±450
0.3
16
14
2.2
0.030
0.008
±14.3
136
126
0.9
28
18
U
U
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.
products, and makes no representation or warranties that that these products are free from patent, copyright or mask work infringement, unless
Life Support Applications
Force Technologies products are not designed for use in life support appliances, devices or systems where malfunction of a Force Technologies
product can reasonably be expected to result in a personal injury. Force Technologies customers using or selling Force Technologies products
for use in such applications do so at their own risk and agree to fully indemnify Force Technologies for any damages resulting from such
improper use or sale.
All trademarks acknowledged
Copyright Force Technologies Ltd 2007
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