LT1055/LT1056
1
10556fd
For more information www.linear.com/LT1055
TYPICAL APPLICATION
FEATURES DESCRIPTION
Precision, High Speed,
JFET Input Operational Amplifiers
The LT
®
1055/LT1056 JFET input operational amplifiers
combine precision specifications with high speed per-
formance.
For the first time
,
16V/µs slew rate and 6.5MHz gain
bandwidth product are simultaneously achieved with offset
voltage of typically 50µV, 1.2µV/°C drift, bias currents of
40pA at 70°C and 500pA at 125°C.
The 150µV maximum offset voltage specification is the
best available on any JFET input operational amplifier.
The LT1055 and LT1056 are differentiated by their operating
currents. The lower power dissipation LT1055 achieves
lower bias and offset currents and offset voltage. The ad
-
ditional power dissipation of the LT1056 permits higher
slew rate,
bandwidth and faster settling time with a slight
sacrifice in DC performance.
The voltage-to-frequency converter shown below is one
of the many applications which utilize both the precision
and high speed of the LT1055/LT1056.
For a JFET input op amp with 23V/µs guaranteed slew
rate, refer to the LT1022 data sheet.
APPLICATIONS
n
Guaranteed Offset Voltage: 150µV Max
–55°C to 125°C: 500µV Max
n
Guaranteed Drift: 4µV/°C Max
n
Guaranteed Bias Current
70°C: 150pA Max
125°C: 2.5nA Max
n
Guaranteed Slew Rate: 12V/µs Min
n
Available in 8-Pin PDIP and SO Packages
n
Precision, High Speed Instrumentation
n
Logarithmic Amplifiers
n
D/A Output Amplifiers
n
Photodiode Amplifiers
n
Voltage-to-Frequency Converters
n
Frequency-to-Voltage Converters
n
Fast, Precision Sample-and-Hold
L, LT, LT C , LT M, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Distribution of Input Offset Voltage
(H Package)
1Hz to 10kHz Voltage-to-Frequency Converter
+
0V TO 10V
INPUT
10kHz
TRIM
5k
4.7k
15V
2N3906
15V
–15V
LT1055/56 TA01
–15V
= 1N4148
3M
0.001 (POLYSTYRENE)
0.1µF
THE LOW OFFSET VOLTAGE OF LT1056
CONTRIBUTES ONLY 0.1Hz OF ERROR
WHILE ITS HIGH SLEW RATE PERMITS
10kHz OPERATION.
0.1µF
22k
75k
1.5k
LM329
3.3M
7
6
4
3
2
33pF
*1% FILM
OUTPUT
1Hz TO 10kHz
0.005%
LINEARITY
LT1056
INPUT OFFSET VOLTAGE (µV)
0
NUMBER OF UNITS
20
60
80
100
140
400
0
200
LT1055/56 TA02
40
120
400
200
V
S
= ±15V
T
A
= 25°C
634 UNITS TESTED
FROM THREE RUNS
50% TO ±60µV
LT1055/LT1056
2
10556fd
For more information www.linear.com/LT1055
ABSOLUTE MAXIMUM RATINGS
Supply Voltage .......................................................±20V
Differential Input Voltage ........................................±40V
Input Voltage ..........................................................±20V
Output Short-Circuit Duration .......................... Indefinite
Operating Temperature Range
LT10
55AM/LT10
55M/LT1056AM/
LT1056M
(OBSOLETE) ...................... 55°C to 125°C
LT1055AC/LT1055C/LT1056AC/
LT1056C
.................................................. C to 70°C
Storage Temperature Range
All
Devices
......................................... 65°C to 150°C
Lead Temperature (Soldering, 10 sec) ...................300°C
(Note 1)
1
2
3
4
8
7
6
5
TOP VIEW
BAL
IN
+IN
V
N/C
V
+
OUT
BAL
N8 PACKAGE
8-LEAD PDIP
T
JMAX
= 150°C, θ
JA
= 130°C/W
1
2
3
4
8
7
6
5
TOP VIEW
S8 PACKAGE
8-LEAD PLASTIC SO
BAL
IN
+IN
V
N/C
V
+
OUT
BAL
T
JMAX
= 150°C, θ
JA
= 130°C/W
TOP VIEW
NC
BALANCE
OUT
BALANCE
+IN
V
8
7
6
5
3
2
1
4
H PACKAGE
8-LEAD TO-5 METAL CAN
IN
V
+
T
JMAX
= 150°C, θ
JA
= 150°C/W, θ
JC
= 45°C/W
OBSOLETE PACKAGE
Consider the N8 for Alternate Source
PIN CONFIGURATION
LT1055/LT1056
3
10556fd
For more information www.linear.com/LT1055
ELECTRICAL CHARACTERISTICS
T
A
= 25°C. V
S
= ±15V, V
CM
= 0V unless otherwise noted.
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1055CN8#PBF LT1055CN8#TRPBF LT1055CN8 8-Lead PDIP 0°C to 70°C
LT1056CN8#PBF LT1056CN8#TRPBF LT1056CN8 8-Lead PDIP 0°C to 70°C
LT1055S8#PBF LT1055S8#TRPBF 1055 8-Lead Plastic SO 0°C to 70°C
LT1056S8#PBF LT1056S8#TRPBF 1056 8-Lead Plastic SO 0°C to 70°C
OBSOLETE PACKAGE
LT1055ACH#PBF LT1055ACH#TRPBF LT1055ACH 8-Lead TO-5 Metal Can 0°C to 70°C
LT1055CH#PBF LT1055CH#TRPBF LT1055CH 8-Lead TO-5 Metal Can 0°C to 70°C
LT1055AMH#PBF LT1055AMH#TRPBF LT1055AMH 8-Lead TO-5 Metal Can –55°C to 125°C
LT1055MH#PBF LT1055MH#TRPBF LT1055MH 8-Lead TO-5 Metal Can –55°C to 125°C
LT1056ACH#PBF LT1056ACH#TRPBF LT1056ACH 8-Lead TO-5 Metal Can 0°C to 70°C
LT1056CH#PBF LT1056CH#TRPBF LT1056CH 8-Lead TO-5 Metal Can 0°C to 70°C
LT1056AMH#PBF LT1056AMH#TRPBF LT1056AMH 8-Lead TO-5 Metal Can –55°C to 125°C
LT1056MH#PBF LT1056MH#TRPBF LT1056MH 8-Lead TO-5 Metal Can –55°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on nonstandard lead based finish parts.
For more information on lead free part markings
, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
SYMBOL PARAMETER CONDITIONS
LT1055AM/LT1056AM
LT1055AC/LT1056AC
LT1055M/LT1056M
LT1055CH/LT1056CH
LT1055CN8/LT1056CN8
UNITSMIN TYP MAX
MIN TYP MAX
V
OS
Input Offset Voltage (Note 2) LT1055 H Package
LT1056 H Package
LT1055 N8 Package
LT1056 N8 Package
50
50
150
180
70
70
120
140
400
450
700
800
µ
V
µV
µV
µV
I
OS
Input Offset Current Fully Warmed Up 2 10 2 20 pA
I
B
Input Bias Current Fully Warmed Up
V
CM
= 10V
±10
30
±50
130
±10
30
±50
150
pA
pA
Input Resistance:Differential
Input Capacitance
Common Mode
V
CM
= –11V to 8V
V
CM
= 8V to 11V
10
12
10
12
10
11
4
10
12
10
12
10
11
4
Ω
Ω
Ω
pF
e
n
Input Noise Voltage 0.1Hz to 10Hz LT1055
LT1056
1.8
2.5
2.0
2.8
µV
P-P
µV
P-P
Input Noise Voltage Density f
O
= 10Hz (Note 3)
f
O
= 1kHz (Note 4)
28
14
50
20
30
15
60
22
nV/√Hz
nV/√Hz
I
n
Input Noise Current Density f
O
= 10Hz, 1kHz (Note 5) 1.8 4 1.8 4 fA/√Hz
A
VOL
Large-Signal Voltage Gain V
O
= ±10V R
L
= 2k
R
L
= 1k
150
130
400
300
120
100
400
300
V/mV
V/mV
Input Voltage Range ±11 ±12 ±11 ±12 V
CMRR Common Mode Rejection Ratio V
CM
= ±11V 86 100 83 98 dB
PSRR Power Supply Rejection Ratio V
S
= ±10V to ±18V 90 106 88 104 dB
V
OUT
Output Voltage Swing R
L
= 2k ±12 ±13.2 ±12 ±13.2 V

LT1055S8#TRPBF

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
Precision Amplifiers Prec, Hi Speed, JFET In Op Amps
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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