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Linear Technology Electronic Components Datasheet

LT1077 Datasheet

Precision Op Amp

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LT1077
Micropower, Single Supply,
Precision Op Amp
FEATURES
60µA Max Supply Current
40µV Max Offset Voltage
350pA Max Offset Current
0.5µVP-P 0.1Hz to 10Hz Voltage Noise
2.5pAP-P 0.1Hz to 10Hz Current Noise
O.4µV/°C Offset Voltage Drift
250kHz Gain-Bandwidth Product
0.12V/µs Slew Rate
Single Supply Operation
Input Voltage Range Includes Ground
Output Swings to Ground while Sinking Current
No Pull-Down Resistors are Needed
Output Sources and Sinks 5mA Load Current
U
APPLICATIO S
Replaces OP-07, OP-77, AD707, LT1001, LT1O12
at 10 to 60 Times Lower Power
Battery or Solar Powered Systems
4mA to 2OmA Current Loops
Two Terminal Current Source
Megaohm Source Resistance Difference Amplifier
, LTC and LT are registered trademarks of Linear Technology Corporation.
DESCRIPTIO
The LT®1077 is a micropower precision operational
amplifier optimized for single supply operation at 5V. In
addition, ±15V specifications are provided.
Micropower performance of competing devices is
achieved at the expense of seriously degrading precision,
noise, speed, and output drive specifications. The LT1077
reduces supply current without sacrificing other
parameters. The offset voltage achieved is the lowest
of any micropower op amp. Offset current, voltage
and current noise, slew rate and gain-bandwidth product
are all two to ten times better than on previous micropower
op amps.
The 1/f corner of the voltage noise spectrum is at 0.7Hz.
This results in low frequency (0.1Hz to 10Hz) noise
performance which can only be found on devices with an
order of magnitude higher supply current.
The LT1077 is completely plug-in compatible (including
nulling) with all industry standard precision op amps.
Thus, it can replace these precision op amps in many
applications without sacrificing performance, yet with
significant power savings.
The LT1077 can be operated from one lithium cell or two
Ni-Cad batteries. The input range goes below ground. The
all-NPN output stage swings to ground while sinking
current—no pull-down resistors are needed.
For dual and quad op amps with similar specifications
please see the LT1078/LT1079 datasheet.
TYPICAL APPLICATIO
0.1µF
Self Buffered Micropower Reference
3.6V TO 9V
27
LT1077
3+
4
6
750k LT1034
1.2V
OUTPUT
1.230V
±1.2% MAX
SUPPLY CURRENT = 60µA MAX
SOURCES UP TO 10mA
LOAD REGULATION = 30µV/mA
TEMPERATURE DRIFT = 12ppm/°C
LT1077 • TA01
Distribution of Input Offset Voltage
35
VS = 5V, 0V
30 TA = 25°C
1072 UNITS
25 TESTED IN
H, J8, N8
20 PACKAGES
15
10
5
0
–40 –30 –20 –10 0 10 20 30 40
INPUT OFFSET VOLTAGE (µV) LT1077 • TA02
1077fa
1


Linear Technology Electronic Components Datasheet

LT1077 Datasheet

Precision Op Amp

No Preview Available !

LT1077
ABSOLUTE AXI U RATI GS (Note 1)
Supply Voltage ...................................................... ±22V
Differential Input Voltage ....................................... ±30V
Input Voltage ............... Equal to Positive Supply Voltage
Input Voltage ............5V Below Negative Supply Voltage
Output Short-Circuit Duration .......................... Indefinite
Operating Temperature Range
LT1077AM/LT1077M (OBSOLETE).... – 55°C to 125°C
LT1077AI/LT1077I.............................. – 40°C to 85°C
LT1077AC/LT1077C/LT1077S8 ............... 0°C to 70°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
VOS TRIM
8
VOS TRIM 1
7 V+
AB
–IN 2 – + + – 6 OUT
+IN 3
5 NC
4
V
H PACKAGE
8-LEAD TO-5 METAL CAN
TJMAX = 150°C, θJA = 150°C/W, θJC = 45°C/W
ORDER PART NUMBER
TOP VIEW
VOS TRIM 1
–IN 2
+IN 3
V4
8 VOS TRIM
7 V+
6 OUT
5 NC
J8 PACKAGE
8-LEAD CERDIP
TJMAX = 150°C, θJA = 100°C/W
ORDER PART NUMBER
LT1077AMH
LT1077MH
LT1077ACH
LT1077CH
LT1077AMJ8
LT1077MJ8
LT1077ACJ8
LT1077CJ8
OBSOLETE PACKAGE
Consider the N8 or S8 Package for Alternate Source
Consult LTC Marketing for parts specified with wider operating temperature ranges.
VOS TRIM 1
–IN 2
+IN 3
V4
TOP VIEW
8 VOS TRIM
7 V+
6 OUT
5 NC
N8 PACKAGE
8-LEAD PDIP
TJMAX = 100°C, θJA = 130°C/W
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 190°C/W
ORDER PART NUMBER S8 PART MARKING
LT1077S8
LT1077IS8
LT1077AIN8
LT1077IN8
LT1077ACN8
LT1077CN8
1077
1077I
LT1077 • POI01
ELECTRICAL CHARACTERISTICS VS = 5V, 0V, VCM = 0.1V, VO = 1.4V, TA = 25°C unless noted.
SYMBOL PARAMETER
CONDITIONS
LT1077AM/AI/AC
MIN TYP MAX
LT1077M/I/C/S8
MIN TYP MAX
VOS Input Offset Voltage
LT1077S8
9 40
10 60
12 150
VOS
Time
Long Term Input Offset
Voltage Stability
0.4 0.4
IOS Input Offset Current
IB Input Bias Current
en Input Noise Voltage
0.1Hz to 10Hz (Note3)
Input Noise Voltage Density
fO = 10Hz (Note 3)
fO = 1000Hz (Note3)
in Input Noise Current
0.1Hz to 10Hz (Note3)
0.06 0.35
79
0.5 1.1
28 43
27 35
2.5 4.5
0.06 0.45
7 11
0.5
28
27
2.5
UNITS
µV
µV
µV/Mo
nA
nA
µVP-P
nV/Hz
nV/Hz
pAP-P
1077fa
2


Part Number LT1077
Description Precision Op Amp
Maker Linear
Total Page 16 Pages
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