Datasheet

1
LT1077
1077fa
60µA Max Supply Current
40µV Max Offset Voltage
350pA Max Offset Current
0.5µV
P-P
0.1Hz to 10Hz Voltage Noise
2.5pA
P-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
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
Micropower, Single Supply,
Precision Op Amp
Self Buffered Micropower Reference
Distribution of Input Offset Voltage
, LTC and LT are registered trademarks of Linear Technology Corporation.
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
750k
3.6V TO 9V
3
2
0.1µF
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
7
4
6
+
LT1077
LT1077 • TA01
INPUT OFFSET VOLTAGE (µV)
–40
PERCENT OF UNITS
20
25
30
20
LT1077 • TA02
15
10
–20
–30
–10 0 40
10
30
5
0
35
V
S
= 5V, 0V
T
A
= 25°C
1072 UNITS
TESTED IN
H, J8, N8
PACKAGES
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.

Summary of content (16 pages)