1
LT1006
1006fa
The LT
1006 is the first precision single supply operational
amplifier. Its design has been optimized for single supply
operation with a full set of specifications at 5V.
Specifications at ±15V are also provided.
The LT1006 has a low offset voltage of 20V, drift of
0.2V/°C, offset current of 120pA, gain of 2.5 million,
common mode rejection of 114dB and power supply
rejection of 126dB.
Although supply current is only 340A, a novel output
stage can source or sink in excess of 20mA while retaining
high voltage gain. Common mode input range includes
ground to accommodate low ground-referenced inputs
from strain gauges or thermocouples, and output can
swing to within a few millivolts of ground. If a higher
slew rate (in excess of 1V/s) or micropower operation
(supply current down to 90A) is required, the operating
currents can be modified by connecting an external
optional resistor to Pin 8.
For similar single supply precision dual and quad op amps,
please see the LT1013/LT1014 data sheet. For micropower
dual and quad op amps, please see the LT1078/LT1079
data sheet.
LT1006 Single Supply, Micropower Sample and Hold
Precision, Single Supply
Op Amp
FEATURES
APPLICATIO S
U
DESCRIPTIO
U
■
Low Power Sample-and-Hold Circuits
■
Battery-Powered Precision Instrumentation
Strain Gauge Signal Conditioners
Thermocouple Amplifiers
■
4mA to 20mA Current Loop Transmitters
■
Active Filters
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
U
390
S3
S4
S1
9V
3
2
8
7
6
OUTPUT
4
S2
0.01F
6
8
7
2
3
4
INPUT
0V TO 5V
SAMPLE-HOLD COMMAND
HIGH = SAMPLE
LOW = HOLD
ACQUISITION TIME
20s
HOLD SETTLING TIME
10s
S-H OFFSET
1mV
HOLD SUPPLY CURRENT
250A
SAMPLE SUPPLY CURRENT
5.0mA
1kHz SAMPLE RATE CURRENT
800A
360k
1/4 CD4066
1/2 CD4066
1/4 CD4066
LT1006 TA01
+
–
A1
LT1006
+
–
A2
LT1006
Distribution of Input Offset Voltage
INPUT OFFSET VOLTAGE (V)
UNITS
(%)
12
10
16
14
20
18
LT1006 G01
8
6
4
2
0
–80
–40
40
80
0
VS = 5V, 0V
TA = 25°C
350 LT1006s TESTED
FROM TWO RUNS
J AND N PACKAGES
■
Single Supply Operation
Input Voltage Range Extends to Ground
Output Swings to Ground while Sinking Current
■
Guaranteed Offset Voltage: 50V Max
■
Guaranteed Low Drift: 1.3V/°C Max
■
Guaranteed Offset Current: 0.5nA Max
■
Guaranteed High Gain
5mA Load Current: 1.5 Million Min
17mA Load Current: 0.8 Million Min
■
Guaranteed Low Supply Current: 520A Max
■
Supply Current can be Reduced by a Factor of 4
■
Low Voltage Noise, 0.1Hz to 10Hz: 0.55VP-P
Low Current Noise—
Better than OP-07: 0.07pA/√Hz at 10Hz
■
High Input Impedance: 250M Min
■
Minimum Supply Voltage: 2.7V Min