LT1882_15 Datasheet, PDF (1/18 Pages) Linear Technology – Dual and Quad Rail-to-Rail Output, Picoamp Input Precision Op Amps

LT1881/LT1882
FEATURES
Dual and Quad
Rail-to-Rail Output, Picoamp
Input Precision Op Amps
DESCRIPTION
n _{Offset Voltage: 50μV Maximum (LT1881A)}
n _{Input Bias Current: 200pA Maximum (LT1881A)}
n _{Offset Voltage Drift: 0.8μV/°C Maximum}
n _{Rail-to-Rail Output Swing}
n _{Supply Range: 2.7V to 36V}
n _{Operates with Single or Split Supplies}
n _{Open-Loop Voltage Gain: 1 Million Minimum}
n _{1mA Maximum Supply Current Per Amplifier}
n _{Stable at AV = 1, CL = 1000pF}
n _{Standard Pinouts}
n _{Wide Operating Temperature Range:}
–55°C to 125°C (LT1882)
APPLICATIONS
n _{Thermocouple Amplifiers}
n _{Bridge Transducer Conditioners}
n _{Instrumentation Amplifiers}
n _{Battery-Powered Systems}
n _{Photo Current Amplifiers}
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
The LT^®1881 and LT1882 op amps bring high accuracy
input performance to amplifiers with rail-to-rail output
swing. Input bias currents and capacitive load driving
capabilities are superior to the similar LT1884 and LT1885
amplifiers, at the cost of a slight loss in speed. Input
offset voltage is trimmed to less than 50μV and the
low drift maintains this accuracy over the operating
temperature range. Input bias currents are an ultralow
200pA maximum.
The amplifiers work on any total power supply voltage
between 2.7V and 36V (fully specified from 5V to ±15V).
Output voltage swings to within 40mV of the negative
supply and 220mV of the positive supply make these
amplifiers good choices for low voltage single supply
operation.
Capacitive loads up to 1000pF can be driven directly in
unity-gain follower applications.
The dual LT1881 and LT1881A are available with standard
pinouts in S8 and PDIP packages. The quad LT1882 is in a
14-pin SO package. For a higher speed device with similar
DC specifications, see the LT1884/LT1885.
TYPICAL APPLICATION
16-Bit Voltage Output DAC on ± 5V Supply
5V
1.65k
LT1634
4.096V
5V
+
LT1881
–
–5V
R1
R_COM REF
R_OFS
DAC
LTC^®1597
33pF
5V
–
LT1881
+
–5V
TC V_OS Distribution, Industrial Grade
26
24 ^{VS = ±15V}
22 _{40 N8 (1 LOT)}
20 _{144 S8 (2 LOTS)}
18 _{184 TOTAL PARTS}
16
14
12
10
8
6
4
2
0
1 –0.9–0.8–0.7–0.6–0.5–0.4–0.3–0.2–0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
V_OUT
–4.096V
INPUT OFFSET VOLTAGE DRIFT (μV/°C)
18812 TA01b
TO 4.096V
18812 TA01a
18812fb
1