a
Low Noise, Low Drift
Single-Supply Operational Amplifiers
OP113/OP213/OP413
FEATURES
Single- or Dual-Supply Operation
Low Noise: 4.7 nV/÷Hz @ 1 kHz
Wide Bandwidth: 3.4 MHz
Low Offset Voltage: 100 V
Very Low Drift: 0.2 V/؇C
Unity Gain Stable
No Phase Reversal
APPLICATIONS
Digital Scales
Multimedia
Strain Gages
Battery-Powered Instrumentation
Temperature Transducer Amplifier
PIN CONNECTIONS
8-Lead Narrow-Body SO
1
NULL
–IN A
8
NULL
1
8
NC
–IN A
2
7
V+
+IN A
3
6
OUT A
V–
NC
V+
OP113
+IN A
8-Lead Plastic DIP
4
5
NULL
OUT A
V–
5
4
NULL
NC = NO CONNECT
OP113
NC = NO CONNECT
8-Lead Narrow-Body SO
8-Lead Plastic DIP
GENERAL DESCRIPTION
The OP113 family of single supply operational amplifiers
features both low noise and drift. It has been designed for
systems with internal calibration. Often these processor-based
systems are capable of calibrating corrections for offset and gain,
but they cannot correct for temperature drifts and noise. Optimized for these parameters, the OP113 family can be used to
take advantage of superior analog performance combined with
digital correction. Many systems using internal calibration operate from unipolar supplies, usually either 5 V or 12 V. The
OP113 family is designed to operate from single supplies from 4 V
to 36 V, and to maintain its low noise and precision performance.
The OP113 family is unity gain stable and has a typical gain
bandwidth product of 3.4 MHz. Slew rate is in excess of 1 V/ms.
Noise density is a very low 4.7 nV/÷Hz, and noise in the 0.1 Hz to
10 Hz band is 120 nV p-p. Input offset voltage is guaranteed
and offset drift is guaranteed to be less than 0.8 mV/∞C. Input
common-mode range includes the negative supply and to within
1 V of the positive supply over the full supply range. Phase reversal
protection is designed into the OP113 family for cases where
input voltage range is exceeded. Output voltage swings also include
the negative supply and go to within 1 V of the positive rail. The
output is capable of sinking and sourcing current throughout
its range and is specified with 600 W loads.
Digital scales and other strain gage applications benefit from the
very low noise and low drift of the OP113 family. Other applications include use as a buffer or amplifier for both A/D and D/A
sigma-delta converters. Often these converters have high resolutions requiring the lowest noise amplifier to utilize their full
potential. Many of these converters operate in either single supply
or low supply voltage systems, and attaining the greater signal
swing possible increases system performance.
1
–IN A
8
OP213
+IN A
OUT A
V+
OUT B
4
5
+IN B
14-Lead Plastic DIP
–IN A
+IN A
8
V+
–IN A
2
7
OUT B
+IN A
3
6
–IN B
4
5
+IN B
–IN B
V–
OUT A
1
V–
OUT A
1
14 OUT D
+IN B
5
–IN B
6
OUT B
7
OUT A
1
16
OUT D
OP413
–IN A
–IN D
+IN A
+IN D
12 +IN D
3
4
16-Lead Wide-Body SO
13 –IN D
2
V+
OP213
V+
11 V–
V–
OP413
+IN C
+IN B
–IN B
–IN C
10 +IN C
OUT B
OUT C
9
–IN C
NC
8
OUT C
8
9
NC
NC = NO CONNECT
The OP113 family is specified for single 5 V and dual ± 15 V
operation over the XIND—extended industrial (–40∞C to +85∞C)
temperature range. They are available in plastic and SOIC
surface mount packages.
REV. E
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2002
