Analog Devices OP213, OP413, OP113 Datasheet

Low Noise, Low Drift

OP213

OUT A

–IN A
+IN A

V–

V+
OUT B
–IN B
+IN B

1

5

8

4

OP213

OUT A

–IN A

+IN A

V–

1

2

3

4

8

7

6

5

V+

OUT B

–IN B

+IN B

1

2

3
4

5
6

7

14
13

12

11

10

9

8

OP413

OUT A

–IN A

+IN A

V+ V–

OUT B

–IN B

+IN B

OUT D
–IN D

+IN D

+IN C

–IN C

OUT C

OUT C

OUT B

OP413

OUT A

–IN A
+IN A

V+

–IN B

+IN B

NC

V–

OUT D
–IN D
+IN D

+IN C
–IN C

NC

NC = NO CONNECT

116

89

OP113

OP113

NULL

–IN A

+IN A

V–

1

2

3

4

8

7

6

5

NC

V+

OUT A

NULL

NULL
–IN A
+IN A

V–

NC
V+
OUT A
NULL

NC = NO CONNECT

NC = NO CONNECT

1

5

8

4

a

Single-Supply Operational Amplifiers

FEATURES
Single- or Dual-Supply Operation
Low Noise: 4.7 nV/√Hz @ 1 kHz
Wide Bandwidth: 3.4 MHz
Low Offset Voltage: 100 mV
Very Low Drift: 0.2 mV/8C
Unity Gain Stable
No Phase Reversal

APPLICATIONS
Digital Scales
Multimedia
Strain Gages
Battery Powered Instrumentation
Temperature Transducer Amplifier

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 volts or +12
volts. The OP113 family is designed to operate from single
supplies from +4 volts to +36 volts, 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/µs.
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 µV/°C. Input
common-mode range includes the negative supply and to within
1 volt 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 volt of the
positive rail. The output is capable of sinking and sourcing
current throughout its range and is specified with 600 Ω 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

OP113/OP213/OP413

PIN CONNECTIONS

8-Lead Narrow-Body SO

8-Lead Narrow-Body SO

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.

The OP113 family is specified for single +5 volt and dual ±15
volt operation over the XIND—extended industrial (–40°C to
+85°C) temperature range. They are available in plastic and
SOIC surface mount packages.

8-Lead Plastic DIP

8-Lead Plastic DIP

16-Lead Wide-Body SO14-Lead Plastic DIP

REV. C

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
which 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: [phone] World Wide Web Site: http://www.analog.com
Fax: [phone] © Analog Devices, Inc., 1998

OP113/OP213/OP413–SPECIFICATIONS

ELECTRICAL CHARACTERISTICS

(@ VS = 615.0 V, TA = +258C unless otherwise noted)

“E” Grade “F” Grade

Parameter Symbol Conditions Min Typ Max Min Typ Max Units

INPUT CHARACTERISTICS

Offset Voltage V

OS

OP113 75 150 µV
–40°C ≤ T

≤ +85°C 125 225 µV

A

OP213 100 250 µV
–40°C ≤ T

≤ +85°C 150 325 µV

A

OP413 125 275 µV
–40°C ≤ T

Input Bias Current I

B

VCM = 0 V, 240 600 600 nA
–40°C ≤ T

Input Offset Current I

OS

VCM = 0 V
–40°C ≤ T

Input Voltage Range V

CM

Common-Mode Rejection CMR –15 V ≤ V

–15 V ≤ V
–40°C ≤ T

Large Signal Voltage Gain A

VO

OP113, OP213, RL = 600 Ω,
–40°C ≤ T
OP413, R
–40°C ≤ T
R

= 2 kΩ,

L

–40°C ≤ T
Note 1 150 300 µV

Long-Term Offset Voltage

1

V

OS

≤ +85°C 175 350 µV

A

≤ +85°C 700 700 nA

A

≤ +85°C5050nA

A

–15 +14 –15 +14 V

≤ +14 V 100 116 96 dB

CM

≤ +14 V,

CM

≤ +85°C 97 116 94 dB

A

≤ +85°C 1 2.4 1 V/µV

A

= 1 kΩ,

L

≤ +85°C 1 2.4 1 V/µV

A

≤ +85°C28 2 V/µV

A

Offset Voltage Drift ∆VOS/∆T Note 2 0.2 0.8 1.5 µV/°C

O

UTPUT CHARACTERISTICS

Output Voltage Swing High V

Output Voltage Swing Low V

Short Circuit Limit I

OH

OL

SC

RL = 2 kΩ +14 +14 V
R

= 2 kΩ,

L

–40°C ≤ T

≤ +85°C +13.9 +13.9 V

A

RL = 2 kΩ –14.5 –14.5 V
R

= 2 kΩ,

L

–40°C ≤ T

≤ +85°C –14.5 –14.5 V

A

±40 ±40 mA

POWER SUPPLY

Power Supply Rejection Ratio PSRR V

Supply Current/Amplifier I

Supply Voltage Range V

SY

S

= ± 2 V to ±18 V 103 120 100 dB

S

V

= ± 2 V to ±18 V

S

–40°C ≤ T
V

OUT

V

= ± 18 V 3 3 mA

S

–40°C ≤ T

≤ +85°C 100 120 97 dB

A

= 0 V, RL = ∞,

≤ +85°C 3.8 3.8 mA

A

+4 ±18 +4 ±18 V

AUDIO PERFORMANCE

THD + Noise VIN = 3 V rms, RL = 2 kΩ

f = 1 kHz, 0.0009 0.0009 %

Voltage Noise Density e

n

f = 10 Hz 9 9 nV/√Hz
f = 1 kHz 4.7 4.7 nV/√

Current Noise Density i

n

f = 1 kHz 0.4 0.4 pA/√Hz

Voltage Noise en p-p 0.1 Hz to 10 Hz 120 120 nV p-p

DYNAMIC PERFORMANCE

Slew Rate SR RL = 2 kΩ 0.8 1.2 0.8 1.2 V/µs
Gain Bandwidth Product GBP 3.4 3.4 MHz
Channel Separation V

Settling Time t

NOTES

1

Long-term offset voltage is guaranteed by a 1000-hour life test performed on three independent lots at 125°C, with an LTPD of 1.3.

2

Guaranteed specifications, based on characterization data.

Specifications subject to change without notice.

S

= 10 V p-p

OUT

R

= 2 kΩ, f = 1 kHz 105 105 dB

L

to 0.01%, 0 V to 10 V Step 9 9 µs

Hz

–2–

REV. C

OP113/OP213/OP413

ELECTRICAL CHARACTERISTICS

(@ VS = +5.0 V, TA = +258C unless otherwise noted)

“E” Grade “F” Grade

Parameter Symbol Conditions Min Typ Max Min Typ Max Units

INPUT CHARACTERISTICS

Offset Voltage V

OS

OP113 125 175 µV
–40°C ≤ T

≤ +85°C 175 250 µV

A

OP213 150 300 µV
–40°C ≤ T

≤ +85°C 225 375 µV

A

OP413 175 325 µV
–40°C ≤ T

Input Bias Current I

B

VCM = 0 V, V
–40°C ≤ T

Input Offset Current I

OS

VCM = 0 V, V
–40°C ≤ T

Input Voltage Range V

CM

Common-Mode Rejection CMR 0 V ≤ V

0 V ≤ V
–40°C ≤ T

Large Signal Voltage Gain A

VO

OP113, OP213, RL = 600 Ω, 2 kΩ

0.01 V ≤ V
OP413, R

0.01 V ≤ V
Note 1 200 350 µV

Long-Term Offset Voltage

1

V

OS

≤ +85°C 250 400 µV

A

= 2 300 650 650 nA

OUT

≤ +85°C 750 750 nA

A

= 2

OUT

≤ +85°C5050nA

A

0+4 +4V

≤ 4 V 93 106 90 dB

CM

≤ 4 V,

CM

≤ +85°C90 87 dB

A

≤ 3.9 V 2 2 V/µV

OUT

= 600, 2 kΩ,

L

≤ 3.9 V 1 1 V/µV

OUT

Offset Voltage Drift ∆VOS/∆T Note 2 0.2 1.0 1.5 µV/°C

O

UTPUT CHARACTERISTICS

Output Voltage Swing High V

Output Voltage Swing Low V
Short Circuit Limit I

OH

OL

SC

RL = 600 kΩ 4.0 4.0 V
R

= 100 kΩ, –40°C ≤ TA ≤ +85°C 4.1 4.1 V

L

R

= 600 Ω, –40°C ≤ TA ≤ +85°C 3.9 3.9 V

L

RL = 600 Ω, –40°C ≤ TA ≤ +85°C8 8mV
R

= 100 kΩ, –40°C ≤ TA ≤ +85°C8 8mV

L

±30 ± 30 mA

POWER SUPPLY

Supply Current I
Supply Current I

SY
SY

V

= 2.0 V, No Load 1.6 2.7 2.7 mA

OUT

–40°C ≤ TA ≤ +85°C 3.0 3.0 mA

AUDIO PERFORMANCE

THD + Noise V
Voltage Noise Density e

n

= 0 dBu, f = 1 kHz 0.001 0.001 %

OUT

f = 10 Hz 9 9 nV/√Hz
f = 1 kHz 4.7 4.7 nV/√

Current Noise Density i

n

f = 1 kHz 0.45 0.45 pA/√Hz

Voltage Noise en p-p 0.1 Hz to 10 Hz 120 120 nV p-p

DYNAMIC PERFORMANCE

Slew Rate SR R

= 2 kΩ 0.6 0.9 0.6 V/µs

L

Gain Bandwidth Product GBP 3.5 3.5 MHz
Settling Time t

NOTES

1

Long-term offset voltage is guaranteed by a 1000 hour life test performed on three independent lots at 125° C, with an LTPD of 1.3.

2

Guaranteed specifications, based on characterization data.

Specifications subject to change without notice.

S

to 0.01%, 2 V Step 5.8 5.8 µs

Hz

REV. C

–3–

OP113/OP213/OP413

ABSOLUTE MAXIMUM RATINGS

1

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±18 V

Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±18 V

Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . .±10 V

Output Short-Circuit Duration to GND . . . . . . . . . . Indefinite

Storage Temperature Range

P, S Package . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C

Operating Temperature Range

OP113/OP213/OP413E, F . . . . . . . . . . . . . . –40°C to +85°C

Junction Temperature Range

P, S Package . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C

Lead Temperature Range (Soldering, 60 sec) . . . . . . . +300°C

Package Type u

2

JA

u

JC

Units

8-Lead Plastic DIP (P) 103 43 °C/W
8-Lead SOIC (S) 158 43 °C/W
14-Lead Plastic DIP (P) 83 39 °C/W
16-Lead SOIC (S) 92 27 °C/W

NOTES

1

Absolute maximum ratings apply to both DICE and packaged parts, unless

otherwise noted.

2

θJA is specified for the worst case conditions, i.e., θJA is specified for device in socket

for cerdip, P-DIP, and LCC packages; θJA is specified for device soldered in circuit
board for SOIC package.

ORDERING GUIDE

Temperature Package Package

Model Range Description Options

OP113EP –40°C to +85°C 8-Lead Plastic DIP N-8
OP113ES –40°C to +85°C 8-Lead SOIC SO-8
OP113FP –40°C to +85°C 8-Lead Plastic DIP N-8
OP113FS –40 °C to +85°C 8-Lead SOIC SO-8

OP213EP –40 °C to +85°C 8-Lead Plastic DIP N-8
OP213ES –40°C to +85°C 8-Lead SOIC SO-8
OP213FP –40°C to +85°C 8-Lead Plastic DIP N-8
OP213FS –40 °C to +85°C 8-Lead SOIC SO-8

OP413EP –40 °C to +85°C 14-Lead Plastic DIP N-14
OP413ES –40°C to +85°C 16-Lead Wide SOIC R-16
OP413FP –40°C to +85°C 14-Lead Plastic DIP N-14
OP413FS –40 °C to +85°C 16-Lead Wide SOIC R-16

–4–

REV. C

OP113/OP213/OP413

16

2

136711 12

4

14
15

9

1

3

AD588BD

8

10

3

2

8

1

R5

1kV

A2

2N2219A

+10.000V

+15V

–15V

10mF

1/2

OP213

+10.000V

6

5

4

7

1/2

OP213

A1

R3

17.2kV

0.1%R4500V
CMRR TRIM
10-TURN

T.C. LESS THAN 50ppm/8C

OUTPUT
0 10V
F.S.

–15V

350V

LOAD

CELL

100mV
F.S.

R1

17.2kV

0.1%

R2

301V

0.1%

3

2

8

1

2N2222A

2.500V

1/2

OP295

4

2

4

6

IN

OUT

GND

REF43

R8

12.0kV

R7

20.0kV

4.000V
350V
35mV

F.S.

+5V

1/2

OP213

1

3

2

8

6

5

4

7

R4

100kV

R3

20kV

R6

27.4V

R5

2.10kV

R2

20kV

R1
100kV

1/2

OP295

R

G

= 2,127.4V

+5V

OUTPUT
0V 3.5V

APPLICATIONS

The OP113, OP213 and OP413 form a new family of high
performance amplifiers that feature precision performance in
standard dual supply configurations and, more importantly,
maintain precision performance when a single power supply is
used. In addition to accurate dc specifications, it is the lowest
noise single supply amplifier available with only 4.7 nV/
typical noise density.

Single supply applications have special requirements due to the
generally reduced dynamic range of the output signal. Single
supply applications are often operated at voltages of +5 volts or
+12 volts, compared to dual supply applications with supplies of
±12 volts or ±15 volts. This results in reduced output swings.
Where a dual supply application may often have 20 volts of
signal output swing, single supply applications are limited to, at
most, the supply range and, more commonly, several volts be­low the supply. In order to attain the greatest swing the single
supply output stage must swing closer to the supply rails than in
dual supply applications.

The OP113 family has a new patented output stage that allows
the output to swing closer to ground, or the negative supply,
than previous bipolar output stages. Previous op amps had
outputs that could swing to within about ten millivolts of the
negative supply in single supply applications. However, the
OP113 family combines both a bipolar and a CMOS device in
the output stage, enabling it to swing to within a few hundred
microvolts of ground.

When operating with reduced supply voltages, the input range is
also reduced. This reduction in signal range results in reduced
signal-to-noise ratio, for any given amplifier. There are only two
ways to improve this: increase the signal range or reduce the
noise. The OP113 family addresses both of these parameters.
Input signal range is from the negative supply to within one
volt of the positive supply over the full supply range. Com­petitive parts have input ranges that are a half a volt to five
volts less than this. Noise has also been optimized in the OP113
family. At 4.7 nV/√

Hz, it is less than one fourth that of competi-

tive devices.

Phase Reversal

The OP113 family is protected against phase reversal as long as
both of the inputs are within the supply ranges. However, if there
is a possibility of either input going below the negative supply
(or ground in the single supply case), the inputs should be pro­tected with a series resistor to limit input current to 2 mA.

OP113 Offset Adjust

The OP113 has the facility for external offset adjustment, using
the industry standard arrangement. Pins 1 and 5 are used in
conjunction with a potentiometer of 10 kΩ total resistance,
connected with the wiper to V– (or ground in single supply
applications). The total adjustment range is about ±2 mV using
this configuration.

Adjusting the offset to zero has minimal effect on offset
drift (assuming the potentiometer has a tempco of less than
1000 ppm/°C). Adjustment away from zero, however, (like all
bipolar amplifiers) will result in a TCV

3.3 µV/°C for every millivolt of induced offset.
It is therefore not generally recommended that this trim be used

to compensate for system errors originating outside of the
OP113. The initial offset of the OP113 is low enough that
external trimming is almost never required but, if necessary, the

REV. C –5–

of approximately

OS

√

2 mV trim range may be somewhat excessive. Reducing the
trimming potentiometer to a 2 kΩ value will give a more reason­able range of ±400 µV.

Hz

Figure 1. Precision Load Cell Scale Amplifier

APPLICATION CIRCUITS

A High Precision Industrial Load-Cell Scale Amplifier

The OP113 family makes an excellent amplifier for conditioning
a load-cell bridge. Its low noise greatly improves the signal reso­lution, allowing the load cell to operate with a smaller output
range, thus reducing its nonlinearity. Figure 1 shows one half of
the OP113 family used to generate a very stable 10.000 V bridge
excitation voltage while the second amplifier provides a differen­tial gain. R4 should be trimmed for maximum common-mode
rejection.

A Low Voltage Single Supply, Strain-Gage Amplifier

The true zero swing capability of the OP113 family allows the
amplifier in Figure 2 to amplify the strain-gage bridge accurately
even with no signal input while being powered by a single +5
volt supply. A stable 4.000 V bridge voltage is made possible by
the rail-to-rail OP295 amplifier, whose output can swing to
within a millivolt of either rail. This high voltage swing greatly
increases the bridge output signal without a corresponding in­crease in bridge input.

Figure 2. Single Supply Strain-Gage Amplifier