Single- or dual-supply operation
Low noise: 4.7 nV/√Hz @ 1 kHz
Wide bandwidth: 3.4 MHz
Low offset voltage: 100 μV
Very low drift: 0.2 μV/°C
Unity gain stable
No phase reversal
APPLICATIONS
Digital scales
Multimedia
Strain gages
Battery-powered instrumentation
Temperature transducer amplifier
GENERAL DESCRIPTION
The OPx13 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 OPx13 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
OPx13 family is designed to operate from single supplies from
4 V to 36 V and to maintain its low noise and precision
performance.
The OPx13 family is unity gain stable and has a typical gain
bandwidth product of 3.4 MHz. Slew rate is in excess of 1 V/s.
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 V/°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 OPx13 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 loads.
OP113/OP213/OP413
PIN CONFIGURATIONS
NULL
1
–IN A
+IN A
V–
OP113
2
TOP VIEW
3
(Not to Scale)
4
NC = NO CONNECT
Figure 1. 8-Lead Narrow-Body
SOIC_N
1
OUT A
–IN A
+IN A
V–
OP213
2
3
4
Figure 3. 8-Lead PDIP Figure 4. 16-Lead Wide-Body
Digital scales and other strain gage applications benefit from
the very low noise and low drift of the OPx13 family. Other
applications include use as a buffer or amplifier for both analogto-digital (ADC) and digital-to-analog (DAC) 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 singlesupply or low-supply voltage systems, and attaining the greater
signal swing possible increases system performance.
The OPx13 family is specified for single 5 V and dual ±15 V
o
peration over the XIND—extended industrial temperature
range (–40°C to +85°C). They are available in PDIP and SOIC
surface-mount packages.
8
7
6
5
NC
V+
OUT A
NULL
V+
8
OUT B
7
–IN B
6
+IN B
5
1
OUT A
OP213
2
–IN A
+IN A
00286-001
V–
TOP VIEW
3
(Not to Scale)
4
Figure 2. 8-Lead Narrow-Body
SOIC_N
1
OUT A
–IN A
2
+IN A
3
OP413
4
V+
TOP VIEW
(Not to Scale)
5
6
7
NC
8
NC = NO CONNECT
-
OUT B
+IN B
–IN B
SOIC_W
16
15
14
13
12
11
10
8
7
6
5
9
V+
OUT B
–IN B
+IN B
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
NC
0286-002
00286-004
Rev. F
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Anal og Devices for its use, nor for any infringements of patents or ot her
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
Changes to Ordering Guide.......................................................... 20
8/02—Rev. D to Rev. E
Edits to Figure 6.............................................................................. 13
Edits to Figure 7.............................................................................. 13
Edits to OUTLINE DIMENSIONS.............................................. 16
9/01—Rev. C to Rev. E
Edits to ORDERING GUIDE.......................................................... 4
Rev. F | Page 2 of 24
Page 3
OP113/OP213/OP413
www.BDTIC.com/ADI
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
@ VS = ±15.0 V, TA = 25°C, unless otherwise noted.
Table 1.
E Grade F Grade
Parameter Symbol Conditions Min Typ Max Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage VOS OP113 75 150 μV
−40°C ≤ TA ≤ +85°C 125 225 μV
OP213 100 250 μV
−40°C ≤ TA ≤ +85°C 150 325 μV
OP413 125 275 μV
−40°C ≤ TA ≤ +85°C 175 350 μV
Input Bias Current IB VCM = 0 V 240 600 600 nA
−40°C ≤ TA ≤ +85°C 700 700 nA
Input Offset Current IOS VCM = 0 V
−40°C ≤ TA ≤ +85°C 50 50 nA
Input Voltage Range VCM −15 +14 −15 +14 V
Common-Mode Rejection CMR −15 V ≤ VCM ≤ +14 V 100 116 96 dB
−15 V ≤ VCM ≤ +14 V,
−40°C ≤ TA ≤ +85°C 97 116 94 dB
Large-Signal Voltage Gain AVO OP113, OP213,
R
−40°C ≤ TA ≤ +85°C 1 2.4 1 V/μV
OP413, RL = 1 kΩ,
−40°C ≤ TA ≤ +85°C 1 2.4 1 V/μV
R
−40°C ≤ TA ≤ +85°C 2 8 2 V/μV
Long-Term Offset Voltage1 VOS 150 300 μV
Offset Voltage Drift2 ΔVOS/ΔT 0.2 0.8 1.5 μV/°C
OUTPUT CHARACTERISTICS
Output Voltage Swing High VOH RL = 2 kΩ 14 14 V
R
−40°C ≤ TA ≤ +85°C 13.9 13.9 V
Output Voltage Swing Low VOL RL = 2 kΩ −14.5 −14.5 V
R
−40°C ≤ TA ≤ +85°C −14.5 −14.5 V
Short-Circuit Limit ISC ±40 ±40 mA
POWER SUPPLY
Power Supply Rejection Ratio PSRR VS = ±2 V to ±18 V 103 120 100 dB
V
−40°C ≤ TA ≤ +85°C 100 120 97 dB
Supply Current/Amplifier ISY V
V
−40°C ≤ TA ≤ +85°C 3.8 3.8 mA
Supply Voltage Range VS 4 ±18 4 ±18 V
= 600 Ω,
L
= 2 kΩ,
L
= 2 kΩ,
L
= 2 kΩ,
L
= ±2 V to ±18 V
S
= 0 V, RL = ∞,
OUT
= ±18 V 3 3 mA
S
Rev. F | Page 3 of 24
Page 4
OP113/OP213/OP413
www.BDTIC.com/ADI
E Grade F Grade
Parameter Symbol Conditions Min Typ Max Min Typ Max Unit
AUDIO PERFORMANCE
THD + Noise VIN = 3 V rms, RL = 2 kΩ,
f = 1 kHz 0.0009 0.0009 %
Voltage Noise Density en f = 10 Hz 9 9 nV/√Hz
f = 1 kHz 4.7 4.7 nV/√Hz
Current Noise Density in 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
R
Settling Time tS to 0.01%, 0 V to 10 V step 9 9 μs
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.
@ VS = 5.0 V, TA = 25°C, unless otherwise noted.
Table 2.
E Grade F Grade
Parameter Symbol Conditions Min Typ Max Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage VOS OP113 125 175 μV
−40°C ≤ TA ≤ +85°C 175 250 μV
OP213 150 300 μV
−40°C ≤ TA ≤ +85°C 225 375 μV
OP413 175 325 μV
−40°C ≤ TA ≤ +85°C 250 400 μV
Input Bias Current IB VCM = 0 V, V
−40°C ≤ TA ≤ +85°C 750 750 nA
Input Offset Current IOS VCM = 0 V, V
−40°C ≤ TA ≤ +85°C 50 50 nA
Input Voltage Range VCM 0 4 4 V
Common-Mode Rejection CMR 0 V ≤ VCM ≤ 4 V 93 106 90 dB
0 V ≤ VCM ≤ 4 V,
−40°C ≤ TA ≤ +85°C 90 87 dB
Large-Signal Voltage Gain A
OP113, OP213,
VO
R
0.01 V ≤ V
OP413, RL = 600, 2 kΩ,
0.01 V ≤ V
Long-Term Offset Voltage1 V
200 350 μV
OS
Offset Voltage Drift2 ∆VOS/∆T 0.2 1.0 1.5 μV/°C
= 10 V p-p
OUT
= 2 kΩ, f = 1 kHz 105 105 dB
L
= 2 300 650 650 nA
OUT
= 2
OUT
= 600 Ω, 2 kΩ,
L
≤ 3.9 V 2 2 V/μV
OUT
≤ 3.9 V 1 1 V/μV
OUT
Rev. F | Page 4 of 24
Page 5
OP113/OP213/OP413
www.BDTIC.com/ADI
E Grade F Grade
Parameter Symbol Conditions Min Typ Max Min Typ Max Unit
OUTPUT CHARACTERISTICS
Output Voltage Swing High VOH RL = 600 kΩ 4.0 4.0 V
R
−40°C ≤ TA ≤ +85°C 4.1 4.1 V
R
−40°C ≤ TA ≤ +85°C 3.9 3.9 V
Output Voltage Swing Low VOL RL = 600 Ω,
−40°C ≤ TA ≤ +85°C 8 8 mV
R
−40°C ≤ TA ≤ +85°C 8 8 mV
Short-Circuit Limit ISC ±30 ±30 mA
POWER SUPPLY
Supply Current ISY V
I
–40°C ≤ TA ≤ +85°C 3.0 3.0 mA
SY
AUDIO PERFORMANCE
THD + Noise V
Voltage Noise Density en f = 10 Hz 9 9 nV/√Hz
f = 1 kHz 4.7 4.7 nV/√Hz
Current Noise Density in 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 RL = 2 kΩ 0.6 0.9 0.6 V/μs
Gain Bandwidth Product GBP 3.5 3.5 MHz
Settling Time tS to 0.01%, 2 V step 5.8 5.8 μs
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.
= 100 kΩ,
L
= 600 Ω,
L
= 100 kΩ,
L
= 2.0 V, no load 1.6 2.7 2.7 mA
OUT
= 0 dBu, f = 1 kHz 0.001 0.001 %
OUT
Rev. F | Page 5 of 24
Page 6
OP113/OP213/OP413
www.BDTIC.com/ADI
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter Rating
Supply Voltage ±18 V
Input Voltage ±18 V
Differential Input Voltage ±10 V
Output Short-Circuit Duration to GND Indefinite
Storage Temperature Range −65°C to +150°C
Operating Temperature Range −40°C to +85°C
Junction Temperature Range −65°C to +150°C
Lead Temperature Range (Soldering, 60 sec) 300°C
Stresses above those listed under Absolute Maximum Ratings
ma
y cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL RESISTANCE
Table 4. Thermal Resistance
Package Type θJA θ
8-Lead PDIP (P) 103 43 °C/W
8-Lead SOIC_N (S) 158 43 °C/W
16-Lead SOIC_W (S) 92 27 °C/W
Unit
JC
ESD CAUTION
Rev. F | Page 6 of 24
Page 7
OP113/OP213/OP413
www.BDTIC.com/ADI
TYPICAL PERFORMANCE CHARACTERISTICS
100
VS = ±15V
T
= 25°C
A
400 × OP AMPS
PLASTIC PACKAG E
80
150
120
VS = ±15V
–40°C ≤ T
400 × OP AMPS
PLASTIC PACKAG E
≤ +85°C
A
60
UNITS
40
20
0
–40
–50
INPUT OFFSET VOLTAGE, VOS (µV)
Figure 5. OP113 Input Offset (V
500
VS = ±15V
= 25°C
T
A
896 × OP AMPS
PLASTIC PACKAG E
400
300
UNITS
200
100
0
–80
–100
INPUT OFFSET VOLTAGE, VOS (µV)
Figure 6. OP213 Input Offset (V
500
VS = ±15V
= 25°C
T
A
1220 × OP AMPS
PLASTIC PACKAG E
400
) Distribution @ ±15 V
OS
) Distribution @ ±15 V
OS
90
UNITS
60
30
00286-005
403020100–10–20–30
50
00286-006
100
806040200–20–40–60
0
0.1
0
TCVOS (µV)
Figure 8. OP113 Temperature Drift (TCV
500
400
300
UNITS
200
100
0
0.1
0
TCVOS (µV)
Figure 9. OP213 Temperature Drift (TCV
600
500
) Distribution @ ±15 V
OS
VS = ±15V
–40°C ≤ T
896 × OP AMPS
PLASTIC PACKAG E
) Distribution @ ±15 V
OS
VS = ±15V
–40°C ≤ T
1220 × OP AMPS
PLASTIC PACKAG E
≤ +85°C
A
≤ +85°C
A
00286-008
1.0
0.90.80.70.60.50. 40.30.2
00286-009
1.0
0.90.80. 70.60.50.40.30.2
300
UNITS
200
100
0
–40
–60
INPUT OFFSET VOLTAGE, VOS (µV)
Figure 7. OP413 Input Offset (V
) Distribution @ ±15 V
OS
00286-007
140
120100806040200–20
Rev. F | Page 7 of 24
400
300
UNITS
200
100
0
00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Figure 10. OP413 Temperature Drift (TCV
TCV
(µV)
OS
) Distribution @ ±15 V
OS
00286-010
Page 8
OP113/OP213/OP413
www.BDTIC.com/ADI
1000
500
800
600
= +5V
V
S
V
400
INPUT BIAS CURRENT (nA)
200
0
–75
–50
V
= ±15V
S
V
= 0V
CM
TEMPERATURE (° C)
CM
= +2.5V
Figure 11. OP113 Input Bias Current vs. Temperature
5.0
4.5
4.0
3.5
POSITIVE OUTPUT SWING (V)
3.0
+SWING
R
= 2kΩ
L
+SWING
R
= 600Ω
L
–50
–75100
TEMPERATURE (°C)
–SWING
R
= 2kΩ
L
–SWING
R
VS = 5V
= 600Ω
L
7550250–25
Figure 12. Output Swing vs. Temperature and R
60
VS = ±15V
= 25°C
T
40
A
20
0
–20
–40
–60
–80
CHANNEL SEPARATIO N (dB)
–100
–120
101001k10k100k1M10M
105
FREQUENCY (Hz)
Figure 13. Channel Separation
VCM = 0V
1007550250–25
@ 5 V
L
125
2.0
1.5
1.0
0.5
0
125
400
300
VS = ±15V
200
INPUT BIAS CURRENT (nA)
100
00286-011
0
–75
–50
TEMPERATURE (°C)
VS = +5V
00286-014
125
1007550250–25
Figure 14. OP213 Input Bias Current vs. Temperature
15.0
V
= ±15V
S
14.5
14.0
13.5
13.0
12.5
–13.5
POSITIVE OUTPUT SWING (V)
NEGATIVE OUTPUT SWING (mV)
00286-012
–14.0
–14.5
–15.0
–75
–50
–SWING
R
= 600Ω
L
Figure 15. Output Swing v
20
18
16
14
12
10
8
6
OPEN-LOOP GAIN (V/µV)
4
2
00286-013
0
–75
–50
+SWING
R
= 2kΩ
L
+SWING
R
= 600Ω
L
TEMPERATURE (° C)
s. Temperature and R
RL = 2kΩ
RL = 600Ω
TEMPERATURE (° C)
–SWING
R
= 2kΩ
L
L
VS = 5V
V
= 3.9V
O
1007550250–25
@ ±15 V
1007550250–25
125
125
00286-015
00286-016
Figure 16. Open-Loop Gain vs. Temperature @ 5 V
Rev. F | Page 8 of 24
Page 9
OP113/OP213/OP413
www.BDTIC.com/ADI
12.5
RL = 2kΩ
10.0
7.5
5.0
OPEN-LOOP GAIN (V/µV)
2.5
0
–75
RL = 1kΩ
RL = 600Ω
TEMPERATURE (° C)
Figure 17. OP413 Open-Loop Gain vs. Temperature
100
V+ = 5V
V– = 0V
T
= 25°C
A
80
VS = ±15V
V
= ±10V
D
1007550250–25
00286-017
125–50
0
10
9
8
–50
RL = 2kΩ
RL = 600Ω
TEMPERATURE (° C)
7
6
5
4
3
OPEN-LOOP GAIN (V/µV)
2
1
0
–75
Figure 20. OP213 Open-Loop Gain vs. Temperature
100
TA = 25°C
= ±15V
V
S
80
VS = ±15V
V
= ±10V
O
1007550250–25
125
00286-020
0
60
40
PHASE
20
OPEN-LOOP GAIN (dB)
0
–20
1k10k100k1M10M
GAIN
θm = 57°
FREQUENCY (Hz)
Figure 18. Open-Loop Gain, Phase vs. Frequency @ 5 V
50
40
AV = 100
30
20
AV = 10
10
0
CLOSED-LOOP GAIN (dB)
AV = 1
–10
–20
1k10k100k1M10M
FREQUENCY (Hz)
Figure 19. Closed-Loop Gain vs. Frequency @ 5 V
V+ = 5V
V– = 0V
T
= 25°C
A
45
90
135
180
225
60
40
PHASE
PHASE (Degrees)
00286-018
20
OPEN-LOOP GAIN (dB)
0
–20
1k10k100k1M10M
Figure 21. Open-Loop Gain, Ph
50
40
AV = 100
30
20
AV = 10
10
0
CLOSED-LOOP GAIN (dB)
AV = 1
–10
00286-019
–20
1k10k100k1M10M
GAIN
θm = 72°
FREQUENCY (Hz)
ase vs. Frequency @ ±15 V
FREQUENCY (Hz)
TA = 25°C
= ±15V
V
S
45
90
135
180
225
PHASE (Degrees)
00286-021
00286-052
Figure 22. Closed-Loop Gain vs. Frequency @ ±15 V
Rev. F | Page 9 of 24
Page 10
OP113/OP213/OP413
www.BDTIC.com/ADI
70
V+ = 5V
V– = 0V
65
GBW
60
θm
PHASE MARGIN (Degrees)
55
50
–75
–50
TEMPERATURE (° C)
7550250–25
100
125
5
4
3
2
GAIN BANDWIDT H PRODUCT (MHz)
1
0286-022
Figure 23. Gain Bandwidth Product and Phase Margin vs. Temperature @ 5 V
30
25
20
15
TA = 25°C
= ±15V
V
S
70
VS = ±15V
65
60
55
PHASE MARGIN (Degrees)
50
–50
–75
GBW
θm
TEMPERATURE (°C)
7550250–25
100
125
5
4
3
2
GAIN BANDWIDT H PRODUCT (MHz)
1
00286-025
Figu re 26. Gain B andwid th Pro duct and Phase Margin vs. Temperature @ ±15 V
3.0
2.5
2.0
1.5
TA = 25°C
V
= ±15V
S
10
5
VOLTAGE NOISE DENSI TY (nV/ Hz)
0
1101001k
FREQUENCY (Hz)
Figure 24. Voltage Noise Density vs. Frequency
140
120
100
80
60
40
COMMON-MO DE REJECTIO N (dB)
20
0
1001k10k100k1M
FREQUENCY (Hz)
V+ = 5V
V– = 0V
T
Figure 25. Common-Mode Rejection vs. Frequency @ 5 V
= 25°C
A
1.0
0.5
CURRENT NOISE DENS ITY (pA/ Hz)
00286-023
0
1101001k
FREQUENCY (Hz)
00286-026
Figure 27. Current Noise Density vs. Frequency
140
120
100
80
60
40
COMMON-MO DE REJECTIO N (dB)
20
00286-024
0
FREQUENCY (Hz)
Figure 28. Common-Mode Rejectio
n vs. Frequency @ ±15 V
TA = 25°C
V
= ±15V
S
00286-027
1M1k100k10k100
Rev. F | Page 10 of 24
Page 11
OP113/OP213/OP413
www.BDTIC.com/ADI
140
120
100
80
60
40
POWER SUPPLY REJECTION (dB)
20
0
–PSRR
Figure 29. Power Supply Rejecti
6
5
4
3
2
FREQUENCY (Hz)
on vs. Frequency @ ±15 V
+PSRR
TA = 25°C
V
= ±15V
S
VS = 5V
R
= 2kΩ
L
T
= 25°C
A
A
= 1
VCL
40
30
20
IMPEDANCE (Ω)
10
00286-028
1M1k100k10k100
0
Figure 32. Closed-Loop Output I
30
25
20
15
10
AV = 100
AV = 10
FREQUENCY (Hz)
mpedance vs. Frequency @ ±15 V
TA = 25°C
V
= ±15V
S
AV = 1
VS = ±15V
= 2kΩ
R
L
= 25°C
T
A
= 1
A
VOL
00286-031
1M1k100k10k100
MAXIMUM OUTPUT SWING (V)
1
0
1k10k100k1M10M
FREQUENCY (Hz)
Figure 30. Maximum Output Swing vs. Frequency @ 5 V
50
VS = 5V
45
R
= 2kΩ
L
V
= 100mV p-p
IN
40
T
= 25°C
A
A
= 1
VCL
35
30
25
20
OVERSHOOT (%)
15
10
5
0
0
100
NEGATIVE
EDGE
POSITIVE
EDGE
LOAD CAPACITANCE (pF)
400300200
Figure 31. Small-Signal Overshoot vs. Load Capacitance @ 5 V
500
MAXIMUM OUTPUT SWING (V)
5
00286-029
0
1k10k100k1M10M
FREQUENCY (Hz)
00286-032
Figure 33. Maximum Output Swing vs. Frequency @ ±15 V
20
VS = ±15V
18
= 2kΩ
R
L
V
= 100mV p-p
IN
16
= 25°C
T
A
= 1
A
VCL
14
12
10
8
OVERSHOOT (%)
6
4
2
00286-030
0
0
100
LOAD CAPACITANCE ( pF)
POSITIVE
EDGE
NEGATIVE
EDGE
400300200
500
00286-033
Figure 34. Small-Signal Overshoot vs. Load Capacitance @ ±15 V
Rev. F | Page 11 of 24
Page 12
OP113/OP213/OP413
Ω
www.BDTIC.com/ADI
2.0
VS = 5V
0.5V ≤ V
OUT
≤ 4.0V
2.0
VS = ±15V
–10V ≤ V
OUT
≤ +10V
+SLEW RATE
1.5
+SLEW RATE
1.0
SLEW RATE (V/µs)
0.5
0
–75
–50
TEMPERATURE ( °C)
–SLEW RATE
7550250–25
Figure 35. Slew Rate vs. Temperature @ 5 V (0.5 V ≤ V
100
90
10
0%
20mV
1s
Figure 36. Input Voltage Noise @ ±15 V (20 nV/div)
100
≤ 4.0 V)
OUT
125
00286-035
1.5
1.0
SLEW RATE (V/µs)
0.5
00286-034
0
–75100
–50
TEMPERATURE (° C)
Figure 38. Slew Rate vs. Temperature @ ±15 V (–10 V ≤ V
100
90
10
0%
20mV
–SLEW RATE
7550250–25
OUT
1s
00286-037
125
≤ +10.0 V)
00286-038
Figure 39. Input Voltage Noise @ 5 V (20 nV/div)
5
4
100Ω
909
0.1Hz TO 10Hz
= 1000
A
V
Figure 37. Noise Test Diagram
A
= 100
V
t
OUT
VS = ±18V
3
2
SUPPLY CURRENT (mA)
00286-036
1
0
–75
–50
TEMPERATURE ( °C)
Figure 40. Supply Current vs. Temperature
VS = ±15V
VS = +5V
00286-039
125
1007550250–25
Rev. F | Page 12 of 24
Page 13
OP113/OP213/OP413
www.BDTIC.com/ADI
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/√Hz
typical noise density.
Single-supply applications have special requirements due to the
erally reduced dynamic range of the output signal. Single-
gen
supply applications are often operated at voltages of 5 V or 12 V,
compared to dual-supply applications with supplies of ±12 V or
±15 V. This results in reduced output swings. Where a dualsupply application may often have 20 V 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 OPx13 family has a new patented output stage that allows
th
e 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 10 mV of the negative
supply in single-supply applications. However, the OPx13
family combines both a bipolar and a CMOS device in the output
stage, enabling it to swing to within a few hundred µV of ground.
When operating with reduced supply voltages, the input range
lso reduced. This reduction in signal range results in
is a
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 OPx13 family addresses both of these
parameters. Input signal range is from the negative supply to
within 1 V of the positive supply over the full supply range.
Competitive parts have input ranges that are 0.5 V to 5 V less
than this. Noise has also been optimized in the OPx13 family.
At 4.7 nV/√Hz, the noise is less than one fourth that of competitive
devices.
PHASE REVERSAL
The OPx13 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. Pin 1 and Pin 5 are used in
conjunction with a potentiometer of 10 k 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 0 has minimal effect on offset drift
(
assuming the potentiometer has a tempco of less than
1000 ppm/°C). Adjustment away from 0, however, (as with all
bipolar amplifiers) results in a TCV
3.3 V/°C for every millivolt of induced offset.
It is, therefore, not generally recommended that this trim be
us
ed 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
2 mV trim range may be somewhat excessive. Reducing the
trimming potentiometer to a 2 k value results in a more
reasonable range of ±400 V.
of approximately
OS
Rev. F | Page 13 of 24
Page 14
OP113/OP213/OP413
V
V
www.BDTIC.com/ADI
APPLICATION CIRCUITS
A HIGH PRECISION INDUSTRIAL LOAD-CELL
SCALE AMPLIFIER
The OPx13 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 41
s
hows one half of the OPx13 family used to generate a very
stable 10 V bridge excitation voltage while the second amplifier
provides a differential gain. R4 should be trimmed for
maximum common-mode rejection.
+15
2
1
3
AD588BQ
9
CMRR TRIM
10-TURN
T.C. LE SS THAN 50pp m/°C
OUTPUT
010V
FS
2N2219A
350Ω
LOAD
CELL
R5
1kΩ
OP213
1
+10V
100mV
F.S.
1/2
8
A2
3
+
–
2
R3
17.2kΩ
0.1%
–
6
+
5
R1
17.2kΩ
0.1%
A1
–15V
+10V
4
R4
500Ω
7
1/2
OP213
R2
301Ω
0.1%
Figure 41. Precision Load-Cell Scale Amplifier
A LOW VOLTAGE, SINGLE SUPPLY STRAIN GAGE
AMPLIFIER
The true zero swing capability of the OPx13 family allows the
amplifier in Figure 42 to amplify the strain gage bridge
a
ccurately even with no signal input while being powered by a
single 5 V supply. A stable 4 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.
–15V
16
14
15
8
10
136711 124
+
10µF
00286-040
5
2
IN
6
OUT
REF43
GND
4
5V
5
+
OP295
–
6
8
1/2
4
100kΩ
OUTPUT
0V 3.5V
7
R4
00286-041
350Ω
35mV
FS
2N2222A
4V
3
2
R1
100kΩ
1
12kΩ
+
1/2
OP213
–
8
1/2
OP295
4
R8
1
R2
20kΩ
R5
2.1kΩ
RG = 2127.4Ω
2.5V
3
+
–
2
R7
20kΩ
R3
20kΩ
R6
27.4Ω
Figure 42. Single Supply Strain Gage Amplifier
A HIGH ACCURACY LINEARIZED RTD
THERMOMETER AMPLIFIER
Zero suppressing the bridge facilitates simple linearization of
the resistor temperature device (RTD) by feeding back a small
amount of the output signal to the RTD. In Figure 43, the left
leg o
f the bridge is servoed to a virtual ground voltage by
Amplifier A1, and the right leg of the bridge is servoed to 0 V
by Amplifier A2. This eliminates any error resulting from
common-mode voltage change in the amplifier. A 3-wire RTD
is used to balance the wire resistance on both legs of the bridge,
thereby reducing temperature mismatch errors. The 5 V bridge
excitation is derived from the extremely stable AD588 reference
device with 1.5 ppm/°C drift performance.
Linearization of the RTD is done by feeding a fraction of the
utput voltage back to the RTD in the form of a current. With
o
just the right amount of positive feedback, the amplifier output
will be linearly proportional to the temperature of the RTD.
Rev. F | Page 14 of 24
Page 15
OP113/OP213/OP413
V
–15V
F
V
www.BDTIC.com/ADI
10µ
100Ω
RTD
162
11
12
13
AD588BQ
4
6
7 9 8 10
+
+15
14
15
1
R3
50Ω
3
R1
8.25kΩ
R
W1
R
W2
R
W3
2
3
R2
8.25kΩ
R4
100Ω
–
A1
+
OP213
1/2
R
G
1
FULL SCALE ADJUST
R5
4.02kΩR7100Ω
+15V
8
–
6
A2
7
+
5
–15V
4
OP213
R8
49.9kΩ
1/2
V
OUT
–1.5V = –150°C
+5V = +500°C
R9
5kΩ
LINEARITY
ADJUST
@1/2 FS
(10mV/°C)
Figure 43. Ultraprecision RTD Amplifier
To calibrate the circuit, first immerse the RTD in a 0°C ice bath
or substitute an exact 100 resistor in place of the RTD. Adjust
the zero adjust potentiometer for a 0 V output, and then set R9,
linearity adjust potentiometer, to the middle of its adjustment
range. Substitute a 280.9 resistor (equivalent to 500°C) in
place of the RTD, and adjust the full-scale adjust potentiometer
for a full-scale voltage of 5 V.
To calibrate out the nonlinearity, substitute a 194.07 resistor
uivalent to 250°C) in place of the RTD, and then adjust the
(eq
linearity adjust potentiometer for a 2.5 V output. Check and
readjust the full-scale and half-scale as needed.
Once calibrated, the amplifier outputs a 10 mV/°C temperature
c
oefficient with an accuracy better than ±0.5°C over an RTD
measurement range of −150°C to +500°C. Indeed the amplifier
can be calibrated to a higher temperature range, up to 850°C.
A HIGH ACCURACY THERMOCOUPLE AMPLIFIER
Figure 44 shows a popular K-type thermocouple amplifier with
cold-junction compensation. Operating from a single 12 V
supply, the OPx13 family’s low noise allows temperature
measurement to better than 0.02°C resolution over a 0°C to
1000°C range. The cold-junction error is corrected by using an
inexpensive silicon diode as a temperature measuring device.
It should be placed as close to the two terminating junctions as
physically possible. An aluminum block might serve well as an
isothermal system.
1N4148
D1
R4
5V
R1
10.7kΩ
R2
2.74kΩ
200Ω
R3
53.6Ω
R9
124kΩ
R5
40.2kΩ
R8
453Ω
R6
–
2
OP213
+
3
12V
0.1µF
8
1/2
4
10µF
+
+
1
0V TO 10V
(0°C TO 1000°C)
00286-043
12V
0.1µF
K-TYPE
THERMOCO UPLE
40.7µV/°C
REF02EZ
26
+
4
––
++
5.62kΩ
Figure 44. Accurate K-Type Thermocouple Amplifier
R6 should be adjusted for a 0 V output with the thermocouple
measuring tip immersed in a 0°C ice bath. When calibrating, be
sure to adjust R6 initially to cause the output to swing in the
positive direction first. Then back off in the negative direction
until the output just stops changing.
00286-042
AN ULTRALOW NOISE, SINGLE SUPPLY
INSTRUMENTATION AMPLIFIER
Extremely low noise instrumentation amplifiers can be built
using the OPx13 family. Such an amplifier that operates from a
single supply is shown in Figure 45. Resistors R1 to R5 should
b
e of high precision and low drift type to maximize CMRR
performance. Although the two inputs are capable of operating
to 0 V, the gain of −100 configuration limits the amplifier input
common-mode voltage to 0.33 V.
5V TO 36
+
V
IN
–
*R1
10kΩ
*ALL RESISTORS ±0.1%, ±25ppm/°C.
+
1/2
OP213
–
*R2
10kΩ
*R
(200Ω + 12.7Ω)
10kΩ
+
1/2
OP213
–
*R3
G
*R4
10kΩ
GAIN = + 6
20kΩ
R
V
OUT
G
00286-044
Figure 45. Ultralow Noise, Single Supply Instrumentation Amplifier
SUPPLY SPLITTER CIRCUIT
The OPx13 family has excellent frequency response
characteristics that make it an ideal pseudoground reference
generator, as shown in Figure 46. The OPx13 family serves as a
v
oltage follower buffer. In addition, it drives a large capacitor
that serves as a charge reservoir to minimize transient load
changes, as well as a low impedance output device at high
frequencies. The circuit easily supplies 25 mA load current with
good settling characteristics.
Rev. F | Page 15 of 24
Page 16
OP113/OP213/OP413
V
V
5
5
V
www.BDTIC.com/ADI
R1
kΩ
R2
kΩ
+ = 5V 12
S
2
–
OP213
3
+
1/2
R3
2.5kΩ
C1
0.1µF
8
1
4
R4
100Ω
+
V
S
+
C2
1µF
OUTPUT
2
Figure 46. False Ground Generator
LOW NOISE VOLTAGE REFERENCE
Few reference devices combine low noise and high output drive
capabilities. Figure 47 shows the OPx13 family used as a two-
le active filter that band limits the noise of the 2.5 V reference.
po
Total noise measures 3 V p-p.
5
SUPPLY
1
2
3
4
5
6
7
8
V
L
LL
DL
CK
DR
LR
DGND
V
R
B
18-BIT
DAC
18-BIT
SERIAL
REG.
18-BIT
SERIAL
REG.
18-BIT
DAC
AD1868
V
V
L
V
B
16
–
15
REF
REF
+
+
–
V
AGND
VOR
O
V
7.68kΩ
14
L
330pF
13
12
11
10
7.68kΩ
9
S
330pF
Figure 48. 5 V Only 18-Bit Stereo DAC
5V
5V
2
IN
OUT
REF43
GND
4
–
10µF
+
6
10kΩ10kΩ
+
C2
10µF
2
3
8
–
1/2
OP213
+
4
1
3µV p-p NOISE
OUTPUT
2.5V
00286-046
Figure 47. Low Noise Voltage Reference
0286-045
5 V ONLY STEREO DAC FOR MULTIMEDIA
The OPx13 family’s low noise and single supply capability are
ideally suited for stereo DAC audio reproduction or sound
synthesis applications such as multimedia systems. Figure 48
s
hows an 18-bit stereo DAC output setup that is powered from a
single 5 V supply. The low noise preserves the 18-bit dynamic
range of the AD1868. For DACs that operate on dual supplies,
the OPx13 family can also be powered from the same supplies.
8
3
+
+
9.76kΩ
9.76kΩ
+
OP213
2
–
7.68kΩ
7.68kΩ
6
–
OP213
5
+
1/2
4
1/2
100pF
100pF
220µF
1
+
220µF
7
+
LEFT
CHANNEL
–
OUTPUT
47kΩ
RIGHT
CHANNEL
–
OUTPUT
47kΩ
0286-047
Rev. F | Page 16 of 24
Page 17
OP113/OP213/OP413
Ω
C
R
www.BDTIC.com/ADI
LOW VOLTAGE HEADPHONE AMPLIFIERS
Figure 49 shows a stereo headphone output amplifier for the
AD1849 16-bit SOUNDPORT® stereo codec device.
pseudo-reference voltage is derived from the common-mode
voltage generated internally by the AD1849, thus providing a
convenient bias for the headphone output amplifiers.
OPTIONAL
GAIN
1kΩ
V
REF
10µF
31
LOUT1L
AD1849
CMOUT
LOUT1R
V
19
29
REF
10µF
10kΩ
10kΩ
L VOLUME
CONTROL
R VOLUME
CONTROL
1kΩ
Figure 49. Headphone Output Amplif
V
REF
5kΩ
5V
–
1/2
OP213
+
5V
1/2
OP213
–
1/2
OP213
+
5kΩ
OPTIO NAL
GAIN
16Ω
–
+
16Ω
ier for Multimedia Sound Codec
220µF
+
47kΩ
220µF
+
47kΩ
1
The
HEADPHONE
LEFT
HEADPHONE
RIGHT
LOW NOISE MICROPHONE AMPLIFIER FOR
MULTIMEDIA
The OPx13 family is ideally suited as a low noise microphone
preamp for low voltage audio applications. Figure 50 shows a
in of 100 stereo preamp for the AD1849 16-bit SOUNDPORT
ga
stereo codec chip. The common-mode output buffer serves as a
phantom power driver for the microphones.
10k
5V
–
LEFT
ELECTRET
ONDENSE
MIC
INPUT
RIGHT
ELECTRET
CONDENSER
MIC
INPUT
20Ω
20Ω
10µF
10µF
+
5V
1/2
OP213
+
50Ω
50Ω
–
+
10kΩ
100Ω
+
OP213
–
OP213
+
100Ω10kΩ
1/2
10kΩ
1/2
17
MINL
AD1849
19
CMOUT
15
MINR
00286-049
Figure 50. Low Noise Stereo Microphone Amplifier for Multimedia Sound
Codec
PRECISION VOLTAGE COMPARATOR
With its PNP inputs and 0 V common-mode capability, the
OPx13 family can make useful voltage comparators. There is
only a slight penalty in speed in comparison to IC comparators.
However, the significant advantage is its voltage accuracy. For
example, V
with CMRR and PSRR exceeding 100 dB, while operating from
00286-048
a 5 V supply. Standard comparators like the 111/311 family
operate on 5 V, but not with common mode at ground, nor with
offset below 3 mV. Indeed, no commercially available singlesupply comparator has a V
1
SOUNDPORT is a registered trademark of Analog Devices, Inc.
can be a few hundred microvolts or less, combined
OS
less than 200 V.
OS
Rev. F | Page 17 of 24
Page 18
OP113/OP213/OP413
www.BDTIC.com/ADI
Figure 51 shows the OPx13 family response to a 10 mV
overdrive signal when operating in open loop. The top trace
shows the output rising edge has a 15 s propagation delay,
whereas the bottom trace shows a 7 s delay on the output
falling edge. This ac response is quite acceptable in many
applications.
±10mV OVERDRI VE
+2.5V
0V
–2.5V
t
t
=
= 5ms
r
f
25kΩ
100Ω
5V
+
1/2
OP113
–
The low noise and 250 V (maximum) offset voltage enhance
the overall dc accuracy of this type of comparator. Note that zerocrossing detectors and similar ground referred comparisons can be
implemented even if the input swings to −0.3 V below ground.
+IN
9V
9V
–IN
OUT
5µs
00286-051
100
2V
90
Figure 52. OP213 Simplified Schematic
10
0%
2V
0286-050
Figure 51. Precision Comparator
Rev. F | Page 18 of 24
Page 19
OP113/OP213/OP413
www.BDTIC.com/ADI
OUTLINE DIMENSIONS
0.400 (10.16)
0.365 (9.27)
0.355 (9.02)
0.210 (5.33)
MAX
0.150 (3.81)
0.130 (3.30)
0.115 (2.92)
0.022 (0.56)
0.018 (0.46)
0.014 (0.36)
8
1
0.100 (2.54)
0.070 (1.78)
0.060 (1.52)
0.045 (1.14)
BSC
5
4
0.280 (7.11)
0.250 (6.35)
0.240 (6.10)
0.015
(0.38)
MIN
SEATING
PLANE
0.005 (0.13)
MIN
0.060 (1.52)
MAX
0.015 (0.38)
GAUGE
PLANE
0.325 (8.26)
0.310 (7.87)
0.300 (7.62)
0.430 (10.92)
MAX
0.195 (4.95)
0.130 (3.30)
0.115 (2.92)
0.014 (0.36)
0.010 (0.25)
0.008 (0.20)
CONTROLL ING DIMENSIONS ARE IN INCHES; MILLIM ETER DIMENSI ONS
(IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR
REFERENCE ON LY AND ARE NO T APPROPRIATE FO R USE IN DESIG N.
CORNER LEADS MAY BE CONFIGURED AS WHOLE OR HALF L EADS .
CONTROLL ING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSI ONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ON LY AND ARE NO T APPROPRIATE FOR USE IN DESIGN.
85
1
1.27 (0.0500)
SEATING
PLANE
COMPLIANT TO JEDEC STANDARDS MS-012-A A
BSC
6.20 (0.2441)
5.80 (0.2284)
4
1.75 (0.0688)
1.35 (0.0532)
0.51 (0.0201)
0.31 (0.0122)
8°
0°
0.25 (0.0098)
0.17 (0.0067)
0.50 (0.0196)
0.25 (0.0099)
1.27 (0.0500)
0.40 (0.0157)
45°
012407-A
Figure 54. 8-Lead Standard Small Outline Package [SOIC_N]
Narrow Body
S-Suffix
(R-8)
Dimensions shown in millimeters and (inches)
Rev. F | Page 19 of 24
Page 20
OP113/OP213/OP413
C
www.BDTIC.com/ADI
0.30 (0.0 118)
0.10 (0.0039)
OPLANARITY
0.10
10.50 (0.4134)
10.10 (0.3976)
BSC
9
7.60 (0.2992)
7.40 (0.2913)
8
10.65 (0.4193)
10.00 (0.3937)
2.65 (0.1043)
2.35 (0.0925)
SEATING
PLANE
8°
0°
0.33 (0.0130)
0.20 (0.0079)
5
0
.
7
5
(0
0
.2
16
1
1.27 (0.0500)
0.51 (0.0201)
0.31 (0.0122)
CONTROLL ING DIMENSIONS ARE IN MIL L IMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MIL L IMETER EQ UIVALENTS FOR
REFERENCE ON LY AND ARE NO T APPROPRIATE FOR USE IN DESIGN.
COMPLIANT TO JEDEC STANDARDS MS-013-AA
(
0
.
0
2
9
0
0
9
.
1.27 (0.0500)
0.40 (0.0157)
5
)
45°
8
)
030707-B
Figure 55. 16-Lead Standard Small Outline Package [SOIC_W]
Wide Body
S-Suffix
(RW-16)
Dimensions shown in millimeters and (inches)
ORDERING GUIDE
Model Temperature Range Package Description Package Options
OP113ES −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP113ES-REEL −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP113ES-REEL7 −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP113ESZ1 −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP113ESZ-REEL1 −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP113ESZ-REEL71 −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP113FS −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP113FS-REEL −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP113FS-REEL7 −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP113FSZ1 −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP113FSZ-REEL1 −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP113FSZ-REEL71 −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP213ES −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP213ES-REEL −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP213ES-REEL7 −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP213ESZ1 −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP213ESZ-REEL1 −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP213ESZ-REEL71 −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP213FP −40°C to +85°C 8-Lead PDIP N-8 (P-Suffix)
OP213FPZ1 −40°C to +85°C 8-Lead PDIP N-8 (P-Suffix)
OP213FS −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP213FS-REEL −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP213FS-REEL7 −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP213FSZ1 −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP213FSZ-REEL1 −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
OP213FSZ-REEL71 −40°C to +85°C 8-Lead SOIC_N R-8 (S-Suffix)
Rev. F | Page 20 of 24
Page 21
OP113/OP213/OP413
www.BDTIC.com/ADI
Model Temperature Range Package Description Package Options
OP413ES −40°C to +85°C 16-Lead Wide Body SOIC_W RW-16 (S-Suffix)
OP413ES-REEL −40°C to +85°C 16-Lead Wide Body SOIC_W RW-16 (S-Suffix)
OP413ESZ1 −40°C to +85°C 16-Lead Wide Body SOIC_W RW-16 (S-Suffix)
OP413ESZ-REEL1 −40°C to +85°C 16-Lead Wide Body SOIC_W RW-16 (S-Suffix)
OP413FS −40°C to +85°C 16-Lead Wide Body SOIC_W RW-16 (S-Suffix)
OP413FS-REEL −40°C to +85°C 16-Lead Wide Body SOIC_W RW-16 (S-Suffix)
OP413FSZ1 −40°C to +85°C 16-Lead Wide Body SOIC_W RW-16 (S-Suffix)
OP413FSZ-REEL1 −40°C to +85°C 16-Lead Wide Body SOIC_W RW-16 (S-Suffix)