OPZ290GPZ [ADI]
IC DUAL OP-AMP, 750 uV OFFSET-MAX, 0.02 MHz BAND WIDTH, PDIP8, MO-095AA, PLASTIC, DIP-8, Operational Amplifier;
| 型号： | OPZ290GPZ |
| 厂家： | 
ADI |
| 描述： | IC DUAL OP-AMP, 750 uV OFFSET-MAX, 0.02 MHz BAND WIDTH, PDIP8, MO-095AA, PLASTIC, DIP-8, Operational Amplifier 放大器 光电二极管 |
| 文件： | 总12页 (文件大小：277K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Precision, Low Power, Micropower
Dual Operational Amplifier
OP290
FEATURES
PIN CONNECTIONS
OP290
Single-/dual-supply operation: 1.6 V to 36 V, 0.8 V to 18 V
True single-supply operation; input and output voltage
Input/output ranges include ground
Low supply current (per amplifier), 20 µA maximum
High output drive, 5 mA minimum
1
2
3
4
OUT A
–IN A
+IN A
V–
8
7
6
5
V+
OUT B
–IN B
+IN B
A
–
B
+
+
–
Low input offset voltage, 200 µV typical
High open-loop gain, 400 V/mV minimum
Outstanding PSRR, 5.6 µV/V maximum
Figure 1. PDIP (P-Suffix)
Industry standard 8-Mead dual pinout
GENERAL DESCRIPTION
The OP290 is a high performance micropower dual op amp that
operates from a single supply of 1.6 V to 36 V or from dual
supplies of 0.8 V to 18 V. Input voltage range includes the
negative rail allowing the OP290 to accommodate input signals
down to ground in single-supply operation. The OP290 output
swing also includes ground when operating from a single
supply, enabling zero-in, zero-out operation.
common-mode rejection is better than 100 dB. The power
supply rejection ratio of under 5.6 μV/V minimizes offset
voltage changes experienced in battery-powered systems. The
low offset voltage and high gain offered by the OP290 bring
precision performance to micropower applications. The
minimal voltage and current requirements of the OP290 suit it
for battery- and solar-powered applications, such as portable
instruments, remote sensors, and satellites. For a single op amp,
see the OP90; for a quad, see the OP490.
The OP290 draws less than 20 μA of quiescent supply current
per amplifier, while being able to deliver over 5 mA of output
current to a load. Input offset voltage is below 200 μV, eliminat-
ing the need for external nulling. Gain exceeds 700,000 and
V+
+IN
–IN
OUTPUT
NULL
NULL
V–
ELECTRONICALLY ADJUSTED ON CHIP
FOR MINIMUM OFFSET VOLTAGE
Figure 2. Simplified Schematic (One of Two Amplifiers Is Shown)
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
rightsof third parties that may result fromits 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 andregisteredtrademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©1988–2009 Analog Devices, Inc. All rights reserved.
OP290
TABLE OF CONTENTS
Features .............................................................................................. 1
Battery-Powered Applications.....................................................9
Input Voltage Protection ..............................................................9
Single-Supply Output Voltage Range..........................................9
Applications Information.............................................................. 10
Temperature to 4 mA to 20 mA Transmitter.......................... 10
Variable Slew Rate Filter............................................................ 11
Low Overhead Voltage Reference ............................................ 11
Outline Dimensions....................................................................... 12
Ordering Guide .......................................................................... 12
Pin Connections ............................................................................... 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Characteristics............................................................. 3
Absolute Maximum Ratings............................................................ 5
ESD Caution.................................................................................. 5
Typical Performance Characteristics ............................................. 6
Theory of Operation ........................................................................ 9
REVISION HISTORY
4/09—Rev. B to Rev. C
12/03—Rev. A to Rev. B
Updated Format..................................................................Universal
Changes to Features Section and Figure 2..................................... 1
Changes to Input Voltage Range, Vs = 5 V Parameter,
Deleted OP290E and OP290F...........................................Universal
Replaced Pin Connections with PDIP............................................1
Deleted Electrical Characteristics ...................................................3
Changes to Absolute Maximum Ratings........................................4
Changes to Ordering Guide.............................................................4
Changes to TPC 6..............................................................................5
Change to Single Supply Output Voltage Range ...........................7
Changes to Figure 5...........................................................................8
Changes to Figure 6...........................................................................9
Change to Low Overhead Voltage Reference ................................9
Updated Outline Dimensions....................................................... 10
Table 1 ................................................................................................ 3
Changes to Figure 7 and Figure 8................................................... 6
Deleted Figure 2; Renumbered Sequentially................................. 7
Changes to Figure 9.......................................................................... 7
Changed Applications Information Heading to Theory of
Operation........................................................................................... 9
Changes to Figure 19........................................................................ 9
Changed Applications Heading to Applications Information.. 10
Changes to Temperature to 4 mA to 20 mA Transmitter Section,
Figure 20, and Table 5 .................................................................... 10
Changes to Figure 21 and Figure 22............................................. 11
Updated Outline Dimensions....................................................... 12
Changes to Ordering Guide .......................................................... 12
1/02—Rev. 0 to Rev. A
Edits to Ordering Information ........................................................1
Edits to Pin Connections..................................................................1
Edits to Absolute Maximum Ratings..............................................2
Edits to Package Type .......................................................................2
Edits to Wafer Test Limits ................................................................5
Edits to Dice Characteristics............................................................5
Rev. C | Page 2 of 12
OP290
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
VS = 1.5 V to 15 V, TA = 25°C, unless otherwise noted.
Table 1.
OP290G
Typ
Parameter
Symbol Conditions
Min
Max
500
5
Unit
μV
INPUT OFFSET VOLTAGE
INPUT OFFSET CURRENT
INPUT BIAS CURRENT
LARGE-SIGNAL VOLTAGE GAIN
VOS
IOS
IB
125
VCM = 0 V
0.1
nA
VCM = 0 V
4.0
25
nA
AVO
VS = 15 V, VO = 10 V
RL = 100 kΩ
400
200
100
600
400
200
V/mV
V/mV
V/mV
RL = 10 kΩ
RL = 2 kΩ
V+ = 5 V, V− = 0 V, 1 V < VO < 4 V
RL = 100 kΩ
RL = 10 kΩ
100
70
250
140
V/mV
V/mV
V
INPUT VOLTAGE RANGE1
OUTPUT VOLTAGE SWING
IVR
VO
V+ = 5 V, V −= 0 V
VS = 5 V
0/4
−5/+3.5
V
VS = 5 V
RL = 10 kΩ
RL = 2 kΩ
V+ = 5 V, V− = 0 V
RL = 10 kΩ
13.5
10.5
4.0
14.2
11.5
4.2
50
V
V
V
μV
VOH, VOL
CMR
10
COMMON-MODE REJECTION
V+ = 5 V, V− = 0 V, 0 V < VCM < 4 V
VS = 15 V, −15 V < VCM < +13.5 V
80
90
100
120
3.2
19
dB
dB
POWER SUPPLY REJECTION RATIO
SUPPLY CURRENT (ALL AMPLIFIERS)
PSRR
ISY
10
30
40
μV/V
μA
μA
VS = 1.5 V
VS = 15 V
25
CAPACITIVE LOAD STABILITY
INPUT NOISE VOLTAGE1
AV = +1, no oscillations
fO = 0.1 Hz to 10 Hz, VS = 15 V
VS = 15 V
650
3
pF
en p-p
μV p-p
MΩ
GΩ
V/ms
kHz
dB
INPUT RESISTANCE DIFFERENTIAL MODE RIN
30
INPUT RESISTANCE COMMON MODE
SLEW RATE
RINCM
VS = 15 V
20
SR
AV = +1, VS = 15 V
VS = 15 V
5
12
GAIN BANDWIDTH PRODUCT
CHANNEL SEPARATION2
GBWP
CS
20
fO = 10 Hz, VO = 20 V p-p, VS = 15 V
120
150
1 Guaranteed by CMR test.
2 Guaranteed but not 100% tested.
Rev. C | Page 3 of 12
OP290
VS = 1.5 V to 15 V, −40°C ≤ TA ≤ +85°C, unless otherwise noted.
Table 2.
OP290G
Typ
200
Parameter
Symbol
VOS
Conditions
Min
Max
Unit
μV
INPUT OFFSET VOLTAGE
AVERAGE INPUT OFFSET VOLTAGE DRIFT
INPUT OFFSET CURRENT
INPUT BIAS CURRENT
750
TCVOS
IOS
VS = 15 V
1.2
μV/°C
nA
VCM = 0 V
0.1
7
IB
VCM = 0 V
4.2
25
nA
LARGE-SIGNAL VOLTAGE GAIN
AVO
VS = 5 V, VO = 0 V
RL = 100 kΩ
300
150
75
600
250
125
V/mV
V/mV
V/mV
RL = 10 kΩ
RL = 2 kΩ
V+ = 5 V, V− = 0 V, 1 V < VO < 4 V
RL = 100 kΩ
RL = 10 kΩ
80
40
160
90
V/mV
V/mV
V
INPUT VOLTAGE RANGE1
OUTPUT VOLTAGE SWING
IVR
VO
V+ = 5 V, V− = 0 V
VS = +15 V
0/3.5
–15/+13.5
V
VS = 15 V
RL = 10 kΩ
RL = 2 kΩ
13
10
14
11
V
V
VOH
VOL
V+ = 5 V, V − = 0 V, RL = 2 kΩ
V+ = 5 V, V − = 0 V, RL = 10 kΩ
V+ = 5 V, V − = 0 V, 0 V <VCM < 3.5 V
VS = 15 V, −15 V < VCM < 13.5 V
3.9
4.1
10
V
100
μV
dB
dB
μV/V
μA
μA
COMMON-MODE REJECTION
CMR
80
90
100
110
5.6
24
POWER SUPPLY REJECTION RATIO
SUPPLY CURRENT (ALL AMPLIFIERS)
PSRR
ISY
15
50
60
VS = 1.5 V
VS = 15 V
31
1 Guaranteed by CMR test.
Rev. C | Page 4 of 12
OP290
ABSOLUTE MAXIMUM RATINGS
Stresses above those listed under Absolute Maximum Ratings
Table 3.
may 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.
Parameter1
Rating
Supply Voltage
18 V
Differential Input Voltage
Common-Mode Input Voltage
Output Short-Circuit Duration
Storage Temperature Range
Operating Temperature Range
[(V−) − 20 V] to [(V+) + 20 V]
[(V−) − 20 V] to [(V+) + 20 V]
Indefinite
−65°C to +150°C
−40°C to +85°C
Table 4.
Package Type
1
Junction Temperature Range (TJ) −65°C to +150°C
θJA
θJC
Unit
Lead Temperature
(Soldering, 60 sec)
300°C
8-Lead Plastic DIP (P)
96
37
°C/W
1 θJA is specified for worst-case mounting conditions, that is, θJA is specified for
device in socket for PDIP package.
1 Absolute maximum ratings applies to packaged part.
ESD CAUTION
Rev. C | Page 5 of 12
OP290
TYPICAL PERFORMANCE CHARACTERISTICS
100
44
40
36
32
28
24
20
16
12
8
V
= ±15V
NO LOAD
S
80
60
40
20
0
V
= ±15V
S
V
= ±1.5V
S
4
–75
–50
–25
0
25
50
75
100
125
–75
–50
–25
0
25
50
75
100
125
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 3. Input Offset Voltage vs. Temperature
Figure 6. Supply Current vs. Temperature
600
500
400
300
200
100
0
0.15
0.14
0.13
0.12
0.11
0.10
0.09
0.08
0.07
0.06
0.05
R
= 10kΩ
V
= ±15V
L
S
T
= 25°C
A
T
T
= 85°C
A
A
= 125°C
0
5
10
15
20
25
30
–75
–50
–25
0
25
50
75
100
125
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
Figure 7. Open-Loop Gain vs. Supply Voltage
Figure 4. Input Offset Current vs. Temperature
140
120
100
80
4.5
4.4
4.3
4.2
4.1
4.0
3.9
3.8
3.7
3.6
3.5
V
T
R
= ±15V
= 25°C
= 10kΩ
V
= ±15V
S
A
S
L
0
GAIN
45
PHASE
60
90
40
135
180
20
0
0.1
1
10
100
1k
10k
100k
–75
–50
–25
0
25
50
75
100
125
FREQUENCY (Hz)
TEMPERATURE (°C)
Figure 8. Open-Loop Gain and Phase Shift vs. Frequency
Figure 5. Input Bias Current vs. Temperature
Rev. C | Page 6 of 12
OP290
60
40
140
120
100
80
T
V
= 25°C
= ±15V
T = 25°C
A
A
S
NEGATIVE SUPPLY
POSITIVE SUPPLY
G = 100
G = 10
G = 1
20
0
60
–20
10
40
100
1k
10k
100k
1
10
100
1k
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 9. Closed-Loop Gain vs. Frequency
Figure 12. Power Supply Rejection vs. Frequency
6
5
4
3
2
1
0
140
120
100
80
T
= 25°C
T = 25°C
A
A
V+ = 5V
V– = 0V
V = ±15V
S
60
40
100
1k
10k
100k
1
10
100
FREQUENCY (Hz)
1k
LOAD RESISTANCE (Ω)
Figure 10. Output Voltage Swing vs. Load Resistance
Figure 13. Common-Mode Rejection vs. Frequency
16
14
12
10
8
1k
100
10
T
V
= 25°C
= ±15V
A
T
V
= 25°C
= ±15V
A
S
S
6
4
2
0
100
1k
10k
100k
0.1
1
10
100
1k
LOAD RESISTANCE (Ω)
FREQUENCY (Hz)
Figure 11. Output Voltage Swing vs. Load Resistance
Figure 14. Noise Voltage Density vs. Frequency
Rev. C | Page 7 of 12
OP290
10
T
V
= 25°C
= ±15V
A
S
T
V
A
R
C
= 25°C
= ±15V
= +1
= 10kΩ
= 500pF
A
S
V
L
L
100
90
1
10
0%
0.1
0.1
5V
1ms
1
10
100
1k
FREQUENCY (Hz)
Figure 17. Large-Signal Transient Response
Figure 15. Current Noise Density vs. Frequency
100
90
T
V
A
R
C
= 25°C
= ±15V
= +1
= 10kΩ
= 500pF
A
S
V
L
L
10
0%
20mV
100µs
Figure 16. Small-Signal Transient Response
Rev. C | Page 8 of 12
OP290
THEORY OF OPERATION
BATTERY-POWERED APPLICATIONS
INPUT VOLTAGE PROTECTION
The OP290 can be operated on a minimum supply voltage of
1.6 V, or with dual supplies of 0.8 V, and draws only 19 µA of
supply current. In many battery-powered circuits, the OP290
can be continuously operated for thousands of hours before
requiring battery replacement, reducing equipment downtime
and operating cost.
The OP290 uses a PNP input stage with protection resistors in
series with the inverting and noninverting inputs. The high
breakdown of the PNP transistors coupled with the protection
resistors provide a large amount of input protection, allowing
the inputs to be taken 20 V beyond either supply without
damaging the amplifier.
High performance portable equipment and instruments
frequently use lithium cells because of their long shelf-life, light
weight, and high energy density relative to older primary cells.
Most lithium cells have a nominal output voltage of 3 V and are
noted for a flat discharge characteristic. The low supply voltage
requirement of the OP290, combined with the flat discharge
characteristic of the lithium cell, indicates that the OP290 can
be operated over the entire useful life of the cell. Figure 18
shows the typical discharge characteristic of a 1 Ah lithium cell
powering an OP290, with each amplifier, in turn, driving full
output swing into a 100 kΩ load.
SINGLE-SUPPLY OUTPUT VOLTAGE RANGE
In single-supply operation, the OP290 input and output ranges
include ground. This allows true zero-in, zero-out operation.
The output stage provides an active pull-down to around 0.8 V
above ground. Below this level, a load resistance of up to 1 MΩ
to ground is required to pull the output down to zero.
In the region from ground to 0.8 V, the OP290 has voltage gain
equal to the specification in Table 1. Output current source
capability is maintained over the entire voltage range including
ground.
100
80
60
40
20
0
0
500
1000
1500
2000
2500
3000
3500
HOURS
Figure 18. Lithium Sulphur Dioxide Cell Discharge Characteristic with OP290
and 100 kΩ Load
+15V
+15V
1/2
OP290
A
1kΩ
V2
OP37
9kΩ
10kΩ
100Ω
–15V
–15V
V
IN
1/2
V1 20V p-p @ 10Hz
OP290
B
V1
CHANNEL SEPARATION = 20 log
V2/1000
Figure 19. Channel Separation Test Circuit
Rev. C | Page 9 of 12
OP290
APPLICATIONS INFORMATION
Calibration of the transmitter is simple. First, the slope of the
output current vs. temperature is calibrated by adjusting the
span trim, R7. A couple of iterations may be required to ensure
that the slope is correct.
TEMPERATURE TO 4 MA TO 20 mA TRANSMITTER
A simple temperature to 4 mA to 20 mA transmitter is shown in
Figure 20. After calibration, the transmitter is accurate to +0.5°C
over the −50°C to +150°C temperature range. The transmitter
operates from 8 V to 40 V with supply rejection better than
3 ppm/V. One half of the OP290 is used to buffer the VTEMP pin
while the other half regulates the output current to satisfy the
current summation at its noninverting input.
Once the span trim has been completed, the zero trim can be
made. Remember that adjusting the offset trim does not affect
the gain. The offset trim can be set at any known temperature
by adjusting R5 until the output current equals
∆IFS
∆TOPERATING
V
TEMP (R6 + R7)
R2 ×R6 ×R7
R2 ×R10
IOUT
=
(
TA −TMIN + 4 mA
)
IOUT
=
−V
(1)
SET
R2 ×R10
Table 5 shows the values of R6 that are required for various
temperature ranges.
The change in output current with temperature is the derivative
of the following transfer function:
Table 5.
Temperature Range
∆VTEMP
∆T
(R6 + R7)
∆IOUT
∆T
R6 (k Ω)
=
(2)
0°C to +70°C
10
6.2
3
R2 ×R10
−40°C to +85°C
−50°C to +150°C
From Equation 1 and Equation 2, it can be seen that if the span
trim is adjusted before the zero trim, the two trims are not
interactive, which greatly simplifies the calibration procedure.
1N4002
V+
8V TO 40V
SPAN TRIM
R6
3kΩ
R4
2
20kΩ
V
R7
5kΩ
2
3
IN
8
1/2
6
3
4
V
TEMP
V
6
5
1
OUT
R8
OP290GP
REF43
R2
1kΩ
R1
1/2
1kΩ
7
V
TEMP
GND
4
2N1711
OP290GP
10kΩ
V
SET
R5
5kΩ
R3
100kΩ
R9
100kΩ
ZERO
TRIM
R10
100Ω
1%, 1/2W
I
OUT
R
L
Figure 20. Temperature to 4 mA to 20 mA Transmitter
Rev. C | Page 10 of 12
OP290
VARIABLE SLEW RATE FILTER
LOW OVERHEAD VOLTAGE REFERENCE
The circuit shown in Figure 21 can be used to remove pulse
noise from an input signal without limiting the response rate to
a genuine signal. The nonlinear filter has use in applications
where the input signal of interest is known to have physical
limitations. An example of this is a transducer output where a
change of temperature or pressure cannot exceed a certain rate
due to physical limitations of the environment. The filter consists
of a comparator that drives an integrator. The comparator
compares the input voltage to the output voltage and forces
the integrator output to equal the input voltage. A1 acts as a
comparator with its output high or low. Diode D1 and Diode
D2 clamp the voltage across R3, forcing a constant current to
flow in or out of C2. R3, C2, and A2 form an integrator with the
output of A2 slewing at a maximum rate of
Figure 22 shows a voltage reference that requires only 0.1 V of
overhead voltage. As shown, the reference provides a stable
4.5 V output with a 4.6 V to 36 V supply. Output voltage drift is
only 12 ppm/°C. Line regulation of the reference is under
5 μV/V with load regulation better than 10 μV/mA with up to
50 mA of output current.
The REF43 provides a stable 2.5 V that is multiplied by the
OP290. The PNP output transistor enables the output voltage to
approach the supply voltage.
Resistor R1 and Resistor R2 determine the output voltage.
R2
R1
VOUT
=
2.5 V 1+
The 200 Ω variable resistor is used to trim the output voltage.
For the lowest temperature drift, parallel resistors can be used
in place of the variable resistor and taken out of the circuit as
required to adjust the output voltage.
0.6 V
VD
Maximum slew rate =
≈
R3 ×C2 R3× C2
For an input voltage slewing at a rate under this maximum slew
V+
rate, the output simply follows the input with A1 operating in
its linear region.
2
+15V
V
IN
R1
250kΩ
8
2
3
REF43FZ
8
2
3
6
V
C1
0.1µF
OUT
1/2
A1
1
1/2
1
OP290GP
2N2907A
GND
4
OP290GP
R2
100kΩ
4
V
OUT
R2
R1A
2kΩ
2.37Ω
1%
R3
1%
C1
10µF
C2
0.1µF
1MΩ
R4
C2
4700pF
R1B
200Ω
25kΩ
20-TURN
D2
D1
BOURNS 3006P-1-201
6
1/2
A2
7
V
OUT
OP290GP
Figure 22. Low Overhead Voltage Reference
5
4
DIODES ARE 1N4148
–15V
Figure 21. Variable Slew Rate Filter
Rev. C | Page 11 of 12
OP290
OUTLINE DIMENSIONS
0.400 (10.16)
0.365 (9.27)
0.355 (9.02)
8
1
5
4
0.280 (7.11)
0.250 (6.35)
0.240 (6.10)
0.325 (8.26)
0.310 (7.87)
0.300 (7.62)
0.100 (2.54)
BSC
0.060 (1.52)
MAX
0.195 (4.95)
0.130 (3.30)
0.115 (2.92)
0.210 (5.33)
MAX
0.015
(0.38)
MIN
0.150 (3.81)
0.130 (3.30)
0.115 (2.92)
0.015 (0.38)
GAUGE
0.014 (0.36)
0.010 (0.25)
0.008 (0.20)
PLANE
SEATING
PLANE
0.022 (0.56)
0.018 (0.46)
0.014 (0.36)
0.430 (10.92)
MAX
0.005 (0.13)
MIN
0.070 (1.78)
0.060 (1.52)
0.045 (1.14)
COMPLIANT TO JEDEC STANDARDS MS-001
CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
CORNER LEADS MAY BE CONFIGURED AS WHOLE OR HALF LEADS.
Figure 23. 8-Lead Plastic Dual In-Line Package [PDIP]
[P-Suffix]
(N-8)
Dimensions shown in inches and (millimeters)
ORDERING GUIDE
Model
TA = 25°C VOS Max (mV)
Temperature Range
−40°C to +85°C
−40°C to +85°C
Package Description
8-Lead Plastic PDIP
8-Lead Plastic PDIP
Package Option
P-Suffix (N-8)
P-Suffix (N-8)
OP290GP
OP290GPZ1
500
500
1 Z = RoHS Compliant Part.
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