Analog Devices OP290EZ, OP290FZ, OP290GP, OP290GS, OP290AZ Datasheet

Precision, Low Power, Micropower

a

FEATURES
Single-/Dual-Supply Operation, 1.6 V to 36 V, ⴞ0.8 V to ⴞ18 V
True Single-Supply Operation; Input and Output Voltage
Ranges Include Ground
Low Supply Current (Per Amplifier), 20 ␮A Max
High Output Drive, 5 mA Min
Low Input Offset Voltage, 200 ␮V Max
High Open-Loop Gain, 700 V/mV Min
Outstanding PSRR, 5.6 ␮V/V Max
Industry Standard 8-Lead Dual Pinout
Available in Die Form

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’s out­put swing also includes ground when operating from a single
supply, enabling “zero-in, zero-out” operation.

The OP290 draws less than 20 µA of quiescent supply current
per amplifier, while able to deliver over 5 mA of output current
to a load. Input offset voltage is below 200 µV eliminating the
need for external nulling. Gain exceeds 700,000 and common-mode
rejection is better than 100 dB. The power supply rejection ratio
of under 5.6 pV/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.

Dual Operational Amplifier

OP290

PIN CONNECTIONS

16-Lead SOL

(S-Suffix)

1

–IN A

2

+IN A

3

NC

OP290

4

V–

TOP VIEW

5

NC

(Not to Scale)

6

+IN B

7

–IN B

8

NC

NC = NO CONNECT

EPOXY MINI-DIP

(P-Suffix)

8-Lead HERMETIC DIP

(Z-Suffix)

OUT A

1

A

2

–IN A

3

+IN A

4

V–

OP290

+IN A

16

NC

15

NC

14

13

V+

NC

12

NC

11

OUT B

10

NC

9

V+

8

B

OUT B

7

–IN B

6

+IN B

5

+IN

–IN

NULL

ELECTRONICALLY ADJUSTED ON CHIP
FOR MINIMUM OFFSET VOLTAGE

NULL

Figure 1. Simplified Schematic (one of two amplifiers is shown)

REV. A

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.

V+

OUTPUT

V

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] www.analog.com
Fax: [phone] © Analog Devices, Inc., 2002

OP290–SPECIFICATIONS

ELECTRICAL CHARACTERISTICS

(@ VS = ⴞ1.5 V to ⴞ15 V, TA = 25ⴗC, unless otherwise noted.)

OP290E OP290F OP290G

Parameter Symbol Conditions Min Typ Max Min Typ Max Min Typ Max Unit

INPUT OFFSET VOLTAGE

V

OS

50 200 75 300 125 500 µV

INPUT OFFSET CURRENT

I

OS

VCM = 0 V 0.1 3 0.1 5 0.1 5 nA

INPUT BIAS CURRENT

I

B

LARGE-SIGNAL A

VO

VOLTAGE GAIN R

VCM = 0 V 4.0 15 4.0 20 4.0 25 nA

VS = ± 15 V, VO = ± 10 V

= 100 kΩ 700 1200 500 1000 400 600

L

= 10 kΩ 350 600 250 500 200 400

R

L

= 2 kΩ 125 250 100 200 100 200 V/mV

R

L

V+ = 5V, V– = 0 V,

< 4 V

O

= 100 kΩ 200 400 125 300 100 250

L

= 10 kΩ 100 180 75 140 70 140

L

1

= ±5 V

S

–15/13.5 –15/13.5 –15/13.5

INPUT VOLTAGE RANGE

1

IVR V+ = 5 V, V– = 0 V 0/4 0/4 0/4 V

1 V < V
R
R

V

OUTPUT VOLTAGE SWING

V

O

V

OH

VS = ±5 V
R

= 10 kΩ±13.5± 14.2 ±13.5±14.2 ±13.5 ± 14.2 V

L

= 2 kΩ±10.5± 11.5 ±10.5±11.5 ±10.5 ± 11.5

R

L

V+ = 5 V, V– = 0 V 40 4.2 4.0 4.2 4.0 4.2 V
V+ = 5 V, V– = 0 V

V

OL

RL = 10kn 10 50 10 50 10 50 µV

COMMON-MODE CMR V+ = 5 V, V– = 0 V ttS 80 100 80 100 dB
REJECTION 0 V < V

= ±15 V, 100 120 90 120 90 120

V

S

–15 V < V

CM

< 4 V

CM

< 13.5 V

POWER SUPPLY PSRR 10 5.6 10 5.6 3.2 10 µV/V
REJECTION RATIO

SUPPLY CURRENT I

SY

(All Amplifiers) V

VS = ±1.5 V 19 30 19 30 19 30 µA

= ±15 V 25 40 25 40 25 40

S

CAPACITIVE LOAD AV = [phone] PF
STABILITY No Oscillations

e

np-p

1

fO = 0.1 Hz to 10 Hz 3 3 3 µV

p-p

INPUT NOISE VOLTAGE

VS = ±15 V

INPUT RESISTANCE
DIFFERENTIAL-MODER

INPUT RESISTANCE R

IN

INCM

VS = ±15 V 30 30 30 MΩ

VS = ±15 V 20 20 20 GΩ

COMMON-MODE

SLEW RATE SR AV = [phone] V/ms

V

= ±15 V

S

GAIN BANDWIDTH GBWP Vs = +15 V 20 20 20 kHz
PRODUCT V

CHANNEL
SEPARATION

NOTES

1

Guaranteed by CMR test.

2

Guaranteed but not 100% tested.

Specifications subject to change without notice.

2

CS fO = 10 Hz 120 150 120 150 120 150 dB

= ±15 V

S

V

= 20 Vp-p

O

VS = ±15 V

2

–2–

REV. A

OP290

ELECTRICAL CHARACTERISTICS

(@ VS = ⴞ1.5 V to ⴞ15 V, –55ⴗC ≤ TA ≤ 125ⴗC, unless otherwise noted.)

OP290A

Parameter Symbol Conditions Min Typ Max Unit

INPUT OFFSET VOLTAGE V

OS

80 500 µV

AVERAGE INPUT OFFSET
VOLTAGE DRIFT TCV

INPUT OFFSET CURRENT I

INPUT BIAS CURRENT I

OS

B

VS = 15 V 0 3 3 µV/°C

OS

VCM = 0 V 0.1 5 nA

VCM = 0 V 4.2 20 nA

LARGE-SIGNAL VS = 15 V, VO = ±10 V
VOLTAGE GAIN R

A

VO

= 100 kΩ 225 400

L

= 10 kΩ 125 240

R

L

RL = 2 kΩ 50 110
V+ = 5 V, V– = 0 V, V/mV

< 4 V

O

= 100 kΩ 100 200

L

= 10 kΩ 50 110

L

= ±15 V

S

= 10 kΩ±13 ± 14.1 V

L

= 2 kΩ±10 ± 11

L

= 2 kΩ V

L

= 10 kΩ

L

*

–15/13.5

INPUT VOLTAGE RANGE

*

OUTPUT VOLTAGE SWING V

1 V < V
R
R

IVR V+ = 5 V, V– = 0 V 0/3.5 V

V

O

VS = ±15 V
R
R

V

OH

V+ = 5 V, V– = 0 V
R

V

OL

V+ = 5 V, V– = 0 V 10 100 µV
R

COMMON-MODE REJECTION CMR V+ = 5 V, V– = 0 V, 0 V < VCM < 13.5 V 80 105 dB

V

= ±15 V, –15 V < VCM < 13.5 V 90 115

S

POWER SUPPLY PSRR 3.2 10 µV/V
REJECTION RATIO

SUPPLY CURRENT VS = ±1.5 V 30 50 µA
(All Amplifiers) IsY VS = ±15 V 38 60

NOTES

*

Guaranteed by CMR test.

Specifications subject to change without notice.

REV. A

–3–

OP290

(@ VS = ⴞ1.5 V to ⴞ15 V, –40ⴞⴗC ≤ TA ≤ 85ⴗC for OP290E/OP290F/OP290G, unless

ELECTRICAL CHARACTERISTICS

Parameter Symbol Conditions Min Typ Max Min Typ Max Min Typ Max Unit

INPUT OFFSET VOLTAGE

V

OS

AVERAGE INPUT OFFSET
VOLTAGE DRIFT

TCV

INPUT OFFSET CURRENT

I

OS

INPUT BIAS CURRENT

I

B

LARGE-SIGNAL A

VO

VOLTAGE GAIN R

INPUT VOLTAGE RANGE

IVR V+ = 5 V, V– = 0 V 0/3.5 0/3.5 0/3.5 V

OUTPUT VOLTAGE SWING

V

O

V

OH

V

OL

COMMON-MODE CMR V+ = 5 V, V– = 0 V, 85 105 80 100 80 100 dB
REJECTION 0 V < V

POWER SUPPLY PSRR 3.2 7.5 5.6 10 5.6 15 µV/V
REJECTION RATIO

SUPPLY CURRENT I

SY

(All Amplifiers) VS = ±15 V 3160 3160 3160

NOTE

*

Guaranteed by CMR test.

Specifications subject to change without notice.

= ±15 V 0.3 3 0.6 5 1.2 µV/°C

OSVS

VCM = 0 V 01 3 0.1 5 0.1 7 nA

VCM = 0 V 4.2 t5 4.2 20 4.2 25 nA

VS = ±5 V, VO = ±0 V V/mV

= 100 kΩ 500 800 350 700 300 600

L

R

= 10 kΩ 250 400 175 350 150 250

L

= 2 kΩ 100 200 75 150 75 125

R

L

V+ = 5 V, V– = 0 V,
1 V < V
R
R

*

V

O

= 100 kΩ 150 280 100 220 80 160

L

= 10 kΩ 75 140 50 110 40 90

L

= +15 V

S

VS = ±15 V
R

= 10 kΩ±13 ± 14 ± 13 ± 14 ± 13 ±14 V

L

= 2 kΩ±10 ± 11 ± 10 ± 11 ± 10 ±11

R

L

V+ = 5 V, V– = 0 V
R

= 2 kΩ 3.9 4.1 3.9 4.1 3.9 4.1 V

L

V+ = 5 V, V– = 0 V
R

= 10 kΩ 10 100 10 100 10 100 µV

L

CM

= ±15 V

V

S

–15 V < V

VS = ±1.5 V 24 50 24 50 24 50 µA

otherwise noted.)

OP290E OP290F OP290G

70 400 115 600 200 750 µV

< 4 V

*

–15/13.5 –15/13.5 –15/13.5

< 3.5 V

< 13.5 V 95 115 90 110 90 110

CM

–4–

REV. A

OP290

ABSOLUTE MAXIMUM RATINGS

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

Differential Input Voltage . . . [(V–) – 20 V] to [(V+) + 20 V]
Common-Mode Input Voltage . [(V–) – 20 V] to [(V+) + 20 V]

Output Short-Circuit Duration . . . . . . . . . . . . . . . . Indefinite

Storage Temperature Range

P, S, Z Packages . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C

Operating Temperature Range

OP290A . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to +125°C

OP290E, OP290F, OP290G . . . . . . . . . . . . . –40°C to +85°C

Junction Temperature (T

) . . . . . . . . . . . . . –65°C to +150°C

j

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

Package Type ␪

8-Lead Hermetic DIP (Z) 134 12 °C/W
8-Lead Plastic DIP (P) 96 37 °C/W
16-Lead SOL (S) 92 27 °C/W

NOTES

1

Absolute Maximum Ratings apply to both DICE and packaged parts, unless
otherwise noted.

2

␪jA is specified for worst-case mounting conditions, i.e., ␪jA is specified for

device in socket for CERDIP and P-DIP packages; ␪jA is specified for device
soldered to printed circuit board for SOL package.

1

ORDERING GUIDE

TA = 25ⴗC Package Operating

Max Cerdip Temperature

V

OS

(mV) 8-Lead Plastic Range

200 OP290AZ
200 OP290EZ
300 OP290FZ

*
*

*

500 OP290GP XIND
500 OP290GS

*Not for new designs. Obsolete April 2002.

2

jA

␪

jC

Unit

For military processed devices, please refer to the Standard
Microcircuit Drawing (SMD) available at
www.dscc.dla.mil/programs.milspec./default.asp

SMD Part Number ADI Part Number

5962-89783012A
5962-8978301PA

*Not for new designs. Obsolete April 2002.

*

*

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the OP290 features proprietary ESD protection circuitry, permanent damage may occur on devices
subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are
recommended to avoid performance degradation or loss of functionality.

*

OP290ARCMDA
OP290AZMDA

WARNING!

ESD SENSITIVE DEVICE

MIL
XIND
XIND

XIND

REV. A

–5–

OP290

100

VS = 15V

80

60

40

20

INPUT OFFSET VOLTAGE – ␮V

0

–75

TEMPERATURE – C

TPC 1. Input Offset Voltage vs.
Temperature

44

NO LOAD

40

36

32

28

24

20

16

SUPPLY CURRENT – ␮A

12

8

4

–75

VS = 15V

VS = 1.5V

TEMPERATURE – C

TPC 4. Supply Current vs.
Temperature

VS = 15V

0.14

0.12

0.1

0.08

INPUT OFFSET CURRENT – nA

0.06

1251007550–50 –25 0 25

–75

TEMPERATURE – C

1251007550–50 –25 0 25

TPC 2. Input Offset Current vs.
Temperature

600

R

= 10k⍀

L

500

400

300

200

OPEN-LOOP GAIN – V/mV

100

0

1251007550–50 –25 0 25

0

TEMPERATURE – C

TA = 25 C

TA = 85 C

TA = 125 C

30252015510

TPC 5. Open-Loop Gain vs.
Single-Supply Voltage

4.5
VS = 15V

4.4

4.3

4.2

4.1

4.0

3.9

3.8

INPUT BIAS CURRENT – nA

3.7

3.6

3.5

–75

TEMPERATURE – C

1251007550–50 –25 0 25

TPC 3. Input Bias Current vs.
Temperature

OPEN-LOOP GAIN – dB

140

120

100

80

60

40

20

0

GAIN

0

FREQUENCY – Hz

TA = 25 C

= 15V

V

s

= 100k⍀

R

L

30252015510

TPC 6. Open-Loop Gain and Phase
Shift vs. Frequency

PHASE SHIFT – Degrees

60

40

20

0

CLOSED-LOOP GAIN – dB

–20

10 100 100k

1k 10k

FREQUENCY – Hz

= 25 C

T

A

= 15V

V

s

TPC 7. Closed-Loop Gain vs.
Frequency

6

TA = 25 C
V+ = 5V, V– = 0V

5

4

3

2

1

OUTPUT VOLTAGE SWING – V

0

100 1k 10k

LOAD RESISTANCE – ⍀

TPC 8. Ouput Voltage Swing vs.
Load Resistance

–6–

100k

16

14

12

10

8

6

4

OUTPUT VOLTAGE SWING – V

2

0

100 1k 10k

LOAD RESISTANCE – ⍀

TA = 25 C
V

= 15V

s

TPC 9. Output Voltage Swing
vs. Load Resistance

100k

REV. A

Typical Performance Characteristics–OP290

140

TA = 25 C

120

100

80

60

POWER SUPPLY REJECTION – dB

40

1 10 100

NEGATIVE SUPPLY

POSITIVE SUPPLY

FREQUENCY – Hz

TPC 10. Power Supply Rejection
vs. Frequency

10

TA = 25 C

= 15V

V

S

1

CURRENT NOISE DESTINY– nV/ Hz

0.1

0.1 1 1k

10 100

FREQUENCY – Hz

140

120

100

80

60

COMMON MODE REJECTION – dB

40

1k

1 10 100

FREQUENCY – Hz

TA = 25 C

= 15V

V

S

1k

TPC 11. Common-Mode Rejection
vs. Frequency

100

90

TA = 25 C
VS = 15V
AV = +1
RL = 10k⍀
CL = 500pF

10

0%

20mV

100␮s

1,000

TA = 25 C

= 15V

V

S

100

NOISE VOLTAGE DESTINY– nV/ Hz

10

0.1 1 1k

10 100

FREQUENCY – Hz

TPC 12. Noise Voltage Density
vs. Frequency

TA = 25 C
VS = 15V
AV = +1

100

RL = 10k⍀

90

= 500pF

C

L

10

0%

5V

1ms

TPC 13. Current Noise Density
vs. Frequency

TPC 14. Small-Signal Transient
Response

TPC 15. Large-Signal Transient
Response

REV. A

–7–

OP290

+18V

100k⍀

200⍀

100k⍀

2

3

6

5

8

1/2

OP290

1/2

OP290

4

–18V

Figure 2. Burn-In Circuit

+15V

+15V

1/2

1

7

1k⍀

V

IN

OP290

A

–15V

1/2

OP290

B

9k⍀

OP37A

100⍀

CHANNEL SEPARATION = 20 LOG

10k⍀

–15V

V1 20Vp-p @ 10Hz

V2

V1

V2/1000

Figure 3. Channel Separation Test Circuit

APPLICATIONS INFORMATION BATTERY-POWERED APPLICATIONS

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 pA 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.

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 1 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.

INPUT VOLTAGE PROTECTION

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.

SINGLE-SUPPLY OUTPUT VOLTAGE RANGE

In single-supply operation the OP290’s 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 MS2
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 data sheet specification. Output current source capa­bility is maintained over the entire voltage range including ground.

APPLICATIONS TEMPERATURE TO 4–20 mA TRANSMITTER

A simple temperature to 4–20 mA transmitter is shown in Figure 5.
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 V

pins while

TEMP

the other half regulates the output current to satisfy the current
summation at its noninverting input.

VRR

I

OUT

TEMP

=

100

80

60

40

CELL VOLTAGE – V

LITHIUM SULPHUR DIOXIDE

20

0

0

+

67

()

RR

210

–

V

SET

HOURS



267

RRR



210

RR








350030002500500 1000 20001500

Figure 4. Lithium Sulphur Dioxide Cell Discharge

⍀

Characteristic with OP290 and 100 k

Loads

The change in output current with temperature is the derivative
of the transfer function:

V

∆

TEMP

RR

67

+

I

∆

OUT

=

T

∆

()

T

∆

RR

210

–8–

REV. A

OP290

From the formulas, 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.

Calibration of the transmitter is simple. First, the slope of the
output current versus temperature is calibrated by adjusting the
span trim, R7. A couple of iterations may be required to be sure
the slope is correct.

Once the span trim has been completed, the zero trim can be made.
Remember that adjusting the offset trim will not affect the gain.

The offset trim can be set at any known temperature by adjusting
R

until the output current equals:

5

I

OUT

=




T

∆



∆

OPERATING



I

FS

TTmA



()

AMBIENT MIN



– 4

+

Table I shows the values of R6 required for various tempera­ture ranges.

Table I.

Temperature Range R6 (k⍀)

0°C to +70°C10

–40°C to +85°C 6.2
–55°C to +150°C3

VARIABLE SLEW RATE FILTER

The circuit shown in Figure 6 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 which 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. Diodes D1 and 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 A2’s output
slewing at a maximum rate of:

Maximum slew rate

V

=≈

RCVRC

320632

.

D

For an input voltage slewing at a rate under this maximum slew
rate, the output simply follows the input with A1 operating in its
linear region.

REF-43BZ

V

V

V

OUT

TEMP

GND

1N4002

SPAN TRIM

V

SET

R6

3k⍀

5

1/2

OP290EZ

6

R7

5k⍀

7

R8

1k⍀

R9
100k⍀

1%, 1/2W

R10

100⍀

2

IN

6

R1

3

10k⍀

4

2

1/2

OP290EZ

8

4

V

TEMP

1

R3
100k⍀

1k⍀

R4
20k⍀

R2

R5

5k⍀

ZERO
TRIM

2N1711

I

OUT

R

LOAD

V+
8V TO 40V

Figure 5. Temperature to 4-20 mA Transmitter

REV. A

–9–

OP290

+15V

R1

250k⍀

C

0.1␮F

D

1

DIODES ARE 1N4148

1

D

2

2

1/2

OP290GP

3

R3
1M⍀

5

1/2

OP290GP

6

–15V

8

R4

25k⍀

4

1

C

4700pF

7

R2
100k⍀

1

V

OUT

Figure 6. Variable Slew Rate Filter

LOW OVERHEAD VOLTAGE REFERENCE

Figure 7 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 HV/V
with load regulation better than 10 µV/mA with up to 50 mA of
output current.

The REF-43 provides a stable 2.5 V which is multiplied by the
OP290. The PNP output transistor enables the output voltage
to approach the supply voltage.

Resistors R1 and R2 determine the output voltage.

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.

V+

2

V

IN

REF-43FZ

GND

4

6

V

OUT

BOURNS 3006P-1-201

R1B

200⍀

20-TURN

R1A

2.37⍀
1%

2

1/2

OP290GP

3

8

1

4

R2

2k⍀

1%

C

1

10␮F

2N2907A

V

OUT

C2

0.1␮F

Figure 7. Low Overhead Voltage Reference

VV

=+

OUT



25 1

.






R

2




R

1

–10–

REV. A

OP290

Revision History

Location Page

Data Sheet changed from 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. A

–11–

C00327–0–1/02(A)

–12–

PRINTED IN U.S.A.