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PDF OP90 Data sheet ( Hoja de datos )
| Número de pieza | OP90 | |
| Descripción | Precision Low-Voltage Micropower Operational Amplifier | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de OP90 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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a
Precision Low-Voltage Micropower
Operational Amplifier
OP90
FEATURES
Single/Dual Supply Operation: 1.6 V to 36 V,
؎0.8 V to ؎18 V
True Single-Supply Operation; Input and Output
Voltage Ranges Include Ground
Low Supply Current: 20 A Max
High Output Drive: 5 mA Min
Low Input Offset Voltage: 150 V Max
High Open-Loop Gain: 700 V/mV Min
Outstanding PSRR: 5.6 V/V Max
Standard 741 Pinout with Nulling to V–
GENERAL DESCRIPTION
The OP90 is a high performance, micropower 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. The input voltage range includes
the negative rail allowing the OP90 to accommodate input
signals down to ground in a single-supply operation. The OP90’s
output swing also includes a ground when operating from a
single-supply, enabling “zero-in, zero-out” operation.
The OP90 draws less than 20 µA of quiescent supply current,
while able to deliver over 5 mA of output current to a load. The
input offset voltage is below 150 µV eliminating the need for
PIN CONNECTIONS
8-Lead Hermetic DIP
(Z-Suffix)
8-Lead Epoxy Mini-DIP
(P-Suffix)
8-Lead SO
(S-Suffix)
VOS NULL 1
–IN 2
8 NC
7 V+
+IN 3
V– 4
6 OUT
5 VOS NULL
NC = NO CONNECT
external nulling. Gain exceeds 700,000 and common-mode
rejection is better than 100 dB. The power supply rejection
ratio of under 5.6 µV/V minimizes offset voltage changes experi-
enced in battery-powered systems.
The low offset voltage and high gain offered by the OP90 bring
precision performance to micropower applications. The minimal
voltage and current requirements of the OP90 suit it for battery
and solar powered applications, such as portable instruments,
remote sensors, and satellites.
V+
+IN
OUTPUT
–IN
**
NULL
NULL
*ELECTRONICALLY ADJUSTED ON CHIP
FOR MINIMUM OFFSET VOLTAGE
Figure 1. Simplied Schematic
V–
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.
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
1 page  
ABSOLUTE MAXIMUM RATINGS1
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
Z Package . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C
P Package . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C
Operating Temperature Range
OP90A . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to +125°C
OP90E . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25°C to +85°C
OP90G . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to +85°C
Junction Temperature (TJ) . . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering 60 sec) . . . . . . . . . . . . . . 300°C
Package Type
JA2 JC Unit
8-Lead Hermetic DIP (Z) 148 16 °C/W
8-Lead Plastic DIP (P) 103 43 °C/W
8-Lead SO (S)
158 43 °C/W
NOTES
1Absolute Maximum Ratings apply to packaged parts, unless otherwise noted.
2JA is specified for worst-case mounting conditions; i.e., JA is specified for
device in socket for CerDIP, and P-DIP; JA is specified for devices soldered to
printed circuit board for SO package.
ORDERING GUIDE
Package Options
TA = 25؇C
VOS Max
(mV)
CERDIP
8-Lead
Plastic
8-Lead
150 OP90AZ/883*
150 OP90EZ*
450 OP90GP
450 OP90GS
*Not for new design, obsolete April 2002.
OP90
Operating
Temperature
Range
MIL
IND
XIND
XIND
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 OP90 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.
WARNING!
ESD SENSITIVE DEVICE
REV. A
–5–
5 Page 
Single-Supply Current Monitor
Current monitoring essentially consists of amplifying the voltage
drop across a resistor placed in a series with the current to be
measured. The difficulty is that only small voltage drops can be
tolerated and with low precision op amps this greatly limits the
overall resolution. The single supply current monitor of Figure 12
has a resolution of 10 µA and is capable of monitoring 30 mA of
current. This range can be adjusted by changing the current
sense resistor R1. When measuring total system current, it may
be necessary to include the supply current of the current moni-
tor, which bypasses the current sense resistor, in the final result.
This current can be measured and calibrated (together with the
residual offset) by adjustment of the offset trim potentiometer,
R2. This produces a deliberate offset that is temperature
dependent. However, the supply current of the OP90 is also
proportional to temperature and the two effects tend to track.
Current in R4 and R5, which also bypasses R1, can be accounted
for by a gain trim.
OP90
+
TO CIRCUIT
UNDER TEST
–
ITEST
R1
1⍀
V+
3
7
6
OP90EZ
2
4
5
1
R2
100k⍀
VOUT = 100mV/mA (ITEST)
R4
9.9k⍀
R5 R3
100⍀ 100k⍀
Figure 12. Single-Supply Current Monitor
REV. A
–11–
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet OP90.PDF ] | |
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