OP270F(RevA) Просмотр технического описания (PDF) - Analog Devices
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OP270F Datasheet PDF : 16 Pages
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Dual Very Low Noise Precision
Operational Amplifier
OP270
FEATURES
Very Low Noise 5nV/÷Hz @ 1 kHz Max
Excellent Input Offset Voltage 75 V Max
Low Offset Voltage Drift 1 V/؇C Max
Very High Gain 1500 V/V Min
Outstanding CMR 106 dB Min
Slew Rate 2.4V/ms Typ
Gain-Bandwidth Product 5 Hz Typ
Industry Standard 8-Lead Dual Pinout
GENERAL DESCRIPTION
The OP270 is a high-performance monolithic dual operational
amplifier with exceptionally low voltage noise, 5n÷Hz at 1kHz Max,
offering comparable performance to ADI’s industry standard OP27.
The OP270 features an input offset voltage below 75 mV and an
offset drift under 1 mV/∞C, guaranteed over the full military tempera-
ture range. Open-loop gain of the OP270 is over 1,500,000 into a
10 kW load insuring excellent gain accuracy and linearity, even in
high-gain applications. Input bias current is under 20 nA which
reduces errors due to signal source resistance. The OP270’s CMR of
over 106 dB and PSRR of less than 3.2 mV/V significantly reduce
errors due to ground noise and power supply fluctuations. Power
consumption of the dual OP270 is one-third less than two OP27s,
a significant advantage for power conscious applications. The
OP270 is unity-gain stable with a gain bandwidth product of 5 MHz
and a slew rate of 2.4 V/ms.
CONNECTION DIAGRAMS
16-LEAD SOL
EPOXY MINI-DIP (P-Suffix)
(S-Suffix)
8-LEAD HERMETIC DIP
–IN A 1
+IN A 2
NC 3
V– 4
NC 5
+IN B 6
–IN B 7
NC 8
16 OUT A
15 NC
14 NC
13 V+
12 NC
11 NC
10 OUT B
9 NC
(Z”Suffix)
OUT A 1
–IN A 2
+IN A 3
V– 4
8 V+
A B 7 OUT B
6 –IN B
5 +IN B
NC = NO CONNECT
The OP270 offers excellent amplifier matching which is important
for applications such as multiple gain blocks, low noise instrumen-
tation amplifiers, dual buffers, and low-noise active filters.
The OP270 conforms to the industry standard 8-lead DIP pinout. It
is pin-compatible with the MC1458, SE5532/A, RM4558, and
HA5102 dual op amps, and can be used to upgrade systems using
these devices.
For higher speed applications the OP271, with a slew rate of 8 V/ms, is
recommended. For a quad op amp, see the OP470.
FUNCTIONAL BLOCK DIAGRAM
(One of Two Amplifiers Is Shown)
V+
BIAS
–IN
+IN
OUT
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–
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Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2002
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