OP297 Fast Delivery |IC PHOENIX CO.,LIMITED

OP297 ,Dual Low Bias Current Precision Operational AmplifierCHARACTERISTICS S A OP297E OP297F OP297GParameter Symbol Conditions Min Typ Max Min Typ Max Min ..
OP297 ,Dual Low Bias Current Precision Operational Amplifierapplications, including instru-mentation amplifiers, log amplifiers, photodiode preamplifiersPrecis ..
OP297AZ ,Dual Low Bias Current Precision Operational AmplifierSpecifications subject to change without notice.–2– REV. D8/21/97 4:00 PMOP297(@ V = 615 V, –408C £ ..
OP297AZ/883 ,DUAL LOW BIAS CURRENT PRECISION OPERATIONAL AMPLIFIERapplications including instrumenta- tion amplifiers, log amplifiers, photo-diode preamplifiers and ..
OP297EZ ,Dual Low Bias Current Precision Operational AmplifierCHARACTERISTICS S A␣␣␣␣ OP297A/E ␣␣␣␣ OP297F ␣␣␣␣␣ OP297GParameter Symbol Conditions Min Typ Max Mi ..
OP297EZ ,Dual Low Bias Current Precision Operational AmplifierFEATURES PIN CONNECTIONSPrecision Performance in Standard SO-8 PinoutPlastic Epoxy-DIP (P Suffix)Lo ..
P401 ,400V 40A 2 SCR Traverse Bridge in a PACE-Pak packageApplications include power supplies, control cir-cuits and battery chargers.Major Ratings and Chara ..
P402 ,600V 40A 2 SCR Traverse Bridge in a PACE-Pak packageBulletin I2776 rev. E 04/99P400 SERIESPASSIVATED ASSEMBLED CIRCUIT ELEMENTS
P403 ,800V 40A 2 SCR Traverse Bridge in a PACE-Pak packageApplications include power supplies, control cir-cuits and battery chargers.Major Ratings and Chara ..
P40-G240-WH , P40-G Series TBU® High-Speed Protectors
P40-G240-WH , P40-G Series TBU® High-Speed Protectors
P40NF10L ,N-CHANNEL 100VELECTRICAL CHARACTERISTICS (TCASE = 25 °C UNLESS OTHERWISE SPECIFIED)OFFSymbol Parameter Test Condi ..

OP297
Dual Low Bias Current Precision Operational Amplifier
REV.D
Dual Low Bias Current
Precision Operational Amplifier
PIN CONNECTIONS
8-Lead Plastic DIP
8-Lead Cerdip
8-Lead Narrow Body SOIC
FEATURES
Low Offset Voltage: 50 �V Max
Low Offset Voltage Drift: 0.6 �V/�C Max
Very Low Bias Current: 100 pA Max
Very High Open-Loop Gain: 2000 V/mV Min
Low Supply Current (Per Amplifier): 625 �A Max
Operates From �2 V to �20 V Supplies
High Common-Mode Rejection: 120 dB Min
Pin Compatible to LT1013, AD706, AD708, OP221,
LM158 and MC1458/1558 with Improved Performance
APPLICATIONS
Strain Gauge and Bridge Amplifiers
High Stability Thermocouple Amplifiers
Instrumentation Amplifiers
Photo-Current Monitors
High Gain Linearity Amplifiers
Long-Term Integrators/Filters
Sample-and-Hold Amplifiers
Peak Detectors
Logarithmic Amplifiers
Battery Powered Systems
GENERAL DESCRIPTION
The OP297 is the first dual op amp to pack precision perfor-
mance into the space-saving, industry standard, 8-lead SOIC
package. Its combination of precision with low power and ex-
tremely low input bias current makes the dual OP297 useful in
a wide variety of applications.
Precision performance of the OP297 includes very low offset,
under 50 mV, and low drift, below 0.6 mV/∞C. Open-loop gain
exceeds 2000 V/mV, ensuring high linearity in every application.
Errors due to common-mode signals are eliminated by the
OP297’s common-mode rejection of over 120 dB, which mini-
mizes offset voltage changes experienced in battery powered
systems. Supply current of the OP297 is under 625 mA per
amplifier and it can operate with supply voltages as low as ±2
The OP297 uses a super-beta input stage with bias current
cancellation to maintain picoamp bias currents at all tempera-
tures. This is in contrast to FET input op amps whose bias
currents start in the picoamp range at 25∞C, but double for
every 10∞C rise in temperature, to reach the nanoamp range
above 85∞C. Input bias current of the OP 297 is under 100 pA
at 25∞C and is under 450 pA over the military temperature
range.
Combining precision, low power and low bias current, the
OP297 is ideal for a number of applications, including instru-
mentation amplifiers, log amplifiers, photodiode preamplifiers
and long-term integrators. For a single device, see the OP97;
for a quad, see the OP497.
Figure 1.Low Bias Current Over Temperature
Figure 2.Very Low Offset
OP297–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
Input Noise Current Density
Input Resistance
Common-Mode Rejection
Power Supply Rejection
Output Voltage Swing
Supply Current Per Amplifier
Slew Rate
Gain Bandwidth Product
NOTES
1Guaranteed by CMR test.
Specifications subject to change without notice.
(@ VS = �15 V, TA = +25�C, unless otherwise noted.)
OP297
ELECTRICAL CHARACTERISTICS
Large-Signal Voltage Gain
Input Voltage Range
Common-Mode Rejection
Supply Current Per Amplifier
NOTES
1Guaranteed by CMR test.
Specifications subject to change without notice.
(@ VS = �15 V, –40�C £ TA £ +85�C for OP297E/F/G, unless otherwise noted.)
OP297
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000V readily
accumulate on the human body and test equipment and can discharge without detection.
ABSOLUTE MAXIMUM RATINGS
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±20 V
Input Voltage2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±20 V
Differential Input Voltage1 . . . . . . . . . . . . . . . . . . . . . . . .40 V
Output Short-Circuit Duration . . . . . . . . . . . . . . . .Indefinite
Storage Temperature Range
Z Package . . . . . . . . . . . . . . . . . . . . . . . . .–65∞C to +175∞C
P, S Packages . . . . . . . . . . . . . . . . . . . . . .–65∞C to +150∞C
Operating Temperature Range
OP297E (Z) . . . . . . . . . . . . . . . . . . . . . . . .–40∞C to +85∞C
OP297F, G (P, S) . . . . . . . . . . . . . . . . . . .–40∞C to +85∞C
Junction Temperature
Z Package . . . . . . . . . . . . . . . . . . . . . . . . .–65∞C to +175∞C
P, S Packages . . . . . . . . . . . . . . . . . . . . . .–65∞C to +150∞C
Lead Temperature Range (Soldering, 60 sec) . . . . . . .+300∞C
NOTESFor supply voltages less than ±20 V, the absolute maximum input voltage is equal
to the supply voltage.qJA is specified for worst case mounting conditions, i.e., qJA is specified for device in
socket for cerdip and plastic DIP, packages; qJA is specified for device soldered to
printed circuit board for SOIC package.
ORDERING GUIDE
OP297FP
OP297FS
OP297FS-REEL
OP297FS-REEL7
OP297GP
OP297GS
OP297GS-REEL
Figure 3.Channel Separation Test Circuit

INPUT OFFSET VOLTAGE – pA
NUMBER OF UNITS–100–8060–60–40–2002040
400
Figure 4.Typical Distribution of Input
Offset Voltage

Figure 7.Input Bias, Offset Current
vs. Temperature
Figure 10.Effective Offset Voltage
vs. Source Resistance
INPUT BIAS CURRENT – pA
NUMBER OF UNITS–100–8060–60–40–2002040
100100
Figure 5.Typical Distribution of Input
Bias Current
INPUT CURRENT – pA
COMMON-MODE VOLTAGE – Volts
–10–5051015
Figure 8.Input Bias, Offset Current
vs. Common-Mode Voltage
Figure 11.Effective TCVOS vs. Source
Resistance–100
NUMBER OF UNITS
INPUT OFFSET VOLTAGE – pA
–8060–60–40–200204080100
Figure 6.Typical Distribution of In-
put Offset Current
Figure 9.Input Offset Voltage Warm-
Up Drift
TIME FROM OUTPUT SHORT – Minutes
SHORT-CIRCUIT CURRENT – mA
–10
Figure 12.Short Circuit Current vs.
Time, Temperature
OP297
SUPPLY VOLTAGE – Volts
TOTAL SUPPLY CURRENT –
8000�20�5�10�15
900
Figure 13.Total Supply Current vs.
Supply Voltage
Figure 16.Voltage Noise Density and
Current Noise Density vs. Frequency

Figure 19.Differential Input Voltage
vs. Output Voltage
FREQUENCY – Hz
COMMON-MODE REJECTION – dB
1601101001k10k100k1M
100
Figure 14.Common-Mode Rejection
Frequency
Figure 17.Total Noise Density vs.
Source Resistance
Figure 20.Output Swing vs. Load
Resistance

FREQUENCY – Hz
POWER SUPPLY REJECTION – dB
1600.111M101001k10k100k
100
Figure 15.Power Supply Rejection
vs. Frequency
Figure 18.Open-Loop Gain vs. Load
Resistance

Figure 21.Maximum Output Swing
vs. Frequency

Partno	Mfg	Dc	Qty	Available	Descript
OP297	AD	N/a	161	avai	Dual Low Bias Current Precision Operational Amplifier
OP297	PMI	N/a	20	avai	Dual Low Bias Current Precision Operational Amplifier