The OP297 is the first dual op amp to pack precision performance into the space-saving, industry standard 8-pin SO package. Its combination of precision with low power and extremely 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 50µV, and low drift, below 0.6µV/°C. Open-loop gain exceeds 2000V/mV insuring high linearity in every application. Errors due to common-mode signals are eliminated by the OP297's common-mode rejection of over 120 dB. The OP297's power supply rejection of over 120dB minimizes offset voltage changes experienced in battery powered systems. Supply current of the OP297 is under 625µA per amplifier and it can operate with supply voltages as low a ±2V.
The OP297 utilizes a super-beta input stage with bias current cancellation to maintain picoamp bias currents at all temperatures. This is in contrast to FET input op amps whose bias currents start in the picoamp range of 25°C, but double for every 10°C rise in temperature, to reach the nanoamp range above 85°C. Input bias current of the OP297 is under 100pA at 25°C and is under 450pA over the military temperature range.
Combining precision, low power and low bias current, the OP297 is ideal for a number of applications including instrumentation amplifiers, log amplifiers, phot-diode preamplifiers and long-term integrators. For a single device, see the OP97; for a quad, see the OP497.
Features and Benefits625 µA Max 120 dB Min AD708, OP221, LM158, and MC1458/ 1558 with Improved Performance | AmplifiersOP297 SPICE Macro-Model |
Document | note |
OP297: Dual Low Bias Current Precision Operational Amplifier Data Sheet (Rev. G) | PDF 317 kB |
Document | note |
AN-649: Using the Analog Devices Active Filter Design Tool (Rev. 0) | PDF 5.3 M |
Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
---|---|---|---|---|---|---|
OP297EZ Production | 8 ld CerDIP | OTH 48 | -40 to 85C | 9.6 | 9.12 | N |
OP297FPZ Production | 8 ld PDIP | OTH 50 | -40 to 85C | 4.19 | 4 | Y |
OP297FS Production | 8 ld SOIC | OTH 98 | -40 to 85C | 4.18 | 3.98 | N |
OP297FS-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 85C | 0 | 3.98 | N |
OP297FSZ Production | 8 ld SOIC | OTH 98 | -40 to 85C | 3.69 | 3.5 | Y |
OP297FSZ-REEL Production | 8 ld SOIC | REEL 2500 | -40 to 85C | 0 | 3.5 | Y |
OP297FSZ-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 85C | 0 | 3.5 | Y |
OP297GPZ Production | 8 ld PDIP | OTH 50 | -40 to 85C | 3.14 | 3.03 | Y |
OP297GS Production | 8 ld SOIC | OTH 98 | -40 to 85C | 3.2 | 2.96 | N |
OP297GS-REEL Production | 8 ld SOIC | REEL 2500 | -40 to 85C | 0 | 2.96 | N |
OP297GS-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 85C | 0 | 2.96 | N |
OP297GSZ Production | 8 ld SOIC | OTH 98 | -40 to 85C | 2.82 | 2.61 | Y |
OP297GSZ-REEL Production | 8 ld SOIC | REEL 2500 | -40 to 85C | 0 | 2.61 | Y |
OP297GSZ-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 85C | 0 | 2.61 | Y |
Part Number | Description | Price | RoHS |
---|---|---|---|
EVAL-PRAOPAMP-2CPZ | Dual CP-8 lead LFCSP Evaluation Board | 20.19 | Y |
EVAL-PRAOPAMP-2RMZ | Dual RM-8 lead MSOP Evaluation Board | 20.19 | Y |
EVAL-PRAOPAMP-2RZ | Dual R-8 lead SOIC Evaluation Board | 20.19 | Y |