OP177FM/TR - 25µV Precision Op Amp | Analog Devices
N.º de pieza: OP177FM/TR ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $0.3534 | $0,35 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
OP177FM/TR Descripción general
An operational amplifier is an analog integrated circuit that amplifies the voltage difference between its differential inputs. It is widely used in sensor interfaces, active filters, voltage references, current measurements, and control loops. The OP177 belongs to the precision operational-amplifier category, where input offset voltage, drift, bias current, noise, and common-mode performance determine the accuracy of the complete measurement chain.
The OP177 datasheet identifies offset voltage as low as 25 µV maximum at room temperature and offset voltage drift as low as 0.3 µV/°C maximum. Its open-loop gain is 12 V/µV and is maintained over the full ±10 V output range. Minimum common-mode rejection is 130 dB, while minimum power-supply rejection is 120 dB. Maximum supply current is 2 mA. These characteristics support high-accuracy closed-loop operation and reduce errors caused by input imbalance, common-mode voltage, and supply variation.
The OP177 architecture is intended for precision signal conditioning rather than high-speed waveform processing. Its low offset and low drift reduce calibration requirements and improve repeatability across temperature. The high common-mode rejection supports sensing around ground-level or otherwise varying common-mode signals, while the high power-supply rejection reduces sensitivity to supply ripple. Stable operation at low supply current also makes the device suitable for battery-powered and compact instrumentation, subject to the exact supply and load conditions specified in the datasheet.
Typical applications include strain-gauge and pressure-sensor amplifiers, low-level voltage measurement, precision current-to-voltage conversion, bridge amplifiers, laboratory instrumentation, and high-accuracy feedback networks. In these systems, the OP177 can reduce the contribution of input-referred offset and temperature drift, allowing the front end to preserve more of the sensor signal. The actual accuracy still depends on resistor tolerances, reference quality, noise bandwidth, layout, supply bypassing, and calibration method.
When placing the OP177 in a design, keep the input and feedback components close to the device and use low-leakage, low-thermal-gradient resistors when offset is critical. Check the required common-mode voltage and output swing against the selected supply rails before finalizing the schematic. Decoupling capacitors should follow the datasheet recommendations, and the PCB should minimize leakage paths around high-impedance input nodes. This product page combines the verified manufacturer specifications, distributor pricing references, package information, and design considerations needed for an engineering comparison.
Alternativas directas para OP177FM/TR — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con OP177FM/TR (mismo factor de forma y huella) — difiere en Package.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
OP177BRC/883
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OP177FM/TR Valores máximos y características eléctricas
| Product Type | Precision operational amplifier |
| Number of Channels | 1 channel |
| Input Offset Voltage | 25 µV maximum at room temperature |
| Input Offset Voltage Drift | 0.3 µV/°C maximum |
| Open-Loop Gain | 12 V/µV |
| Open-Loop Gain Output Range | ±10 V |
| Common-Mode Rejection Ratio | 130 dB minimum |
| Power-Supply Rejection Ratio | 120 dB minimum |
| Maximum Supply Current | 2 mA |
| Encapsulado | 8-pin surface-mount package |
| Tipo de montaje | Surface mount |
| Tolerances | Offset voltage and drift are specified for precision applications |
Configuración de pines de OP177FM/TR
| Pin 1 | [DATA_NEEDED: pin 1 name] — [DATA_NEEDED: pin 1 function] |
| Pin 2 | [DATA_NEEDED: pin 2 name] — [DATA_NEEDED: pin 2 function] |
| Pin 3 | [DATA_NEEDED: pin 3 name] — [DATA_NEEDED: pin 3 function] |
| Pin 4 | [DATA_NEEDED: pin 4 name] — [DATA_NEEDED: pin 4 function] |
| Pin 5 | [DATA_NEEDED: pin 5 name] — [DATA_NEEDED: pin 5 function] |
| Pin 6 | [DATA_NEEDED: pin 6 name] — [DATA_NEEDED: pin 6 function] |
| Pin 7 | [DATA_NEEDED: pin 7 name] — [DATA_NEEDED: pin 7 function] |
| Pin 8 | [DATA_NEEDED: pin 8 name] — [DATA_NEEDED: pin 8 function] |
Aplicaciones típicas
OP177FM/TR es adecuado para 6 aplicacións: Precision Sensor Signal Conditioning, Bridge Amplifier Front End, Laboratory Instrumentation, Low-Level Voltage Measurement, Battery-Powered Measurement, Precision Feedback and Control.
Precision Sensor Signal Conditioning
The OP177FM/TR fits low-level sensor interfaces where the output must preserve small differential signals in the presence of common-mode voltage and supply variation. Its 25 µV maximum input offset and 0.3 µV/°C maximum offset drift reduce input-referred DC error, while 130 dB minimum CMRR and 120 dB minimum PSRR help reject disturbances. Use it around strain, pressure, temperature, and resistance bridges where accuracy changes slowly with temperature matter more than wide bandwidth. The practical trade-off is that resistor tolerances, leakage, and PCB contamination can still dominate the final accuracy budget.
Recomendado
Bridge Amplifier Front End
OP177FM/TR is appropriate for a bridge-amplifier input stage when the sensor millivolt-level differential signal is small and temperature stability is important. The 12 V/µV open-loop gain supports accurate closed-loop operation, while the low offset and drift reduce errors that would otherwise appear as a changing baseline. The circuit still requires stable excitation, matched resistors, low-leakage PCB surfaces, and common-mode analysis. OP177FM/TR trades higher bandwidth for precision; use a faster amplifier when transient response or high-frequency extraction dominates the application.
Recomendado
Laboratory Instrumentation
The OP177FM/TR can serve as an input amplifier for laboratory measurement equipment where DC accuracy and repeatability are more valuable than maximum bandwidth. The 25 µV maximum offset and 0.3 µV/°C maximum drift help maintain calibration stability, while the 2 mA maximum supply current supports compact low-power signal paths. Designers should still budget for resistor noise, input bias current, leakage, and thermal effects. A practical instrumentation design should also verify supply range, input common-mode limits, output swing, and stability with the selected feedback network.
Recomendado
Low-Level Voltage Measurement
OP177FM/TR is useful when measuring a small voltage difference near zero or around a varying common-mode level. Its 130 dB minimum common-mode rejection reduces output response to shared input voltage, and its 120 dB minimum power-supply rejection helps isolate the measurement from supply variation. The device is therefore suitable for precision buffers, differential amplifiers, and active feedback networks. Because the verified data does not provide every input noise, bias-current, and supply-range value, final error calculations should use the complete Analog Devices datasheet.
Recomendado
Battery-Powered Measurement
The OP177FM/TR can be considered for battery-powered measurement circuits because its maximum supply current is specified as 2 mA. The low supply demand is useful when every milliamp affects battery capacity, while the low offset and high rejection ratios support accurate operation from a relatively compact signal chain. The design must still account for regulator noise, load transients, input bias current, and leakage across the full temperature range. Use low-leakage components and controlled board cleanliness when the amplifier operates near high source impedance.
Recomendado
Precision Feedback and Control
OP177FM/TR is appropriate for feedback loops that require low DC error and stable operation across temperature. Its open-loop gain of 12 V/µV is maintained over the ±10 V output range according to the Analog Devices datasheet, supporting accurate closed-loop behavior in suitable architectures. The amplifier is not the best choice for high-speed compensation or wide-bandwidth control because detailed bandwidth, slew-rate, and settling-time values were not supplied. Verify loop stability, output swing, and load conditions in simulation before using it as a general-purpose control amplifier.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para OP177FM/TR — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | OP177 | OPA177 |
|---|---|---|---|
| Package | 8-pin surface-mount package | 8-pin surface-mount package; confirm exact suffix | 8-pin surface-mount package; confirm exact suffix |
| Brand | Analog Devices | Analog Devices | Analog Devices |
| Product Type | Precision operational amplifier | Precision operational amplifier family | Related precision operational amplifier family |
Diferenciadores clave
- Low input offset voltage (frente a Generic precision op-amp option)
- Low offset voltage drift (frente a OPA177)
- High common-mode rejection (frente a Generic precision op-amp option)
- High power-supply rejection (frente a Generic precision op-amp option)
Notas de diseño
Keep the OP177FM/TR input and feedback network physically close to the device. High-impedance input nodes should have short traces, guarded construction where appropriate, and clean board surfaces to reduce leakage and contamination-related offset. Place bypass capacitors near the supply pins according to the manufacturer datasheet. Because the verified data does not include the complete pin-level layout recommendation, confirm the exact package pinout before fabrication.
Use stable feedback resistors and preserve the intended closed-loop gain when precision is the primary requirement. The OP177 datasheet specifies 12 V/µV open-loop gain, but resistor tolerance, input bias current, noise, and feedback-node capacitance can still affect the complete signal chain. Verify the selected values against the exact supply voltage, common-mode range, output swing, and stability requirements; the supplied data does not provide bandwidth or slew-rate values for OP177FM/TR.
Offset drift can turn board heating into measurement error even when the amplifier's room-temperature offset is excellent. Place precision input and gain-setting components away from heat sources, use consistent thermal paths, and evaluate the circuit across its intended temperature range. The verified OP177 data provides a maximum offset drift of 0.3 µV/°C, so temperature gradients and self-heating should be included in the system error budget rather than treated as automatically negligible.
Información de cumplimiento
The supplied manufacturer and distributor search results do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-mineral status for OP177FM/TR.
