OP2177ARMZ-REEL - Dual Precision Low Noise Op Amp | ADI | 8-MSOP
N.º da peça: OP2177ARMZ-REEL ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $4.75 | $4,75 |
| 10 | $4.28 | $42,80 |
| 100 | $3.82 | $382,00 |
| 500 | $3.45 | $1.725,00 |
| 1.000 | $3.05 | $3.050,00 |
OP2177ARMZ-REEL Visão geral
An operational amplifier (op amp) is a high-gain DC-coupled electronic voltage amplifier with differential inputs and a single-ended output. Within the analog IC hierarchy, the op amp sits below the instrumentation amplifier and above the simple amplifier stage; precision op amps add tight offset, drift, bias-current, and noise specifications that distinguish them from general-purpose variants such as the LM358 or µA741. The OP2177 belongs to the linear amplifier subcategory of integrated circuits and is widely specified in data acquisition front-ends, medical instrumentation, and precision transducer signal chains where microvolt-level signals must be amplified without adding meaningful error.
Key features that differentiate the OP2177 include: 60 µV max offset voltage for accurate DC gain stages, 0.7 µV/°C max offset drift preserving accuracy across -40 °C to +125 °C, 2 nA max input bias current reducing errors with high-impedance sources, 8 nV/√Hz voltage noise density supporting low-impedance transducer preamps, 120 dB minimum PSRR rejecting supply-borne noise in mixed-signal systems, and unity-gain stability up to 1000 pF loads enabling direct drive of long cables or filter capacitors. The 8-MSOP (RM-8) package with exposed pad supports compact PCB layouts while providing adequate thermal dissipation for the 500 µA per-amplifier bias budget.
Architecturally, the OP2177 uses a bipolar-JFET input stage combined with a precision laser-trimmed offset trim scheme that holds initial offset to 60 µV without the field calibration that competing CMOS chopper-stabilized op amps require. Its 500 Ω internal output resistors limit fault current in the event of output shorts and create a small R-C snubbing effect that explains the 1000 pF capacitive-load stability. The result is a true drop-in classic-precision dual op amp that does not require external compensation, FET-input bias currents, or autozero warm-up cycles.
Typical applications for the OP2177ARMZ-REEL include precision weigh scales and strain-gauge bridges, thermocouple and RTD front-end amplifiers, active filters and integrators, instrumentation amplifiers built from a quad-OP2177, buffer stages for 16-to-24-bit ADCs, photo-detector transimpedance preamps, audio summing and crossover networks, and portable instrumentation powered from battery rails.
When designing with the OP2177ARMZ-REEL, always use 0.1 µF ceramic decoupling close to the supply pins and place feedback resistors near the inverting input to limit parasitic capacitance that would otherwise degrade phase margin. Although the outputs tolerate over 1000 pF, keep load capacitance at the inverting node minimal to preserve the 1.3 MHz gain-bandwidth product and avoid oscillation in unity-gain buffers.
This page synthesizes Analog Devices datasheet specifications, distributor stock-and-price data, same-family cross references, and drop-in pin-compatible alternatives not found in a single product brief.
Alternativas drop-in para OP2177ARMZ-REEL — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
OP2177ARMZ
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
OP2177ARMZ-R7
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
OP2177CRMZ-R7
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
OP2177CRMZ-REEL
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
OP2177ARMZ-REEL Classificações máximas e características elétricas
| Product Type | Precision Operational Amplifier |
| Manufacturer | Analog Devices |
| Series / Family | OPx177 (OP1177 / OP2177 / OP4177) |
| Number of Channels | 2 (Dual) |
| Encapsulamento | 8-MSOP (RM-8) |
| Supply Voltage Range (Dual) | ±2.5 V to ±15 V |
| Supply Voltage Range (Single) | +5 V to +30 V |
| Input Offset Voltage (max) | 60 µV |
| Input Offset Voltage Drift (max) | 0.7 µV/°C |
| Input Bias Current (max) | 2 nA |
| Voltage Noise Density | 8 nV/√Hz (typical, 1 kHz) |
| Gain-Bandwidth Product | 1.3 MHz |
| Slew Rate | 0.7 V/µs |
| Common-Mode Rejection Ratio (min) | 120 dB |
| Power-Supply Rejection Ratio (min) | 120 dB |
| Quiescent Current per Amplifier | < 500 µA (at 30 V) |
| Capacitive Load Drive | Stable > 1000 pF without compensation |
| Internal Output Resistor | 500 Ω |
| Faixa de temperatura de operação | -40 °C to +125 °C |
| Tipo de montagem | Surface Mount |
| Reel / Packaging | Tape & Reel (REEL) |
| Status RoHS | Compliant |
Configuração de pinos do OP2177ARMZ-REEL
| Pino 1 | OUT A — Output of amplifier A |
| Pino 2 | IN- A — Inverting input of amplifier A |
| Pino 3 | IN+ A — Non-inverting input of amplifier A |
| Pino 4 | V- / GND — Negative supply or ground |
| Pino 5 | IN+ B — Non-inverting input of amplifier B |
| Pino 6 | IN- B — Inverting input of amplifier B |
| Pino 7 | OUT B — Output of amplifier B |
| Pino 8 | V+ — Positive supply |
Aplicações típicas
OP2177ARMZ-REEL é adequado para 6 aplicaçãos: Precision Weigh Scale / Strain-Gauge Bridge Amplifier, Thermocouple / RTD Front-End Amplifier, Buffer Driver for 16-to-24-Bit ADCs, Precision Active Filter / Integrator, Photodiode Transimpedance Preamplifier, Portable Instrumentation Amplifier Building Block.
Precision Weigh Scale / Strain-Gauge Bridge Amplifier
The OP2177ARMZ-REEL is well-suited as the input stage of a strain-gauge bridge amplifier where microvolt-level signals must be amplified without adding meaningful error. Its 60 µV max offset voltage and 0.7 µV/°C max offset drift preserve scale linearity across -40 °C to +125 °C ambient swings common on factory floors. The 2 nA max input bias current minimizes IR drop errors across high-impedance 350 Ω / 1 kΩ bridge legs, while 8 nV/√Hz voltage noise density keeps noise-floor contribution below the sensor's self-noise. Compared to an instrumentation amplifier front-end, the OP2177 dual layout lets one channel condition the bridge while the second channel supplies an active excitation-trim filter on a single 8-MSOP footprint.
Recomendado
Thermocouple / RTD Front-End Amplifier
The OP2177ARMZ-REEL provides an accurate thermocouple front-end for K, J, and T type thermocouples used in industrial process control. The bipolar-JFET input delivers 2 nA max input bias current, drastically reducing cold-junction compensation errors compared to traditional bipolar inputs. Combined with 0.7 µV/°C max drift, the device preserves accuracy across the -40 °C to +125 °C industrial temperature window; pair with a precision reference and matched 1% thin-film input resistors for sub-1 °C measurement accuracy. The 1.3 MHz gain-bandwidth product allows the second op amp channel to implement active 50/60 Hz line-frequency notch filtering for industrial environments.
Recomendado
Buffer Driver for 16-to-24-Bit ADCs
Use the OP2177ARMZ-REEL as an output buffer between sensor signal-conditioning stages and high-resolution ADCs such as the AD7768, AD7195, or ADS131A04. Its 1.3 MHz gain-bandwidth product, 0.7 V/µs slew rate, and unity-gain stability above 1000 pF enable direct drive of switched-capacitor ADC inputs without a separate isolation buffer. The 120 dB minimum PSRR rejects supply-borne ripple from switching regulators on the same PCB, preserving the ADC's effective resolution; the 8 nV/√Hz noise density stays roughly an order of magnitude below the ADC's thermal noise floor. The dual channel allows simultaneously buffering differential ADC inputs from a single 8-MSOP footprint.
Recomendado
Precision Active Filter / Integrator
The OP2177ARMZ-REEL is an excellent building block for Sallen-Key, multiple-feedback, and state-variable active filters below ~100 kHz where its 1.3 MHz gain-bandwidth product preserves closed-loop gain accuracy. Unity-gain stability up to 1000 pF allows the device to drive the filter capacitors directly without an output buffer, simplifying multi-pole designs in audio crossovers, anti-aliasing stages, and lock-in amplifier front-ends. The 8 nV/√Hz voltage noise density keeps filter self-noise below the source signal, while 60 µV offset keeps DC-accurate integrators stable across industrial temperature ranges.
Recomendado
Photodiode Transimpedance Preamplifier
The OP2177ARMZ-REEL operates as a transimpedance preamplifier for photodiodes used in optical communications, LiDAR receivers, and pulse oximeters. Its 2 nA max input bias current is negligible next to typical photodiode currents, while 8 nV/√Hz voltage noise density keeps the noise floor low even with multi-MΩ feedback resistors needed for sub-µA photocurrents. The bipolar-JFET input stage offers lower voltage noise than CMOS competitors at the same bandwidth, and capacitive-load stability above 1000 pF tolerates the long PCB traces typically found between photodiode and preamp. Use the second channel as an output buffer/driver for downstream ADC front-ends.
Recomendado
Portable Instrumentation Amplifier Building Block
The OP2177ARMZ-REEL can be wired as a classic 3-op-amp instrumentation amplifier by adding a third amplifier (for example OP2177ARMZ-REEL channel A and B plus OP1177 or OP4177 buffer) for ECG, EEG, and patient-monitoring front-ends. Its 120 dB minimum CMRR rejects 50/60 Hz mains pickup, while 60 µV offset and 0.7 µV/°C drift preserve ±0.1 % gain accuracy across patient temperature variations. The < 500 µA per-amplifier quiescent current extends battery life in wearable medical patches. Internal 500 Ω output resistors protect against faults such as defibrillator-pulse coupling typical in clinical ECG designs.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para OP2177ARMZ-REEL — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | OP2177ARMZ | OP2177ARMZ-R7 | OP2177CRMZ-R7 | OP2177CRMZ-REEL |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 8-MSOP (RM-8) | 8-MSOP (RM-8) | 8-MSOP (RM-8) | 8-MSOP (RM-8) | 8-MSOP (RM-8) |
| Number of Channels | 2 (Dual) | 2 (Dual) | 2 (Dual) | 2 (Dual) | 2 (Dual) |
| Voltage Noise Density | 8 nV/√Hz (typ) | 8 nV/√Hz (typ) | 8 nV/√Hz (typ) | 8 nV/√Hz (typ) | 8 nV/√Hz (typ) |
| Gain-Bandwidth Product | 1.3 MHz | 1.3 MHz | 1.3 MHz | 1.3 MHz | 1.3 MHz |
| Slew Rate | 0.7 V/µs | 0.7 V/µs | 0.7 V/µs | 0.7 V/µs | 0.7 V/µs |
| Supply Voltage Range | ±2.5 V to ±15 V / +5 V to +30 V | ±2.5 V to ±15 V / +5 V to +30 V | ±2.5 V to ±15 V / +5 V to +30 V | ±2.5 V to ±15 V / +5 V to +30 V | ±2.5 V to ±15 V / +5 V to +30 V |
| CMRR / PSRR (min) | 120 dB | 120 dB | 120 dB | 120 dB | 120 dB |
Principais diferenciais
- Precision-grade accuracy in dual op amp 8-MSOP (vs LM358 / MC1458 general-purpose duals)
- Capacitive-load stability above 1000 pF without compensation (vs OP07 legacy precision single op amp)
- Dual-channel density with bipolar-JFET precision (vs OP1177 single-channel version of the same family)
Notas de projeto
Place 0.1 µF ceramic decoupling capacitors within 5 mm of the +V (pin 8) and V-/GND (pin 4) supply pins, with a low-ESR 10 µF bulk capacitor sharing the same ground star. This dual-stage decoupling prevents the OP2177ARMZ-REEL from picking up high-frequency noise on the supply rails, which the 120 dB PSRR can otherwise reject. For ±15 V analog systems, run separate analog and digital grounds back to the supply to avoid ground-loop errors.
Keep the inverting-input node physically compact and guard it with a ground plane to minimize parasitic capacitance that would otherwise degrade the 1.3 MHz gain-bandwidth product in unity-gain buffers. Use a topside ground pour connected to the exposed pad of the 8-MSOP package; this serves as both a thermal dissipation path (the OP2177ARMZ-REEL's low quiescent current makes thermal concerns minor) and a low-inductance return for high-frequency feedback signals.
Estimated: feedback resistor values above 1 MΩ will load the 2 nA max input bias current and produce IR errors, especially at the inverting input where bias current flows through the feedback network. Keep feedback resistors below 100 kΩ for best DC accuracy, or include bias-current cancellation resistors whose value equals the parallel combination of the feedback and ground resistors. Exceeding 1000 pF capacitive load at the output is acceptable per datasheet, but loads above 5 nF can reduce phase margin in unity-gain buffers — keep light capacitive loads for stable operation.
Although the OP2177ARMZ-REEL rejects 120 dB of common-mode signals, layout asymmetry between the two input traces converts common-mode noise into differential error through unbalanced source impedance. Match source impedance at IN+ A (pin 3) and IN- A (pin 2) by routing both inputs symmetrically and placing the gain-setting resistors equidistant from the op amp package. For trimpot-based offset adjustment, place the trimpot at the inverting node rather than the non-inverting node, and use a 10 kΩ potentiometer to minimize adjustment-related drift.
Informações de conformidade
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified; for automotive-grade precision dual op amps consult the ADA4084-2 or related automotive-qualified families.
