OP2177ARZ-REEL7 - Dual Precision Low Noise Op Amp 1.3MHz | ADI
料号： OP2177ARZ-REEL7 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.95 | $6.95 |
| 10 | $5.95 | $59.50 |
| 100 | $4.85 | $485.00 |
| 500 | $4.1 | $2,050.00 |
| 1,000 | $3.62 | $3,620.00 |
OP2177ARZ-REEL7 概述
An operational amplifier (op amp) is a high-gain, differential-input, single-ended-output voltage amplifier that serves as a fundamental building block in analog electronics. Op amps are categorized by parameter emphasis into general-purpose, precision, low-noise, high-speed, and low-power families. The OP2177 belongs to the precision low-noise family, which optimizes DC accuracy (Vos, Ib, drift) alongside low spectral noise density for high-resolution measurement systems where both linearity and signal-to-noise ratio matter.
Key features include an input offset voltage drift of 0.1 uV/degree C, a typical input bias current of 0.5 nA, and 500 uA quiescent current per amplifier. The bipolar input stage uses laser-trimmed thin-film resistors to achieve sub-100 uV offset without external nulling. Outputs are stable with capacitive loads exceeding 100 pF, which simplifies buffer and cable-driving designs by eliminating the need for isolation resistors.
The OP2177 architecture pairs a precision bipolar input pair with a class AB output stage, delivering 10 mA minimum output current while keeping supply current below 1 mA per channel. The result is an amplifier suitable for low-power instrumentation that must still drive moderate loads such as ADC reference ladders, audio line outputs, and active-filter capacitors.
Typical applications include precision data-acquisition front ends, thermocouple and RTD signal conditioning, precision active filters, and four-wire sensor current sensing. The 8-pin SOIC pinout is industry-standard, simplifying PCB retrofits into legacy OP-213 / OP-2177 sockets.
When designing with this device, place 0.1 uF decoupling capacitors within 5 mm of pins 4 and 8, and keep input traces short. For best noise performance, choose low-impedance feedback networks (under 10 kohm) and avoid high-impedance nodes exposed to EMI.
This page integrates distributor pricing, drop-in alternatives, and practical design notes beyond the manufacturer's datasheet to accelerate component selection and BOM optimization.
直接替换替代料： OP2177ARZ-REEL7 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： OP2177ARZ-REEL7 （相同外形与封装尺寸） ——差异在于 Amplifier Type, Package, Slew Rate, Input Bias Current, Supply Voltage Range.
快速对比工具——选择替代料号进行并排对比：
OP2177ARZ
✅ 直接替换✓ 有现货
$0.86 / 个
查看数据手册 →OP4177ARZ
✅ 直接替换📋 参考替代料（不在目录中）
OP1177ARZ
✅ 直接替换📋 参考替代料（不在目录中）
AD8628ARZ
✅ 直接替换✓ 有现货
$1.49 / 个
查看数据手册 →ADA4522-2ARZ
✅ 直接替换✓ 有现货
$3.9 / 个
查看数据手册 →OP2177ARZ-REEL7 最大额定值与电气特性
| Manufacturer | Analog Devices Inc. |
| Series | OPx177 |
| Amplifier Type | Precision, Low Noise |
| Number of Circuits | 2 |
| Slew Rate | 0.7 V/us |
| Gain Bandwidth Product | 1.3 MHz |
| Input Offset Voltage (typ) | 15 uV |
| Input Offset Voltage Drift | 0.1 uV/degree C |
| Input Bias Current (typ) | 0.5 nA |
| Voltage Noise Density | 7.9 nV/rt(Hz) at 1 kHz |
| Supply Current per Amplifier | 500 uA (typ) |
| Supply Voltage Range | +/-2.5 V to +/-15 V (dual) |
| Output Drive | 10 mA minimum |
| Capacitive Load Drive | >100 pF stable |
| 工作温度范围 | -40 degree C to +125 degree C |
| 封装 | 8-pin SOIC (R-8) on 7-inch reel |
| 安装类型 | Surface Mount |
| RoHS | Compliant |
OP2177ARZ-REEL7 引脚配置
| 引脚 1 | OUT A — Output of channel A amplifier |
| 引脚 2 | -IN A — Inverting input of channel A |
| 引脚 3 | +IN A — Non-inverting input of channel A |
| 引脚 4 | V- — Negative supply pin |
| 引脚 5 | +IN B — Non-inverting input of channel B |
| 引脚 6 | -IN B — Inverting input of channel B |
| 引脚 7 | OUT B — Output of channel B amplifier |
| 引脚 8 | V+ — Positive supply pin |
典型应用
OP2177ARZ-REEL7 适用于 7 应用s: Precision Sensor Signal Conditioning, Industrial Data Acquisition Front End, Medical Monitoring Equipment, Precision Active Filters (Sallen-Key, Multiple-Feedback), Four-Wire Precision Current Sensing, Audio Line Drivers and Headphone Buffers, Reference Buffering and Test Instrumentation.
Precision Sensor Signal Conditioning
Interface for thermocouples, RTDs, strain gauges, and bridge sensors at sub-microvolt noise floor with high DC accuracy for factory automation and laboratory instrumentation.
推荐
Industrial Data Acquisition Front End
Multi-channel 16-24 bit SAR or sigma-delta ADC driver and active filter for process control, factory automation SCADA modules, and bench-top data loggers.
推荐
Medical Monitoring Equipment
ECG, EEG, EMG, pulse-oximeter, and patient-monitoring front-end with low 7.9 nV/rt(Hz) noise for high signal-to-noise ratio in battery-powered portable devices.
推荐
Precision Active Filters (Sallen-Key, Multiple-Feedback)
Low-noise Sallen-Key or Multiple-Feedback low-pass, high-pass, and band-pass filters up to ~200kHz with sub-microvolt noise floor for instrumentation-grade signal chains.
推荐
Four-Wire Precision Current Sensing
High-side or low-side current shunt measurement with OP2177 differential amplifier up to 100x gain; suits motor drives, battery management, and precision bench supplies.
推荐
Audio Line Drivers and Headphone Buffers
Low-distortion low-noise audio line-driver or impedance converter for professional audio, headphone amplifiers, and high-fidelity DAC outputs where 7.9 nV/rt(Hz) spectral noise floor preserves dynamic range.
推荐
Reference Buffering and Test Instrumentation
Unity-gain buffer for ADR01/ADR02/ADR05 series 10V references or precision DAC output buffers in bench-top calibrators, DMMs, and lab-grade voltmeters.
推荐
推荐产品汇总
工程参考数据： OP2177ARZ-REEL7 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | OP2177ARZ | OP4177ARZ | AD8628ARZ | ADA4522-2ARZ | OPA2277UA |
|---|---|---|---|---|---|---|
| Package | 8-SOIC (R-8) | 8-SOIC (tube) | 14-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Number of Channels | 2 | 2 | 4 | 2 | 2 | 2 |
| Gain Bandwidth Product | 1.3 MHz | 1.3 MHz | 1.3 MHz | 2.5 MHz | 5.5 MHz | 1.0 MHz |
| Slew Rate | 0.7 V/us | 0.7 V/us | 0.7 V/us | 1.0 V/us | 3.0 V/us | 0.9 V/us |
| Input Offset Voltage (typ) | 15 uV | 15 uV | 15 uV | 5 uV | 5 uV | 20 uV |
| Voltage Noise Density (1 kHz) | 7.9 nV/rt(Hz) | 7.9 nV/rt(Hz) | 7.9 nV/rt(Hz) | 18 nV/rt(Hz) | 4.5 nV/rt(Hz) | 8.0 nV/rt(Hz) |
| Supply Current per Amplifier | 500 uA | 500 uA | 500 uA | 0.06 uA | 0.8 mA | 0.8 mA |
| Capacitive Load Drive | 100 pF stable | 100 pF stable | 100 pF stable | 20 nF drive | 200 pF stable | 1 nF drive |
| Approximate Unit Price (qty 1) | USD 6.95 | USD 6.50 | USD 8.95 | USD 5.20 | USD 4.65 | USD 4.95 |
关键差异点
- Lower voltage noise density with mature laser-trim bipolar precision （对比 AD8628ARZ)
- Higher gain-bandwidth at same noise floor （对比 OPA2277UA)
- Single-supply alternative with chopper stability at same SOIC footprint （对比 ADA4522-2ARZ)
设计说明
Place 0.1 uF X5R/X7R ceramic decoupling capacitors within 5 mm of pins 4 (V-) and 8 (V+). Use a bulk 10 uF tantalum or aluminum-polymer capacitor at the supply input. Single-point star ground topology from the analog ground plane prevents digital switching currents from injecting into the OP2177 supply rail. Avoid sharing series resistance between V+ and V- decoupling paths.
Do not connect input pins directly to high-impedance nodes longer than 5 mm without ESD protection; the OP2177 inputs are bipolar with low 0.5 nA bias current but the same low bias makes them susceptible to PCB leakage. Add 100 kohm input resistors for protection against transients. Avoid exceeding +/-15 V on V+ or V-; voltage transients above absolute-maximum 18 V damage the part.
Route sensitive input traces over a continuous ground plane and keep them 5 mm minimum from supply and output traces to minimize crosstalk. Use guard rings around the inverting input for high-impedance nodes (above 100 kohm source impedance) to absorb leakage current from the PCB surface. Keep feedback network resistors close (<3 mm) to the inverting input to minimize stray capacitance.
Estimated: with 1 kohm feedback resistors and 1.3 MHz GBP, closed-loop gain of 10 yields a gain of 100 GBW available for error correction. Output noise integrated from 0.1 Hz to 10 Hz is approximately 0.5 uVpp, dominated by 7.9 nV/rt(Hz) spectral density. Keep total closed-loop gain below 1000 to avoid on-chip saturation at rail.
The 8-SOIC (R-8) package dissipates up to 600 mW with junction-to-ambient 160 C/W. Under typical operating conditions (<10 mA load, dual 15V supply), total power dissipation is 15 V * 1 mA per amp = 15 mW per channel; thermal rises are negligible. No heatsink required even at 125 degree C ambient. Maintain good PCB copper pour beneath the IC body and on power-supply pins for any elevated ambient.
合规信息
RoHS and REACH compliant per Analog Devices ordering information. Lead-free (matte tin finish); halogen-free per Analog Devices environmental policy. Not AEC-Q100 qualified (industrial-grade precision op amp).
