OP2177ARZ-REEL7 - Dual Precision Low Noise Op Amp 1.3MHz | ADI
MPN: OP2177ARZ-REEL7 ✓ פעילOP2177ARZ-REEL7 סקירה
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.
חלופות תחליף ישיר עבור OP2177ARZ-REEL7 — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם OP2177ARZ-REEL7 (אותו גורם צורה וטביעת רגל) — שונים ב Amplifier Type, Package, Slew Rate, Input Bias Current, Supply Voltage Range.
OP2177ARZ
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←OP4177ARZ
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
OP1177ARZ
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
AD8628ARZ
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ADA4522-2ARZ
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←OPA2277UA
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←AD8676ARZ
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←OP2177ARZ-REEL7 דירוגים מרביים ומאפיינים חשמליים
| 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 |
| טווח טמפרטורת פעולה | -40 degree C to +125 degree C |
| מארז | 8-pin SOIC (R-8) on 7-inch reel |
| סוג הרכבה | Surface Mount |
| RoHS | Compliant |
תצורת פינים של OP2177ARZ-REEL7
| פין 1 | OUT A — Output of channel A amplifier |
| פין 2 | -IN A — Inverting input of channel A |
| פין 3 | +IN A — Non-inverting input of channel A |
| פין 4 | V- — Negative supply pin |
| פין 5 | +IN B — Non-inverting input of channel B |
| פין 6 | -IN B — Inverting input of channel B |
| פין 7 | OUT B — Output of channel B amplifier |
| פין 8 | V+ — Positive supply pin |
יישומים טיפוסיים
OP2177ARZ-REEL7 מתאים עבור 7 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור OP2177ARZ-REEL7 — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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 |
מבדילים עיקריים
- Lower voltage noise density with mature laser-trim bipolar precision (לעומתAD8628ARZ)
- Higher gain-bandwidth at same noise floor (לעומתOPA2277UA)
- Single-supply alternative with chopper stability at same SOIC footprint (לעומתADA4522-2ARZ)
הערות תכנון
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.
מידע על תאימות
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).
