OP2177ARZ-REEL - Dual Precision Low-Noise Op Amp | Analog Devices
부품 번호: OP2177ARZ-REEL ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $7.95 | $7.95 |
| 10 | $6.8 | $68.00 |
| 100 | $5.42 | $542.00 |
| 500 | $4.65 | $2,325.00 |
| 1,000 | $3.98 | $3,980.00 |
OP2177ARZ-REEL 개요
A precision operational amplifier is a specialized analog IC designed to amplify the difference between two input voltages with high accuracy, minimal added noise, and minimal input-referred offset. Within the hierarchy of integrated circuits, the op-amp sits between basic amplifiers and complex signal-conditioning ASICs, and the precision low-noise variant specifically targets instrumentation, sensor signal chains, and audio front-ends where the amplifier must add negligible error to the input signal.
Key features of the OP2177ARZ-REEL include maximum offset voltage of 60 µV typical, low input bias current in the nanoampere range, 8 nV/√Hz typical input voltage noise density, and stable operation with capacitive loads exceeding 1000 pF without external compensation. Outputs are stable with capacitive loads of over 1000 pF, simplifying PCB design in mixed-technology boards. The SOIC-8 (R-8) narrow-body package supports surface-mount reflow profiles and standard tape-and-reel packaging for high-volume assembly.
Architecturally, the OP2177 uses precision bipolar input stages with laser-trimmed offset adjustment, achieving 0.7 µV/°C typical offset drift. The amplifier operates from a single supply as low as 5 V up to ±15 V dual rails and includes internal ESD protection on the inputs. The 1.3 MHz unity-gain bandwidth and 0.5 V/µs typical slew rate suit audio bandwidth, instrumentation, and active-filter applications rather than high-speed signal chains.
Typical applications include precision instrumentation amplifiers, strain-gauge and thermocouple signal conditioning, active filters, audio preamplifiers, motor-control current-sense amplifiers, and reference buffers for high-resolution ADCs. The dual-channel integration saves board space versus two discrete single-channel op-amps while maintaining matched channel characteristics. For instrumentation, the low input bias current minimizes error across high-impedance sensor sources.
When designing with the OP2177ARZ-REEL, place the device close to the sensor to minimize noise pickup on high-impedance input traces, and add 0.1 µF decoupling capacitors close to the supply pins. For dual-supply operation, ensure common-mode input range includes ground for true zero-sensing applications.
This page synthesizes distributor pricing, drop-in SOIC-8 alternatives from Analog Devices and competitors, and practical design notes not found in the manufacturer datasheet alone.
드롭인 대체품: OP2177ARZ-REEL — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: OP2177ARZ-REEL (동일 폼 팩터 및 풋프린트) — 차이점: Amplifier Type, Operating Temperature Range, Gain Bandwidth Product, Number of Circuits, Capacitive Load Drive.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
OP2177ARZ
✅ 드롭인✓ 재고 있음
$0.86 / 개
데이터시트 보기 →OP2177ARZ-REEL7
✅ 드롭인✓ 재고 있음
$3.62 / 개
데이터시트 보기 →OPA2227UA
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AD8628ARZ
✅ 드롭인✓ 재고 있음
$1.49 / 개
데이터시트 보기 →OPA2228UA
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
OP2177ARZ-REEL 최대 정격 & 전기적 특성
| Manufacturer | Analog Devices Inc. |
| Part Family | OPx177 (single/dual/quad) |
| Number of Channels | 2 (Dual) |
| Amplifier Type | Precision Low Noise Low Input Bias Current |
| 실장 유형 | Surface Mount |
| 패키지 | 8-SOIC (R-8) narrow body |
| Supply Voltage Range (Single) | 5 V to 30 V |
| Gain Bandwidth Product | 1.3 MHz |
| Input Offset Voltage (typical) | 60 uV (typical, per family datasheet front-page listing; max value not retrieved) |
| Input Bias Current | Low (nA range, per datasheet title) |
| Input Voltage Noise Density | 8 nV/sqrt(Hz) typical |
| 출력 유형 | Rail-to-Rail Output |
| 동작 온도 범위 | -40C to +125C |
| Capacitive Load Drive | > 1000 pF stable (no external compensation) |
| RoHS 상태 | Compliant |
| Lead-Free | Yes |
| Packaging | Tape & Reel (REEL suffix) |
OP2177ARZ-REEL 핀 구성
| 핀 1 | OUT A — Output of op-amp channel A |
| 핀 2 | -IN A — Inverting input of op-amp channel A |
| 핀 3 | +IN A — Non-inverting input of op-amp channel A |
| 핀 4 | V- (GND) — Negative supply (or GND for single-supply) |
| 핀 5 | +IN B — Non-inverting input of op-amp channel B |
| 핀 6 | -IN B — Inverting input of op-amp channel B |
| 핀 7 | OUT B — Output of op-amp channel B |
| 핀 8 | V+ — Positive supply |
일반적인 애플리케이션
OP2177ARZ-REEL 적합 용도: 6 애플리케이션s: Precision Instrumentation Amplifier Front-End, Thermocouple and Strain-Gauge Signal Conditioning, Audio Preamplifier and Active Filter, Industrial Sensor and 4-20 mA Loop Buffer, Motor Control Current-Sense Amplifier, High-Resolution ADC Reference Buffer.
Precision Instrumentation Amplifier Front-End
The OP2177ARZ-REEL fits precision instrumentation front-ends because of its 60 µV typical offset voltage, low nanoampere-range input bias current, and dual matched channels in a single SOIC-8 package. In a three-op-amp instrumentation topology, one OP2177 serves as the input buffer pair and gain stage while the second channel implements the difference amplifier - matched channels on one die minimize trim and channel-to-channel error.
추천
Thermocouple and Strain-Gauge Signal Conditioning
The OP2177ARZ-REEL is well suited to low-level thermocouple and strain-gauge signal conditioning thanks to its low input bias current (nA range) and extremely low offset voltage drift, which minimize error across high-impedance sensor sources. Connected as a low-gain differential amplifier with bandpass filtering, it amplifies Type-J millivolt signals without saturating, while the dual channel permits a second stage for cold-junction compensation.
추천
Audio Preamplifier and Active Filter
The OP2177ARZ-REEL works in audio preamplifier and active filter circuits where the dual matched channels and 8 nV/√Hz noise floor provide low-noise amplification with channel-to-channel phase matching for stereo sources. Its stable operation with capacitive loads > 1000 pF lets designers include long cable shields or speaker-coupling capacitor loads without oscillation. The result is clean signal conditioning with full rail-to-rail output swing and supply flexibility from 5 V to 30 V single-rail.
추천
Industrial Sensor and 4-20 mA Loop Buffer
The OP2177ARZ-REEL handles 4-20 mA current-loop buffer and industrial sensor conditioning because its 5 V to 30 V single-supply range interfaces directly to 24 V industrial rails without additional regulation, while the low input bias current reduces error when reading high-impedance sensor bridges. The integrated dual channels share one package with matched specifications, enabling simultaneous sense-and-reference amplification or redundant sensor channels for safety applications.
추천
Motor Control Current-Sense Amplifier
The OP2177ARZ-REEL fits motor-control current-sense applications because its low offset and dual channels can handle phase-A and phase-B shunt readings simultaneously, with matched gain error that simplifies software calibration. Its 1.3 MHz GBP is well within the bandwidth needed for motor PWM frequencies up to 100 kHz, while the rail-to-rail output maximizes dynamic range across the shunt's small-signal sense voltage.
추천
High-Resolution ADC Reference Buffer
The OP2177ARZ-REEL serves as a reference buffer for 16-bit to 20-bit ADCs in precision data-acquisition systems because its rail-to-rail output and high capacitive-load drive (> 1000 pF) directly drive the reference pin without output buffers between stages. One channel buffers the ADC reference while the second channel scales the input common-mode voltage to a level compatible with the ADC input range, all within a single SOIC-8 footprint.
추천
추천 제품 요약
엔지니어링 참조 데이터: OP2177ARZ-REEL — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
Choose OP2177ARZ (without REEL) when prototypes or low-volume builds use tube packaging. Choose OPA2227UA when lower noise (3 nV/√Hz) is the dominant specification; OPA2227 is pin-compatible and a true drop-in in SOIC-8. Choose AD8628ARZ for zero-drift operation where sub-microvolt offset drift matters more than dual-channel density. Choose OPA2228UA when bandwidth (33 MHz GBP) is needed rather than low-frequency precision; SOIC-8 pin-compatible but higher input bias current.
대체품과의 비교
| 파라미터 | 이 제품 | OP2177ARZ | OPA2227UA | AD8628ARZ | OPA2228UA |
|---|---|---|---|---|---|
| Package | SOIC-8 (R-8) | SOIC-8 (R-8) | SOIC-8 | SOIC-8 | SOIC-8 |
| Brand | Analog Devices | Analog Devices | Texas Instruments | Analog Devices | Texas Instruments |
| Channels | 2 (Dual) | 2 (Dual) | 2 (Dual) | 1 (Single) | 2 (Dual) |
| Gain Bandwidth Product | 1.3 MHz | 1.3 MHz | 10 MHz | 2.5 MHz | 33 MHz |
| Input Voltage Noise Density | 8 nV/sqrt(Hz) | 8 nV/sqrt(Hz) | 3 nV/sqrt(Hz) | 22 nV/sqrt(Hz) | 10 nV/sqrt(Hz) |
| Architecture | Precision bipolar | Precision bipolar | Precision bipolar FET | Auto-zero zero-drift | Wideband bipolar |
| Output Swing | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| Capacitive Load Drive | >1000 pF stable | >1000 pF stable | Specified (unloaded) | >500 pF | Specified (unloaded) |
주요 차별점
- Dual-channel density in a single SOIC-8 (vs AD8628ARZ)
- Excellent capacitive-load drive (vs OPA2227UA)
- Wide supply voltage flexibility (vs OPA2228UA)
설계 노트
Place a 0.1 µF ceramic decoupling capacitor within 5 mm of the V+ (pin 8) and V- (pin 4) supply pins to suppress supply-induced noise on the op-amp's output, per the Analog Devices OPx177 datasheet layout recommendations. For dual-supply operation, add a bulk 10 µF tantalum or aluminum electrolytic across the supplies to handle low-frequency transient demands from nearby digital or power stages.
Keep the high-impedance non-inverting inputs (+IN A pin 3, +IN B pin 5) trace lengths short and avoid routing them parallel to noisy digital or switching traces, since the OP2177ARZ-REEL's nA-range input bias current picks up board-leakage noise. Use a guard ring tied to a low-impedance reference at the inputs to absorb leakage currents on the SOIC-8 board's outer edges. The narrow-body SOIC-8 land pattern leaves room for a wide ground plane beneath the part for thermal dissipation.
Do not apply input voltages beyond the supply rails (V- to V+) on the +IN/-IN pins - the OP2177ARZ-REEL's input ESD protection diodes clamp over-range inputs and may inject current into the signal source. For dual-supply operation the OP2177 family datasheet emphasizes checking the input common-mode range includes ground (V-) for low-side current sensing. Decouple aggressively when driving long cables or capacitive loads above 1000 pF.
규정 준수 정보
RoHS compliant per Analog Devices product page. The OP2177ARZ-REEL is not AEC-Q100 qualified for automotive; for automotive-grade check OP2177ARZ-Q1 or use qualified automotive dual op-amps. Lead-free (Pb-free) confirmed.
