OPA2375IDSGR - 10MHz Dual CMOS Op Amp RRO | Texas Instruments
부품 번호: OPA2375IDSGR ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $0.89 | $0.89 |
| 10 | $0.8 | $8.00 |
| 100 | $0.63 | $63.00 |
| 500 | $0.56 | $280.00 |
| 1,000 | $0.5 | $500.00 |
OPA2375IDSGR 개요
An operational amplifier (op amp) is a high-gain differential voltage amplifier that forms the core building block of analog signal conditioning. Within the power-management and signal-chain hierarchy, op amps sit in the amplifier IC category alongside instrumentation amplifiers and buffer amplifiers, conditioning sensor outputs, filtering signals, and driving ADC inputs. The OPA2375 belongs to the OPAx375 family, which includes the single OPA375, dual OPA2375, and quad OPA4375.
Key differentiating features include an extremely low broadband noise figure of 3.5 nV/sqrtHz, a maximum input offset voltage of only 500 uV, very low distortion (THD+N of 0.00015%), a 10 MHz gain bandwidth, and unity-gain stability. These combine to deliver precision performance rarely found in general-purpose CMOS op amps at this quiescent current level.
Technically, the OPA2375 uses a CMOS input architecture that achieves near-zero input bias current together with low 1/f noise, while the rail-to-rail output stage maximizes dynamic range on low single-supply rails such as 3.3 V and 5 V. The output swing within millivolts of either rail allows the full ADC input range to be exploited in compact battery-powered designs.
Typical applications include sensor signal conditioning for battery-powered devices, active filter and transimpedance stages in portable medical instruments, and driving precision successive-approximation ADCs such as the ADS131M08 in industrial data-acquisition systems.
Design consideration: the 2x2 mm WSON (DSG) package has a small thermal pad and fine 0.5 mm pitch, so inspect the PCB land pattern carefully and use a ground plane for heat spreading and stable high-frequency performance. Input and output RC filtering is recommended when driving heavily capacitive loads.
This page synthesizes distributor availability, drop-in alternative analysis, pinout details, and practical design notes not consolidated in the manufacturer datasheet, with pricing as of 2026-09-03.
드롭인 대체품: OPA2375IDSGR — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: OPA2375IDSGR (동일 폼 팩터 및 풋프린트) — 차이점: Package.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
OPA2375IDDFR
✅ 드롭인✓ 재고 있음
$0.82 / 개
데이터시트 보기 →OPA2376AIDSGR
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
OPA2375IDSGR 최대 정격 & 전기적 특성
| Number of Channels | 2 |
| Gain Bandwidth Product | 10 MHz |
| Broadband Input Noise | 3.5 nV/sqrtHz |
| Noise (TI product page) | 4.6 nV/sqrtHz |
| Input Offset Voltage | 500 uV (maximum) |
| THD+N | 0.00015% |
| Quiescent Current per Amplifier | 990 uA |
| 출력 유형 | Rail-to-Rail Output (RRO) |
| Unity-Gain Stable | Yes |
| Technology | CMOS |
| 패키지 | 8-WSON (DSG), 2x2 mm |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant |
OPA2375IDSGR 핀 구성
| 핀 1 | OUT A — Output of amplifier A |
| 핀 2 | -IN A — Inverting input of amplifier A |
| 핀 3 | +IN A — Non-inverting input of amplifier A |
| 핀 4 | V- — Negative supply (or ground on single supply) |
| 핀 5 | +IN B — Non-inverting input of amplifier B |
| 핀 6 | -IN B — Inverting input of amplifier B |
| 핀 7 | OUT B — Output of amplifier B |
| 핀 8 | V+ — Positive supply |
일반적인 애플리케이션
OPA2375IDSGR 적합 용도: 6 애플리케이션s: Sensor Signal Conditioning, Portable Medical Instrumentation, Industrial Data Acquisition, Active Filter Design, Battery-Powered Portable Devices, ADC Input Buffering.
Sensor Signal Conditioning
The OPA2375IDSGR fits precision sensor front-ends because its 3.5 nV/sqrtHz broadband noise and 500 uV maximum offset preserve small sensor signals that general-purpose CMOS amplifiers would corrupt. Its rail-to-rail output exploits the full 3.3 V or 5 V ADC range when amplifying bridge, thermistor, or pressure sensor outputs, while the dual channel allows one amplifier for gain and a second for filtering. Drawing only 990 uA per channel, it suits always-on battery nodes. Place the amplifier close to the sensor with a low-pass RC on the output to limit noise bandwidth before digitization.
추천
Portable Medical Instrumentation
Portable diagnostic and monitoring devices benefit from the OPA2375IDSGR's combination of benchtop-class analog performance and 2 mA total quiescent drain. The 0.00015% THD+N supports clean amplification of biopotential and optical-sensor signals, while the 10 MHz gain bandwidth provides headroom for 20-40 kHz filtering without gain peaking. The rail-to-rail output drives 12-bit or higher ADCs on a 3.3 V single supply, simplifying battery-powered power trees. Use guarded PCB routing around the high-impedance inputs and bias the amplifier mid-supply for AC-coupled biopotential channels.
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Industrial Data Acquisition
In industrial DAQ modules, the OPA2375IDSGR buffers and scales 4-20 mA receiver, thermocouple, and RTD signals ahead of precision converters. The 500 uV maximum offset limits DC error at low gains, and the rail-to-rail output prevents signal clipping near the rails after offset and gain tolerances accumulate. Its 10 MHz bandwidth settles quickly in multiplexed input channels, an advantage over slower 1 MHz micropower op amps. Anti-aliasing filters built with the second channel complete the signal chain before feeding the ADS131M08 delta-sigma ADC family.
추천
Active Filter Design
The OPA2375IDSGR is a strong choice for Sallen-Key and multiple-feedback active filters at audio and instrumentation frequencies. The 10 MHz gain bandwidth means a 100 kHz, gain-of-10 filter stage still retains ample loop gain, keeping the actual corner frequency close to the calculated value - a common failure mode with 1 MHz op amps. The dual channel lets one package implement a two-pole low-pass section, saving board space. Keep resistor values in the 1-10 kilo-ohm range so op-amp input noise dominates over resistor Johnson noise, and verify unity-gain stability in follower stages.
추천
Battery-Powered Portable Devices
Handheld meters, wearables, and IoT gateways use the OPA2375IDSGR where every microwatt counts. At 990 uA per channel (about 6.6 mW at 3.3 V for both channels), it delivers 10 MHz of bandwidth and 3.5 nV/sqrtHz noise - performance class usually reserved for amplifiers drawing several times more current. The 2x2 mm WSON (DSG) package occupies minimal PCB area, and the rail-to-rail output maintains signal swing as the battery discharges. For power cycling, the CMOS inputs tolerate power-down conditions well; still, add a series resistor if inputs can be back-driven by charged capacitors.
추천
ADC Input Buffering
Successive-approximation and delta-sigma ADCs need a driver that settles quickly and holds low noise; the OPA2375IDSGR addresses both with 10 MHz bandwidth and 3.5 nV/sqrtHz noise. Its rail-to-rail output reaches the ADC full-scale range without headroom loss, maximizing effective resolution on 3.3 V references. When driving switched-capacitor SAR inputs, add an RC charge-kickback filter (for example 100 ohms into 1 nF) between amplifier and ADC input, sized so the amplifier stays stable with the capacitive load presented during acquisition.
추천
추천 제품 요약
엔지니어링 참조 데이터: OPA2375IDSGR — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | OPA2375IDDFR | OPA2376AIDSGR |
|---|---|---|---|
| Package | 8-WSON (DSG) 2x2 mm | 8-WSON (DDF) 2x2 mm | 8-WSON (DSG) 2x2 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Gain Bandwidth Product | 10 MHz | 10 MHz | 5.5 MHz |
| Broadband Noise | 3.5 nV/sqrtHz | 3.5 nV/sqrtHz | 7.5 nV/sqrtHz |
| Channels | 2 | 2 | 2 |
| Quiescent Current per Channel | 990 uA | 990 uA | 760 uA |
| Output Type | Rail-to-Rail Output | Rail-to-Rail Output | Rail-to-Rail Output |
주요 차별점
- Class-leading noise at micropower current (vs OPA2376AIDSGR)
- Higher bandwidth headroom for active filters (vs OPA2376AIDSGR)
- Identical electrical specs across package variants (vs OPA2375IDDFR)
설계 노트
The 8-WSON (DSG) package is only 2x2 mm with fine pitch leads and a small exposed die-attach pad on the underside. Follow the TI datasheet land pattern exactly and connect the thermal pad to a solid ground plane with several vias - this improves heat spreading, provides a low-impedance ground return, and stabilizes high-frequency performance. Reflow profile compliance with the datasheet soldering recommendation is important on such a small package; inspect for solder bridging on 0.5 mm pitch pads.
Decouple V+ (pin 8) with a 100 nF ceramic capacitor placed within 2 mm of the pin, plus a 1-2.2 uF bulk capacitor nearby. With a 10 MHz gain bandwidth, supply ringing can couple into the RRO output stage, so keep the ground return of the decoupling capacitor direct to the plane. When driving capacitive loads, add a series isolation resistor (approximately 20-50 ohm) to preserve unity-gain stability, trading a small gain error for guaranteed phase margin.
Do not confuse OPA2375IDSGR (WSON DSG) with OPA2375IDGKR (VSSOP DGK) - they are electrically identical but footprint-incompatible, a frequent BOM substitution error. Also note the datasheet headline noise figure (3.5 nV/sqrtHz broadband) differs from the TI product-page figure (4.6 nV/sqrtHz), which reflects a different measurement condition; use the datasheet electrical characteristics table for design margin. Finally, verify the minimum supply voltage and temperature range in the datasheet before finalizing a design since those values are not repeated in distributor summaries.
규정 준수 정보
RoHS compliance per TI standard product policy and DigiKey listing. For formal REACH/RoHS certificates, download TI's certificate of conformance from ti.com/product/OPA2375.
