OPA2375IDSGR - 10MHz Dual CMOS Op Amp RRO | Texas Instruments
N.º da peça: OPA2375IDSGR ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 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 Visão geral
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.
Alternativas drop-in para OPA2375IDSGR — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com OPA2375IDSGR (mesmo formato e footprint) — diferindo em Package.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
OPA2375IDDFR
✅ Drop-In✓ Em estoque
$0.82 / unidade
Ver ficha técnica →OPA2376AIDSGR
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
OPA2375IDSGR Classificações máximas e características elétricas
| 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 |
| Tipo de saída | Rail-to-Rail Output (RRO) |
| Unity-Gain Stable | Yes |
| Technology | CMOS |
| Encapsulamento | 8-WSON (DSG), 2x2 mm |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
Configuração de pinos do OPA2375IDSGR
| 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- — Negative supply (or ground on single supply) |
| 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
OPA2375IDSGR é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para OPA2375IDSGR — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- Class-leading noise at micropower current (vs OPA2376AIDSGR)
- Higher bandwidth headroom for active filters (vs OPA2376AIDSGR)
- Identical electrical specs across package variants (vs OPA2375IDDFR)
Notas de projeto
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.
Informações de conformidade
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.
