OPA2107AP - Precision Dual Difet Op Amp 4.5MHz | TI
N.º de pieza: OPA2107AP ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $8.42 | $8,42 |
| 10 | $7.58 | $75,80 |
| 100 | $6.74 | $674,00 |
| 500 | $6.06 | $3.030,00 |
| 1.000 | $5.45 | $5.450,00 |
OPA2107AP Descripción general
An operational amplifier is a high-gain DC-coupled voltage amplifier that, with external feedback networks, forms the core building block of analog signal processing. Within the component hierarchy, the OPA2107AP sits in the precision JFET-input op amp family: operational amplifier -> amplifier IC -> analog integrated circuit. Dual (two-amplifier) packaging halves board area versus two singles, which is why duals dominate multi-channel analog front ends.
Key differentiating features per the TI datasheet include very low noise at 10 kHz, low input offset voltage of 1 mV maximum, low offset drift of 10 uV per degree C maximum, and low input bias current of 10 pA maximum. The device is unity-gain stable and offers fast settling to 0.01 percent, making it a direct performance upgrade path for legacy BIFET-type amplifiers such as the classic TL072/TL082 class.
Technically, the Difet process uses dielectrically isolated JFET input transistors on a precision bipolar process, combining FET-class input bias currents with bipolar-class output drive and noise performance. The dielectric isolation reduces junction capacitances, enabling the 4.5 MHz bandwidth and 18 V/us slew rate that distinguish this part from slower BIFET designs.
Typical applications include data acquisition front ends, DAC output amplifiers, optoelectronic transimpedance stages, and high-impedance sensor interfaces such as photodiode and pH probe amplifiers, where picoampere bias current preserves signal fidelity across megaohm source impedances.
Design consideration: as a non-RRIO dual-supply precision amplifier, the input common-mode range does not include either rail; provide at least 2 to 3 V of headroom and place 0.1 uF ceramic decoupling capacitors directly at pins 8 and 4.
This page synthesizes verified distributor data, drop-in alternatives, and practical design guidance not consolidated in the manufacturer datasheet.
Alternativas directas para OPA2107AP — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con OPA2107AP (mismo factor de forma y huella) — difiere en Amplifier Type, Number of Channels, Slew Rate, Supply Voltage Range.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
OPA2107BP
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
OPA2604AP
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
OPA2991P
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
NE5532P
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC33272APG
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
OPA2107AP Valores máximos y características eléctricas
| Amplifier Type | Precision Dual Difet Operational Amplifier |
| Number of Channels | 2 |
| Gain Bandwidth Product | 4.5 MHz |
| Slew Rate | 18 V/us |
| Supply Voltage Range | +/-10 V to +/-18 V (20 V to 36 V total) |
| Input Offset Voltage | 1 mV max |
| Offset Voltage Drift | 10 uV/C max |
| Input Bias Current | 10 pA max |
| Settling Time | Fast settling to 0.01% |
| Unity-Gain Stable | Yes |
| Output per Amplifier | Standard (General Purpose) |
| Encapsulado | 8-PDIP (DIP-8) |
| Tipo de montaje | Through Hole |
Configuración de pines de OPA2107AP
| Pin 1 | OUT A — Output of amplifier A |
| Pin 2 | -IN A — Inverting input of amplifier A |
| Pin 3 | +IN A — Non-inverting input of amplifier A |
| Pin 4 | V- — Negative supply (to -18 V) |
| Pin 5 | +IN B — Non-inverting input of amplifier B |
| Pin 6 | -IN B — Inverting input of amplifier B |
| Pin 7 | OUT B — Output of amplifier B |
| Pin 8 | V+ — Positive supply (to +18 V) |
Aplicaciones típicas
OPA2107AP es adecuado para 6 aplicacións: Data Acquisition Front Ends, DAC Output Amplifiers, Photodiode Transimpedance Amplifiers, High-Impedance Sensor Interfaces, Precision Audio Signal Chains, Test and Measurement Instrumentation.
Data Acquisition Front Ends
The OPA2107AP fits multichannel data acquisition front ends because each amplifier combines 10 pA maximum input bias current with 1 mV maximum offset and 10 uV/C drift, preserving DC accuracy when buffering signals from high-impedance sources such as bridge sensors or sample-hold networks. Its 4.5 MHz bandwidth supports closed-loop gains from 1 to 100 while comfortably driving the input stages of 12- to 16-bit successive-approximation converters on +/-15 V industrial rails. The dual package buffers two channels in one DIP-8 socket, halving board area versus single op amps. Performance consideration: with high closed-loop gain, the 1 mV offset is amplified directly, so a trim or the OPA2107BP grade may be needed where sub-millivolt referred-to-input accuracy is required.
Recomendado
DAC Output Amplifiers
As a DAC output amplifier, the OPA2107AP provides the fast settling highlighted in the TI datasheet - fast settling to 0.01% - which is essential for converting current- or voltage-output DACs into clean analog levels without long tail errors between code updates. The Difet input stage keeps bias-current-induced feedthrough negligible across typical 5 k to 20 k DAC output impedances, and the 4.5 MHz gain-bandwidth allows I/V converter implementations with sub-microsecond settling at moderate gains. Operating from +/-10 V to +/-18 V supplies gives generous output swing for +/-10 V industrial signal standards. Design trade-off: supply pins see transient charge injection at each DAC code transition, so place 0.1 uF ceramics within millimeters of pins 4 and 8 to keep glitch energy out of the analog output.
Recomendado
Photodiode Transimpedance Amplifiers
In optoelectronics, the OPA2107AP serves as a photodiode transimpedance amplifier where the 10 pA maximum input bias current is the decisive parameter: with photodiode currents often below 100 nA, bipolar-input alternatives would introduce error orders of magnitude larger than the signal itself. The 4.5 MHz bandwidth supports megahertz-class closed-loop TIA bandwidths with feedback resistors of hundreds of kiloohms, while fast 0.01% settling suits pulse and optical communication receivers. Layout dominates performance: guard the inverting input node, keep the summing junction area minimal, and select the feedback capacitor for a ~45 degree phase margin per standard TIA design practice. For higher-current drive after the TIA, a BUF634 buffer extends output capability without degrading the precision input stage.
Recomendado
High-Impedance Sensor Interfaces
The TI datasheet explicitly lists high-impedance sensors as an OPA2107AP application. Sources such as pH probes, piezoelectric accelerometers, and capacitive sensors present megohm-to-gigaohm impedances where even nanoampere input currents produce volts-scale error; the OPA2107AP's 10 pA maximum bias current keeps that error in the microvolt-to-millivolt range. Low 10 uV/C offset drift preserves calibration over industrial temperature excursions, and the dual channel allows a second amplifier for filtering or gain staging in the same package. Use a guard ring driven by the input's buffered potential to reduce PCB leakage below the amplifier's own bias current. Trade-off: source resistances above 10 megaohm convert bias and noise current into meaningful voltage noise, so bandwidth should be deliberately limited with feedback capacitance.
Recomendado
Precision Audio Signal Chains
The OPA2107AP is popular in precision analog audio stages - preamps, active crossovers, and balanced line receivers - because very low noise at 10 kHz (per the datasheet feature list) combined with Difet input purity yields transparent low-noise performance, and engineers commonly report it as an upgrade over BIFET-type amplifiers in existing designs. Its +/-10 V to +/-18 V supply range supports high-swing professional +4 dBu and higher headroom systems without clipping, and unity-gain stability permits buffer duties. Compared to the audio-specialized OPA2604AP, the OPA2107AP trades bandwidth (4.5 MHz vs 10 MHz) for tighter DC precision, which matters in DC-servo and direct-coupled architectures. Keep loop gain high in the audible band by limiting closed-loop gain per stage to 10x or less.
Recomendado
Test and Measurement Instrumentation
Bench instruments, signal-conditioning modules, and calibration equipment benefit from the OPA2107AP's combination of 1 mV maximum offset, 10 uV/C drift, and fast 0.01% settling, which together bound both static accuracy and dynamic response in measurement paths. The wide +/-10 V to +/-18 V supply window matches traditional +/-15 V analog instrumentation rails, and the 18 V/us slew rate preserves waveform fidelity for signals well into the hundreds of kilohertz. Through-hole DIP-8 packaging simplifies prototyping and field service in legacy instrument architectures. Practical consideration: for front ends measuring near either rail, the input common-mode range excludes the rails by several volts, so bias sensor inputs mid-supply or select the RRIO OPA2991 for near-rail operation.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para OPA2107AP — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | OPA2107BP | OPA2604AP | OPA2991P | NE5532P | MC33272APG |
|---|---|---|---|---|---|---|
| Package | 8-PDIP (DIP-8) | 8-PDIP (DIP-8) - same | 8-PDIP (DIP-8) - same | 8-PDIP (DIP-8) - same | 8-PDIP (DIP-8) - same | 8-PDIP (DIP-8) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | onsemi |
| Gain-Bandwidth Product | 4.5 MHz | 4.5 MHz | 10 MHz | 4.5 MHz | 10 MHz (typ) | 9 MHz (typ) |
| Slew Rate | 18 V/us | 18 V/us | 35 V/us (typ) | 21 V/us | 9 V/us (typ) | 10 V/us (typ) |
| Input Bias Current (max) | 10 pA | 10 pA class (Difet) | pA class (FET input) | CMOS, pA class | nA class (bipolar) | nA class (bipolar) |
| Rail-to-Rail I/O | No | No | No | Yes (RRIO) | No | No |
| Key Differentiator | Precision Difet, unity-gain stable, 0.01% fast settling | Tighter precision grade, identical footprint | Audio-optimized FET dual, 10 MHz | TI pin-to-pin upgrade, RRIO, 75 mA output | Low-cost industry-standard audio dual | Cross-brand bipolar dual, low cost |
Diferenciadores clave
- Difet FET input with 10 pA max bias current (frente a NE5532P)
- TI-designated upgrade path exists (frente a OPA2991P)
- Same-socket precision grade upgrade (frente a OPA2107BP)
Notas de diseño
Supply the OPA2107AP from +/-10 V to +/-18 V rails per the TI datasheet. Place 0.1 uF ceramic capacitors within a few millimeters of pin 8 (V+) and pin 4 (V-), supplemented by 10 uF bulk tantalum or electrolytic per board. The wide supply window tolerates unregulated +/-15 V industrial rails, but transients above the absolute maximum will destroy the Difet input stage - add series resistance or TVS if supply transients are possible.
For the 10 pA input bias current to be meaningful in high-impedance circuits, PCB leakage must be lower. Guard ring the inverting input traces (pins 2 and 6) with a conductor driven at the input's buffered potential, and keep the summing junction away from supply and output traces. Clean flux residue thoroughly - contaminated DIP-8 through-hole boards routinely leak nanoamperes, masking the FET input advantage entirely.
The input common-mode range excludes both rails by several volts - biasing inputs near ground on a single supply or near a rail will cause output phase reversal or clipping. Unlike modern RRIO parts such as OPA2991P, the OPA2107AP assumes mid-supply common-mode operation. Also verify capacitive-load stability in unity-gain buffer service; add a 20-50 ohm isolation resistor if driving cables or long traces directly.
Información de cumplimiento
Compliance data not present in the provided web data; legacy through-hole DIP precision parts may be exempt from some RoHS provisions. Verify on the TI product page.
