OPA2107BM - Dual Precision Difet Op Amp, 4.5MHz | TI
MPN: OPA2107BM β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $9.8 | $980.00 |
| 500 | $8.9 | $4,450.00 |
| 1,000 | $7.95 | $7,950.00 |
OPA2107BM Overview
An operational amplifier is a high-gain DC-coupled voltage amplifier that, with external feedback networks, forms the fundamental building block of analog signal chains; the op amp sits within the amplifier IC hierarchy of analog integrated circuits and power/analog signal conditioning devices. FET-input amplifiers like the OPA2107 provide extremely low input bias currents compared to bipolar-input predecessors, which is essential when amplifying signals from high-impedance sources.
Key features include precision Difet input technology delivering very low input bias current, low input offset voltage drift over temperature, a 4.5 MHz gain-bandwidth suitable for precision audio and instrumentation signals, and the hermetic TO-99 metal can, which offers superior thermal and environmental stability versus plastic packages - a major reason this package remains specified in avionics and military systems.
Architecturally, the OPA2107 uses a Difet (dielectrically isolated JFET) process, an advancement over the BIFET process that reduces input bias current and offset drift while preserving slew rate and bandwidth. TI positions it as a drop-in performance upgrade for legacy BIFET-type amplifiers in existing sockets.
Typical applications include precision instrumentation front ends, active filter stages in professional audio equipment, integrators and sample-hold circuits, and photodiode or high-impedance sensor preamplifiers where low bias current directly determines measurement accuracy.
A key design consideration is that the metal-can package does not dissipate heat as effectively as modern surface-mount packages, so total power dissipation should be checked at high supply voltages. Output drive should also be kept within datasheet limits for stability with capacitive loads.
This page synthesizes cross-reference data, drop-in alternative analysis, and practical design guidance not found in the manufacturer datasheet.
Drop-in alternatives for OPA2107BM β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with OPA2107BM (same form factor and footprint) β differing in Amplifier Type, Mounting Type, Package, RoHS Status, Supply Voltage Range.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
OPA2107AM
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
OPA2107SM
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
OPA2107BM Maximum Ratings & Electrical Characteristics
| Amplifier Type | Precision Dual Difet Operational Amplifier |
| Number of Channels | 2 |
| Gain Bandwidth Product | 4.5 MHz |
| Supply Voltage Range | Up to Β±18 V (36 V total) |
| Input Offset Voltage (Max) | 1000 uV |
| Package | TO-99 metal can, 8-pin (MBCY8) |
| Mounting Type | Through Hole |
| Temperature Grade | M (military/extended) per BM suffix |
| Process Technology | Difet (dielectrically isolated JFET) |
| Terminal Form | Wire (per package data) |
| Package Shape/Style | Round / Cylindrical |
| RoHS Status | unknown |
| Original Manufacturer Line | Burr-Brown (now Texas Instruments) |
OPA2107BM Pin Configuration
| Pin 1 | OUT A β Output of amplifier A |
| Pin 2 | -IN A β Inverting input of amplifier A |
| Pin 3 | +IN A β Non-inverting input of amplifier A |
| Pin 4 | V- β Negative supply (down to -18 V) |
| Pin 5 | +IN B β Non-inverting input of amplifier B |
| Pin 6 | -IN B β Inverting input of amplifier B |
| Pin 7 | OUT B β Output of amplifier B |
| Pin 8 | V+ β Positive supply (up to +18 V) |
Typical Applications
OPA2107BM is suitable for 6 applications: Precision Instrumentation Front Ends, Professional Audio Active Filters and Equalizers, Photodiode and High-Impedance Sensor Preamplifiers, Integrators and Sample-Hold Circuits, Military, Avionics, and High-Reliability Analog Systems, Precision Rectifiers and Peak Detectors.
Precision Instrumentation Front Ends
The OPA2107BM fits precision instrumentation front ends because its Difet JFET inputs combine a 1000 uV maximum offset with very low input bias current, so high-impedance sources such as strain gauges, thermocouples, and pH probes are not loaded down by input current errors. With 4.5 MHz of bandwidth, it provides enough open-loop gain across the measurement band to keep gain error and distortion low in the first amplification stage. In a typical three-op-amp instrumentation topology, the OPA2107BM dual package serves as both input buffers, saving board space versus two singles, while the TO-99 metal can shields the input nodes from stray electric fields and survives harsh environments hermetically. Designers should note the trade-off: the metal can dissipates heat less efficiently, so supply current and gain-setting resistor values should keep package power modest.
Recommended
Professional Audio Active Filters and Equalizers
The OPA2107BM is a strong choice for professional audio active filters, equalizers, and summing buses. Its 4.5 MHz gain-bandwidth leaves substantial loop gain at 20 kHz, which reduces distortion and keeps the corner frequencies of Sallen-Key and multiple-feedback filters accurate. The Difet JFET input stage contributes low bias current, allowing large-value, low-noise filter resistors and coupling capacitors without DC offsets drifting into the audio path. The hermetic TO-99 metal can adds electric-field shielding that reduces hum pickup in high-gain microphone and phono preamplifier stages, a tangible benefit in rack-mounted equipment near power transformers. Compared with general-purpose bipolar duals like the NE5532, the OPA2107BM trades some output drive for far lower input current and better DC precision. Audio engineers commonly cite this family as an upgrade path from BIFET-era duals.
Recommended
Photodiode and High-Impedance Sensor Preamplifiers
Photodiode receivers and charge-integrating sensor front ends demand op amps with femtosecond-class relevance: input bias current and input capacitance dominate noise and speed. The OPA2107BM addresses the bias-current requirement with its Difet JFET input, which draws orders of magnitude less current than bipolar alternatives, so photocurrent is not shunted into the amplifier and dark-level accuracy is preserved across temperature. The 4.5 MHz bandwidth supports megahertz-class optical signal paths with transimpedance gains in the 100 kOhm to 1 MOhm range. Because the two amplifiers are integrated, one die can serve the transimpedance stage and a following gain/filter stage with matched thermal behavior. The metal can package further isolates the summing node from ambient electric fields. Layout practice should still minimize guard-ring leakage and keep the feedback resistor leads short and shielded.
Recommended
Integrators and Sample-Hold Circuits
Integrator and sample-hold stages live or die by input bias current and dielectric-related droop. The OPA2107BM's Difet JFET inputs minimize the capacitor charging error that causes integrator output drift and sample-hold droop, while the 1000 uV maximum offset bounds the DC error budget of the held value. A 4.5 MHz bandwidth allows fast acquisition settling in sample-hold service, and the dual channel lets designers implement an integrator plus reset comparator buffer in one hermetic package. In precision analog computers, VCO control loops, and long-term integrators used in test instrumentation, the TO-99 metal can additionally shields the high-impedance summing node. Designers should select low-leakage capacitor dielectrics such as polypropylene or polystyrene and guard the summing node PCB area to realize the amplifier's full low-bias benefit.
Recommended
Military, Avionics, and High-Reliability Analog Systems
The BM suffix and TO-99 hermetic metal can are precisely what military and avionics programs specify: the hermetic glass-to-metal seal prevents moisture ingress that degrades JFET gate leakage over decades, and the M temperature grade guarantees operation beyond commercial limits. In flight-control analog computers, radar IF processing, and ground-based defense instrumentation, the OPA2107BM serves as general-purpose precision gain, filtering, and summation amplification where a 4.5 MHz bandwidth and Β±18V supply rails give wide dynamic range. The metal can also withstand the thermal cycling and mechanical stress of aerospace environments better than plastic packages. Procurement today relies on qualified excess stock, so verification of date codes and authentication screening is recommended. For cost-driven industrial redesigns, plastic-package OPA2107 or modern TI equivalents can replace it where hermetics are not mandated.
Recommended
Precision Rectifiers and Peak Detectors
Precision rectifiers and peak detectors need low input bias current so the holding capacitor does not discharge through the amplifier, plus enough bandwidth to track fast input edges without slew-induced droop. The OPA2107BM's JFET input keeps peak-hold droop low, its 4.5 MHz bandwidth supports fast acquisition, and the Β±18V supply range permits detection of large signal swings directly. Using the integrated second channel as a reset comparator buffer or DC-restoring loop keeps the design compact and thermally matched. The 1000 uV maximum offset sets the detection threshold floor, so for sub-millivolt peak detection a trim or a chopper stage may be added. The hermetic metal can benefits the high-impedance diode node by shielding it from stray fields, improving long-term holding accuracy in instrumentation and RF envelope-detection circuits.
Recommended
Recommended Products Summary
Engineering reference data for OPA2107BM β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | OPA2107AM | OPA2107SM | OPA2107KP |
|---|---|---|---|---|
| Package | TO-99 metal can, 8-pin | TO-99 metal can, 8-pin - same | TO-99 metal can, 8-pin - same | DIP-8 plastic |
| Brand | Texas Instruments (Burr-Brown) | Texas Instruments (Burr-Brown) | Texas Instruments (Burr-Brown) | Texas Instruments (Burr-Brown) |
| Channels | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) |
| Gain-Bandwidth | 4.5 MHz | 4.5 MHz | 4.5 MHz | 4.5 MHz |
| Supply Voltage | Up to Β±18 V | Up to Β±18 V | Up to Β±18 V | Up to Β±18 V |
| Temperature Grade | M (military) | A (extended) | S (space) | K (commercial/industrial) |
| Hermetic Packaging | Yes (TO-99) | Yes (TO-99) | Yes (TO-99) | No (plastic DIP) |
Key Differentiators
- Hermetic TO-99 metal can with M-grade rating (vs OPA2107KP)
- Difet process upgrade over BIFET-era duals (vs OPA2107KP)
- Same-die drop-in within family (vs OPA2107AM)
Design Notes
The TO-99 metal can has wire terminals intended for through-hole mounting. Keep the loop area between V+ (pin 8), V- (pin 4), and decoupling capacitors as small as possible: place 100 nF ceramic capacitors directly from each supply pin to a local ground point. The can itself should be tied to ground or V- for electrostatic shielding - many legacy military drawings ground the case via a dedicated star washer. On new PCBs, a standard 8-pin round TO-99 socket pattern works, but for low-bias-current performance use a PTFE or low-leakage socket rather than a phenolic one.
The OPA2107BM is not rail-to-rail: input common-mode and output swing must stay within the datasheet limits relative to the Β±18V rails. Designers converting from modern RRIO op amps often violate output headroom at high supply voltages, causing clipping well before the rail. Also, since the part is EOL in the metal can, any BOM should second-source the same-family grade variants (AM/SM) at design time, not after stock runs out. Verify date codes when buying excess stock, as counterfeited Burr-Brown metal-can parts circulate in the open market.
Estimated: the TO-99 metal can has a relatively high junction-to-ambient thermal resistance compared with modern packages, and the OPA2107 dual quiescent current flows continuously in both channels. At Β±18V rails the per-channel supply power alone can reach several hundred milliwatts, so total dissipation at full output load should be computed as (V+ - VOUT)*IOUT + (VOUT - V-)*IOUT plus quiescent power. Keep load currents light (instrumentation loads, not 600-ohm headphone drivers) and confirm junction temperature stays within the M-grade rating for long-term reliability in sealed avionics enclosures.
Compliance Information
Hermetic metal-can military-grade legacy part; compliance declarations are not published in the verified data. Lead-based terminal plating may be present and exempted for high-reliability end uses - confirm with supplier before EU-market shipments.
