OPA2107AP - Precision Dual Difet Op Amp 4.5MHz | TI
MPN: OPA2107AP β Active| Qty | Unit Price | Extended |
|---|---|---|
| 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 |
Drop-in alternatives for OPA2107AP β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
OPA2107BP
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
OPA2604AP
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
OPA2991P
β Drop-Inπ Reference alternative (not in catalog)
NE5532P
β Drop-Inπ Reference alternative (not in catalog)
MC33272APG
β Drop-Inπ Reference alternative (not in catalog)
OPA2107AP Maximum Ratings & Electrical Characteristics
| 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) |
| Package | 8-PDIP (DIP-8) |
| Mounting Type | Through Hole |
OPA2107AP 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 (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 (to +18 V) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
OPA2107AP is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for OPA2107AP β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 Offset Voltage (max) | 1 mV | tighter than AP grade (per datasheet) | [DATA_NEEDED] | 0.75 mV | [DATA_NEEDED] | [DATA_NEEDED] |
| 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 |
| Supply Voltage Range | +/-10 V to +/-18 V | +/-10 V to +/-18 V | [DATA_NEEDED] | 4.5 V to 36 V (wide, incl. single supply) | +/-3 V to +/-20 V (class) | [DATA_NEEDED] |
| 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 |
Key Differentiators
- Difet FET input with 10 pA max bias current (vs NE5532P)
- TI-designated upgrade path exists (vs OPA2991P)
- Same-socket precision grade upgrade (vs OPA2107BP)
Design Notes
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.
Compliance Information
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.
