OPA602SM - 6.5MHz Precision Difet Op Amp | TI Burr-Brown
MPN: OPA602SM β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
Drop-in alternatives for OPA602SM β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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OPA602AM
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
OPA602BM
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
OPA602CM
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
OPA602AP
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
Contact for price
View Datasheet βOPA602AU
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$8.1 / Unit
View Datasheet βOPA602SM Maximum Ratings & Electrical Characteristics
| Amplifier Type | High-Speed Precision Difet Operational Amplifier |
| Number of Channels | 1 |
| Bandwidth | 6.5 MHz |
| Slew Rate | 35 V/us |
| Input Offset Voltage | +/- 250 uV max |
| Input Bias Current | +/- 1 pA max |
| Settling Time | to 0.01% |
| Unity-Gain Stable | Yes |
| Capacitive Load Drive | up to 1500 pF |
| Rated Load Condition | 1k resistor in parallel with 500 pF |
| Temperature Grade | Military |
| Package | TO-99 metal can, 8 terminals, round |
| Terminal Form | Wire (through-hole) |
| Mounting Type | Through Hole |
| Process Technology | Monolithic Difet (dielectrically isolated FET) |
OPA602SM Pin Configuration
| Pin 1 | TRIM A β Offset trim network connection A (per datasheet) |
| Pin 2 | -IN β Inverting input |
| Pin 3 | +IN β Non-inverting input |
| Pin 4 | V- β Negative power supply |
| Pin 5 | NC β Not connected (per datasheet) |
| Pin 6 | OUT β Amplifier output |
| Pin 7 | V+ β Positive power supply |
| Pin 8 | TRIM B β Offset trim network connection B (per datasheet) |
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
OPA602SM is suitable for 6 applications: Precision Instrumentation, Optoelectronics / Photodiode Amplification, Sonar and Ultrasound Signal Chains, Active Filter and Precision Buffer Stages, Test and Measurement Equipment, Analog Computing and Multiplier-Based Signal Processing.
Precision Instrumentation
The OPA602SM fits precision instrumentation front ends because its +/- 250 uV maximum offset voltage, +/- 1 pA maximum bias current, and laser-trimmed input stage hold DC errors below the resolution of typical 16-bit signal chains while still offering 6.5 MHz bandwidth for dynamic measurements. In transducer amplifiers, it is placed as the first gain stage with precision feedback resistors; the Difet inputs keep bias-current errors negligible with source impedances up to megaohms. Settling to 0.01% supports multiplexed and pulsed measurement architectures, and unity-gain stability with 1500 pF capacitive load drive simplifies buffering of long shielded cables in test and data acquisition systems.
Recommended
Optoelectronics / Photodiode Amplification
The OPA602SM is well suited to optoelectronic receivers because the +/- 1 pA maximum input bias current and Difet input stage keep photodiode current-to-voltage conversion errors in the picoampere region, while the 35 V/us slew rate and 6.5 MHz bandwidth handle fast optical pulses without slew-induced distortion. In a transimpedance configuration, the amplifier sits directly at the photodiode anode with a high-value feedback resistor; the low input current means feedback resistor values of 1 megaohm or more remain practical. Its ability to drive 1500 pF helps when the TIA output must feed a shielded cable, and offset trim pins allow sub-100 uV output-nulling for dark-current compensation.
Recommended
Sonar and Ultrasound Signal Chains
Sonar and ultrasound receive chains demand both speed and accuracy, and the OPA602SM delivers 35 V/us slew rate and 0.01% settling time for fast transient capture while the +/- 250 uV offset preserves small-signal fidelity between transmit pulses. Listed by the manufacturer datasheet as a target application, the part typically serves as a gain stage or active filter element after the transducer preamplifier, where its low distortion and wide bandwidth minimize AC errors on the received echo waveform. The military temperature grade of the SM suffix is a natural fit for harsh maritime and field-deployed sonar environments where commercial grades are out of specification.
Recommended
Active Filter and Precision Buffer Stages
Because the OPA602SM is unity-gain stable and drives capacitive loads up to 1500 pF, it is a strong choice for active low-pass and band-pass filter stages operating at hundreds of kilohertz and for buffering precision references into heavy capacitive loads. The 6.5 MHz gain-bandwidth keeps filter Q accurate at the target corner frequency, while the picoampere bias current prevents the large resistors used in low-frequency precision filters from introducing offset errors. Specifications are rated with a 1k resistor in parallel with 500 pF, so designers can rely on characterized drive capability rather than extrapolated small-signal numbers when cascading filter sections.
Recommended
Test and Measurement Equipment
In bench and rack instrumentation, the OPA602SM provides the combination of laser-trimmed DC accuracy and 6.5 MHz speed needed for front-end amplifiers, integrators, and signal-conditioning channels in DMMs, curve tracers, and data acquisition modules. The +/- 1 pA bias current supports high-voltage probe buffering through large series resistors without loading error, and the 35 V/us slew rate preserves fast step response during range changes. The TO-99 metal can also offers inherent shielding against stray pickup, beneficial in low-level measurement front ends; the SM military grade extends reliability over extended temperature and mission profiles.
Recommended
Analog Computing and Multiplier-Based Signal Processing
Legacy analog computing blocks - multipliers, integrators, and log/antilog circuits - benefit from the OPA602SM's blend of DC precision and speed. Around devices such as the MPY100 multiplier, the OPA602SM serves as the output summing amplifier or active filter, where its +/- 250 uV offset keeps scaling errors small and 35 V/us slew rate tracks fast modulation signals. The 0.01% settling specification matches the accuracy class of precision analog multipliers, and low bias current preserves the accuracy of high-value summing resistors. TO-99 through-hole construction also suits maintainable, serviceable analog compute boards in industrial retrofits.
Recommended
Recommended Products Summary
Engineering reference data for OPA602SM β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | OPA602AM | OPA602BM | OPA602CM | OPA602AP | OPA602AU |
|---|---|---|---|---|---|---|
| Package | TO-99 (8-pin metal can) | TO-99 (8-pin metal can) - same | TO-99 (8-pin metal can) - same | TO-99 (8-pin metal can) - same | TO-99 (8-pin metal can) - same | TO-99 (8-pin metal can) - same |
| Brand | Texas Instruments (Burr-Brown) | Texas Instruments (Burr-Brown) | Texas Instruments (Burr-Brown) | Texas Instruments (Burr-Brown) | Texas Instruments (Burr-Brown) | Texas Instruments (Burr-Brown) |
| Bandwidth | 6.5 MHz | 6.5 MHz | 6.5 MHz | 6.5 MHz | 6.5 MHz | 6.5 MHz |
| Slew Rate | 35 V/us | 35 V/us | 35 V/us | 35 V/us | 35 V/us | 35 V/us |
| Input Bias Current | +/- 1 pA max | +/- 1 pA max | +/- 1 pA max | +/- 1 pA max | +/- 1 pA max | +/- 1 pA max |
| Offset Voltage | +/- 250 uV max | Grade-dependent limit | Grade-dependent limit | Grade-dependent limit (widest) | Grade-dependent limit | Grade-dependent limit |
| Temperature Grade | Military | Premium high grade | Industrial grade | Commercial grade | Commercial grade | Commercial grade |
| Capacitive Load Drive | up to 1500 pF | up to 1500 pF | up to 1500 pF | up to 1500 pF | up to 1500 pF | up to 1500 pF |
| Settling Time | to 0.01% | to 0.01% | to 0.01% | to 0.01% | to 0.01% | to 0.01% |
Key Differentiators
- Military temperature screening (vs OPA602AU)
- Same-die grade flexibility (vs OPA602BM)
- TO-99 metal can shielding (vs OPA602AP)
Design Notes
Grade-suffix substitution is the most common pitfall in the OPA602 family. All suffixes (AM, BM, CM, SM, AP, AU) share the same die and TO-99-8 pinout, but offset, drift, and temperature-range limits differ by grade. Substituting a CM for the SM in a military program is a compliance failure even though the circuit works electrically. Confirm the required grade in the procurement specification before cross-suffixing, and verify per-grade limits in the TI OPA602 datasheet.
The TO-99 metal can is a through-hole package; on a modern PCB, provide generous pad geometry and keep the guard ring around pins 2 and 3 when bias current really matters. A driven guard connected to the input common-mode potential reduces board leakage well below the amplifier's 1 pA maximum bias. Clean flux residue thoroughly or use a conformal coat - 1 pA is easily swamped by board contamination across the input pins.
The OPA602 is unity-gain stable and characterized with a 1k resistor in parallel with 500 pF load, and drives up to 1500 pF, but capacitive loads beyond that reduce phase margin. If driving long cables, isolate the amplifier with a series resistor or add a BUF634 buffer stage. Use the offset trim pins (1 and 8) with the recommended trim network only after layout is finalized, since trimming compensates board leakage offsets as well as input offset.
Compliance Information
Military-grade TO-99 metal-can legacy device; compliance declarations were not present in the verified web data as of 2026-09-13. Confirm RoHS/lead status with TI or the distributor, as hermetic metal-can military parts may be exempt from RoHS.
