General/precision (RRIO, zero-drift, ultra-low-noise, nanopower, FET, EMI-hardened), high-speed & low-distortion (VFA/CFA, ADC/FDA drivers), instrumentation (INA/PGA/high-side/TIA), sensor & specialty AFE, power/driver, supplies & packaging, key specs, and design hooks.
General & Precision
General-Purpose RRIO Op Amp
Rail-to-rail I/O with modest power/bandwidth for control, buffers and filters.
Low-Offset / Zero-Drift (Chopper)
µV offset, low tempco and 0.1–10 Hz noise suitable for bridges/thermometry.
Ultra-Low-Noise Precision Op Amp
Very low en/in and distortion—instrumentation, audio, reference buffers.
Nanopower Op Amp
nA–µA IQ for battery/always-on nodes with limited bandwidth.
High-Impedance FET-Input Op Amp
pA bias currents for high-Z sources: pH, electrochemistry, photodiodes.
EMI-Hardened / Robust Op Amp
Input filtering/clamps with enhanced ESD/surge tolerance for harsh sites.
High-Speed & Low Distortion
High-Speed VFA Op Amp
High GBW/slew with compensation options for video and wideband chains.
Current-Feedback Op Amp (CFA)
Ultra bandwidth, low phase error and strong load drive for AWG/video buffers.
Low-Distortion ADC Driver
Very low THD with accurate matching and CM control to drive SAR/pipeline/DRF ADCs.
Fully-Differential Amplifier (FDA)
Differential outputs with CM control—pairs well with anti-alias filters.
Instrumentation & Measurement
Instrumentation Amplifier (INA)
High CMRR with settable gain for bridge strain/pressure sensors.
Programmable-Gain Amplifier (PGA)
Digitally set gain with channel mux and low crosstalk for multi-range DAQ.
High-Side / Differential Amplifier
Wide CM measurement and remote sense for backplane/long-line monitoring.
Low-Drift TIA
Ultra-low bias/noise with capacitive-load compensation for photo/chem currents.
Sensor & Specialty AFE
Charge Amplifier for Piezo
Charge-to-voltage with ultra-high input Z and low leakage for IEPE/piezo.
Bridge AFE Amplifier
Symmetric excite/sense with low-drift PGA for pressure/weighing.
Photodiode/PMT Front-End
Ultra-low-noise TIAs with dark-current trim and auto-range options.
Thermocouple/RTD AFE Op Amp
Low-noise/low-drift with offset calibration and CJC/excitation hooks.
Electrochemical / High-Z Probe Amp
Low bias with controllable electrode bias and depolarization tactics.
Power & Driver
Power Op Amp / Buffer
Drives low-Ω/capacitive loads with thermal protection for actuators.
DAC / Reference Buffer
Low noise/drift, C-stable and fast settling without overshoot.
High-Voltage Op Amp
±15 V and above—watch SOA/stability to drive piezo/actuators.
Transconductance / Howland Source
V→I conversion, including four-quadrant sources for electrochem/analog loads.
Supply & Packaging
Single-Supply, Low-Voltage
1.7–5.5 V common; RRIO preferred for portable/digital coexistence.
Dual-Supply, Wide-Voltage
±2.5 to ±18 V for wide linear range in industrial/instrumentation.
Dual/Quad Matched Op Amps
Better channel match/thermal coupling for multi-axis or multi-phase systems.
Key Specs & Selection
DC Accuracy
Offset/drift, CMRR/PSRR, bias/leakage and 0.1–10 Hz & wideband noise.
Dynamic Performance
GBW, slew, phase margin, capacitive stability and THD/SFDR limits.
Input/Output Traits
RRIN/RROUT, CM range, output current/headroom and overload recovery.
Power & Thermal
IQ, RθJA, thermal shutdown and distortion-power tradeoffs.
Reliability
EMI/ESD/surge, latch-up/short-circuit and auto/industrial temp ranges.
Design Hooks
Stability & Compensation
Loop-gain/phase budgeting; C-load fixes (isolation R / RC snubbers).
Noise Modeling & Budgeting
Match en/in to source-Z; integrate over BW; chopper vs 1/f tradeoffs.
Biasing & Protection
Input clamps/limiters; OVP/inversion protection; ESD/EMC-aware layout.
Reference & Grounding
Kelvin/star grounds, analog-digital partitioning and ground-bounce control.
Offset & Calibration
Zero/gain trims, temp-comp LUTs and built-in self-test hooks.
With ADCs/DACs
Pick proper drivers, AAF/reconstruction filters and CM/range matching.
Production Test & Matching
Pair channels, sweep across temp and record long-term drift.
