JFET op-amp for low-power signal conditioning
The TL061CDR is a single JFET-input operational amplifier from Texas Instruments, delivering a gain-bandwidth product of 1 MHz with a 3.5 V/µs slew rate. Its 200 µA supply current and 30 pA input bias current suit it for battery-powered preamplifiers, active filters, and ADC driver stages where power budget is tight and high input impedance is required. The 8-SOIC package and surface-mount footprint fit standard PCB layouts for commercial-grade (0°C to 70°C) equipment such as audio mixers, test instruments, and sensor interfaces.
The 1 MHz gain-bandwidth product sets the small-signal bandwidth: expect unity-gain flatness to about 1 MHz, with usable gain of 10 up to roughly 100 kHz. The 3.5 V/µs slew rate limits large-signal output swing at higher frequencies — for a 10 V peak-to-peak output, the full-power bandwidth is about 55 kHz. That is adequate for audio-band processing and low-speed ADC drive, but not for video or high-speed data acquisition. If your application needs faster settling, a higher-slew-rate JFET op-amp like the TLV9351 (20 V/µs) is a different tier.
Supply range and input offset — practical limits
The TL061CDR operates from a single or split supply spanning 7 V to 36 V total. The 3 mV typical input offset voltage is moderate — acceptable for DC-coupled audio or level shifting, but not for precision strain-gauge or thermocouple front ends without auto-zero or calibration. The 30 pA input bias current, typical for JFET inputs, preserves signal integrity when driving from high-impedance sources like photodiodes or piezoelectric sensors.
Package and footprint: 8-SOIC
The supplier device package is 8-SOIC. No exposed pad — thermal dissipation relies on the SOIC body and PCB copper.
Lifecycle and compliance
It is ROHS3 compliant. For long-term BOM planning, the active status means it remains a qualified line item for new and sustaining production.