LF356 JFET-Input Op-Amp

@@ -0,0 +1,55 @@+# LF356++**Texas Instruments** · Operational Amplifier · SOIC-8++The LF356 is a single JFET-input operational amplifier with a 12 V/us slew rate, 5 MHz bandwidth, and fast settling time. Its JFET inputs give high input impedance and low bias current, suiting sample-and-hold circuits, DAC output buffers, fast active filters, and general high-speed analog.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | BALANCE | input | Offset-null / balance terminal for trimming input offset voltage. Connect a potentiometer between pins 1 and 5 with the wiper returned to V- (see typical application). |+| 2 | -INPUT | input | Inverting input of the op-amp (JFET gate). High input impedance ~10^12 Ω, input bias current typ. 30 pA. Absolute-max differential input ±40 V (LF15x/LF25x/LF356B) or ±30 V (LF35x). |+| 3 | +INPUT | input | Noninverting input of the op-amp (JFET gate). High input impedance ~10^12 Ω, input bias current typ. 30 pA. |+| 4 | V- | power_in | Negative power supply rail. Recommended operating range ±15 V (Vs); absolute-max supply ±22 V (LF356B) / ±18 V (LF35x). Bypass to ground with a local ceramic capacitor. |+| 5 | BALANCE | input | Offset-null / balance terminal (second end of the offset-trim pot). Connect a potentiometer between pins 1 and 5 with the wiper to V-. |+| 6 | OUTPUT | output | Op-amp output. Continuous output short-circuit protected. Drives capacitive loads up to 5,000 pF without stability problems. Large-signal voltage gain typ. 106 dB. |+| 7 | V+ | power_in | Positive power supply rail. Recommended operating range ±15 V (Vs); absolute-max supply ±22 V (LF356B) / ±18 V (LF35x). Bypass to ground with a local ceramic capacitor. |+| 8 | NC | unconnected | No internal connection. Leave floating or tie to a convenient net; do not use as a routing tie-point on critical high-impedance nodes. |++## Key specifications++| Parameter | Value |+|---|---|+| Type | Single JFET-input op-amp |+| Supply voltage | +-5 V to +-18 V |+| Input bias current | 30 pA typ |+| Slew rate | 12 V/us typ |+| Gain-bandwidth product | 5 MHz typ |+| Settling time | 1.5 us to 0.01% |+| Operating temperature | 0 C to 70 C |++## Ordering variants++- `LF356P`+- `LF356N`+- `LF356D`+- `LF356DR`+- `LF356H`+- `LF356LMC`++## CAD (KiCad official)++- Symbol: `lf356.kicad_sym`+- Footprint: `lf356.kicad_mod`+- 3D model: SOIC-8 body from KiCad `Package_SO/SOIC-8_3.9x4.9mm_P1.27mm`.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/lf356.pdf) (47 pp, sha256 `5d84a62d96b964a5`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/lf356-datasheet.pdf)

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