Parts · ICs
TLC27M4ALN
Quad CMOS-Input Op-Amp DIP-14.3 circuits use this part. Listed as: Semiconductors.
Datasheet · from ti.com
Substitutes same socket
Parts that fit the same socket: the same function, pin count and pinout. The figures are read off each part's datasheet (this one's from page 7), typical where the sheet gives a typical value, otherwise the maximum. Closest first; the last column says what differs. A different part can change the sound, and a circuit may lean on one particular figure, so read the build document's notes before you swap.
This part
| Part | Input | Supply | GBW | Slew | Noise | Iq | Boards |
|---|---|---|---|---|---|---|---|
| TLC27M4AIN | CMOS | 3–16 V | 1.1 MHz | 4.5 V/µs | 32 nV | 0.06 mA | 8 |
Low-power CMOS quad limited to 16 V; the input range includes the negative rail (single-supply friendly).
Fits the same socket
| Part | Input | Supply | GBW | Slew | Noise | Iq | Boards | Differs |
|---|---|---|---|---|---|---|---|---|
| TL064 | JFET | 10–30 V | 1 MHz | 3.5 V/µs | 30 nV | 0.2 mA | 17 | JFET input; rated from 10 V; draws 0.2 mA per amplifier. Low-power JFET quad at 200 µA per amplifier. |
| LMC660CN | CMOS, RR out | 4.75–15.5 V | 1.4 MHz | 1.1 V/µs | 22 nV | 0.4 mA | 4 | rail-to-rail output; draws 0.4 mA per amplifier; much slower. CMOS quad limited to 15.5 V total; rail-to-rail output and an input range that includes ground. |
| TLC2274 | CMOS, RR out | 4.4–16 V | 2.25 MHz | 3.6 V/µs | 9 nV | 1.2 mA | 1 | rail-to-rail output; draws 1.2 mA per amplifier. CMOS rail-to-rail-output quad limited to 16 V total. |
| LF444 | JFET | ?–36 V | 1 MHz | 1 V/µs | 35 nV | 0.15 mA | 4 | JFET input; much slower. Low-power JFET quad at about 150 µA per amplifier. |
| 3403 | bipolar | 5–30 V | 1 MHz | 0.6 V/µs | 0.7 mA | 17 | bipolar input; draws 0.7 mA per amplifier; much slower. 741-class quad that runs from a single supply; the input range includes the negative rail and the output has a class AB stage. | |
| LM324 | bipolar | 3–30 V | 1.2 MHz | 0.5 V/µs | 35 nV | 0.35 mA | 100 | bipolar input; draws 0.35 mA per amplifier; much slower. Input range includes the negative rail and the output nears ground, but it is slow and shows crossover distortion. |
| TLC2264 | CMOS, RR out | 4.4–16 V | 0.73 MHz | 0.55 V/µs | 12 nV | 0.21 mA | 3 | rail-to-rail output; draws 0.21 mA per amplifier; much slower. CMOS rail-to-rail-output quad limited to 16 V total. |
| JRC2902 | bipolar | 3–32 V | 0.5 MHz | 0.5 V/µs | 0.25 mA | 2 | bipolar input; draws 0.25 mA per amplifier; much slower. LM324-class single-supply quad with crossover distortion; the DIP14 (NJM2902N) is listed as discontinued. | |
| LM348 | bipolar | 8–36 V | 1 MHz | 0.5 V/µs | 0.6 mA | 2 | bipolar input; draws 0.6 mA per amplifier; much slower. Four 741-class amplifiers in the LM324/TL074 pinout. | |
| TL974 | RR out | 2.7–12 V | 10.6 MHz | 2.48 mA | 1 | rail-to-rail output; draws 2.48 mA per amplifier; much faster, may oscillate in a slow part's place. Low-noise quad (4.4 nV/√Hz at 100 kHz) limited to 12 V total; it will not survive an 18 V rail. |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| Death by Audio Reverberation Machine Perfboard Verified 7805 · TLC27M4ALN Death By Audio Reverberation Machine · 1590B | Death By Audio Reverberation Machine | Fuzz | Effects Layouts (blog) | 1590B | 3 | — | 24 | |
| Space Is Fun 7805 · BTDR-2H · LM7805 · TLC27M4ALN Death By Audio Reverberation Machine | Death By Audio Reverberation Machine | Reverb | Moonn Electronics | — | 3 | €6.50 | 46 | |
| Death By Audio Reverberation Machine Vero21×17 Verified 7805 · LM7805 · TLC27M4ALN Death By Audio Reverberation Machine | Death By Audio Reverberation Machine | Reverb | Tagboard Effects | — | 3 | — | 25 |