
Hardware design
AudioMorphology/ParrotRev2
Parrot is a 12hp Eurorack digital delay powered by a Raspberry Pi Pico microcontroller.

The TL072CD is an operational Amplifier made by STMicroelectronics in a SOIC-8 package with 8 pins. 0℃~+70℃ 100pA 10uV/℃ 15nV/√Hz@1kHz 16V/us 2 2.5mA 200pA 3mV 4MHz 60mA 6V~36V 6V~36V 86dB Built-in compensation SOIC-8 Operational Amplifier ROHS.
PCBKit's library has its KiCad symbol (Amplifier_Operational:TL072, from KiCad's library) and its footprint (Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. 1,461 are in stock at JLCPCB (part C5301861). 8 open-source boards in 4 repositories on GitHub use it.
| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Supply voltage VCC | TL072C; magnitude relative to ground, ±18 V | max 18 V | 4 |
| Input voltage Vin | TL072C; ±15 V; magnitude must not exceed the supply voltage magnitude | max 15 V | 4 |
| Differential input voltage Vid | TL072C; ±30 V | max 30 V | 4 |
| Thermal resistance junction to ambient, SO8 Rthja | TL072C; SO8 | max 125 °C/W | 4 |
| Thermal resistance junction to case, SO8 Rthjc | TL072C; SO8 | max 40 °C/W | 4 |
| Storage temperature range Tstg | TL072C | min -65 · max 150 °C | 4 |
| HBM: human body model ESD | TL072C | max 1 kV | 4 |
| MM: machine model ESD | TL072C | max 200 V | 4 |
| CDM: charged device model ESD | TL072C | max 1.5 kV | 4 |
| Supply voltage VCC | TL072C | min 6 · max 36 V | 4 |
| Operating free-air temperature range Toper | TL072C | min 0 · max 70 °C | 4 |
| Input offset voltage Vio | TL072C; VCC = ±15 V; Rs = 50 Ω; Tamb = +25 °C | typ 3 · max 10 mV | 5 |
| Input offset voltage Vio | TL072C; VCC = ±15 V; Rs = 50 Ω; Tmin ≤ Tamb ≤ Tmax | max 13 mV | 5 |
| Input offset voltage drift ΔVio/ΔT | TL072C; VCC = ±15 V | typ 10 uV/°C | 5 |
| Input offset current Iio | TL072C; VCC = ±15 V; Tamb = +25 °C | typ 5 · max 100 pA | 5 |
| Input offset current Iio | TL072C; VCC = ±15 V; Tmin ≤ Tamb ≤ Tmax | max 10 nA | 5 |
| Input bias current Iib | TL072C; VCC = ±15 V; Tamb = +25 °C | typ 20 · max 200 pA | 5 |
| Input bias current Iib | TL072C; VCC = ±15 V; Tmin ≤ Tamb ≤ Tmax | max 20 nA | 5 |
| Large signal voltage gain Avd | TL072C; VCC = ±15 V; RL = 2 kΩ; Vo = ±10 V; Tamb = +25 °C | min 25 · typ 200 V/mV | 5 |
| Large signal voltage gain Avd | TL072C; VCC = ±15 V; RL = 2 kΩ; Vo = ±10 V; Tmin ≤ Tamb ≤ Tmax | min 15 V/mV | 5 |
| Supply voltage rejection ratio SVR | TL072C; VCC = ±15 V; RS = 50 Ω; Tamb = +25 °C | min 70 · typ 86 dB | 5 |
| Supply voltage rejection ratio SVR | TL072C; VCC = ±15 V; RS = 50 Ω; Tmin ≤ Tamb ≤ Tmax | min 70 dB | 5 |
| Supply current, no load ICC | TL072C; VCC = ±15 V; Tamb = +25 °C | typ 1.4 · max 2.5 mA | 5 |
| Supply current, no load ICC | TL072C; VCC = ±15 V; Tmin ≤ Tamb ≤ Tmax | max 2.5 mA | 5 |
| Input common mode voltage range Vicm | TL072C; VCC = ±15 V; Tamb = +25 °C; minimum range ±11 V; typical range spans multiple text lines | min 11 V | 5 |
| Common mode rejection ratio CMR | TL072C; VCC = ±15 V; RS = 50 Ω; Tamb = +25 °C | min 70 · typ 86 dB | 5 |
| Common mode rejection ratio CMR | TL072C; VCC = ±15 V; RS = 50 Ω; Tmin ≤ Tamb ≤ Tmax | min 70 dB | 5 |
| Output short-circuit current Ios | TL072C; VCC = ±15 V; Tamb = +25 °C | min 10 · typ 40 · max 60 mA | 5 |
| Output short-circuit current Ios | TL072C; VCC = ±15 V; Tmin ≤ Tamb ≤ Tmax | min 10 · max 60 mA | 5 |
| Output voltage swing ±Vopp | TL072C; VCC = ±15 V; Tamb = +25 °C; RL = 2 kΩ; magnitudes of bipolar swing | min 10 · typ 12 V | 5 |
| Output voltage swing ±Vopp | TL072C; VCC = ±15 V; Tamb = +25 °C; RL = 10 kΩ; magnitudes of bipolar swing | min 12 · typ 13.5 V | 5 |
| Output voltage swing ±Vopp | TL072C; VCC = ±15 V; Tmin ≤ Tamb ≤ Tmax; RL = 2 kΩ; magnitudes of bipolar swing | min 10 V | 5 |
| Output voltage swing ±Vopp | TL072C; VCC = ±15 V; Tmin ≤ Tamb ≤ Tmax; RL = 10 kΩ; magnitudes of bipolar swing | min 12 V | 5 |
| Slew rate SR | TL072C; VCC = ±15 V; Tamb = +25 °C; Vin = 10 V; RL = 2 kΩ; CL = 100 pF; unity gain | min 8 · typ 16 V/us | 6 |
| Rise time tr | TL072C; VCC = ±15 V; Tamb = +25 °C; Vin = 20 mV; RL = 2 kΩ; CL = 100 pF; unity gain | typ 0.1 us | 6 |
| Overshoot Kov | TL072C; VCC = ±15 V; Tamb = +25 °C; Vin = 20 mV; RL = 2 kΩ; CL = 100 pF; unity gain | typ 10 % | 6 |
| Gain bandwidth product GBP | TL072C; VCC = ±15 V; Tamb = +25 °C; Vin = 10 mV; RL = 2 kΩ; CL = 100 pF; F= 100 kHz | min 2.5 · typ 4 MHz | 6 |
| Total harmonic distortion THD | TL072C; VCC = ±15 V; Tamb = +25 °C; F= 1 kHz; RL = 2 kΩ; CL = 100 pF; Av = 20 dB; Vo = 2 Vpp | typ 0.01 % | 6 |
| Equivalent input noise voltage en | TL072C; VCC = ±15 V; Tamb = +25 °C; RS = 100 Ω; F= 1 kHz; unit not printed in the supplied table text | typ 15 | 6 |
| Phase margin Øm | TL072C; VCC = ±15 V; Tamb = +25 °C | typ 45 degrees | 6 |
| Channel separation Vo1/Vo2 | TL072C; VCC = ±15 V; Tamb = +25 °C; Av = 100 | typ 120 dB | 6 |
| Pin | Name | Type |
|---|---|---|
| 1 | — | Output |
| 2 | - | Input |
| 3 | + | Input |
| 4 | V- | Power in |
| 5 | + | Input |
| 6 | - | Input |
| 7 | — | Output |
| 8 | V+ | Power in |

AudioMorphology/ParrotRev2
Parrot is a 12hp Eurorack digital delay powered by a Raspberry Pi Pico microcontroller.




niektb/sluisbrinkie-eurorack-published
Published Modules of the Sluisbrinkie project


niektb/sluisbrinkie-eurorack-published
Published Modules of the Sluisbrinkie project

<iframe src="https://pcbkit.io/embed/parts/st/TL072CD" title="TL072CD in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/st/TL072CD.jpg" alt="TL072CD" width="1200" height="900">[](https://pcbkit.io/parts/st/TL072CD)Yes. The symbol is Amplifier_Operational:TL072 and the footprint Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
SOIC-8, with 8 pins. Its footprint is drawn on this page.
STMicroelectronics publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C5301861, with 1,461 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the TS922IDT by STMicroelectronics, the LMV358B-SR by 3PEAK, the MC33178D by onsemi and the BUF634AID by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
8 boards in 4 repositories on GitHub; the most starred are listed on this page, with their KiCad files.