From 559701368139e227affdec2fccbdd88ebfee06b0 Mon Sep 17 00:00:00 2001 From: PhillipRambo <93056982+PhillipRambo@users.noreply.github.com> Date: Mon, 2 Dec 2024 12:57:52 +0100 Subject: [PATCH] Update design_of_ota.md --- .../part_1_OTA/design_of_ota.md | 21 ++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/modules/module_1_bandgap_reference/part_1_OTA/design_of_ota.md b/modules/module_1_bandgap_reference/part_1_OTA/design_of_ota.md index 2e3a5b08..55414dfd 100644 --- a/modules/module_1_bandgap_reference/part_1_OTA/design_of_ota.md +++ b/modules/module_1_bandgap_reference/part_1_OTA/design_of_ota.md @@ -1,3 +1,22 @@ +Two-Stage OTA Implementation in Xschem + +The first step in the procedure is to create the schematic for the two-stage OTA used in the design. Begin by creating an Xschem file with the following command: + +``` + touch two_stage_OTA.sch +``` + +Step 2: Instantiating Transistors + +Next, instantiate six MOSFETs (three PMOS and two NMOS) using the IHP Open PDK. Refer to the foundation markdown file from Module 0 for guidance on adding these components. Arrange the transistors as illustrated below, configuring their parameters accordingly: +

+ +To locate the required labels, open the Components Manager and search for iopin.sym under xschem_library/devices. + + + +# Two Stage OTA implimentation in Xschem + First step in our procedure is to create the schematic for the OTA we will use in our design. To do this create a xschem file by typing ``` @@ -28,7 +47,7 @@ For clarity, here are the transistor dimensions for the initial stage: Proceed to draw the output stage, which includes a Miller compensation capacitor. Follow the configuration shown below: -

+

Dimensions for the output stage components are as follows: