Micro-DMM
oihdesigns
A small, open hardware DMM
Components (48)
| Reference | Value | Description |
|---|---|---|
| Q1 | MMBT3904 | 0.2A Ic, 40V Vce, Small Signal NPN Transistor, SOT-23 |
| Q2 | AO3400A | 4.2A Id, 20V Vds, N-Channel MOSFET, SOT-23 |
| Q6,Q7 | BSS138 | 50V Vds, 0.22A Id, N-Channel MOSFET, SOT-23 |
| Q8 | AO3400A MOSFET | 4.2A Id, 20V Vds, N-Channel MOSFET, SOT-23 |
| U1 | LM317_TO-220 | 1.5A 35V Adjustable Linear Regulator, TO-220 |
| U2,U4 | IX4426N | |
| U3 | ADS1115IDGS | Ultra-Small, Low-Power, I2C-Compatible, 860-SPS, 16-Bit ADCs With Internal Reference, Oscillator, and Programmable Comparator, VSSOP-10 |
| U5 | TLV61046ADBVR | |
| U7 | MAX1683 | IC REG CHARGE PUMP 2VIN SOT23-5 |
| U9 | TPS613222ADBV | 1.8A Step-Up Converter, 5V Output Voltage, 0.9-5.5V Input Voltage, SOT-23-5 |
| U10 | LM4040DBZ-2.5 | 2.500V Precision Micropower Shunt Voltage Reference, SOT-23 |
| U11 | LM4040DBZ-5 | 5.000V Precision Micropower Shunt Voltage Reference, SOT-23 |
| A1 | Arduino_Nano_ESP32 | Arduino Nano board based on the ESP32-S3 with a dual-core 240 MHz processor, 384 kB ROM, 512 kB SRAM. Operates at 3.3V, with 5V USB-C® input and 6-21V VIN. Features Wi-Fi®, Bluetooth® LE, digital and analog pins, and supports SPI, I2C, UART, I2S, and CAN. |
| C1,C5,C6,C18 | 1uF | Unpolarized capacitor |
| C2,C9,C10,C15 | 4.7uF | Unpolarized capacitor |
| C3 | 2.2uF | Unpolarized capacitor |
| C4,C17 | 0.1uF | Unpolarized capacitor |
| C16,C19 | 22uF | Unpolarized capacitor |
| D1 | LED | Light emitting diode |
| D4,D5 | D_Schottky | Schottky diode |
| F1 | Fuse | Fuse |
| J1,J3 | Conn_01x07_Pin | Generic connector, single row, 01x07, script generated |
| J2 | MicoSD | |
| J7,J12 | Conn_01x02_Pin | Generic connector, single row, 01x02, script generated |
| J9 | Out to Screen | Generic connector, single row, 01x04, script generated |
| J11 | I_Input | Generic connector, single row, 01x03, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J14,J15 | Barrel_Jack | DC Barrel Jack |
| J16,J17 | Conn_01x01_Socket | Generic connector, single row, 01x01, script generated |
| JP6 | Jumper_2_Bridged | Jumper, 2-pole, closed/bridged |
| L1 | 2.2uH | Inductor |
| L2 | 22uH | Inductor |
| R1 | 500 | Resistor, US symbol |
| R2 | 1K | Resistor, US symbol |
| R3 | 22K | Resistor, US symbol |
| R4 | 100K | Resistor, US symbol |
| R5 | 62.0 | Resistor, US symbol |
| R6 | 330.0 | Resistor, US symbol |
| R7,R21,R23 | 0 | Resistor, US symbol |
| R8 | 732k | Resistor, US symbol |
| R9,R14 | 22.0K | Resistor, US symbol |
| R10 | 71.5k | Resistor, US symbol |
| R17,R18 | 499.0K | Resistor, US symbol |
| R24 | 1.0M | Resistor, US symbol |
| R27 | 4.7K | Resistor, US symbol |
| RN1 | 1K x4 | 4 resistor network, parallel topology, SIP package |
| RN2 | 10k x4 | 4 resistor network, parallel topology, SIP package |
| SW1,SW2,SW4 | SW_Push | Push button switch, generic, two pins |
| SW3 | SW_SPDT | Switch, single pole double throw |