Micro-DMM
oihdesigns
A small, open hardware DMM
Components (44)
| Reference | Value | Description |
|---|---|---|
| Q1 | MMBT3904 | 0.2A Ic, 40V Vce, Small Signal NPN Transistor, SOT-23 |
| Q2,Q3 | AO3400A MOSFET | 4.2A Id, 20V Vds, N-Channel MOSFET, SOT-23 |
| U1 | RFM-0505S | |
| U2,U3 | ADuM1200AR | Dual-channel digital isolator, Bidirectional communication, 3V/5V level translation, SOIC-8 |
| U4 | ISO1540 | I2C Isolator, 2.5 kVrms, Bidirectional clock and data, SOIC-8 |
| U5 | LM317_TO-220 | 1.5A 35V Adjustable Linear Regulator, TO-220 |
| U6 | LM4040DBZ-5 | 5.000V Precision Micropower Shunt Voltage Reference, SOT-23 |
| U7,U9 | IX4426N | |
| U8 | MAX1683 | IC REG CHARGE PUMP 2VIN SOT23-5 |
| U10 | LM4040DBZ-2.5 | 2.500V Precision Micropower Shunt Voltage Reference, SOT-23 |
| U11 | ADS1115IDGS | Ultra-Small, Low-Power, I2C-Compatible, 860-SPS, 16-Bit ADCs With Internal Reference, Oscillator, and Programmable Comparator, VSSOP-10 |
| C1,C2,C7,C8 | 0.1uF | Unpolarized capacitor |
| C3,C4 | 4.7uF | Unpolarized capacitor |
| C5 | 1uF | Unpolarized capacitor |
| C6 | 2.2uF | Unpolarized capacitor |
| D1 | LED | Light emitting diode |
| D2,D3 | D_Schottky | Schottky diode |
| J1 | POWER2 | |
| J2 | POWER1 | |
| J3 | DIGITAL2 | |
| J4 | Out to Screen | Generic connector, single row, 01x04, script generated |
| J5 | ANALOG | |
| J6 | DIGITAL1 | |
| J7,J9 | Barrel_Jack | DC Barrel Jack |
| J8 | Conn_01x01_Socket | Generic connector, single row, 01x01, script generated |
| J10 | I_Input | Generic connector, single row, 01x03, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J11,J12 | Conn_01x02_Pin | Generic connector, single row, 01x02, script generated |
| R1,R18,R19 | 1K | Resistor, US symbol |
| R2 | 500 | Resistor, US symbol |
| R3 | 62.0 | Resistor, US symbol |
| R4,R5,R9,R11,R17 | 0 | Resistor, US symbol |
| R6 | 22.0K | Resistor, US symbol |
| R7 | 4.7K | Resistor, US symbol |
| R8 | 330.0 | Resistor, US symbol |
| R10 | 1M | Resistor, US symbol |
| R12 | 22K | Resistor, US symbol |
| R13 | 100K | Resistor, US symbol |
| R14 | 15K | Resistor, US symbol |
| R15,R16 | 499.0K | Resistor, US symbol |
| RN1 | 10k x4 | 4 resistor network, parallel topology, SIP package |
| RN2 | 1K x4 | 4 resistor network, parallel topology, SIP package |
| RV1 | 06TR4FA103DPR | Potentiometer, US symbol |
| RV2 | R_Potentiometer_US | Potentiometer, US symbol |
| SW1-SW3 | SW_Push | Push button switch, generic, two pins |