Micro-DMM
oihdesigns
A small, open hardware DMM
Components (49)
| Reference | Value | Description |
|---|---|---|
| Q1 | MMBT3904 | 0.2A Ic, 40V Vce, Small Signal NPN Transistor, SOT-23 |
| Q2,Q8 | SI2302 MOSFET | 4.2A Id, 20V Vds, N-Channel MOSFET, SOT-23 |
| Q6,Q7 | BSS138 | 50V Vds, 0.22A Id, 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,U8 | Opamp_Dual | Dual operational amplifier |
| 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 |
| C3 | 2.2uF | Unpolarized capacitor |
| C4,C17 | 0.1uF | Unpolarized capacitor |
| C9,C10,C15 | 4.7uF | Unpolarized capacitor |
| C16,C19 | 22uF | Unpolarized capacitor |
| C18 | 1uF | 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 | |
| J5 | POWER2 | |
| J6 | POWER1 | |
| J7,J12 | Conn_01x02_Pin | Generic connector, single row, 01x02, script generated |
| J8 | DIGITAL2 | |
| J9 | Out to Screen | Generic connector, single row, 01x04, script generated |
| J10 | ANALOG | |
| J11 | I_Input | Generic connector, single row, 01x03, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J13 | DIGITAL1 | |
| 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 |
| 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 |
| R9,R14 | 22.0K | Resistor, US symbol |
| R10,R11,R19,R20 | 10K | 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 |