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oihdesigns
A small, open hardware DMM
| Reference | Value | Description |
|---|---|---|
| Q1 | MMBT3904 | 0.2A Ic, 40V Vce, Small Signal NPN Transistor, SOT-23 |
| Q2,Q8 | AO3400A 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 |
| Dual operational amplifier |
| U7 | MAX1683 | IC REG CHARGE PUMP 2VIN SOT23-5 |
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| U9 | TPS613222ADBV | 1.8A Step-Up Converter, 5V Output Voltage, 0.9-5.5V Input Voltage, SOT-23-5 |
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| U10 | LM4040DBZ-2.5 | 2.500V Precision Micropower Shunt Voltage Reference, SOT-23 |
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| U11 | LM4040DBZ-5 | 5.000V Precision Micropower Shunt Voltage Reference, SOT-23 |
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| U12 | TLV61046ADBVR |
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| C1,C5,C6,C18 | 1uF | Unpolarized capacitor |
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| C2,C9,C10,C15 | 4.7uF | Unpolarized capacitor |
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| C3 | 2.2uF | Unpolarized capacitor |
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| C4,C17 | 0.1uF | Unpolarized capacitor |
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| C16,C19 | 22uF | Unpolarized capacitor |
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| D1 | LED | Light emitting diode |
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| D4,D5 | D_Schottky | Schottky diode |
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| F1 | Fuse | Fuse |
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| J1 | TRRS | Generic connector, single row, 01x04, script generated |
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| J4 | A_Extended |
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| J5 | POWER2 |
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| J6 | POWER1 |
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| J7,J12,J19 | Conn_01x02_Pin | Generic connector, single row, 01x02, script generated |
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| J8 | DIGITAL2 |
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| J9 | Out to Screen | Generic connector, single row, 01x04, script generated |
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| J10 | ANALOG |
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| J11 | I_Input | Generic connector, single row, 01x03, script generated (kicad-library-utils/schlib/autogen/connector/) |
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| J13 | DIGITAL1 |
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| J14,J15 | Barrel_Jack | DC Barrel Jack |
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| J16,J17 | Conn_01x01_Socket | Generic connector, single row, 01x01, script generated |
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| J18 | DIOs_Extended |
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| J21 | Conn_02x18_Odd_Even | Generic connector, double row, 02x18, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
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| JP6 | Jumper_2_Bridged | Jumper, 2-pole, closed/bridged |
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| L1 | 2.2uH | Inductor |
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| L2 | 22uH | Inductor |
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| R1 | 500 | Resistor, US symbol |
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| R2 | 1K | Resistor, US symbol |
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| R3 | 22K | Resistor, US symbol |
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| R4 | 100K | Resistor, US symbol |
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| R5 | 62.0 | Resistor, US symbol |
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| R6 | 330.0 | Resistor, US symbol |
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| R7,R21-R23 | 0 | Resistor, US symbol |
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| R8 | 71.5k | Resistor, US symbol |
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| R9 | 22.0K | Resistor, US symbol |
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| R10,R11,R19,R20 | 10K | Resistor, US symbol |
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| R14 | 15.0K | Resistor, US symbol |
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| R17,R18 | 499.0K | Resistor, US symbol |
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| R24 | 1.0M | Resistor, US symbol |
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| R25 | 732k | Resistor, US symbol |
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| R27 | 4.7K | Resistor, US symbol |
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| RN1 | 1K x4 | 4 resistor network, parallel topology, SIP package |
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| RN2 | 10k x4 | 4 resistor network, parallel topology, SIP package |
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| SW1,SW2,SW4 | SW_Push | Push button switch, generic, two pins |
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| SW3 | SW_SPDT | Switch, single pole double throw |
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