ENGT481
Keetyn
Components (33)
| Reference | Value | Description |
|---|---|---|
| U1 | OPA340NA | Single Single-Supply, Rail-to-Rail Operational Amplifier, MicroAmplifier Series, SOT-23-5 |
| U2 | BQ24040DSQR | |
| U4 | REF2033 | 3.3V Low-Drift, Low-Power, Dual-Output, VREF and VREF / 2 Voltage Reference, SOT-23-5 |
| U5 | LT1304CS8-3.3-PBF | |
| U6 | LSM6DSRTR | |
| U7 | W25N02KVZEIR TR | |
| U8 | STM32WB55RGVx | STMicroelectronics Arm Cortex-M4 MCU, 1024KB flash, 256KB RAM, 64 MHz, 1.71-3.6V, 49 GPIO, VFQFPN68 |
| C1,C9,C17-C22 | 100n | Unpolarized capacitor |
| C2,C3,C10-C12 | 100nF | Unpolarized capacitor |
| C4,C5 | 22uF | Unpolarized capacitor |
| C6 | 4.7n | Unpolarized capacitor |
| C7,C8 | C | Unpolarized capacitor |
| C13 | 4.7uF | Unpolarized capacitor |
| C16,C27 | 4u7 | Unpolarized capacitor |
| C24,C25 | 10pF | Unpolarized capacitor |
| D1,D2 | LED | Light emitting diode |
| D3 | DSS14U | Diode |
| J2 | 522071233 | |
| J3 | USB4500-03-1-A_REVA | |
| L1 | 22uH | Inductor |
| L2,L4 | 10u | Inductor |
| R1,R5-R7,R9,R10 | 5k1 | Resistor |
| R2,R3 | R | Resistor |
| R4,R11,R12 | 10k | Resistor |
| R8 | 0 ohm | Resistor |
| R13 | EXB-28V103JX, 10k Resistor Array | |
| R14-R16 | EXB-28V331JX, 330 Resistor Array | |
| R17-R20 | 3k3 | Resistor |
| R21,R22 | 0 | Resistor |
| TP1 | Battery_+ | test point |
| TP2 | Battery_- | test point |
| X1 | 32MHz | Four pin crystal, GND on pins 2 and 4 |
| X2 | 32.768kHz | Two pin crystal |