AD8002B

@@ -0,0 +1,43 @@+# AD8002B++**IDCHIP** · Audio Power OpAmps · SOP-8++AD8002B from IDCHIP, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | SD | input | Shutdown control input. Logic HIGH puts the chip into low-power shutdown (typ. 25µA); logic LOW enables normal operation. At 5V supply the shutdown threshold is ~1.6V and enable threshold is ~1.2V. Has an internal pull-up. |+| 2 | BYP | passive | Bypass pin for the internal VDD/2 mid-supply reference. Connect a 1µF capacitor from BYP to GND to filter the internal common-mode reference voltage and reduce power-supply noise coupling into the amplifier. |+| 3 | +IN | input | Non-inverting analog audio input to the internal op-amp. Typically AC-coupled to signal ground through an input capacitor in single-ended input applications. |+| 4 | -IN | input | Inverting analog audio input. Audio source is AC-coupled here (typ. 0.22µF) through a series input resistor (typ. 22kΩ); a feedback resistor (typ. 68kΩ) from VO1 sets the closed-loop gain (Av = -Rf/Rin). |+| 5 | VO1 | output | BTL audio output 1 (VO-). One side of the bridge-tied speaker load; connects directly to one speaker terminal with no output coupling capacitor required. Drives up to 3W into a 4Ω load (BTL) at 5V. |+| 6 | VDD | power_in | Positive supply voltage input. Operating range 2V to 6.5V; typical 5V. Decouple with a 1µF (or larger) ceramic capacitor to GND close to the pin. |+| 7 | GND | power_in | Device ground / power return. Connect to the system analog ground plane. |+| 8 | VO2 | output | BTL audio output 2 (VO+). The complementary side of the bridge-tied speaker load; drives the other speaker terminal 180° out of phase with VO1. No output DC-blocking capacitor required. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | IDCHIP |+| Package | SOP-8 |+| Category | Op-amp/Cmp |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `AD8002B`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [IDCHIP datasheet](docs/ad8002b-datasheet.pdf) (4 pp, sha256 `770c6e420402220c`, retrieved 2026-08-17, tier: lcsc)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/ad8002b-datasheet.pdf)

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