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AD2018
Public Made by Adomby adom
IDCHIP(英锐芯) Audio Amplifiers, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownAD2018
IDCHIP(英锐芯) · Audio Amplifiers · ESOP-8
AD2018 from IDCHIP(英锐芯), in a ESOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SD | input | Shutdown control: a logic high (VIH min 2.2 V) puts the amplifier into shutdown with outputs disconnected from the speaker, a logic low (VIL max 0.2 V) gives normal operation, and the pin must not be left floating. |
| 2 | BYP | output | Bias voltage output at VDD/2 that must be filtered with a CB capacitor, where 0.1 µF to 1 µF ceramic is the general range and 1 µF or larger is recommended to limit turn-on noise. |
| 3 | MODE | input | Operating mode control: a logic high (VIH min 2.2 V) selects Class-D operation, a logic low (VIL max 0.2 V) selects Class-AB, and the pin has an internal ~1.1 MΩ pull-up, so an MCU driving it in standby needs a 10 kΩ pull-down to GND. |
| 4 | IN | input | Single-ended analog audio input whose gain is set by the external input resistor Ri (AVD = 2×150 kΩ / (5 kΩ + Ri)) with an input coupling capacitor Ci forming the high-pass corner. |
| 5 | VO1 | output | Analog BTL output 1 that drives the speaker together with VO2; an optional LC filter may be added when the speaker trace exceeds about 100 mm. |
| 6 | VDD | power_in | Positive power supply with an operating range of 2.5 V to 5.0 V and an absolute maximum of 5.5 V, to be decoupled close to the pin. |
| 7 | GND | power_in | Power ground for the amplifier and its supply decoupling. |
| 8 | VO2 | output | Analog BTL output 2 that drives the speaker together with VO1 in the bridge-tied output stage. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | IDCHIP(英锐芯) |
| Package | ESOP-8 |
| Category | Amplifiers/Comparators |
| Pins | 9 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 工作电压 (AB类) | VDD | 2.5 | 5 | 5.5 | V | 3 | |
| 工作电压 (D类) | VDD | 2.5 | 5 | 5.5 | V | 4 | |
| 关断电流 (AB类) | IOFF | 1 | μA | VDD=5V,VIN=0V | 3 | ||
| 工作电压 (推荐工作条件) | VDD | 2.5 | 5 | V | 3 | ||
| 工作温度 | Topr | -40 | 85 | ℃ | 3 | ||
| SD输入高电平 | VIH | 2.2 | V | 3 | |||
| MODE输入高电平 | VIH | 2.2 | V | 3 | |||
| SD输入低电平 | VIL | 0.2 | V | 3 | |||
| MODE输入低电平 | VIL | 0.2 | V | 3 | |||
| 电源电压 | VDD | 5.5 | V | 3 | |||
| 输入电压 (max = VDD+0.3V) | VIN | -0.3 | V | 3 | |||
| 人体模型静电电压 | HBM ESD | 2000 | V | 3 | |||
| 机器模型静电电压 | MM ESD | 250 | V | 3 | |||
| 储存温度 | TS | -65 | 150 | ℃ | 3 | ||
| 节点温度 | TJ | 150 | ℃ | 3 | |||
| 焊接温度 | TL | 260 | ℃ | 10秒内 | 3 | ||
| 热阻 结到壳 (ESOP) | θJC(ESOP) | 15 | oC/W | 3 | |||
| 热阻 结到环境 (ESOP) | θJA(ESOP) | 45 | oC/W | 3 |
CAD (KiCad official)
- Symbol:
AD2018 - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
ad2018-etched.step/ad2018-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ad2018.step/ad2018.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: IDCHIP(英锐芯) datasheet (8 pp, sha256
4b5f89c28434cfa7, retrieved 2026-10-25, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).