# CD2399

**Wuxi I-core Elec** · Audio Interface ICs · SOP-16

CD2399 from Wuxi I-core Elec, in a SOP-16. 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 | VCC | power_in | Analog power supply input; recommended 4.5V to 5.5V (5V typical), absolute maximum 6.5V. |
| 2 | REF | output | Analog reference voltage pin equal to 1/2 VCC. |
| 3 | AGND | power_in | Analog ground. |
| 4 | DGND | power_in | Digital ground. |
| 5 | CLK-O | output | System clock output pin. |
| 6 | VCO | input | Frequency adjustment pin; external resistor 10K to 50K (10K recommended), larger value lengthens delay time. |
| 7 | CC1 | passive | Current control pin 1. |
| 8 | CC0 | passive | Current control pin 0. |
| 9 | OP1-OUT | output | Output of internal op-amp 1. |
| 10 | OP1-IN | input | Input of internal op-amp 1. |
| 11 | OP2-IN | input | Input of internal op-amp 2. |
| 12 | OP2-OUT | output | Output of internal op-amp 2. |
| 13 | LPF2-IN | input | Low-pass filter 2 input pin. |
| 14 | LPF2-OUT | output | Low-pass filter 2 output pin. |
| 15 | LPF1-OUT | output | Low-pass filter 1 output pin. |
| 16 | LPF1-IN | input | Low-pass filter 1 input pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Wuxi I-core Elec |
| Package | SOP-16 |
| Category | Interface ICs |
| Pins | 16 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage (electrical) | VCC | 4.5 | 5 | 5.5 | V | VCC=5.0V, fin=1KHz, VI=100mVrms, fCK=4MHz, Ta=25℃ | 5 |
| Supply current | ICC |  | 30 | 40 | mA | VCC=5.0V, fin=1KHz, VI=100mVrms, fCK=4MHz, Ta=25℃ | 5 |
| Voltage gain | GV | -0.5 |  | 2.5 | dB | RL=47KΩ | 5 |
| Maximum output voltage | VOMAX | 1.5 | 2 | 2.5 | Vrms | THD=10% | 5 |
| Output distortion | THD |  | 0.3 | 1 | % | filter=Audio | 5 |
| Output noise voltage | NO |  | -90 | -80 | dBV | filter=A-weighting | 5 |
| Power supply ripple rejection | PSRR |  | -40 | -30 | dB | ΔVCC=-20dBV(0.1Vrms), f=100Hz | 5 |
| Supply voltage (recommended) | VCC | 4.5 | 5 | 5.5 | V |  | 4 |
| Clock frequency | fCK | 4 |  | 5 | MHz |  | 4 |
| Supply voltage (absolute max) | VCC |  |  | 6.5 | V | Tamb=25℃ | 4 |
| Supply current (absolute max) | ICC |  |  | 100 | mA | Tamb=25℃ | 4 |
| Power dissipation | PD |  |  | 1.7 | W | Tamb=25℃ | 4 |
| Operating temperature | TOPR | -20 |  | 85 | °C |  | 4 |
| Storage temperature | TSTG | -25 |  | 125 | °C |  | 4 |
| Soldering temperature (SOP package) | TL |  |  | 250 | °C | 10 s, SOP package | 4 |

## CAD (KiCad official)

- Symbol: `CD2399`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOP-16 (KiCad packages3D, STEP)
- 3D model files: `cd2399-etched.step` / `cd2399-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cd2399.step` / `cd2399.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Wuxi I-core Elec datasheet](docs/cd2399-datasheet.pdf) (9 pp, sha256 `a866b533aa8eff49`, retrieved 2026-10-30, 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`, primary `claude-sonnet-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/cd2399-datasheet.pdf)