# IS31AP2005-SLS2-TR

**ISSI Integrated Silicon Solution** · Audio Amplifiers · MSOP-8

IS31AP2005-SLS2-TR from ISSI Integrated Silicon Solution, in a MSOP-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 | SDB | input | Shutdown terminal with active-low logic; the datasheet gives VIH of 1.4V minimum and VIL of 0.4V maximum for the logic levels. |
| 2 | NC | unconnected | No internal connection; the pin is not connected inside the device. |
| 3 | IN+ | input | Positive differential audio input to the fully differential amplifier, with input resistor RIN setting the gain (gain of 2V/V or lower recommended for best performance). |
| 4 | IN- | input | Negative differential audio input to the fully differential amplifier, which should be matched with IN+ resistors of 1% accuracy or better. |
| 5 | OUT+ | output | Positive bridge-tied-load (BTL) speaker output of the Class-D amplifier. |
| 6 | VCC | power_in | Power supply, rated 2.7V to 5.5V in operation with an absolute maximum of 6.0V, and decoupled with a low-ESR ceramic capacitor (typically 1μF) placed close to the pin. |
| 7 | GND | power_in | High-current ground for the amplifier output stage. |
| 8 | OUT- | output | Negative bridge-tied-load (BTL) speaker output of the Class-D amplifier. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ISSI Integrated Silicon Solution |
| Package | MSOP-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## 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 | VCC | 2.7 |  | 5.5 | V | TA= 25°C, unless otherwise noted | 5 |
| Operating temperature range | TA | -40 |  | 85 | °C |  | 5 |
| Supply voltage (absolute maximum) | VCC | -0.3 |  | 6 | V |  | 5 |
| Voltage at any input pin |  | -0.3 |  |  | V | Printed as VCC+0.3V upper limit | 5 |
| Maximum junction temperature | TJMAX |  |  | 150 | °C |  | 5 |
| Storage temperature range | TSTG | -65 |  | 150 | °C |  | 5 |
| ESD (HBM) |  | -7 |  | 7 | kV |  | 5 |
| ESD (CDM) |  | -500 |  | 500 | V |  | 5 |
| Thermal resistance, junction-to-ambient (MSOP-8) | θJA |  | 211.4 |  | °C/W | MSOP-8 package | 5 |
| Output offset voltage (measured differentially) | /VOS/ |  | 10 |  | mV | VSDB= 0V, AV= 2V/V | 5 |
| Quiescent current | ICC |  | 2.6 |  | mA | VCC= 5.5V, no load | 5 |
| Quiescent current | ICC |  | 1.2 |  | mA | VCC= 2.7V, no load | 5 |
| Shutdown current | ISD |  | 1 |  | μA | VSDB= 0.4V | 5 |
| Switching frequency | fSW |  | 250 |  | kHz |  | 5 |
| Input resistor | RIN |  | 15 |  | kΩ | Gain≤ 20V/V | 5 |
| Audio input gain | Gain |  | 2 |  | V/V | RIN= 150kΩ | 5 |
| High-level input voltage | VIH |  | 1.4 |  | V |  | 5 |
| Low-level input voltage | VIL |  | 0.4 |  | V |  | 5 |
| Output power | PO |  | 1.7 |  | W | THD+N= 10%, f= 1kHz, RL= 8Ω, VCC= 5.0V | 6 |
| Output power | PO |  | 1.2 |  | W | THD+N= 10%, f= 1kHz, RL= 8Ω, VCC= 4.2V | 6 |
| Output power | PO |  | 0.83 |  | W | THD+N= 10%, f= 1kHz, RL= 8Ω, VCC= 3.6V | 6 |
| Output power | PO |  | 2.95 |  | W | THD+N= 10%, f= 1kHz, RL= 4Ω, VCC= 5.0V | 6 |
| Output power | PO |  | 2.05 |  | W | THD+N= 10%, f= 1kHz, RL= 4Ω, VCC= 4.2V | 6 |
| Output power | PO |  | 1.55 |  | W | THD+N= 10%, f= 1kHz, RL= 4Ω, VCC= 3.6V | 6 |
| Output power | PO |  | 1.45 |  | W | THD+N= 1%, f= 1kHz, RL= 8Ω, VCC= 5.0V | 6 |
| Output power | PO |  | 0.95 |  | W | THD+N= 1%, f= 1kHz, RL= 8Ω, VCC= 4.2V | 6 |
| Output power | PO |  | 0.66 |  | W | THD+N= 1%, f= 1kHz, RL= 8Ω, VCC= 3.6V | 6 |
| Output power | PO |  | 2.5 |  | W | THD+N= 1%, f= 1kHz, RL= 4Ω, VCC= 5.0V | 6 |
| Output power | PO |  | 1.25 |  | W | THD+N= 1%, f= 1kHz, RL= 4Ω, VCC= 3.6V | 6 |
| Total harmonic distortion plus noise | THD+N |  | 0.28 |  | % | VCC= 5.0V, PO=1.0W, RL= 8Ω, f= 1kHz | 6 |
| Total harmonic distortion plus noise | THD+N |  | 0.31 |  | % | VCC= 5.0V, PO=1.2W, RL= 4Ω, f= 1kHz | 6 |
| Output voltage noise | VNO |  | 68 |  | μVrms | VCC= 3.6V~5V, f= 20Hz to 20kHz, inputs ac-grounded with CIN= 1μF, A-Weighting | 6 |
| Wake-up time from shutdown | tWU |  | 36 |  | ms | VCC= 3.6V | 6 |
| Signal-to-noise ratio | SNR |  | 92 |  | dB | PO=1.0W, RL= 8Ω, VCC= 5.0V | 6 |
| Power supply rejection ratio | PSRR |  | -65 |  | dB | VCC= 3.6V ~ 5.5V, f= 217kHz | 6 |

## CAD (KiCad official)

- Symbol: `IS31AP2005-SLS2-TR`
- Footprint: `Package_SO:MSOP-8_3x3mm_P0.65mm`
- 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files: `is31ap2005-sls2-tr-etched.step` / `is31ap2005-sls2-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `is31ap2005-sls2-tr.step` / `is31ap2005-sls2-tr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ISSI Integrated Silicon Solution datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603131946151264256) (17 pp, sha256 `532d96c331b5e1b1`, retrieved 2026-10-19, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/is31ap2005-sls2-tr-datasheet.pdf)