# COS8554TRB

**COSINE** · Precision Op Amps · TSSOP-14

COS8554TRB from COSINE, in a TSSOP-14. 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 | OUT1 | output | Output of amplifier 1; output voltage range extends to within millivolts of each supply rail. |
| 2 | -IN1 | input | Inverting input of amplifier 1; voltage range from -Vs -0.3V to +Vs +0.3V. |
| 3 | +IN1 | input | Non-inverting input of amplifier 1; same voltage range as -IN (-Vs -0.3V to +Vs +0.3V). |
| 4 | +Vs | power_in | Positive power supply (1.8V to 5.5V); bypass with a 0.1µF capacitor placed as close to the part as possible. |
| 5 | +IN2 | input | Non-inverting input of amplifier 2; same voltage range as -IN (-Vs -0.3V to +Vs +0.3V). |
| 6 | -IN2 | input | Inverting input of amplifier 2; voltage range from -Vs -0.3V to +Vs +0.3V. |
| 7 | OUT2 | output | Output of amplifier 2; output voltage range extends to within millivolts of each supply rail. |
| 8 | OUT3 | output | Output of amplifier 3; output voltage range extends to within millivolts of each supply rail. |
| 9 | -IN3 | input | Inverting input of amplifier 3; voltage range from -Vs -0.3V to +Vs +0.3V. |
| 10 | +IN3 | input | Non-inverting input of amplifier 3; same voltage range as -IN (-Vs -0.3V to +Vs +0.3V). |
| 11 | -Vs | power_in | Negative power supply or ground; if not connected to ground, bypass with a 0.1µF capacitor placed as close to the part as possible. |
| 12 | +IN4 | input | Non-inverting input of amplifier 4; same voltage range as -IN (-Vs -0.3V to +Vs +0.3V). |
| 13 | -IN4 | input | Inverting input of amplifier 4; voltage range from -Vs -0.3V to +Vs +0.3V. |
| 14 | OUT4 | output | Output of amplifier 4; output voltage range extends to within millivolts of each supply rail. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | COSINE |
| Package | TSSOP-14 |
| Category | Amplifiers/Comparators |
| Pins | 14 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Offset Voltage | VOS |  | 20 | 100 | µV | COS8554B/COS8552C row; table header +VS=+5V, VCM=VS/2, TA=+25°C | 4 |
| Input Offset Voltage Drift | ΔVOS/ΔT |  | 0.005 | 0.05 | µV/°C | -40°C to 125°C | 4 |
| Input Bias Current | IB |  | 100 | 500 | pA |  | 4 |
| Input Offset Current | IOS |  | 100 | 500 | pA |  | 4 |
| Common-Mode Voltage Range | VCM | -0.1 |  | 5.6 | V | VS = 5.5V | 4 |
| Common-Mode Rejection Ratio | CMRR | 120 |  |  | dB | VCM =0.1V to 4.9V | 4 |
| Open-Loop Voltage Gain | AOL | 145 |  |  | dB | VO=0.2V to 4.8V | 4 |
| Output Voltage Swing from Rail |  |  |  | 5 | mV | RL=100kΩ | 4 |
| Output Voltage Swing from Rail |  |  |  | 15 | mV | RL=10kΩ | 4 |
| Short-Circuit Current, sourcing | ISR | 7 |  |  | mA | Sourcing | 4 |
| Short-Circuit Current, sinking | ISK | -7 |  |  | mA | Sinking | 4 |
| Operating Voltage Range | VS | 1.8 |  | 5.5 | V |  | 4 |
| Power Supply Rejection Ratio | PSRR | 80 | 100 |  | dB | VS = 1.8V to 5.5V | 4 |
| Quiescent Current per Amplifier | IQ |  | 55 |  | µA | VS = 3.0V | 4 |
| Gain Bandwidth Product | GBWP |  | 1.5 |  | MHz | G=+1 | 4 |
| Slew Rate | SR |  | 0.9 |  | V/µs | G = +1, 2V Output Step | 4 |
| Voltage Noise Density | en |  | 50 |  | nV/√Hz | f=1kHz | 5 |
| Power Supply Voltage (+Vs to -Vs) |  |  |  | 6 | V |  | 3 |
| Input Voltage (relative to rails, -Vs-0.5V to +Vs+0.5V) |  | -0.5 |  | 0.5 | V | Relative to supply rails | 3 |
| Input Current |  |  |  | 10 | mA | Input terminals diode-clamped to supply rails | 3 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 3 |
| Junction Temperature |  |  |  | 150 | °C |  | 3 |
| Operating Temperature Range (absolute maximum) |  | -40 |  | 125 | °C |  | 3 |
| ESD Susceptibility, HBM |  |  |  | 2000 | V | HBM | 3 |
| DC Supply Voltage |  | 1.8 |  | 5.5 | V |  | 3 |
| Operating Ambient Temperature |  | -40 |  | 85 | °C |  | 3 |
| Package Thermal Resistance, junction-to-ambient (TSSOP14) | RθJA |  | 105 |  | °C/W | TSSOP14 package | 3 |

## CAD (KiCad official)

- Symbol: `COS8554TRB`
- Footprint: `Package_SO:TSSOP-14_4.4x5mm_P0.65mm`
- 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files: `cos8554trb-etched.step` / `cos8554trb-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cos8554trb.step` / `cos8554trb.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [COSINE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757788517072015360) (12 pp, sha256 `845c61f20f164396`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/cos8554trb-datasheet.pdf)