# CA3140EZ-MS

**MSKSEMI** · Operational Amplifier · DIP-8

CA3140EZ-MS from MSKSEMI, in a DIP-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 | OA1 | passive | Offset adjustment (失调调整) terminal for nulling the input offset voltage; the datasheet gives no limits for this pin. |
| 2 | IN- | input | Inverting input of the amplifier. |
| 3 | IN+ | input | Non-inverting input of the amplifier. |
| 4 | V- | power_in | Negative power supply terminal; recommended supply is ±15V with absolute maximum supply of ±18V. |
| 5 | OA2 | passive | Offset adjustment (失调调整) terminal for nulling the input offset voltage; the datasheet gives no limits for this pin. |
| 6 | OUT | output | Amplifier output; the datasheet specifies output swing of -14V to +12V at RL=2kΩ. |
| 7 | V+ | power_in | Positive power supply terminal; recommended supply is ±15V with absolute maximum supply of ±18V. |
| 8 | ST | input | Strobe (选通) pin; the datasheet names the function but gives no logic levels, timing, or limits for it. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | DIP-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 |
|---|---|---|---|---|---|---|---|
| Input offset voltage (25℃) | /VIO/ |  |  | 5 | mV | TA=25℃, VS=±15V | 5 |
| Input offset voltage (full temperature range) | /VIO/ |  |  | 6.5 | mV | VS=±15V, -25℃≤TA≤125℃ | 5 |
| Input offset voltage temperature coefficient | /αVIO/ |  |  | 24 | μV/℃ | VS=±15V, -25℃≤TA≤125℃ | 5 |
| Input offset current (25℃) | /IIO/ |  |  | 20 | pA | TA=25℃, VS=±15V | 5 |
| Input offset current (full temperature range) | /IIO/ |  |  | 1000 | pA | VS=±15V, -25℃≤TA≤125℃ | 5 |
| Input bias current (25℃) | /IIB/ |  |  | 40 | pA | TA=25℃, VS=±15V | 5 |
| Input bias current (full temperature range) | /IIB/ |  |  | 1500 | pA | VS=±15V, -25℃≤TA≤125℃ | 5 |
| Open-loop voltage gain (25℃) | AVO | 86 |  |  | dB | VO=-14V~12V, RL=2kΩ, TA=25℃ | 5 |
| Open-loop voltage gain (full temperature range) | AVO | 80 |  |  | dB | VO=-14V~12V, RL=2kΩ, -25℃≤TA≤125℃ | 5 |
| Common-mode rejection ratio (25℃) | KCMR | 70 |  |  | dB | VCM=-14V~11V, TA=25℃ | 5 |
| Common-mode rejection ratio (full temperature range) | KCMR | 64 |  |  | dB | VCM=-14V~11V, -25℃≤TA≤125℃ | 5 |
| Power supply rejection ratio (25℃) | KSVR | 76 |  |  | dB | VS=±5V~±15V, TA=25℃ | 5 |
| Power supply rejection ratio (full temperature range) | KSVR | 70 |  |  | dB | VS=±5V~±15V, -25℃≤TA≤125℃ | 5 |
| Output peak-to-peak voltage, positive swing (25℃) | VOPP | 12 |  |  | V | RL=2kΩ, TA=25℃ | 5 |
| Output peak-to-peak voltage, positive swing (full temperature range) | VOPP | 11.5 |  |  | V | RL=2kΩ, -25℃≤TA≤125℃ | 5 |
| Output peak-to-peak voltage, negative swing (25℃) | VOPP | -14 |  |  | V | RL=2kΩ, TA=25℃ | 5 |
| Output peak-to-peak voltage, negative swing (full temperature range) | VOPP | -13.5 |  |  | V | RL=2kΩ, -25℃≤TA≤125℃ | 5 |
| Gain-bandwidth product | G•BW | 3.5 |  |  | MHz | RL=2kΩ, TA=25℃ | 5 |
| Slew rate | SR | 6 |  |  | V/μs | RL=2kΩ, TA=25℃ | 5 |
| Sink current (pin 8) | ISINK8 | 160 |  |  | μA | Pin 8 tied to V-, TA=25℃ | 5 |
| Supply current | IS |  |  | 6 | mA | VS=±15V, RL=∞ | 5 |
| Supply voltage (absolute maximum) | VS | -18 |  | 18 | V |  | 4 |
| Input current (absolute maximum) | II |  |  | 1 | mA |  | 4 |
| Common-mode input voltage range (absolute maximum) | VICR | -15 |  | 12 | V |  | 4 |
| Differential input voltage range (absolute maximum) | VIDR | -8 |  | 8 | V |  | 4 |
| Storage temperature (absolute maximum) | Tstg | -65 |  | 150 | ℃ |  | 4 |
| Junction temperature (absolute maximum) | Tj |  |  | 150 | ℃ |  | 4 |
| Lead soldering temperature (absolute maximum) | Th |  |  | 300 |  | 10s | 4 |
| Supply voltage (recommended operating) | VS | -15 |  | 15 | V |  | 4 |
| Operating ambient temperature (recommended operating) | TA | -25 |  | 125 | ℃ |  | 4 |

## CAD (KiCad official)

- Symbol: `CA3140EZ-MS`
- Footprint: `Package_DIP:DIP-8_W7.62mm`
- 3D model: DIP-8 (KiCad packages3D, STEP)
- 3D model files: `ca3140ez-ms-etched.step` / `ca3140ez-ms-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ca3140ez-ms.step` / `ca3140ez-ms.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MSKSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603371703435751424) (8 pp, sha256 `c24c6cb56f99be14`, retrieved 2026-10-15, 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-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/ca3140ez-ms-datasheet.pdf)