# CSA240LQCSOIC8

**analogysemi** · Current-Sensing Amplifiers · SOIC-8

CSA240LQCSOIC8 from analogysemi, in a SOIC-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 | IN− | input | Analog input; connect to the load side of the shunt resistor, with a common-mode input range of −6 V to 80 V (Table 5). |
| 2 | GND | power_in | Analog ground reference for the device. |
| 3 | REF2 | input | Reference 2 voltage input; connect to 0 V to VS and do not drive it below GND or above VS. |
| 4 | NC | unconnected | Reserved; connect to ground or leave floating. |
| 5 | OUT | output | Analog output voltage; the output is limited to GND − 0.3 V to VS + 0.3 V (Table 3). |
| 6 | VS | power_in | Power supply input, 2.7 V to 5.5 V. |
| 7 | REF1 | input | Reference 1 voltage input; connect to 0 V to VS and do not drive it below GND or above VS. |
| 8 | IN+ | input | Analog input; connect to the supply side of the shunt resistor, with a common-mode input range of −6 V to 80 V (Table 5). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | analogysemi |
| Package | SOIC-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 |
|---|---|---|---|---|---|---|---|
| Common-Mode Input Range | VCM | -6 |  | 80 | V | VIN+ = −6V to 80V, VSENSE = 0mV, TA = −40°C to 125°C | 6 |
| Common-Mode Rejection Ratio | CMRR | 135 | 160 |  | dB | VIN+ = −6V to 80V, VSENSE = 0mV, TA = −40°C to 125°C | 6 |
| Offset Voltage, Input-Referred | VOS | -18 | 3 | 18 | µV | VSENSE = 0mV | 6 |
| Offset Voltage Drift | dVOS/dT | -185 |  | 185 | nV/°C | VSENSE = 0mV, TA = −40°C to 125°C | 6 |
| Power-Supply Rejection Ratio | PSRR | -0.2 |  | 0.2 | µV/V | VS = 2.7V to 5.5V, VSENSE = 0mV, TA = −40°C to 125°C | 6 |
| Input Bias Current | IB |  |  | 10 | nA | IB+, IB−, VSENSE = 0mV | 6 |
| Gain (CSA240LQ) | G |  | 20 |  | V/V | CSA240LQ | 6 |
| Gain Error | Gain Error | -0.05 |  | 0.05 | % | GND + 50mV ≤ VOUT ≤ VS − 200mV | 6 |
| Gain Error Drift | TCG | -6 |  | 6 | ppm/°C | TA = −40°C to 125°C | 6 |
| Non-Linearity Error | Non-Linearity Error | -0.01 |  | 0.01 | % | GND + 10mV ≤ VOUT ≤ VS − 200mV | 6 |
| Reference Divider Accuracy | Reference Divider Accuracy |  |  | 0.01 | % | VOUT = /(VREF1 − VREF2)/ / 2 at VSENSE = 0mV, TA = −40°C to 125°C | 6 |
| Reference Voltage Rejection Ratio (Input-Referred), CSA240LQ | RVRR |  |  | 10 | µV/V | CSA240LQ | 6 |
| Maximum Capacitive Load | CL |  |  | 2 | nF | No sustained oscillation | 6 |
| Operating Voltage Range | VS | 2.7 |  | 5.5 | V | TA = −40°C to 125°C | 6 |
| Specified Temperature Range | TA | -40 |  | 125 | °C |  | 6 |
| Common-Mode Input Voltage | VCM | -6 |  | 80 | V |  | 5 |
| Operating Supply Voltage | VS | 2.7 |  | 5.5 | V |  | 5 |
| Operating Free-Air Temperature | TA | -40 |  | 125 | °C |  | 5 |
| Supply Voltage | VS |  |  | 6 | V |  | 4 |
| Analog Inputs Differential (VIN+) − (VIN−) | VIN+ − VIN− | -80 |  | 80 | V | 1s maximum duration due to package thermal dissipation | 4 |
| Analog Inputs Common-Mode | VIN+, VIN− | -6 |  | 82 | V |  | 4 |
| Operating Free-Air Temperature | TA | -40 |  | 125 | °C |  | 4 |
| Junction Temperature | TJ |  |  | 150 | °C |  | 4 |
| Storage Temperature | Tstg | -65 |  | 150 | °C |  | 4 |
| Junction-to-Ambient Thermal Resistance (SOIC-8) | RθJA |  | 90.6 |  | °C/W | SOIC-8 | 5 |
| Junction-to-Case (Top) Thermal Resistance (SOIC-8) | RθJC(top) |  | 35 |  | °C/W | SOIC-8 | 5 |
| Junction-to-Board Thermal Resistance (SOIC-8) | RθJB |  | 47.6 |  | °C/W | SOIC-8 | 5 |
| Junction-to-Top Characterization Parameter (SOIC-8) | ψJT |  | 3.6 |  | °C/W | SOIC-8 | 5 |
| Junction-to-Board Characterization Parameter (SOIC-8) | ψJB |  | 47 |  | °C/W | SOIC-8 | 5 |

## CAD (KiCad official)

- Symbol: `CSA240LQCSOIC8`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `csa240lqcsoic8-etched.step` / `csa240lqcsoic8-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `csa240lqcsoic8.step` / `csa240lqcsoic8.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [analogysemi datasheet](docs/csa240lqcsoic8-datasheet.pdf) (22 pp, sha256 `11db44027d94f937`, retrieved 2026-11-05, 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/csa240lqcsoic8-datasheet.pdf)