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MT9523CT-20BF3
Public Made by Adomby adom
Magn Tek Current Sensors, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMT9523CT-20BF3
Magn Tek · Current Sensors · SOP-8
MT9523CT-20BF3 from Magn Tek, in a SOP-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 | IP+ | passive | Positive input current terminal: pins 1 and 2 are the entry of the internal low-resistance conductor path (typically 1.0 mΩ), which is electrically isolated from the signal pins 5 to 8 (2.5 kVrms isolation, 1 min). |
| 2 | IP+ | passive | Positive input current terminal, internally paired with pin 1; the sensed current flows from pins 1 and 2 through the conductor to pins 3 and 4, and the output has a positive slope for that direction. |
| 3 | IP- | passive | Negative input current terminal, internally paired with pin 4; it is the exit of the internal conductor path from pins 1 and 2, and is electrically isolated from the signal pins 5 to 8. |
| 4 | IP- | passive | Negative input current terminal, internally paired with pin 3; it is the exit of the internal conductor path from pins 1 and 2, and is electrically isolated from the signal pins 5 to 8. |
| 5 | GND | power_in | Signal ground reference for the sensor IC, used as the reference for the analog output VOUT and reference output VZCR. |
| 6 | VZCR | output | Zero-current reference voltage output: it is 0.5×VCC (ratiometric variants, BR/UR) or a fixed 2.5 V / 1.65 V / 0.5 V / 0.33 V (fixed variants, BF/UF), and is used with VOUT for single-ended or differential measurement of the zero-current output. |
| 7 | VOUT | output | Analog voltage output that is proportional to the sensed input current, with zero-current output VOQ of 0.5×VCC for bidirectional ratiometric parts (0.1×VCC for unidirectional) or a fixed 2.5 V (bidirectional) / 0.5 V (unidirectional) in fixed-output mode. |
| 8 | VCC | power_in | Supply voltage input, specified for 5.0 V or 3.3 V DC operation (the 3.3 V variant is designated by the "3" in the part number). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Magn Tek |
| Package | SOP-8 |
| Category | Magnetic Sensors |
| 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 | 3 | 3.3 | 3.6 | V | XXBR3, XXBF3 | 8 |
| Supply current | ICC | 13 | 20 | mA | VCC=3.3V, TA=25°C | 8 | |
| Analog output low level | VOL | 0.3 | V | RL>=4.7KΩ | 8 | ||
| Output load resistance, pulled down to GND | RL | 4.7 | KΩ | 下拉到GND | 8 | ||
| Output load resistance, pulled up to VCC | RL | 4.7 | KΩ | 上拉到VCC | 8 | ||
| Output capacitive load | CL | 0.47 | 1 | nF | OUT to GND | 8 | |
| Reference output load resistance, pulled down to GND | RL_ZCR | 4.7 | KΩ | 下拉到GND | 9 | ||
| Reference output load resistance, pulled up to VCC | RL_ZCR | 4.7 | KΩ | 上拉到VCC | 9 | ||
| Reference output capacitive load | CL_ZCR | 0.47 | 1 | nF | VZCR to GND | 9 | |
| Nonlinearity error | ELIN | -1 | 0.3 | 1 | %F.S. | Full Scale | 9 |
| Sensitivity matching of Hall plates (printed ±1 converted to min/max) | SNST(match) | -1 | 1 | % | TA=25°C | 9 | |
| Input current range | IPR | -20 | 20 | A | 23 | ||
| Reference output error (printed ±10 mV) | VOE_ZCR | -10 | 10 | mV | TA=25°C | 23 | |
| Reference output error (printed ±20 mV) | VOE_ZCR | -20 | 20 | mV | TA=-40°C to 25°C | 23 | |
| Zero-current output error VOQ-VZCR (printed ±5 mV) | VOE | -5 | 5 | mV | IP=0 A, TA=25°C | 23 | |
| Zero-current output error VOQ-VZCR (printed ±20 mV) | VOE | -20 | 20 | mV | IP=0 A, TA=-40°C to 25°C | 23 | |
| Zero-current output error VOQ-VZCR (printed ±15 mV) | VOE | -15 | 15 | mV | IP=0 A, TA=25°C to 150°C | 23 | |
| Sensitivity error (printed ±1.0%) | ESNST | -1 | 1 | % | IP=20A, TA=25°C | 23 | |
| Sensitivity error (printed ±2.5%) | ESNST | -2.5 | 2.5 | % | IP=20A, TA=-40°C to 25°C | 23 | |
| Sensitivity error (printed ±2.2%) | ESNST | -2.2 | 2.2 | % | IP=20A, TA=25°C to 150°C | 23 | |
| Total output error (printed ±1.5%) | ETOT | -1.5 | 1.5 | % | IP=20A, TA=25°C | 23 | |
| Total output error (printed ±3.3%) | ETOT | -3.3 | 3.3 | % | IP=20A, TA=-40°C to 25°C | 23 | |
| Total output error (printed ±2.8%) | ETOT | -2.8 | 2.8 | % | IP=20A, TA=25°C to 150°C | 23 | |
| Supply voltage absolute maximum | VCC | 6 | V | 7 | |||
| Supply reverse voltage | VRCC | -0.1 | V | 7 | |||
| Output reverse voltage | VROUT | -0.1 | V | 7 | |||
| Continuous output source current | IOUT(source) | 40 | mA | 7 | |||
| Continuous output sink current | IOUT(sink) | 40 | mA | 7 | |||
| Operating ambient temperature | TA | -40 | 150 | ℃ | 7 | ||
| Storage temperature | TS | -50 | 150 | ℃ | 7 | ||
| Junction temperature | TJ | 165 | ℃ | 7 | |||
| Sensitivity drift due to aging (printed ±3%) | ESNST_DRIFT | -3 | 3 | % | TA=-40~150℃ | 7 | |
| Total output error drift due to aging (printed ±3%) | ETOT_DRIFT | -3 | 3 | % | TA=-40~150℃ | 7 |
CAD (KiCad official)
- Symbol:
MT9523CT-20BF3 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
mt9523ct-20bf3-etched.step/mt9523ct-20bf3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mt9523ct-20bf3.step/mt9523ct-20bf3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Magn Tek datasheet (35 pp, sha256
08a948fe97e0d65b, retrieved 2026-10-18, 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, primaryclaude-haiku-5-5(text), consensusclaude-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).