component
BL0942
Public Made by Adomby adom
BL(Shanghai Belling) Energy Metering ICs, SSOP-10-150mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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BL0942
BL(Shanghai Belling) · Energy Metering ICs · SSOP-10-150mil
BL0942 from BL(Shanghai Belling), in a SSOP-10-150mil. 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 | VDD | power_in | Power supply pin, +3.3V; the datasheet gives VDD range 3.0 to 3.6 V and absolute maximum -0.3 to +4 V. |
| 2 | IP | input | Current channel analog input; maximum differential voltage ±42 mV (30 mV rms). |
| 3 | IN | input | Current channel analog input; maximum differential voltage ±42 mV (30 mV rms). |
| 4 | VP | input | Voltage signal input; maximum differential voltage ±100 mV (70 mV rms). |
| 5 | GND | power_in | Chip ground, 0 V reference. |
| 6 | CF1 | output | Energy status output whose function is selected through the OT_FUNX register (active energy pulse, overcurrent alarm, voltage zero-crossing or current zero-crossing). |
| 7 | SEL | input | UART/SPI mode select: 0 = UART, 1 = SPI; internal pull-down so a floating pin is UART, and it must be tied directly to VDD for SPI. |
| 8 | SCLK_BPS | input | SPI mode clock input; in UART mode this pin selects the baud rate (sampled as 0 = 4800 bps, 1 = 9600 bps). |
| 9 | RX/SDI | input | Multiplexed pin: UART RX in UART mode, SPI DIN in SPI mode; requires an external pull-up resistor in UART mode. |
| 10 | TX/SDO | output | Multiplexed pin: UART TX in UART mode, SPI DOUT in SPI mode; requires an external pull-up resistor in UART mode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL(Shanghai Belling) |
| Package | SSOP-10-150mil |
| Category | Data Converters |
| Pins | 10 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 电源电压 | VDD | 3 | 3.6 | V | 11 | ||
| 功耗 | Iop | 3 | mA | VDD=3.3V | 11 | ||
| 有功电能测量精度（大信号） | 0.2 | % | 30A~100mA 输入@ 1mohm 采样电阻 | 11 | |||
| 有功电能测量精度（小信号） | 0.4 | % | 100mA~50mA 输入@ 1mohm 采样电阻 | 11 | |||
| 有功电能测量精度（微小信号） | 0.6 | % | 50mA~10mA 输入@ 1mohm 采样电阻 | 11 | |||
| 有效值测量精度（大信号） | 0.2 | % | 30A~100mA 输入@ 1mohm 采样电阻 | 11 | |||
| 有效值测量精度（小信号） | 2 | % | 100mA~50mA 输入@ 1mohm 采样电阻 | 11 | |||
| 有效值测量精度（微小信号） | 6 | % | 50mA~10mA 输入@ 1mohm 采样电阻 | 11 | |||
| 快速有效值响应时间 | 10 | 160 | mS | 50Hz 可设置为周波/半周波 | 11 | ||
| 快速有效值响应时间 | 8.3 | 133 | mS | 60Hz | 11 | ||
| 通道间相角引起测量误差（容性） | PF08err | 0.5 | % | 相位超前 37 (PF=0.8) | 11 | ||
| 通道间相角引起测量误差（感性） | PF05err | 0.5 | % | 相位滞后 60 (PF=0.5) | 11 | ||
| AC 电源抑制（输出频率幅度变化） | ACPSRR | 0.1 | % | IP/N=100mV | 11 | ||
| DC 电源抑制（输出频率幅度变化） | DCPSRR | 0.1 | % | VP/N=100mV | 11 | ||
| 过零信号输出延时 | 570 | uS | 11 | ||||
| 模拟输入电平（电流） | 42 | mV | 电流差分输入（峰值） | 12 | |||
| 模拟输入电平（电压） | 100 | mV | 电压差分输入（峰值） | 12 | |||
| 模拟输入阻抗 | 370 | kΩ | 12 | ||||
| SEL 下拉电阻 | SEL（下拉） | 56.9 | kΩ | 12 | |||
| 模拟输入带宽 | 3.5 | kHz | -3dB | 12 | |||
| 内部电压基准 | Vref | 1.218 | V | 12 | |||
| 逻辑输入高电平 | 2.6 | V | VDD=3.3V±5% | 12 | |||
| 逻辑输入低电平 | 0.8 | V | VDD=3.3V±5% | 12 | |||
| 逻辑输出低电平 | 0.5 | V | VDD=3.3V±5%, IOL=5mA | 12 | |||
| 电源电压（极限） | VDD | -0.3 | 4 | V | T = 25 ℃ | 12 | |
| 模拟输入电压（相对于 GND） | IP,VP | -4 | 4 | V | T = 25 ℃ | 12 | |
| 数字输入电压（相对于 GND） | -0.3 | V | T = 25 ℃; max is VDD+0.3 | 12 | |||
| 数字输出电压（相对于 GND） | -0.3 | V | T = 25 ℃; max is VDD+0.3 | 12 | |||
| 工作温度 | Topr | -40 | 85 | ℃ | T = 25 ℃ | 12 | |
| 贮藏温度 | Tstr | -55 | 150 | ℃ | T = 25 ℃ | 12 |
CAD (KiCad official)
- Symbol:
BL0942 - Footprint:
Package_SO:SSOP-10_3.9x4.9mm_P1.00mm - 3D model: SSOP-10-150mil (KiCad packages3D, STEP)
- 3D model files:
bl0942-etched.step/bl0942-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bl0942.step/bl0942.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BL(Shanghai Belling) datasheet (31 pp, sha256
ec449aa15a55b775, retrieved 2026-10-21, 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).
# BL0942
**BL(Shanghai Belling)** · Energy Metering ICs · SSOP-10-150mil
BL0942 from BL(Shanghai Belling), in a SSOP-10-150mil. 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 | VDD | power_in | Power supply pin, +3.3V; the datasheet gives VDD range 3.0 to 3.6 V and absolute maximum -0.3 to +4 V. |
| 2 | IP | input | Current channel analog input; maximum differential voltage ±42 mV (30 mV rms). |
| 3 | IN | input | Current channel analog input; maximum differential voltage ±42 mV (30 mV rms). |
| 4 | VP | input | Voltage signal input; maximum differential voltage ±100 mV (70 mV rms). |
| 5 | GND | power_in | Chip ground, 0 V reference. |
| 6 | CF1 | output | Energy status output whose function is selected through the OT_FUNX register (active energy pulse, overcurrent alarm, voltage zero-crossing or current zero-crossing). |
| 7 | SEL | input | UART/SPI mode select: 0 = UART, 1 = SPI; internal pull-down so a floating pin is UART, and it must be tied directly to VDD for SPI. |
| 8 | SCLK_BPS | input | SPI mode clock input; in UART mode this pin selects the baud rate (sampled as 0 = 4800 bps, 1 = 9600 bps). |
| 9 | RX/SDI | input | Multiplexed pin: UART RX in UART mode, SPI DIN in SPI mode; requires an external pull-up resistor in UART mode. |
| 10 | TX/SDO | output | Multiplexed pin: UART TX in UART mode, SPI DOUT in SPI mode; requires an external pull-up resistor in UART mode. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL(Shanghai Belling) |
| Package | SSOP-10-150mil |
| Category | Data Converters |
| Pins | 10 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 电源电压 | VDD | 3 | | 3.6 | V | | 11 |
| 功耗 | Iop | | | 3 | mA | VDD=3.3V | 11 |
| 有功电能测量精度（大信号） | | | | 0.2 | % | 30A~100mA 输入@ 1mohm 采样电阻 | 11 |
| 有功电能测量精度（小信号） | | | | 0.4 | % | 100mA~50mA 输入@ 1mohm 采样电阻 | 11 |
| 有功电能测量精度（微小信号） | | | | 0.6 | % | 50mA~10mA 输入@ 1mohm 采样电阻 | 11 |
| 有效值测量精度（大信号） | | | | 0.2 | % | 30A~100mA 输入@ 1mohm 采样电阻 | 11 |
| 有效值测量精度（小信号） | | | | 2 | % | 100mA~50mA 输入@ 1mohm 采样电阻 | 11 |
| 有效值测量精度（微小信号） | | | | 6 | % | 50mA~10mA 输入@ 1mohm 采样电阻 | 11 |
| 快速有效值响应时间 | | 10 | | 160 | mS | 50Hz 可设置为周波/半周波 | 11 |
| 快速有效值响应时间 | | 8.3 | | 133 | mS | 60Hz | 11 |
| 通道间相角引起测量误差（容性） | PF08err | | | 0.5 | % | 相位超前 37 (PF=0.8) | 11 |
| 通道间相角引起测量误差（感性） | PF05err | | | 0.5 | % | 相位滞后 60 (PF=0.5) | 11 |
| AC 电源抑制（输出频率幅度变化） | ACPSRR | | | 0.1 | % | IP/N=100mV | 11 |
| DC 电源抑制（输出频率幅度变化） | DCPSRR | | | 0.1 | % | VP/N=100mV | 11 |
| 过零信号输出延时 | | | 570 | | uS | | 11 |
| 模拟输入电平（电流） | | | | 42 | mV | 电流差分输入（峰值） | 12 |
| 模拟输入电平（电压） | | | | 100 | mV | 电压差分输入（峰值） | 12 |
| 模拟输入阻抗 | | | 370 | | kΩ | | 12 |
| SEL 下拉电阻 | SEL（下拉） | | 56.9 | | kΩ | | 12 |
| 模拟输入带宽 | | | 3.5 | | kHz | -3dB | 12 |
| 内部电压基准 | Vref | | 1.218 | | V | | 12 |
| 逻辑输入高电平 | | 2.6 | | | V | VDD=3.3V±5% | 12 |
| 逻辑输入低电平 | | | | 0.8 | V | VDD=3.3V±5% | 12 |
| 逻辑输出低电平 | | | | 0.5 | V | VDD=3.3V±5%, IOL=5mA | 12 |
| 电源电压（极限） | VDD | -0.3 | | 4 | V | T = 25 ℃ | 12 |
| 模拟输入电压（相对于 GND） | IP,VP | -4 | | 4 | V | T = 25 ℃ | 12 |
| 数字输入电压（相对于 GND） | | -0.3 | | | V | T = 25 ℃; max is VDD+0.3 | 12 |
| 数字输出电压（相对于 GND） | | -0.3 | | | V | T = 25 ℃; max is VDD+0.3 | 12 |
| 工作温度 | Topr | -40 | | 85 | ℃ | T = 25 ℃ | 12 |
| 贮藏温度 | Tstr | -55 | | 150 | ℃ | T = 25 ℃ | 12 |
## CAD (KiCad official)
- Symbol: `BL0942`
- Footprint: `Package_SO:SSOP-10_3.9x4.9mm_P1.00mm`
- 3D model: SSOP-10-150mil (KiCad packages3D, STEP)
- 3D model files: `bl0942-etched.step` / `bl0942-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bl0942.step` / `bl0942.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [BL(Shanghai Belling) datasheet](docs/bl0942-datasheet.pdf) (31 pp, sha256 `ec449aa15a55b775`, retrieved 2026-10-21, 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/bl0942-datasheet.pdf)