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BL0942

Public Made by Adom

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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.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 (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