Click to expand full text
STPMS1
Dual-channel 1-bit, 2 MHz, 1st order sigma-delta modulator with embedded PGA
Features
■ VCC supply range: 3.2 V - 5.5 V ■ Two 1st order sigma-delta modulators ■ Programmable chopper-stabilized low noise
and low offset amplifier ■ Supports 50-60 Hz AC watt meters ■ Internal low-drop regulator at 3 V (typ.) ■ Precision voltage reference: 1.23 V and 30
ppm/°C (typ.)
QFN16 (3 x 3 mm.)
Applications
■ Power metering ■ Motor control ■ Industrial process control ■ Weight scale ■ Pressure transducers
measurement applications when single or double inputs must be monitored at the same time.
Description
The STPMS1, also called a smart-sensor device, is an ASSP designed for effective measurement in power line systems utilizing the Rogowski coil, current transformer, or shunt principle.