STPMS1BPQR STMicroelectronics, STPMS1BPQR Datasheet - Page 9
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STPMS1BPQR
Manufacturer Part Number
STPMS1BPQR
Description
IC SMART SENSOR ASSP W/PGA 16QFN
Manufacturer
STMicroelectronics
Type
Smart Sensorr
Datasheet
1.STPMS1BPQR.pdf
(23 pages)
Specifications of STPMS1BPQR
Input Type
Analog
Output Type
Digital
Interface
Digital
Mounting Type
Surface Mount
Package / Case
16-VQFN
Supply Voltage (max)
5.5 V
Supply Voltage (min)
3.2 V
Product
Dual Channel Smart Sensor
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Supply
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
497-10475-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
STPMS1BPQR
Manufacturer:
STM
Quantity:
4 809
STPMS1
5
Figure 4.
Application
The choice of external components in the transduction section of the application is a crucial
point in the application design, affecting the precision and the resolution of the whole
system.
Among the several considerations, a compromise must be found between the following
needs:
1.
2.
3.
To maximize the signal to noise ratio of the current channel the voltage divider resistors ratio
should be as close as possible to that shown in
Figure 4
●
●
●
Typical values for the current sensors sensitivity are indicated in
Timing diagram
Maximize the signal to noise ratio in the voltage and current channel
Choose the current to voltage conversion ratio Ks and the voltage divider ratio in a way
that calibration can be achieved (see also the AN2299; Fast digital calibration
procedure for STPM01 based energy meters, application note)
Choose Ks to take advantage of the whole current dynamic range according to desired
maximum current and resolution.
P = 64000 imp/kWh
INOM = 5 A
IMAX = 60 A
below shows a reference schematic for an application with the following properties:
Doc ID 16524 Rev 2
Table
6.
Table
AM07833v1
AM07833v1
6.
Application
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