STPM12 datasheet(7/43 Pages) STMICROELECTRONICS

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STPM11/12/13/14

Electrical characteristics

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Electrical characteristics

Table 4.

Electrical characteristics

(VCC =5V, TA= 25°C, 2.2µF between VDDA and VSS, 2.2µF between VDDD and VSS, 2.2µF

between VCC and VSS unless otherwise specified)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Energy measurement accuracy

fBW

Effective bandwidth

Limited by digital filtering

400

Error

Measurement error

Over the dynamic range (5% to

1000% of the calibration power

value)

0.1

SNR

Signal to noise ratio

Over the entire bandwidth

PSRRDC Power supply DC rejection

Voltage signal: 200

mVrms/50Hz Current signal: 10

mVrms/50Hz fCLK= 4.194 MHz

VCC=3.3V±10%, 5V±10%

0.2

PSRRAC Power supply AC rejection

Voltage signal: 200

mVrms/50Hz Current signal: 10

mVrms/50Hz fCLK= 4.194 MHz

VCC=3.3V+0.2Vrms1@100Hz

VCC=5.0V+0.2Vrms1@100Hz

0.1

General section

VCC

Operating supply voltage

3.0

5.5

ICC

Supply current configuration

registers cleared or device

locked (TSTD=1)

4 MHz, VCC = 5V

3.5

8 MHz, VCC = 5V

4.7

∆ICC

Increase of supply current per

configuration bit, during

programming

4 MHz, VCC = 5V

120

µA/bit

Increase of supply current per

configuration bit with device

locked

4 MHz, VCC = 5V

POR

Power on reset on VCC

2.5

VDDA

Analog supply voltage

2.85

3.0

3.15

VDDD

Digital supply voltage

1.425

1.50

1.575

fCLK

Oscillator clock frequency

MDIV bit = 0

4.000

4.194

MHz

MDIV bit = 1

8.000

8.192

MHz

fLINE

Nominal line frequency

VOTP

OTP programming voltage

IOTP

OTP programming current per

bit

2.5

tOTP

OTP programming time per bit

100

300

µs

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