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STPM32 Datasheet(PDF) 19 Page - STMicroelectronics

Part # STPM32
Description  ASSP for metering applications with up to four independent 24-bit 2nd order sigma-delta ADCs, 4 MHz OSF and 2 embedded PGLNA
PDF  121 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STPM32 Datasheet(HTML) 19 Page - STMicroelectronics

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DS10272 Rev 8
19/121
STPM32, STPM33, STPM34
Electrical characteristics
121
External Clock Input (CLKIN/XTAL2)(3)
VIH
Input high-voltage
Vcc=3.3V
0.8
-
3.3
V
VIL
Input low-voltage
Vcc=3.3V
-0.3
-
0.1
V
Energy measurement accuracy
AP
Active power
Over dynamic range 5000:1
PGA = 2 to 16
-
0.1
-
%
Over dynamic range 10000:1
PGA = 2 to 16
-
0.5
-
RP
Reactive power
Over dynamic range 2000:1
PGA = 2 to 16
-
0.1
-
RMS
Voltage RMS
Over dynamic range 1:200
-
0.5
-
%
Current RMS
Over dynamic range 1:500
-
0.5
-
-
fBW
Effective bandwidth
-3 dB, HPF = 1
4
-
3600
Hz
Sigma-delta ADC performance
OSF
Oversampling
frequency
-
-
4
-
MHz
DR
Decimation ratio
-
-
1/512
-
-
Fs
Sampling frequency
-
-
7.8125
-
kHz
FBW
Flat band
< 0.05 dB allowed ripple
2
-
-
kHz
BW
Effective bandwidth
-3 dB, HPF = 0
0
-
3600
Hz
DC measurement accuracy
PSRRAC
Power supply AC
rejection(2)
Voltage input shorted
Current input shorted
VCC = 3.3 V ± 150 mVp at 1 kHz
-65
-
dB
SPI timings(3)
t_en
Time between selection
and clock
-50
-
-
ns
t_clk
Clock period
-
50
-
-
ns
t_cpw
Clock pulse width
-
25
-
-
ns
t_setup
Set-up time before
slave sampling
-10
-
-
ns
t_hold
Hold time after slave
sampling
-40
-
-
ns
Table 5. Electrical characteristics (continued)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit



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