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STPM32 Datasheet(PDF) 9 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  89 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STPM32 Datasheet(HTML) 9 Page - STMicroelectronics

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Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
Analog inputs (VIP1, VIN1, VIP2, VIN2, IIP1, IIN1, IIP2, IIN2)
VMAX
Maximum input signal levels
Voltage channels (VIP1-VIN1, VIP2-
VIN2)
-300
-
+300
mV
Current channels (IIP1-IIN1, IIP2-IIN2)
mV
Gain 2X
-300
-
+300
Gain 4X
-150
-
+150
Gain 8X
-75
-
+75
Gain 16X
-37.5
-
+37.5
Voff
Amplifier offset(2)
Shorted and grounded input
-
1
-
mV
ZVin
Voltage channel input impedance(1)
-
-
8
-
MΩ
ZIin
Current channel input differential
impedance(1)
Gain 2X
-
90
-
kΩ
Gain 4X
-
170
-
Gain 8X
-
300
-
Gain 16X
-
510
-
GERR
Channel gain error
Input VMAX/2
-
±5
-
%
Crosstalk(1)
Voltage to current channels
-
-120
-
dB
Current to voltage channels
-
-120
-
Digital I/O (EN, CLKOUT/ZCR, INT1, INT2, MISO, MOSI, SCL, SCS, SYN)
VIH
Input high-voltage
-
0.75 ·
VCC
-
3.3
V
VIL
Input low-voltage
VCC = 3.2 V
-0.3
-
0.6
V
VOH
Output high-voltage
IO = -1 mA, VCC = 3.2 V
VCC - 0.4
-
-
V
VOL
Output low-voltage
IO = +1 mA, VCC = 3.2 V
-
-
0.4
V
Digital Output (LED1, LED2)
VOH
Output high-voltage
IO = - 4 mA, VCC = 3.2
VCC - 0.4
-
-
V
VOL
Output high-voltage
IO = + 4 mA, VCC = 3.2
-
-
0.4
V
External Clock Input (CLKIN/XTAL2)(3)
VIH
Input high-voltage
VCC = 3.3 V
0.8
-
3.3
V
VIL
Input low-voltage
VCC= 3.3 V
-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
STPM32, STPM33, STPM34
Electrical characteristics
DS10272 - Rev 13
page 9/89



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