Isolated, Digital Output, Power Monitoring IC
with Zero-Crossing Detection, Overcurrent and Overvoltage Flagging
ACS37800
COMMON ELECTRICAL CHARACTERISTICS [1]: Valid through the full range of TA and VCC = VCC(typ), unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
ELECTRICAL CHARACTERISTICS
5 V variant
4.5
5
5.5
V
V
Supply Voltage
Supply Current
VCC
3.3 V variant
2.97
3.3
3.63
VCC(min) ≤ VCC ≤ VCC(max), no load on
output pins
ICC
–
12
15
mA
Supply Bypass Capacitor
Power-On Time
CBYPASS VCC to GND recommended
tPO
0.1
–
–
–
–
mA
µs
90
VOLTAGE INPUT BUFFER
Differential Input Range
Dynamic Input Frequency
VOLTAGE CHANNEL ADC
Sample Frequency
ΔVINR
ΔVIN = VINP – VINN(GND)
bypass_n_en = 0
–250
35
–
–
250
300
mV
Hz
fdyn_in
fS_V
–
–
32
16
–
–
–
kHz
bits
Number of Bits
ADCV_B
ADC Fullscale
ADCV_FS ΔVIN = ±250 mV, VINN= GND
–27500
27500
codes
Sensitivity
Sens(V)
ΔVINR(min) < ΔVIN < ΔVINR(max)
–
110
–
LSB / mV
Ratio of change on VCC to change in
offset at DC, 100% ±10% VCC(typ)
codes /
%VCC
PSEV_O
PSEV_S
–7
–0.1
60
–
–
7
0.1
–
Voltage Channel Power Supply Error
Ratio of change on VCC to change in
sensitivity at DC, 100% ±10% VCC(typ)
% / %VCC
Ratio of change on VCC to change in
offset, 10 Hz to 10 kHz, 10% VCC(pk-pk)
PSRRV_O
PSRRV_S
70
75
dB
dB
Voltage Channel Power Supply Rejection
Ratio
Ratio of change on VCC to change in
sensitivity, 10 Hz to 10 kHz, 10% VCC(pk-pk)
60
–
VOLTAGE CHANNEL
Internal Bandwidth
RMS Noise
BW
NV
–
–
–
1
–
–
–
kHz
mV
%
Input referred
±0.3
±0.2
Linearity Error
ELIN_V
CURRENT CHANNEL
Sample Frequency
Number of Bits
fS_C
–
–
32
16
–
–
–
kHz
bits
ADCI_B
ADC Fullscale
ADCI_FS IP = IPR(min) or IPR(max)
–27500
27500
codes
Ratio of change on VCC to change in
offset at DC, 100% ±10% VCC(nom)
codes /
%VCC
PSEI_O
PSEI_S
–60
–0.3
60
–
–
60
0.3
–
Current Channel Power Supply Error
Ratio of change on VCC to change in
sensitivity at DC, 100% ±10% VCC(nom)
% / %VCC
Ratio of change on VCC to change in
offset, 10 Hz to 10 kHz, 10% VCC(pk-pk)
PSRRI_O
PSRRI_S
65
40
dB
dB
Current Channel Power Supply Rejection
Ratio
Ratio of change on VCC to change in
sensitivity, 10 Hz to 10 kHz, 10% VCC(pk-pk)
20
–
Internal Bandwidth
BW
RIP
–
–
1
–
–
kHz
Primary Conductor Resistance
TA = 25°C
0.85
mΩ
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Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
