ade7854 Analog Devices, Inc., ade7854 Datasheet - Page 5

• Manufacturer Part Number: ade7854
• Description: Poly Phase Multifunction Energy Metering Ic With Neutral Current Measurement
• Manufacturer: Analog Devices, Inc.

Preliminary Technical Data
SPECIFICATIONS
VDD = 3.3 V ± 10%, AGND = DGND = 0 V, on-chip reference, CLKIN = 16.384 MHz, T
Table 1.
Parameter
ACCURACY
ACTIVE ENERGY MEASUREMENT
RMS MEASUREMENTS
ANALOG INPUTS
WAVEFORM SAMPLING
TIME INTERVAL BETWEEN PHASES
CF1, CF2, CF3 PULSE OUTPUTS
REFERENCE INPUT
ON-CHIP REFERENCE (PSM0 modes)
CLKIN
Input Clock Frequency
Total Active Energy Measurement Error
(per Phase)
AC Power Supply Rejection
Output Frequency Variation
DC Power Supply Rejection
Output Frequency Variation
Total Active Energy Measurement
Bandwidth
IRMS and VRMS Measurement
IRMS and VRMS Measurement Error
Maximum Signal Levels
Input Impedance (DC)
ADC Offset Error
Gain Error
Current and Voltage Channels
Signal-to-Noise Ratio
Signal-to-Noise Plus Distortion
Bandwidth (−3 dB)
Measurement error
Maximum Output Frequency
Duty Cycle
Active Low Pulse Width
Jitter
REF
Input Capacitance
Reference Error
Output Impedance
Temperature Coefficient
Crystal equivalent series resistance
Phase Error Between Channels
PF = 0.8 Capacitive
PF = 0.5 Inductive
Bandwidth
(PSM0 mode
IN/OUT
1, 2
Input Voltage Range
3
)
Specification
0.1
0.2
±0.05
±0.05
0.01
0.01
4
4
0.1
±500
400
±25
±4
55
62
4
0.3
8
50
80
0.04
1.3
1.1
10
±0.9
4
10
50
16.384
30
Rev. PrC| Page 5 of 71
Unit
% typ
% typ
°max
°max
% typ
% typ
kHz typ
kHz typ
% typ
mV peak,
Max
kΩ min
mV max
% typ
dB typ
dB typ
kHz
deg typ
KHz
%
Msec
% typ
V max
V min
pF max
mV max
kΩ min
ppm/°C
typ
ppm/°C
max
MHz max
KΩ min
Test Conditions/Comments
Over a dynamic range of 1000 to 1, PGA=1
Over a dynamic range of 3000 to 1, PGA=1
Line frequency = 45 Hz to 65 Hz, HPF on
Phase lead 37°
Phase lag 60°
TBD Conditions
TBD Conditions
Over a dynamic range of 1000:1, PGA=1
Differential inputs: IAP-IAN, IBP-IBN, ICP-ICN, INP-INN Single
ended inputs: VAP-VN, VBP-VN, VCP-VN
Uncalibrated error, see the Terminology section
External 1.2 V reference
Sampling CLKIN/2048, 16.384 MHz/2048 = 8 kSPS
See Waveform Sampling Mode chapter
Line frequency = 45 Hz to 65 Hz, HPF on
If CF1, CF2 or CF3 frequency >6.25Hz
If CF1, CF2 or CF3 frequency <6.25Hz
For CF1, CF2 or CF3 frequency of 1Hz
1.2 V + 8%
1.2 V − 8%
Nominal 1.2 V at REF
All specifications CLKIN of 16.384 MHz
MIN
to T
IN/OUT
MAX
pin
= −40°C to +85°C.
ADE7854