Features: ·Single Chip; Power Measurement Solution
·Energy Data Linearity: ±0.1% of Reading over 1000:1 Dynamic Range
·On-Chip functions: Measures Energy and Performs Energy-to-Pulse Conversions
·Meets Accuracy Spec for IEC 687/1036
·High Pass Filter Option
·Four Input Ranges for Current Channel
·On-Chip 2.5 V Reference (25 ppm/°C typ)
·Pulse Outputs for Stepper Motor or Mechanical Counter
·On-Chip Energy Direction Indicator
·Ground Referenced Input Signals with Single Supply
·High Frequency Output for Calibration
·On-Chip Power-on Reset
·Power Supply Configurations:
VA+ = +5 V; AGND = 0 V; VD+ = +3.3 V to 5 V
Pinout
Specifications
| Channels |
Energy Pulse Outputs |
SPI Slave Interface |
Real (Active) Power |
IRMS, VRMS |
Apparent Power (S) |
Reactive Power (Q) |
Fundamental Power |
Temp Sensor |
Package |
| 2 |
|
- |
|
- |
- |
- |
- |
- |
24 SSOP |
| Note: |
|
All Power Measurement parts have Data Linearity of 0.1% over a 1000:1 Range. |
| Parameter |
Symbol |
Min |
Typ |
Max |
Unit |
DC Power Supplies (Notes 15 and 16)
Positive Digital
Positive Analog |
VD+
VA+ |
-0.3
-0.3 |
-
- |
+6.0
+6.0 |
V
V |
| Input Current, Any Pin Except Supplies (Notes 17, 18, 19) |
IIN |
- |
- |
±10 |
mA |
| Output Current, Any Pin Except VREFOUT |
IOUT |
- |
- |
100 |
mA |
| Power Dissipation (Note 20) |
PD |
- |
- |
500 |
mW |
| Analog Input Voltage All Analog Pins |
VINA |
-0.3
|
- |
(VA+) + 0.3 |
V |
| Digital Input Voltage All Digital Pins |
VIND |
-0.3
|
- |
(VD+) + 0.3 |
V |
| Ambient Operating Temperature |
TA |
-40 |
- |
85 |
°C |
| Storage Temperature |
Tstg |
-65 |
- |
100 |
°C |
Notes:15. VA+ and AGND must satisfy {(VA+) - (AGND)} + 6.0 V.
16. VD+ and AGND must satisfy {(VD+) - (AGND)} + 6.0 V.
17. Applies to all pins including continuous over-voltage conditions at the analog input pins.
18. Transient current of up to 100 mA will not cause SCR latch-up.
19. Maximum DC input current for a power supply pin is ±50 mA.
20. Total power dissipation, including all input currents and output currents.
DescriptionThe CS5466 is a low-cost power meter solution incorporating dual Delta-Sigma analog-to-digital converters, an energy-to-frequency converter and energy-pulse outputs on a single chip. The CS5466 is designed to accurately measure and calculate energy for single-phase, two- or three-wire power metering applications within minimal external components.
CS5466 low-frequency pulse outputs, E1 and E2, provide pulses at a frequency which is proportional to the active power and can be used to drive a stepper motor or mechanical counter. Energy direction output, NEG, indicates when pulse outputs E1 and E2 represent negative active power. The high-frequency pulse output FOUT is designed to assist in system calibration.
The CS5466 has configuration pins which allow for direct configuration of pulse output frequency, current-channel input range and high-pass filter enable option. It also has a power-on reset function which holds the part in reset until the supply reaches an operable level.
CS5466 Data Sheet
