Features: Energy Data Linearity: ±0.1% of Reading over 1000:1 Dynamic Range.
On-Chip Functions: (Real) Energy, I * V, IRMSand VRMS, Energy-to-Pulse Conversion
Smart "Auto-Boot" Mode from Serial EEPROM Enables Use without MCU.
AC or DC System Calibration
Mechanical Counter/Stepper Motor Driver
Meets Accuracy Spec for IEC 687/1036, JIS
Typical Power Consumption <12 Mw
Interface Optimized for Shunt Sensor
V vs. I Phase Compensation
Ground-Referenced Signals with Single Supply
On-chip 2.5 V Reference (MAX 60 ppm/°C drift)
Simple Three-Wire Digital Serial Interface
Watch Dog Timer
Power Supply Monitor
Power Supply Configurations VA+ = +5 V; VA- = 0 V; VD+ = +3.3 V to +5 V
Specifications(DGND = 0 V; See Note 17) WARNING: Operation at or beyond these limits may result in permanent damage to the device. Normal operation is not guaranteed at these extremes.
| Parameter |
Symbol |
Min |
Typ |
Max |
Unit |
DC Power Supplies (Notes 18 and 19)
Positive Digital
Positive Analog
Negative Analog |
VD+
VA+
VA- |
-0.3
-0.3
+0.3 |
-
-
- |
+6.0
+6.0
-6.0 |
V
V
V |
| Input Current, Any Pin Except Supplies(Note 20, 21, and 22) |
IIN |
- |
- |
±10 |
mA |
| Output Current |
IOUT |
- |
- |
±25 |
mA |
| Power Dissipation (Note 23) |
PD |
- |
- |
500 |
mW |
| Analog Input Voltage All Analog Pins |
VINA |
(VA-) - 0.3 |
- |
(VA+) + 0.3 |
V |
| Digital Input Voltage All Digital Pins |
VIND |
DGND - 0.3 |
- |
(VD+) + 0.3 |
V |
| Ambient Operating Temperature |
TA |
-40 |
- |
85 |
|
| Storage Temperature |
Tstg |
-65 |
- |
150 |
|
Notes: 17. All voltages with respect to ground.
18. VA+ and VA- must satisfy {(VA+) - (VA-)} +6.0 V.
19. VD+ and VA- must satisfy {(VD+) - (VA-)} +6.0 V.
20. Applies to all pins including continuous over-voltage conditions at the analog input (AIN) pins.
21. Transient current of up to 100 mA will not cause SCR latch-up.
22. Maximum DC input current for a power supply pin is ±50 mA.
23. Total power dissipation, including all input currents and output currents.DescriptionThe CS5460A is a highly integrated power measurement solution which combines two ∆ Analog-to-Digital Converters (ADCs), high speed power calculation functions, and a serial interface on a single chip. It is designed to accurately measure and calculate: Real (True) Energy, Instantaneous Power, I
RMS, and V
RMS for single phase 2- or 3-wire power metering applications. The CS5460A interfaces to a low-cost shunt resistor or transformer to measure current, and to a resistive divider or potential transformer to measure voltage. The CS5460A features a bi-directional serial interface for communication with a micro-controller and a pulse output engine for which the average pulse frequency is proportional to the real power. The CS5460A has on-chip functionality to facilitate AC or DC system-level calibration.
The "Auto-Boot" feature allows the CS5460A to function 'stand-alone' and to initialize itself on system power-up. In Auto-Boot Mode, the CS5460A reads the calibration data and start-up instructions from an external EEPROM. In this mode, the CS5460A can operate without a microcontroller, in order to lower the total bill-of-materials cost.
CS5460A Data Sheet
