CS5471

Features:

`Synchronous Sampling
`On-chip 1.2 V Reference (25 ppm/  typ.)
`Power Supply Configurations:
   VA+ = +3 V; VA- = -2 V; VD+ = +3 V
   Supply tolerances ±10%
`Power Consumption
   10 mW Typical at VD+ = +3 V
`Simple Four-wire Serial Interface
`Charge Pump Driver output generates negative power supply.
`Ground-Referenced Bipolar Inputs


Pinout




Specifications

Parameter	Symbol	Min	Typ	Max	Units
DC Power Supplies                         Positive Digital                                                       Positive Analog                                                       Negative Analog	VD+ VA+ VA-	-0.3 -0.3 -2.5	- -	+3.5 +3.5 -0.3	V V V
Input Current, Any Pin Except Supplies      (Note 9 and 10)	IIN	-	-	±10	mA
Output Current	IOUT	-	-	±25	mA
Power Dissipation                                          (Note 11)	PDN	-	-	500	mW
Analog Input Voltage All Analog Pins	VINA	VA- - 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
Storage Temperature	Tstg	-65	-	+150

Notes: 8. All voltages with respect to AGND.
           9. Applies to all pins including continuous over-voltage conditions at the analog input (AIN) pins.
          10. Transient current of up to 100 mA will not cause SCR latch-up. Maximum input current for a power supply 
                pin is ±50 mA.
          11. Total power dissipation, including all input currents and output currents.

WARNING: Operation at or beyond these limits may result in permanent damage to the device. Normal operation
                  is not guaranteed at these extremes.



Description

The CS5471 is a highly integrated Delta-Sigma (∆) Analog- to-Digital Converter (ADC) developed for the Power Measurement Industry. The CS5471 combines two ∆ ADCs, decimation filters, and a serial interface on a single chip. The CS5471 interfaces directly to a current transformer or shunt to measure current, and resistive divider or transformer to measure voltage. The product features a serial interface for communication with a micro- controller or DSP. The product is initialized and fully functional upon reset, and includes a Voltage Reference.