REV. 0

–2–

ADSST-EM-2030

PIN FUNCTION DESCRIPTION

Pin No.

Mnemonic

Description

1

DGND

Digital Ground

2DLOAD

Used to Enable Serial Download of

Program Memory

3GAIN 1

Logic Channels Output for

Multiplexer to Switch Gain for

A-Phase Current

4GAIN 2

Logic Channels Output for

Multiplexer to Switch Gain for

B-Phase Current

5

TAMP

Logic Output Indicating that One

More Current Is Reversed

6CFCalibration Frequency Logic Output.

This gives instantaneous real power

information and can be used for

calibration.

7GAIN 3

Logic Channels Output for

Multiplexer to Switch Gain for

C-Phase Current

8, 9

F1, F2

Low Frequency Logic Outputs. F1

and F2 provide average real power

information. The logic outputs can

be used to drive electromechanical

counters and 2-phase stepper motors.

10

RESET

System Reset

11

APHV

A-Phase Voltage Input

12

APHC

A-Phase Current Input

13

AVDD

Analog Positive Supply

14

AGND

Analog Ground

15

AGND

Analog Ground

16

VREF

Input for External Voltage Reference

PIN CONFIGURATION

DLOAD

GAIN 1

GAIN 2

TAMP

CF

GAIN 3

SS

MISO

MOSI

SCLK

F1

F2

XTAL2

XTAL1

RESET

AVDD

AGND

AGND

DGND

DVDD

VREF

CREF

CPHC

CPHV

BPHC

BPHV

APHC

APHV

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate

on the human body and test equipment and can discharge without detection. Although the ADSST-

EM-2030 features proprietary ESD protection circuitry, permanent damage may occur on devices

subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended

to avoid performance degradation or loss of functionality.

ORDERING GUIDE

Model

Temperature

Package

Package

Range

Description

Option

ADSST-EM-2030 –40

°C to +85°C Tiny Shrink

RU–28

Small Outline

Package

PIN FUNCTION DESCRIPTION (continued)

Pin No.

Mnemonic

Description

17

CREF

Filter Capacitor for Reference

18

BPHV

B-Phase Voltage Input

19

BPHC

B-Phase Current Input

20

CPHV

C-Phase Voltage Input

21

CPHC

C-Phase Current Input

22

SS

This Logic Signal conveys to ADSST-

EM-2030 that data transfer on SPI is

requested.

23

MISO

Data Output on SPI from

ADSST-EM-2030

24

MOSI

25

SCLK

Clock for SPI. This clock is generated

by an external microcontroller when

the data transfer to or from ADSST-

EM-2030 takes place.

26

XTAL1

Crystal Oscillator

27

XTAL2

Crystal Oscillator

28

DVDD

Digital Positive Supply