PM4104APDA Application Note:

Evaluation Module for SA4104A and SA4104B

SPEC-1771 (REV. 2)

1/14

PRELIMINARY

21-02-2006

PM4104APDA

FEATURES

n

Compatible with shunt resistor or current transformer

current sensing elements

n

Operation from either a single 5V supply or a dual 2.5V

supply

n

Connection of various current sensing elements, mains

voltage and power supply by means of screw terminals

n

On-board LED indicators for pulse output and direction

n

On-board optically isolated pulse output for direct

connection to test equipment

n

On-board precision calibration network by means of an

analog trimpot

n

Connection of stepper motor counter or impulse counter

by means of screw terminals

n

Easily accessible jumpers for setting up all possible

device options

DESCRIPTION

The PM4104APDA evaluation module is designed to

demonstrate the functionality and performance of the

SA4104A and SA4104B energy metering devices. A

complete single phase energy meter can be built up and

evaluated using this module, allowing the performance of

the SA4104A/B to be evaluated in an end user application.

The required current sensing element, a power supply as

well as a stepper motor counter or an impulse counter can

be connected by means of screw terminals.

The on-board calibration network is based on a trimpot and

allows accurate calibration of the energy meter. The various

device options can be selected by means of on-board

jumpers, while all device outputs have been equipped with

LED indicators for easy evaluation. An opto-isolated pulse

output is available for direct connection to any energy meter

test equipment.

This application note should be used in conjunction with the

datasheet for the SA4104A or SA4104B energy metering

devices.

Current

Sense

Input

Network

Voltage

Sense

Input

Network

With

Calibration

SA4104A

SA4104B

P

N

L

N

Opto-isolated

Pulse

Output

C

E

Pulse

LED

Device

Configuration

Switches

P

N

Counter Output

Power

Supply

Filter

and

GND

Generator

+

-

0

Direction LED

0

Current

Sense

Input

Network

Voltage

Sense

Input

Network

With

Calibration

SA4104A

SA4104B

P

N

L

N

Opto-isolated

Pulse

Output

C

E

Pulse

LED

Device

Configuration

Switches

P

N

Counter Output

Power

Supply

Filter

and

GND

Generator

+

-

0

Direction LED

0

Figure 1: Functional block diagram