REV. PrB 08/01

PRELIMINARY TECHNICAL DATA

ADE7752

–6–

Pin No.

MNEMONIC

DESCRIPTION

19

CLKIN

Master clock for ADCs and digital signal processing. An external clock can be pro-

vided at this logic input. Alternatively, a parallel resonant AT crystal can be connected

across CLKIN and CLKOUT to provide a clock source for the ADE7752. The clock

frequency for specified operation is 10MHz. Ceramic load capacitors of between 22pF

and 33pF should be used with the gate oscillator circuit. Refer to crystal manufacturers

data sheet for load capacitance requirements

20

CLKOUT

A crystal can be connected across this pin and CLKIN as described above to provide a

clock source for the ADE7752. The CLKOUT pin can drive one CMOS load when

either an external clock is supplied at CLKIN or a crystal is being used.

21, 22

S0, S1

These logic inputs are used to select one of four possible frequencies for the digital-to-

frequency conversion. This offers the designer greater flexibility when designing the

energy meter. See Selecting a Frequency for an Energy Meter Application section.

23, 24

F2, F1

Low Frequency Logic Outputs. F1 and F2 supply average real power information. The

logic outputs can be used to directly drive electromechanical counters and two phase

stepper motors. See Transfer Function section.

PIN CONFIGURATION

SOIC Package

TOP VIEW

(Not to Scale)

ADE7752

REFIn/Out

AGND

ICN

ICP

IBN

CF

DGND

VDD

REVP

IBP

IAN

IAP

VN

VCP

VBP

VAP

RESET

S0

F2

S1

F1

SCF

CLKIN

CLKOUT

2

3

4

5

6

7

8

9

10

11

12

1

24

23

22

21

20

19

18

17

16

15

14

13