SA9904APA 查看數據表（PDF） - South African Micro Electronic Systems

零件编号

产品描述 (功能)

生产厂家

SA9904APA

Three Phase Power / Energy IC with SPI Interface

South African Micro Electronic Systems 

SA9904A

sames

PIN DESCRIPTION

PIN

Designation

Description

16

6

14

17, 20, 3

18, 19, 1, 2, 4, 5

15

10, 11

GND

VDD

Analog Ground. The supply voltage to this pin should be mid-way between

VDD and VSS.

Positive Supply voltage. The voltage to this pin is typically +2.5V if a shunt

resistor is used for current sensing or in the case of a current transformer a

+5V supply can be applied.

VSS

Negative Supply Voltage. The voltage to this pin is typically -2.5V if a shunt

resistor is used for current sensing or in the case of a current transformer a

0V supply can be applied.

IVP1, IVP2,

IVP3

Analog Input for Voltage Phase 1, Phase 2 and Phase 3. The current into the

A/D converter should be set at 14µARMS at nominal mains voltage. The voltage

sense input saturates at an input current of ±25µA peak.

IIP1, IIN1, IIP2, IIN2, Inputs for current sensors. The shunt resistor voltage from each channel is

IIP3, IIN3

converted to a current of 16µARMS at rated conditions. The current sense input

saturates at an input current of ±25µA peak.

VREF

This pin provides the connection for the reference current setting resistor.

A 47kW resistor connected to sets the optimum operating condition.

OSC1, OSC2 Connections for a crystal or ceramic resonator. (OSC1 = input; OSC2 = Output)

8

SCK

Serial clock in. This pin is used to strobe data in and out of the SA9904A

9

DO

Serial data out. Data from the SA9904A is strobed out on this pin. DO is

only driven when CS is active.

7

F150

Voltage zero crossover. The F150 output generates a 1ms pulse, on every

rising edge of the mains voltage for each phase.

12

DI

Serial data in. Data is only accepted during an active chip select (CS).

13

CS

Chip select. The CS pin is active high.

IIP2 1

IIN2 2

IVP3 3

IIP3 4

IIN3 5

VDD 6

F150 7

SCK 8

DO 9

OSC1 10

20 IVP2

19 IIN1

18 IIP1

17 IVP1

16 GND

15 VREF

14 VSS

13 CS

12 DI

11 OSC2

DR-01599

Figure 2: Pin connections: Package: DIP-20, SOIC-20

ORDERING INFORMATION

Part Number

SA9904APA

SA9904ASA

Package

DIP-20

SOIC-20

http://www.sames.co.za

3/12

Share Link: