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PDF SA9122EPA Datasheet ( Hoja de datos )

Número de pieza SA9122EPA
Descripción SINGLE PHASE UNIDIRECTIONAL POWER/ENERGY METERING IC WITH SEPERATE 64 SEGMENT LCD DRIVER
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SA9122EPA datasheet

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SA9122EPA pdf
SA9122E
PIN DESCRIPTION (Continued)
PLCC-44
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35
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40
1
12
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34
DIP-40
17
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Designation
R[0]
R[1]
R[2]
R[3]
S[0]
S[1]
S[2]
S[3]
S[4]
S[5]
S[6]
S[7]
S[8]
S[9]
S[10]
S[11]
S[12]
S[13]
S[14]
S[15]
NC
NC
NC
NC
Description
Output drivers for LCD back planes
Output drivers for LCD segments
Not connected
FUNCTIONAL DESCRIPTION
The SA9122E is a CMOS mixed signal Analog/Digital integrated circuit, which performs
power/energy calculations across a power range of 1000:1, to an overall accurancy of
better than Class 1, and includes a seperate 64 segment LCD display driver function.
The integrated circuit includes all the required functions for 1-phase power and energy
measurement such as two oversampling A/D converters for the voltage and current
sense inputs, power calculation and energy integration. Internal offsets are eliminated
through the use of cancellation procedures. The SA9122E generates pulses, the
frequency of which is proportional to the power consumption. Two frequency outputs
(FOUT1 and FOUT2) are available, with additional frequency options available on
request. The pulse rate follows the instantaneous power measured.
The separate Liquid Crystal Display driver function included on-chip, drives up to 64
segments on a 4 track muliplexed backplane display, programmable via a serial interface
having a RS232 protocol.
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SA9122EPA arduino
SA9122E
Parts List for Application Circuit: Figure 1
Item Symbol Description
1 IC-1 SA9122E
2 XTAL Crystal, 3.5795MHz
3 R1 Resistor, 1% metal
4 R2 Resistor, 1% metal
5 R3 Resistor, 390k, (230VAC) 1%, metal
6 R4 Resistor, 1M, 1/4W, 1%, metal
7 R6 Resistor, 24k, 1/4W, 1%, metal
8 R7 Resistor, 24k, 1/4W, 1%, metal
9 R8 Resistor, 820, 1/4W, 1%
10 R9 Resistor, 820, 1/4W, 1%
11 C1 Capacitor, 560pF
12 C2 Capacitor, 560pF
13 C3 Capacitor, 3.3nF
14 C4 Capacitor, 3.3nF
15 C5 Capacitor, 100nF
16 C6 Capacitor, 100nF
17 C7 Capacitor, 820nF
18 LCD LCD 64 Segment, 4 back plane
19 RSH Shunt Resistor
Detail
DIP-40/PLCC-44
Colour burst TV
Note 1
Note 1
Note 2
Note 3
Note 1: Resistor (R1 and R2) values are dependant upon the selected value of RSH.
Note 2: Capacitor (C7) to be positioned as close to Supply Pins (V & V ) of IC-1 as
DD SS
possible.
Note 3: See TYPICAL APPLICATIONS when selecting the value of RSH.
ORDERING INFORMATION
Part Number
Package
SA9122EPA
DIP-40
SA9122EFA
PLCC-44
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