ICL7109 Ver la hoja de datos (PDF) - Intersil

Número de pieza

componentes Descripción

Fabricante

ICL7109

12-Bit, Microprocessor Compatible A/D Converter

Intersil 

ICL7109

Typical Integrator Amplifier Output Waveform (INT Pin)

AUTO ZERO PHASE

(COUNTS)

6143 - 2048

INTEGRATE

PHASE FIXED

2048 COUNTS

DE-INTEGRATE PHASE

0 - 4095 COUNTS

+5V

GND

+5V

+5V

TOTAL CONVERSION TIME = 8192 x tCLOCK (IN FREE-RUN MODE)

1 V+

XTAL 40

2 OSC CONTROL XTAL 17

3 GND

EPE 39

4 RRD

CLS1 38

CLS2 37

5 - 12

RBR 1 - 8

SBS 36

PI 35

13 PE

CLR 34

14 FE

15 OE

26 - 33

TBR 1 - 8

31

16 SFD

TRE 24

DRR 18

1000pF

+5V

GND

+5V

8/

GND

1 GND

25

BUF OSC

OUT

2 STATUS

V+ 40

REF IN - 39

REF CAP- 38

REF CAP+ 37

REF IN+ 36

19 HBEN

IN HI 35

IN LO 34

COMMON 33

6/

3-8

B9 - B12, POL,OR INT 32

8/

9 - 16

B1 - B8

AZ 31

BUF 30

+5V 17 TEST

REF OUT 29

18 LBEN

V- 28

+5V

- GND

1µF

EXTERNAL

REFERENCE

1MΩ

0.01µF

+

+

INPUT

-

CINT

GND

CAZ

0.15µF

0.33µF

RINT 20kΩ 0.2V REF

200kΩ 2V REF

-5V

20 RRI

SERIAL

INPUT

DR 19

21 MODE RUN/HOLD 26

TBRL 23

20 CE/LOAD OSC SEL 24

TBRE 22

27 SEND

OSC OUT 23

OSC IN 22

25 TRO

MR 21

SERIAL

OUTPUT

IM6403

CMOS UART

GND

ICL7109

CMOS A/D CONVERTER

FOR LOWEST POWER CONSUMPTION

TBR1 - TBR8 INPUTS SHOULD HAVE 100kΩ

PULLUP RESISTORS TO +5V

+5V OR OPEN

GND

3.58MHz

CRYSTAL

FIGURE 1A. TYPICAL CONNECTION DIAGRAM UART INTERFACE-TO TRANSMIT LATEST RESULT, SEND ANY WORD TO UART

7

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