HCPL-7870 Ver la hoja de datos (PDF) - HP => Agilent Technologies

Número de pieza

componentes Descripción

Fabricante

HCPL-7870

Isolated 15-bit A/D Converter

HP => Agilent Technologies 

isolated modulator without

additional hardware. Because the

two inputs are multiplexed, only

one conversion at a time can be

made and not all features are

available for the second channel.

The available features for both

channels are shown in the table

at right.

HCPL-x870 Digital Interface IC

Feature

Conversion Mode

Offset Calibration

Pre-Trigger Mode

Over-Range Detection

Adjustable Threshold Detection

Channel #1











Channel #2





Functional Diagrams

ISOLATION

BOUNDARY

VDD1 1

8 VDD2

VIN+ 2

VIN– 3

SIGMA-

DELTA

MOD./

ENCODE

7 MCLK

DECODE

6 MDAT

GND1 4

SHIELD

5 GND2

HCPL-7860 Isolated Modulator

CCLK 1

CLAT 2

CDAT 3

MCLK1 4

MDAT1 5

MCLK2 6

MDAT2 7

GND 8

CONFIG.

INTER-

FACE

CON-

VERSION

INTER-

FACE

CH1

16 VDD

15 CHAN

14 SCLK

13 SDAT

12 CS

THRES- 11 THR1

HOLD

CH2 DETECT 10 OVR1

&

RESET 9 RESET

HCPL-x870 Digital Interface IC

Pin Description, Isolated Modulator

Symbol

Description

VDD1

VIN+

Supply voltage input (4.5 V to 5.5 V)

Positive input (± 200 mV

recommended)

VIN– Negative input

(normally connected to GND1)

GND1 Input ground

Symbol

VDD2

MCLK

Description

Supply voltage input (4.5 V to 5.5 V)

Clock output (10 MHz typical)

MDAT Serial data output

GND2 Output ground

1-262

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