ams Datasheet

Page 3

[v1-00] 2017-Feb-16

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AS7220 − General Description

Block Diagram

Figure 2:

Functional Blocks of AS7220

Functional Blocks of AS7220: The AS7220 provides closed loop Chromatic White sensing and PWM tuning while

interfacing to local controls or other sensors

VDD

VDDHV

GND

MISO

SCK

MOSI

CSN_SD

SCL_M

SDA_M

SYNC / RESN

°C

AUX

0-10V

PWM_1 / 0_10V_O

DAC

LED_IND

PWM

Generator

MODE

PWM_2

PWM_3

0_10V_DIM

Dimming &

Auxiliary Mode

I

2C Master

SPI

Master

OSC

16MHz

Chromatic White

XYZ Sensors

PWM

Z

Y

X

VDD

VDD

VDD

VDD

VDD

VDDHV

VDDHV

Optional Inputs

Setup

Outputs

Cognitive Lighting

Engine (CLE)

DAY_EN

Daylighting

Enable/Disable

LDIM_MAX

Set Max LUX

Target for

0_10V_DIM pin

VDD

VDD