AS7263 datasheet(13/45 Pages) AMSCO

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ams Datasheet

Page 13

[v1-00] 2016-Nov-25

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AS7263 − Detailed Description

Figure 14:

Internal Block Diagram

6-Channel NIR Spectral_ID Detector

The AS7263 6-channel Spectral_ID is a next-generation digital

spectral sensor device. Each channel has a Gaussian filter

characteristic with a full width half maximum (FWHM)

bandwidth of 20nm. The channels are spaced roughly at 50nm

intervals in the NIR spectrum: R, S, T, U, V, W. The sensor contains

analog-to-digital converters (16-bit resolution ADC), which

integrate the current from each channel’s photodiode. Upon

completion of the conversion cycle, the integrated result is

transferred to the corresponding data registers. The transfers

are double-buffered to ensure that the integrity of the data is

maintained.

Interference filters enable high temperature stability and

eliminate lifetime drift. Filter accuracy will be affected by the

angle of incidence, and require 0° angle of incidence ±20.0° for

specified accuracy. Angles of light beyond this will shift the

spectral response of the filters. The LGA package aperture

assists in the control of the light input, helping to maintain the

proper angle of incidence at the sensors.

Detailed Description

RC Osc

Spectral_ID

Engine

VDD1

VDD2

GND

16MHz

MISO

SCK

MOSI

CSN_SD

SYNC / RESN

°C

SPI

Master

TX / SDA_S

RX / SCL_S

UART / I

LED_DRV

RS T

Multi

Spectral

Sensor

LED_IND

V W

I2C_ENB

INT

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