Data Sheet

ams Datasheet Page 13
[v1-00] 2016-Nov-25 Document Feedback
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
2
C
LED_DRV
RST
Multi
Spectral
Sensor
U
LED_IND
V
W
I2C_ENB
INT