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Introduction, characteristics, and applications of Osram TCS3530 ambient light sensor with flicker detection

2/12/2024 9:00:00 AM

Summary: Features true color XYZ ambient light detection and flicker detection up to 7kHz.

TCS3530 ambient light sensor Osram

Osram TCS3530 ambient light sensor has flicker detection (up to 7kHz) function and has true color XYZ ambient light detection function. The TCS3530 light sensor uses a small footprint 8-pin optical module with dimensions of 2.50mm x 1.80mm x 1.50mm (LxWxH). Fully embedded optical modules provide an integrated aperture and diffuser. This unparalleled scale of integration, including photodiodes, apertures/diffusers, and the precise distances between these critical optical elements allows for accurate pre-calibration during final optic testing.

The ambient light detection feature provides eight concurrent ambient light sensing channels with independent gain configurations. Channels can be optionally connected to 27x photodiodes covered with UV/IR blocking filters. The built-in sequencer enables automated measurements without the need to reprogram the device after each measurement cycle. The architecture accurately measures ambient light to manage display appearance and calculates illuminance, colorimetric and correlated color temperature (CCT).

The OSRAM TCS3530 light sensor integrates direct detection of ambient light flicker up to 7kHz. This extended sampling range makes it possible to
detect flicker from conventional mains powered 50Hz/60Hz AC light sources or modern PDM controlled LED lighting systems. Flicker detection is performed in parallel with ambient light sensing, providing independent gain configuration. The flicker detection engine collects and buffers flicker frequency calculation data outside the host CPU.


characteristic

  • Invisible ambient light and color sensing under glass

    • UV/IR blocking filters for all channels

    • clear reference channel

    • Programmable gain and integration time

    • 8192x dynamic range is adjusted by gain only

    • Minimum detectable illumination (100ms)

    • Configurable, high sensitivity

    • Tailored ALS and color response

    • ALS/Color Interrupts and Thresholds

  • Unique fast ALS integration mode provides flicker-immune ambient light sensing with programmable integration time

  • Integrated status check for all functions with digital and analog ALS saturation flags

  • Integrated ambient light flicker detection chip

    • Independently configurable timing and gain

    • Simultaneous flicker and ALS measurement with simplified readout method

    • Up to 7kHz flicker detection (14kHz sampling)

    • FIFO buffer interrupt

  • Low power consumption, minimal I(2)C traffic (optional I3C mode)

    • 1.8V(BUS) and 1.2V(BUS) operation

    • Configurable sleep mode

    • interrupt driver

    • I²C interface up to 1MHz (Fast-Mode Plus)

    • On-chip data compression reduces serial bus traffic


app

  • CCT and colorimetric calculations

  • Assisted automatic white balance

  • Light identification

  • Flash immune camera operation


specification

  • 1.7V to 1.98V supply voltage range

  • 1.62V to 3.3VI/O supply voltage range

  • 1.08V to 1.98VV(BUS) I/O voltage range

  • 4pF typical input pin capacitance

  • 485µA typical ALS supply current

  • 98µ typical idle current

  • 0.7μA typical sleep current

  • ±5 leakage current

  • 700kHz to 740kHz oscillator clock frequency range

  • -30℃~ +85℃ operating temperature range

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