ams OSRAM TCS3530 Ambient Light Sensor w/ Flicker Detection

ams OSRAM TCS3530 Ambient Light Sensors with Flicker Detection (up to 7kHz) feature true color XYZ ambient light detection. The TCS3530 light sensors come in a small footprint 8-pin optical module measuring 2.50mm x 1.80mm x 1.50mm (LxWxH). The fully embedded optical module offers an integrated aperture and diffuser. This unparalleled scale of integration, containing the photodiodes, aperture / diffuser, and precise distances between these key optical elements, allows accurate pre-calibration in the final optical device test.

The ambient light detection function provides eight concurrent ambient light sensing channels with an independent gain configuration. The channels can be arbitrarily connected to the 27x photodiodes covered with a UV/IR blocking filter. A built-in sequencer enables automated measurements without reprogramming the device after every measurement cycle. This architecture accurately measures ambient light to manage display appearance and calculates illuminance, chromaticity, and correlated color temperature (CCT).

ams OSRAM TCS3530 light sensors integrate direct detection of ambient light flickers up to 7kHz. This extended sampling range enables flicker
detection from conventional mains powered 50Hz/60Hz AC light sources or modern PDM-controlled LED lighting systems. Flicker detection is executed parallel with ambient light sensing, providing an independent gain configuration. The flicker detection engine samples and buffers data for calculating flicker frequencies externally on a host CPU.

Features

Invisible ambient light and color sensing under glass
- Configurable, high-sensitivity
  - Programmable gain and integration time
  - 8192x dynamic range by gain adjustment only
  - 1mlux minimum detectable illuminance (100ms)
- Tailored ALS and color response
  - UV/IR blocking filter for all channels
  - Clear reference channel
- ALS/color interrupt with thresholds
Unique fast ALS integration mode provides flicker-immune ambient light sensing with a programmable integration time
Integrated status checking for all functions with digital and analog ALS saturation flags

Integrated ambient light flicker detection on chip
- Independently configurable timing and gain
- Concurrent flicker and ALS measurement with simplified readout methodology
- Up to 7kHz flicker detection (14kHz sampling)
- FIFO buffer interrupt
Low power consumption and minimum I²C traffic (optional I3C mode)
- 1.8V_BUS and 1.2V_BUS operation
- Configurable sleep mode
- Interrupt-driven device
- I²C interface up to 1MHz (Fast-Mode Plus)
- On-chip data compression decreases serial bus traffic

Applications

CCT and chromaticity calculation
Auxiliary auto-white balancing

Light type identification
Flicker-immune camera operation

Specifications

1.7V to 1.98V supply voltage range
1.62V to 3.3V I/O supply voltage range
1.08V to 1.98V V_BUS I/O voltage range
4pF typical input pin capacitance
485μA typical ALS supply current

98μA typical idle current
0.7μA typical sleep current
±5 leakage current
700kHz to 740kHz oscillator clock frequency range
-30°C to +85°C operating temperature range

ams OSRAM TCS3530 Ambient Light Sensor w/ Flicker Detection

Features

Applications

Specifications

Block Diagram

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