TSL25913FN

Part: ams TSL2591

Type: Light-to-digital converter

Description: A very-high sensitivity light-to-digital converter with dual photodiodes, a 600M:1 dynamic range, programmable analog gain and integration time, and an I2C Fast Mode compatible interface, capable of a 3.0 μA sleep state.

Operating Conditions:

• Supply voltage: 2.7–3.6 V
• Operating free-air temperature: -30 to 70 °C
• I2C clock frequency: 0–400 kHz

Absolute Maximum Ratings:

• Max supply voltage: 3.8 V
• Max output terminal current: 20 mA
• Max storage temperature: -40 to 85 °C

Key Specs:

• Supply Current (Active): 275 μA (Typ, VDD=3V, TA=25°C, no I2C activity)
• Supply Current (Sleep): 2.3 μA (Typ, VDD=3V, TA=25°C)
• I2C Clock frequency: 400 kHz (Max)
• Dynamic Range: 600M:1
• Programmable Analog Gain: 1×, 25×, 428×, 9876×
• ADC integration time step size: 101 ms (Typ, ATIME=000b)
• Dark ADC count value: 25 counts (Max, Ee=0, ATIME=100ms)
• INT, SDA output low voltage: 0.4 V (Max, 3mA sink current)

Features:

• Approximates Human Eye Response
• Dual Diode
• Programmable Analog Gain and Integration Time
• 600M:1 Dynamic Range
• Two Internal Interrupt Sources
• Programmable Upper and Lower Thresholds
• One Interrupt Includes Programmable Persistence Filter
• User Selectable Sleep Mode
• I2C Fast Mode Compatible Interface
• Data Rates up to 400 kbit/s
• Input Voltage Levels Compatible with 3.0V Bus

Applications:

• Approximates human eye response for illuminance (lux) derivation
• Suited for operation behind dark glass

Package:

• ODFN-6

Package FN Dual Flat No-Lead (Top

View): Package drawing is not to scale.

Figure TSL2591 - 4: Pin Description

Figure TSL2591 - 4: Pin Description

Figure TSL2591 - 7:

Recommended Operating Conditions

Figure TSL2591 - 8:

Operating Characteristics, V DD =3V, T A =25°C (unless otherwise noted)

All limits are guaranteed. The parameters with min and max values are guaranteed with production tests or SQC (Statistical Quality Control) methods.

Figure TSL2591 - 9:

ALS Characteristics, V DD =3V, T A =25°C, AGAIN = Max, AEN=1, (unless otherwise noted) (Notes 1, 2, 3),

1. Optical measurements are made using small-angle incident radiation from light-emitting diode optical sources. Visible white LEDs and infrared 850 nm LEDs are used for final product testing for compatibility with high-volume production
2. The white LED irradiance is supplied by a white light-emitting diode with a nominal color temperature of 4000 K.
3. The 850 nm irradiance is supplied by a GaAs light-emitting diode with the following typical characteristics: peak wavelength λ p = 850 nm and spectral halfwidth Δλ½ = 42 nm.
4. Parameter ensured by design and is not 100% tested.

Figure TSL2591 - 6:

Absolute Maximum Ratings

Figure TSL2591 - 17:

Typical Application Hardware Circuit

The I 2 C signals and the Interrupt are open-drain outputs and require pull-up resistors. The pull-up resistor (RP) value is a function of the I 2 C bus speed, the I 2 C bus voltage, and the capacitive load. The ams EVM running at 400 kbps, uses 1.5-kΩ resistors. A 10-kΩ pull-up resistor (RPI) can be used for the interrupt line.

Figure TSL2591 - 17 shows a typical hardware application circuit. A 1-μF low-ESR decoupling capacitor should be placed as close as possible to the V DD pin. V BUS in this figure refers to the I 2 C bus voltage, which is equal to V DD .

Figure TSL2591 - 19: FN Package - Dual Flat No-Lead Packaging Configuration

1. All linear dimensions are in micrometers.
2. The die is centered within the package within a tolerence of ±75 μ m.
3. Package top surface is molded with an electrically non-conductive clear plastic compound having an index of refraction of 1.55.
4. Contact finish is copper alloy A194 with pre-plated NIPdAu lead finish.
5. This package contains no lead (Pb).
6. This drawing is subject to change without notice.