AS1163 datasheet(24/91 Pages) AMSOSRAM

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AS1163

Functional description

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DS001075 • v2-00 • 2025-Nov-21

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6.3.5

DEEPSLEEP state

The device enters in power save sleep mode after GODEEPSLEEP and waits for activating via

GOSLEEP, GOACTIVE or RESET.

Only communication is supported. Diagnostic not possible. Temperature measurement not

possible.

Transition to ACTIVE mode is supported via GOACTIVE command, provided fault flags are

clear.

6.4

ADC

The ADC is meant for measuring the difference between VDD and the LED driver outputs, also

referred to as Vf of the LED.

User can utilize the ADC readings for:

•

Power rail optimization

•

LED aging estimation

•

General purpose measurement request (selected LED driver can be turned OFF by setting

PWM to 0). As the Vf, this measurement is referred to VDD.

The main features are:

•

Sampling window < 2µs

•

Fresh measurement at each driver < 18 ms

•

Resolution: 10-bit

•

Typical Input range from VDD to VDD – 3.574 V (Vforward measurement)

•

Analog multiplexer for measuring the LED Vforward at all driver outputs.

•

Synchronous measurement triggered with PWM rising-edge, to capture the Vds while the

driver is turned on.

•

Asynchronous measurement possible with dedicated bit set in measurement request

command.

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