SLG47503 datasheet(120/191 Pages) DIALOG

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Datasheet

16-Jul-2021

CFR0011-120-00

Revision 2.0

120 of 191

SLG47502/03

Low Voltage GreenPAK Programmable

Mixed-Signal Matrix

Preliminary

Analog Temperature Sensor

The SLG47502/03 has an Analog Temperature Sensor (TS) with an output voltage linearly-proportional to the Centigrade tem-

perature. The TS cell shares buffer with Vref 0, so it is impossible to use both cells simultaneously, its output can be connected

directly to the GPIO or to the ACPM1_H positive input. Using buffer causes low-output impedance, linear output and makes

interfacing to readout or control circuitry especially easy. The TS is rated to operate over a -40 °C to 85 °C temperature range.

The error in the whole temperature range does not exceed ±2.5 %. TS output voltage variation over VDD at constant temperature

is less than ±1.5 %. When changing power-down source settings or enable temperature sensor settings in the Analog Tempera-

ture Sensor block, similar changes of these settings automatically occur in the Voltage Reference block. For more details refer to

section 4.

The equation below calculates the typical analog voltage passed from the TS to the ACMPs' IN+ source input. It is important to

note that there will be a chip to chip variation of about ±2 °C.

where:

VTS (mV) - TS Output Voltage

T (°C) - Temperature

Temperature hysteresis can be setup by enabling the GreenPAK's internal ACMP hysteresis.

Figure 107: Analog Temperature Sensor Structure Diagram

VTS = -1.95 x T + 734

GPIO

TS Power Up

VDD

OUT

From Connectinon

Matrix Output [95]

ACMP1H Vref

ACMP0H Vref

Reserved

Buf_sel[1526:1525]

SLG47503 Datasheet(PDF) 120 Page - Dialog Semiconductor