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STS1TX Datasheet(PDF) 21 Page - STMicroelectronics

Part # STS1TX
Description  Industrial monitoring and control
PDF  70 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STS1TX Datasheet(HTML) 21 Page - STMicroelectronics

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STS1TX
Characteristics
6.2.5
Sensors
Characteristics measured over recommended operating conditions unless otherwise
specified. All typical values are referred to TA = 25 °C, VBAT = 3.0 V.
Table 16. Analog temperature sensor characteristics
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
TERR
Error in temperature
Across the temperature range
-
±2.5
-
°C
TSLOPE Temperature coefficient
2.5
mV/
°C
VTS-OUT Output voltage level
0.92
V
TICC
Current consumption
Buffered output (low output
impedance; about 400 Ohm)
600
µA
Not buffered output (high output
impedance; about 100 k
Ω)
10
µA
Table 17. Battery indicator and low battery detector(1)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VBLT
Battery level thresholds
2.1
2.7
V
VBOT
Brownout threshold
Measured in slow battery
variation (static) conditions
(inaccurate)
1.535
V
Measured in slow battery
variation (static) conditions
(accurate)
1.684
V
BOThyst Brownout threshold hysteresis
70
mV
1. For battery powered equipment, the TX does not transmit at incorrect frequencies under low battery voltage
conditions. It either remains on channel or stops transmitting. The latter can of course be implemented by
using a lock detect and/or by switching off the PA under control of the battery monitor. For testing purposes
this control is enabled/disabled by SPI.



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