米6体育平台手机版

SLASEB7D June 2017 – December 2020

PRODUCTION DATA

8.13.10.6 12-Bit ADC, Temperature Sensor and Built-In V_1/2

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)

PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNIT
V_SENSOR	Temperature sensor voltage⁽¹⁾ ⁽²⁾	ADC12ON = 1, ADC12TCMAP = 1, T_A = 0°C		700		mV
TC_SENSOR	See ⁽²⁾	ADC12ON = 1, ADC12TCMAP = 1		2.5		mV/°C
t_{SENSOR(sample)}	Sample time required if ADCTCMAP = 1 and channel (MAX – 1) is selected⁽³⁾	ADC12ON = 1, ADC12TCMAP = 1, Error of conversion result ≤1 LSB	30			µs
V_1/2	AVCC voltage divider for ADC12BATMAP = 1 on MAX input channel	ADC12ON = 1, ADC12BATMAP = 1	47.5%	50%	52.5%
I_V1/2	Current for battery monitor during sample time	ADC12ON = 1, ADC12BATMAP = 1		38	72	µA
t_{V1/2 (sample)}	Sample time required if ADC12BATMAP = 1 and channel MAX is selected⁽⁴⁾	ADC12ON = 1, ADC12BATMAP = 1	1.7			µs

(1) The temperature sensor offset can be as much as ±30°C. TI recommends a single-point calibration to minimize the offset error of the built-in temperature sensor.

(2) The device descriptor structure contains calibration values for 30°C ±3°C and 85°C ±3°C for each of the available reference voltage levels. The sensor voltage can be computed as V_SENSE = TC_SENSOR × (Temperature, °C) + V_SENSOR, where TC_SENSOR and V_SENSOR can be computed from the calibration values for higher accuracy.

(3) The typical equivalent impedance of the sensor is 250 kΩ. The sample time required includes the sensor on-time, t_SENSOR(on).

(4) The on-time t_V1/2(on) is included in the sampling time t_V1/2(sample); no additional on time is needed.

8.13.10.6 12-Bit ADC, Temperature Sensor and Built-In V1/2

8.13.10.6 12-Bit ADC, Temperature Sensor and Built-In V_1/2