STM32L152VB datasheet(98/121 Pages) STMICROELECTRONICS

Part #	STM32L152VB

Description	Ultra-low-power 32-bit MCU ARM-based Cortex-M3, 128KB Flash, 16KB SRAM, 4KB EEPROM, LCD, USB, ADC, DAC

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98 / 121 page

Electrical characteristics

STM32L151x6/8/B, STM32L152x6/8/B

98/121

Doc ID 17659 Rev 8

Figure 30.

12-bit buffered /non-buffered DAC

1.

The DAC integrates an output buffer that can be used to reduce the output impedance and to drive external loads directly

without the use of an external operational amplifier. The buffer can be bypassed by configuring the BOFFx bit in the

DAC_CR register.

6.3.18

Temperature sensor characteristics

4. Difference between measured value at Code i and the value at Code i on a line drawn between Code 0 and

last Code 4095.

5. Difference between the value measured at Code (0x800) and the ideal value = VREF+/2.

6. Difference between the value measured at Code (0x001) and the ideal value.

7.

Difference between ideal slope of the transfer function and measured slope computed from code 0x000 and

0xFFF when buffer is OFF, and from code giving 0.2 V and (VDDA – 0.2) V when buffer is ON.

8. In buffered mode, the output can overshoot above the final value for low input code (starting from min value).

R LOAD

C LOAD

Buffered/Non-buffered DAC

DAC_OUTx

Buffer(1)

12-bit

digital to

analog

converter

ai17157V2

Table 58.

Temperature sensor characteristics

Symbol

Parameter

Min

Typ

Max

Unit

TL

(1)

1.

Guaranteed by characterization, not tested in production.

VSENSE linearity with temperature

±1

±2°C

Avg_Slope(1)

Average slope

1.48

1.61

1.75

mV/°C

V110

Voltage at 110°C ±5°C(2)

2.

Measured at VDD = 3 V ±10 mV. V110 ADC conversion result is stored in the TSENSE_CAL2 byte.

612

626.8

641.5

mV

IDDA(TEMP)

(3)

Current consumption

3.4

6

µA

tSTART

(3)

3.

Guaranteed by design, not tested in production.

Startup time

10

µs

TS_temp

(4)(3)

4.

Shortest sampling time can be determined in the application by multiple iterations.

ADC sampling time when reading the

temperature

10

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