米6体育平台手机版

ZHCS896I May 2009 – September 2018 CC430F5133 , CC430F5135 , CC430F5137 , CC430F6125 , CC430F6126 , CC430F6127 , CC430F6135 , CC430F6137

PRODUCTION DATA.

封装选项

机械数据 (封装 | 引脚)

RGC|64
- MPQF125F

散热焊盘机械数据 (封装 | 引脚)

RGC|64
- QFND102O

订购信息

5.41 REF, Built-In Reference

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)⁽¹⁾

PARAMETER		TEST CONDITIONS	V_CC	MIN	TYP	MAX	UNIT
V_REF+	Positive built-in reference voltage output	REFVSEL = 2 for 2.5 V, REFON = REFOUT = 1, I_VREF+= 0 A	3 V		2.41	±1.5%	V
		REFVSEL = 1 for 2 V, REFON = REFOUT = 1, I_VREF+= 0 A	3 V		1.93	±1.5%
		REFVSEL = 0 for 1.5 V, REFON = REFOUT = 1, I_VREF+= 0 A	2.2 V, 3 V		1.45	±1.5%
AV_CC(min)	AVCC minimum voltage, Positive built-in reference active	REFVSEL = 0 for 1.5 V, reduced performance		1.8			V
		REFVSEL = 0 for 1.5 V		2.2
		REFVSEL = 1 for 2 V		2.3
		REFVSEL = 2 for 2.5 V		2.8
I_REF+	Operating supply current into AVCC terminal⁽²⁾⁽³⁾	REFON = 1, REFOUT = 0, REFBURST = 0	3 V		100	140	µA
I_REF+	Operating supply current into AVCC terminal⁽²⁾⁽³⁾	REFON = 1, REFOUT = 1, REFBURST = 0	3 V		0.9	1.5	mA
I_L(VREF+)	Load-current regulation, VREF+ terminal⁽⁴⁾	REFVSEL = 0, 1, or 2, I_VREF+ = +10 µA or –1000 µA, AV_CC = AV_CC(min) for each reference level, REFON = REFOUT = 1				2500	µV/mA
C_VREF+	Capacitance at VREF+ terminals, internal reference	REFON = REFOUT = 1		20		100	pF
TC_REF+	Temperature coefficient of built-in reference⁽⁵⁾	I_VREF+ = 0 A, REFVSEL = 0, 1, or 2, REFON = 1, REFOUT = 0 or 1			30	50	ppm/ °C
PSRR_DC	Power supply rejection ratio (DC)	AV_CC = AV_CC(min) to AV_CC(max), T_A= 25 °C, REFVSEL = 0, 1, or 2, REFON = 1, REFOUT = 0 or 1			120	300	µV/V
PSRR_AC	Power supply rejection ratio (AC)	AV_CC = AV_CC(min) to AV_CC(max) T_A= 25 °C, f = 1 kHz, ΔVpp = 100 mV, REFVSEL = 0, 1, or 2, REFON = 1, REFOUT = 0 or 1			6.4		mV/V
t_SETTLE	Settling time of reference voltage⁽⁶⁾	AV_CC = AV_CC(min) to AV_CC(max), REFVSEL = 0, 1, or 2, REFOUT = 0, REFON = 0 → 1			75		µs
t_SETTLE	Settling time of reference voltage⁽⁶⁾	AV_CC = AV_CC(min) to AV_CC(max), C_VREF = C_VREF(maximum), REFVSEL = 0, 1, or 2, REFOUT = 1, REFON = 0 → 1			75		µs

(1) The reference is supplied to the ADC by the REF module and is buffered locally inside the ADC. The ADC uses two internal buffers, one smaller and one larger for driving the VREF+ terminal. When REFOUT = 1, the reference is available at the VREF+ terminal, as well as, used as the reference for the conversion and uses the larger buffer. When REFOUT = 0, the reference is only used as the reference for the conversion and uses the smaller buffer.

(2) The internal reference current is supplied from the AVCC terminal. Consumption is independent of the ADC12ON control bit, unless a conversion is active. The REFON bit enables to settle the built-in reference before starting an analog-to-digital conversion. REFOUT = 0 represents the current contribution of the smaller buffer. REFOUT = 1 represents the current contribution of the larger buffer without external load.

(3) The temperature sensor is provided by the REF module. Its current is supplied from the AVCC terminal and is equivalent to I_REF+ with REFON = 1 and REFOUT = 0.

(4) Contribution only due to the reference and buffer including package. This does not include resistance due to PCB trace or other causes.

(5) Calculated using the box method: (MAX(–40°C to 85°C) – MIN(–40°C to 85°C)) / MIN(–40°C to 85°C)/(85°C – (–40°C)).

(6) The condition is that the error in a conversion started after t_REFON is less than ±0.5 LSB. The settling time depends on the external capacitive load when REFOUT = 1.