米6体育平台手机版

ZHCS888H January 2010 – May 2021 MSP430F5418A , MSP430F5419A , MSP430F5435A , MSP430F5436A , MSP430F5437A , MSP430F5438A

PRODUCTION DATA

封装选项

机械数据 (封装 | 引脚)

ZCA|113
- MPBGAJ3A
PZ|100
- MTQF013A

散热焊盘机械数据 (封装 | 引脚)

PZ|100
- QFND428

订购信息

8.42 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		2.50	±1.5%	V
		REFVSEL = {1} for 2.0 V, REFON = REFOUT = 1, I_VREF+= 0 A	3 V		1.98	±1.5%
		REFVSEL = {0} for 1.5 V, REFON = REFOUT = 1, I_VREF+= 0 A	2.2 V, 3 V		1.49	±1.5%
AV_CC(min)	AV_CC minimum voltage, Positive built-in reference active	REFVSEL = {0} for 1.5 V		2.2			V
		REFVSEL = {1} for 2.0 V		2.3
		REFVSEL = {2} for 2.5 V		2.8
I_REF+	Operating supply current into AVCC terminal⁽²⁾ ⁽³⁾	ADC12SR = 1, REFON = 1, REFOUT = 0, REFBURST = 0	3 V		70	100	µA
		ADC12SR = 1, REFON = 1, REFOUT = 1, REFBURST = 0	3 V		0.45	0.75	mA
		ADC12SR = 0, REFON = 1, REFOUT = 0, REFBURST = 0	3 V		210	310	µA
		ADC12SR = 0, REFON = 1, REFOUT = 1, REFBURST = 0	3 V		0.95	1.7	mA
I_L(VREF+)	Load-current regulation, VREF+ terminal⁽⁴⁾	REFVSEL = {0, 1, 2} I_VREF+ = +10 µA or –1000 µA AV_CC = AV_CC_(min) for each reference level, REFVSEL = {0, 1, 2}, REFON = REFOUT = 1				2500	µV/mA
C_VREF+	Capacitance at VREF+ terminals	REFON = REFOUT = 1		20		100	pF
TC_REF+	Temperature coefficient of built-in reference⁽⁵⁾	I_VREF+ = 0 A, REFVSEL = {0, 1, 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, 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, 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, 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(max), REFVSEL = {0, 1, 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 and is 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. 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 the PCB traces or other application factors.

(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.