JAJSG73 データシート

JAJSG73F August 2010 – September 2019 MSP430F5324 , MSP430F5325 , MSP430F5326 , MSP430F5327 , MSP430F5328 , MSP430F5329

PRODUCTION DATA.

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）

PN|80
- MTQF010B

サーマルパッド・メカニカル・データ

発注情報

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	2.4625	2.50	2.5375	V
		REFVSEL = {1} for 2.0 V, REFON = REFOUT = 1, I_VREF+= 0 A	3 V	1.9503	1.98	2.0097
		REFVSEL = {0} for 1.5 V, REFON = REFOUT = 1, I_VREF+= 0 A	2.2 V, 3 V	1.4677	1.49	1.5124
AV_CC(min)	AVCC 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⁽⁷⁾, REFON = 1, REFOUT = 0, REFBURST = 0	3 V		70	100	µA
		ADC12SR = 1⁽⁷⁾, REFON = 1, REFOUT = 1, REFBURST = 0	3 V		0.45	0.75	mA
		ADC12SR = 0⁽⁷⁾, REFON = 1, REFOUT = 0, REFBURST = 0	3 V		210	310	µA
		ADC12SR = 0⁽⁷⁾, 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, AVCC = AVCC(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 used only as the reference for the conversion and uses the smaller buffer.

(2) The internal reference current is supplied through 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 through the AVCC terminal and is equivalent to I_REF+ with REFON =1 and REFOUT = 0.

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

(7) For devices without the ADC12, the parametrics with ADC12SR = 0 are applicable.