MSP430F5529 datasheet(73/115 Pages) TI

73 / 115 page

MSP430F551x

MSP430F552x

www.ti.com

SLAS590D – OCTOBER 2009 – REVISED APRIL 2010

REF, Built-In Reference (continued)

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

(1)

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

UNIT

REFVSEL = (0, 1, 2}

Load-current regulation,

IVREF+ = +10 µA/–1000 µA

IL(VREF+)

2500 µV/mA

VREF+ terminal

(4)

AVCC = AVCC (min) for each reference level.

REFVSEL = (0, 1, 2}, REFON = REFOUT = 1

Capacitance at VREF+/-

CVREF+/-

REFON = REFOUT = 1(5)

100

terminals

IVREF+ = 0 A

Temperature coefficient of

ppm/°

TCREF+

REFVSEL = (0, 1, 2}, REFON = 1,

built-in reference(6)

REFOUT = 0 or 1

AVCC = AVCC (min) - AVCC(max)

Power supply rejection ratio

TA = 25°C

PSRR_DC

120

300

µV/V

(DC)

REFVSEL = (0, 1, 2}, REFON = 1,

REFOUT = 0 or 1

AVCC = AVCC (min) - AVCC(max)

TA = 25°C

Power supply rejection ratio

PSRR_AC

f = 1 kHz,

ΔVpp = 100 mV

6.4

mV/V

(AC)

REFVSEL = (0, 1, 2}, REFON = 1,

REFOUT = 0 or 1

AVCC = AVCC (min) - AVCC(max)

REFVSEL = (0, 1, 2}, REFOUT = 0,

REFON = 0

→ 1

Settling time of reference

tSETTLE

µs

AVCC = AVCC (min) - AVCC(max)

voltage(7)

CVREF = CVREF(max)

REFVSEL = (0, 1, 2}, REFOUT = 1,

REFON = 0

→ 1

(4)

Contribution only due to the reference and buffer including package. This does not include resistance due to PCB trace, etc.

(5)

Two decoupling capacitors, 10µF and 100nF, should be connected to VREF to decouple the dynamic current required for an external

reference source if it is used for the ADC12_A. See also the MSP430x5xx Family User's Guide (SLAU208).

(6)

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

(7)

The condition is that the error in a conversion started after tREFON is less than ±0.5 LSB. The settling time depends on the external

capacitive load when REFOUT = 1.

Comparator B

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

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

UNIT

VCC

Supply voltage

1.8

3.6

1.8 V

CBPWRMD = 00

2.2 V

Comparator operating supply

IAVCC_COMP

current into AVCC. Excludes

3.0 V

µA

reference resistor ladder.

CBPWRMD = 01

2.2/3.0 V

CBPWRMD = 10

2.2/3.0 V

0.1

0.5

Quiescent current of local

IAVCC_REF

reference voltage amplifier into

CBREFACC = 1, CBREFLx = 01

µA

AVCC.

VIC

Common mode input range

VCC-1

CBPWRMD = 00

±20

VOFFSET

Input offset voltage

CBPWRMD = 01, 10

±10

CIN

Input capacitance

ON - switch closed

Ω

RSIN

Series input resistance

OFF - switch opened

Ω

CBPWRMD = 00, CBF = 0

450

tPD

Propagation delay, response time

CBPWRMD = 01, CBF = 0

600

CBPWRMD = 10, CBF = 0

µs

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