©2006 Semtech Corp.

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POWER MANAGEMENT

5

SH3003

POWER MANAGEMENT

Parameter

Symbol

Min

Typ

Max

Units

V

BO(PUP)

2.3

V

BO(MIN)

V

BO(MIN)

2.27

2.3

2.33

V

V

BO(MAX)

4.2

4.3

4.4

V

V

RES

33

mV

V

HYS

50

mV

Td

2.5

μs

TDAC

4

ms

V

DD(MIN)

1V

Parameter

Symbol

Min

Typ

Max

Units

Minimum operating freq. (start-up default = 16MHz)

F

MIN

5.6

8

MHz

Maximum operating frequency

F

MAX

16.8

21

MHz

Frequency resolution

F

RES

-0.3

2

kHz

Programmed frequency accuracy at 25°C

F

ST

+0.3

%

Frequency drift over temperature and supply

F

DRIFT

±0.5

%

CLKOUT cycle-to-cycle jitter (spread spectrum off)

J

0.1

%

Start-up time from standby

T

START

2

μs

Settling time to 0.1% after HF digitally-controlled

oscillator (DCO) code change

T

SETT

10

μs

DC

40

60

%

Frequency temperature stability

F

TS

100

ppm/°C

Short-term frequency stability

F

S

0.5

%/sec

Minimum spread spectrum range*

SS(

32

kHz

Maximum spread spectrum range*

SS(

256

kHz

CLKOUT rise/fall time (20pF load)

T

RF

3ns

CLKOUT logic output low (4mA load)

V

OL

0.25

0.4

V

CLKOUT logic output high (4mA load)

V

OH

-0.4

-0.25

Ref VDD

High-Frequency Oscillator (HFO)

*

Note: After power-up, spectrum spreading of the high-frequency oscillator is disabled.

Programmable Reset