LTC6907 datasheet(3/28 Pages) LINER

3 / 28 page

LTC6995-1/LTC6995-2

699512f

For more information www.linear.com/6995

elecTrical characTerisTics The

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. Test conditions are V+ = 2.25V to 5.5V, RST = 0V for LTC6995-1,

RST = V+ for LTC6995-2, DIVCODE = 0 to 15 (NDIV = 1 to 221), RSET = 50k to 800k, RLOAD = 5k, CLOAD = 5pF unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

tOUT

Output Clock Period

1.024m

34,360

Seconds

fOUT

Output Frequency

29.1µ

977

∆fOUT

Frequency Accuracy (Note 4)

29.1µHz ≤ fOUT ≤ 977Hz

±0.8

±1.5

±2.2

∆fOUT/∆T

Frequency Drift Over Temperature

±0.005

%/°C

∆fOUT/∆V+

Frequency Drift Over Supply

V+ = 4.5V to 5.5V

V+ = 2.25V to 4.5V

0.23

0.06

0.55

0.16

%/V

Long-Term Frequency Stability

(Note 11)

ppm/√kHr

Period Jitter (Note 10)

NDIV = 1

NDIV = 8

ppmRMS

Frequency Modulation Bandwidth

0.4 • fOUT

Frequency Change Settling Time (Note 9)

Cycle

Analog Inputs

VSET

Voltage at SET Pin

0.97

1.00

1.03

∆VSET/∆T

VSET Drift Over Temperature

±75

µV/°C

RSET

Frequency-Setting Resistor

800

kΩ

VDIV

DIV Pin Voltage

V+

∆VDIV/∆V+

DIV Pin Valid Code Range (Note 5)

Deviation from Ideal

VDIV/V+ = (DIVCODE + 0.5)/16

±1.5

DIV Pin Input Current

±10

Power Supply

V+

Operating Supply Voltage Range

2.25

5.5

Power-On Reset Voltage

1.95

Supply Current

RL = ∞, RSET = 50k

V+ = 5.5V

V+ = 2.25V

135

105

170

135

µA

RL = ∞, RSET = 100k

V+ = 5.5V

V+ = 2.25V

100

130

105

µA

RL = ∞, RSET = 800k

V+ = 5.5V

V+ = 2.25V

100

µA

RL = ∞, ISET = 0µA

V+ = 5.5V

V+ = 2.25V

µA

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