LTC6906 datasheet(3/14 Pages) LINER

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LTC6906

6906fc

ELECTRICAL CHARACTERISTICS

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: Some frequencies may be generated using two different values of

RSET. For these frequencies, the error is specified assuming that the larger

value of RSET is used.

Note 3: Frequency accuracy is defined as the deviation from the fOUT

equation.

Note 4: Jitter is the ratio of the peak-to-peak deviation of the period to the

mean of the period. This specification is based on characterization and is

not 100% tested.

Note 5: Current into a pin is given as a positive value. Current out of a pin

is given as a negative value.

The

l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

RSET

Frequency-Setting Resistor Range

100

1000

kΩ

Δf/ΔT

Frequency Drift Over Temp (Note 3)

RSET = 316k

±0.005

%/°C

Δf/ΔV

Frequency Drift Over Supply (Note 3)

V+ = 2.25V to 3.6V, 100k ≤ RSET ≤ 1000k

0.06

%/V

Timing Jitter (Note 4)

Pin 3 = V+, 100k ≤ RSET ≤ 1000k

Pin 3 = Open, 100k ≤ RSET ≤ 1000k

Pin 3 = 0V, 100k ≤ RSET ≤ 1000k

0.03

0.07

0.15

Long-Term Stability of Output Frequency Pin 3 = V+

300

ppm/√kHr

Duty Cycle

V+

Operating Supply Range (Note 8)

2.25

3.6

Power Supply Current

RSET = 1000k, Pin 3 = 0V, RL = 10M

V+ = 3.6V

(DIV = 1, fOUT = 100kHz)

V+ = 2.25V

12.5

10.0

μA

RSET = 100k, Pin 3 = 0V, RL = 10M

V+ = 3.6V

(DIV = 1, fOUT = 1MHz)

V+ = 2.25V

100

μA

VIH

High Level DIV Input Voltage

V+ = 3.6V

V+ = 2.25V

3.1

2.05

VIL

Low Level DIV Input Voltage

V+ = 3.6V

V+ = 2.25V

0.5

0.2

IDIV

DIV Input Current (Note 5)

Pin 3 = V+

Pin 3 = 0V

–2

–1

2μA

μA

VOH

High Level Output Voltage (Note 5)

V+ = 3.6V

IOH = –100μA

IOH = –1mA

3.40

2.80

3.59

3.30

V+ = 2.25V

IOH = –100μA

IOH = –1mA

2.15

1.75

2.2

2.0

VOL

Low Level Output Voltage (Note 5)

V+ = 3.6V

IOL = 100μA

IOL = 1mA

0.02

0.15

0.2

0.8

V+ = 2.25V

IOL = 100μA

IOL = 1mA

0.03

0.30

0.1

0.5

OUT Rise Time (Note 6)

V+ = 3.6V

V+ = 2.25V

OUT Fall Time (Note 6)

V+ = 3.6V

V+ = 2.25V

VGS

GRD Pin Voltage Relative to SET Pin

Voltage

–10μA ≤ IGRD ≤ 0.3μA

–10

Note 6: Output rise and fall times are measured between the 10% and

90% power supply levels.

Note 7: The LTC6906C is guaranteed to meet specified performance from

0°C to 70°C. The LTC6906C is designed, characterized and expected to

meet specified performance from –40°C to 85°C but is not tested or QA

sampled at these temperatures. The LTC6906I is guaranteed to meet

specified performance from –40°C to 85°C.

Note 8: Consult the Applications Information section for operation with

supplies higher than 3.6V.

Note 9: Test conditions reflect the master oscillator frequency. The output

divider is functionally tested and divided frequency accuracy is guaranteed

by design.

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