LTC6907HS6 データシートの表示（PDF） - Linear Technology

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LTC6907HS6

Micropower, 40kHz to 4MHz Resistor Set Oscillator in SOT-23

Linear Technology 

FEATURES

■ Supply Current: 36µA at 400kHz

■ 1% Frequency Accuracy (from 0°C to 70°C)

■ Frequency Range: 40kHz to 4MHz

■ One Resistor Sets the Oscillator Frequency

■ –40°C to 125°C Operating Temperature Range

■ Start-Up Time Under 200µs at 4MHz

■ First Cycle After Power-Up is Accurate

■ 150Ω CMOS Output Driver

■ Low Profile (1mm) SOT-23 (ThinSOTTM) Package

U

APPLICATIO S

■ Low Cost Precision Programmable Oscillator

■ Rugged, Compact Micropower Replacement for

Crystal and Ceramic Oscillators

■ High Shock and Vibration Environments

■ Portable and Battery-Powered Equipment

■ PDAs and Cellular Phones

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

ThinSOT is a trademark of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

LTC6907

Micropower, 40kHz to 4MHz

Resistor Set Oscillator

in SOT-23

DESCRIPTIO

The LTC®6907 is a precision programmable oscillator that

is versatile, compact and easy to use. Micropower opera-

tion benefits portable and battery-powered equipment. At

400kHz, the LTC6907 consumes 36µA on a 3V supply.

A single resistor programs the oscillator frequency over a

10:1 range with better than 0.65% initial accuracy. The

output frequency can be divided by 1, 3 or 10 to span a

100:1 total frequency range, 40kHz to 4MHz.

The LTC6907 is easily programmed according to this

simple formula:

⎧10, DIV Pin = V +

ƒOUT

=

4MHz

N

•

⎛

⎝⎜

50k

RSET

⎞

⎠⎟

,

N = ⎨⎪3,

⎩⎪1,

DIV Pin = Open

DIV Pin = GND

The LTC6907 is available in the 6-lead SOT-23 (ThinSOT)

package.

Contact LTC Marketing for a version of the part with a

shutdown feature or lower frequency operation.

TYPICAL APPLICATIO

Micropower Clock Generator

3V TO 3.6V

0.1µF

÷10

÷3

÷1

LTC6907 40kHz TO 4MHz

V+ OUT

GND GRD

DIV SET

RSET

50k TO 500k

6907 TA01

Typical Supply Current vs Frequency

1000

CLOAD = 5pF

T = 25°C

3.3V, –: 1

3.3V, –: 3

3.3V, –: 10

100

10

10

100

1000

OUTPUT FREQUENCY (kHz)

10000

6907 TA02

6907fa

1

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