LTC6906_15 Datasheet, PDF (1/14 Pages) Linear Technology – Micropower, 10kHz to 1MHz Resistor Set Oscillator in SOT-23

LTC6906
FEATURES
Micropower, 10kHz to 1MHz
Resistor Set Oscillator
in SOT-23
DESCRIPTION
n _{Supply Current: 12μA at 100kHz}
n _{<0.65% Frequency Accuracy (from 0°C to 70°C)}
n _{Frequency Range: 10kHz to 1MHz}
n _{One Resistor Sets the Oscillator Frequency}
n _{Single Supply: 2.25V to 5.5V}
n _{–40°C to 125°C Operating Temperature Range}
n _{No Decoupling Capacitor Needed}
n _{Start-Up Time Under 200μs at 1MHz}
n _{First Cycle After Power-Up is Accurate}
n _{150Ω CMOS Output Driver}
n _{Low Profile (1mm) SOT-23 (ThinSOT™) Package}
APPLICATIONS
n _{Low Cost Precision Programmable Oscillator}
n _{Rugged, Compact Micropower Replacement for}
Crystal and Ceramic Oscillators
n _{High Shock and Vibration Environments}
n _{Portable and Battery-Powered Equipment}
n _{PDAs and Cellular Phones}
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
The LTC^®6906 is a precision programmable oscillator that
is versatile, compact and easy to use. Micropower opera-
tion benefits portable and battery-powered equipment. At
100kHz, the LTC6906 consumes 12μA on a 3.3V supply.
A single resistor programs the oscillator frequency over
a 10:1 range with better than 0.5% initial accuracy. The
output frequency can be divided by 1, 3 or 10 to span a
100:1 total frequency range, 10kHz to 1MHz.
The LTC6906 is easily programmed according to this
simple formula:
ƒ_OUT
⎧
=
1MHz
•
⎛
⎜
100k
⎞
⎟,
N
=
⎪
⎨
N _⎝R_{SET âŽ} 
⎪
⎩
10,
3,
1,
DIV Pin = V ⁺
DIV Pin = Open
DIV Pin = GND
No decoupling capacitor is needed in most cases, yield-
ing an extremely compact solution occupying less than
20mm2. Contact LTC Marketing for a version of the part
with a shutdown feature or lower frequency operation.
The LTC6906 is available in the 6-lead SOT-23 (ThinSOT)
package.
TYPICAL APPLICATION
Micropower Clock Generator
2.25V TO 3.6V
NO DECOUPLING
CAPACITOR
NEEDED
LTC6906
V⁺ OUT
10kHz TO 1MHz
10
GND GRD
3
DIV SET
1
R_SET
100k TO 1M
6906 TA01
Typical Supply Current vs Frequency
90
C_L = 5pF
80 TA = 25°C
70
V⁺ = 3.6V
60
50
V⁺ = 2.25V
40
30
20
10
0
0 200 400 600 800 1000 1200
FREQUENCY (kHz)
6906 TA01b
6906fc
1