DC814 QUICK START QUIDE
DESCRIPTION
Demonstration circuit DC814 is for the evaluation of Linear Tech-
nology' s resistor set oscillator ICs in a SO T-23 package. The
DC814 is available in three sets of independent PCB assemblies:
A Buffer Board (DC814A-X) and
Tw o D I P-8 Clock Boards (DC814B-X) and (DC814C-X).
The buffer board contains a DIP-8 clock board mounted on a
DIP-8 socket and a multi-turn potentiometer for adj usting the
frequency of the DIP-8 clock. The output of the DIP-8 clock is
buffered by a high speed driver (the buffer' s maximum output
current is ±100mA). The output of the buffer is connected thru a
50 ohm resistor to a BN C connector for driving oscilloscope
probes and 50 ohm coaxial cables.
Table 1. Buffer Board Part Num bers
Buffer Board
DC814A-A
DC814A-B
DC814A-C
DC814A-D
DC814A-E
DC814A-F
DC814A-G
DC814A-H
DC814A-I
A buffer board can easily be set up for evaluation using one
pow er supply, an oscilloscope and a frequency counter (see fig-
ure 4). A DIP-8 clock board can be removed from the buffer
board and used independently as a clock source to a digital pro-
totype system. The DIP-8 clock board has surface mount pads
for installing an 0603 size resistor (R S1 on clock board) w hen it
is used independently of the clock buffer board.
Clock I C
LTC6905
LTC1799
LTC6900
LTC6905-133
LTC6905-100
LTC6905-96
LTC6905-80
LTC6906
LTC6907
DEMO CIRCUIT DC814
QUICK START GUIDE
RESISTOR SET OSCILLATORS IN SOT-23:
LTC6905, LTC1799, LTC6900, LTC6905-XXX,
The DIP-8 clock boards for the LTC6905-XXX series do not re-
quire an R SET resistor and can be used as fixed frequency
clocks. The size of the DIP-8 clock board is equivalent to the
"half-size" canned crystal oscillators (13mmx13mm).
The DIP-8 clock boards can be ordered independently of a buffer
board and have the follow ing part numbers:
Table 2. D I P-8 Clock Board Part N umbers
DI P-8 Clock Board
DC814B-A
DC814B-B
DC814B-C
DC814B-D
DC814B-E
DC814B-F
DC814B-G
DC814C-H
DC814C-I
Desi gn fi les for t hese ci rcui t boards are avai lable. Call
t he LTC fact ory.
, LTC and LT are registered trademarks of Linear Technology Corporation. ThinSOT
and Pow erPath are trademarks of Linear Technology Corporation.
LTC6906, LTC6907
Clock I C
LTC6905
LTC1799
LTC6900
LTC6905-133
LTC6905-100
LTC6905-96
LTC6905-80
LTC6906
LTC6907
1
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