Linear Technology DC1562B Quick setup guide

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DEMO MANUAL DC1562B
Description
LTC699X-X
TimerBlox: Oscillators, One Shots,
PWM, Delay, Power on Reset
Demonstration circuit 1562B is an engineering tool to
design and evaluate the LTC699X-X family of TimerBlox
®
circuits. The center section of the board contains a pre-
configured TimerBlox function. DC1562B comes in twelve
timing function variations as outlined in Table 1.
Surrounding the center board is a playground prototyping
area. The prototyping area has pads for DIP-8, S8, MS8,
or S6 packages with bread boarding connections to each
pin and two convenient power buses and ground bus
surrounding the entire area. This area is for conditioning
signals to control the timer function and for adding loads
controlled in time.
L, LT, LTC, LTM, Linear Technology, TimerBlox and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
Using the Demo BoarD
The center part of the board can be detached as a stream-
lined circuit, to combine with a pre-existing circuit. For
application flexibility, a provision is made for buffering and
inverting the output of the timer. An optional NC7W04P6X
SC70 package dual inverter can be added at U2 to provide
this functionality.
Design files for this circuit board are available at
http://www.linear.com/demo
To understandthesimplicityand flexibility of the TimerBlox
function,downloadtheappropriatedatasheetfromtheLT C
website, www.linear.com. Each evaluation board comes
with a TimerBlox part, decoupling cap and a bulk decou-
pling 10µF tantalum cap. Resistors are also installed that
configurethe TimerBloxdevicesothattheyarereadytouse
by simply adding power. Changing the default configura-
tion of the demo board is a simple matter of determining
a few new resistor values. Simply select a pair of resistor
values for the DIV value from the data sheet DIV table,
calculate the value of RSET required, replace the resistor
on the board, apply power, and go! Single supply power
between 2.25V and 5.5V and ground must be supplied
directly to the center board.
The outer prototyping section of the board can be used
with single or dual supplies as required. When using the
prototyping area, the outermost trace, which is ground,
must be connected (hand wired) to the ground on the
center board section. All input and output holes are sized
for 65mil turret terminals, or wires can be soldered in the
holes directly.
Changing the timer configuration requires changing re-
sistor values on the center board. The resistor lead holes
can accept “pressed-in” DIP sockets, or resistors can
be soldered directly in the holes. Pads for 0805 surface
mount resistors are also included at each position where
a leaded resistor could be used. Pads are also included
for three 25-turn trim pots which can be used to replace
RSET (R8) for master oscillator frequency adjustment, PSF
in (R10) for voltage controlled options, and RDEV (R7) for
frequency divider control to permit real-time adjustments
while running.

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DEMO MANUAL DC1562B
Using the Demo BoarD
Table 1. Standard Configuration for Each Version
DEMO BOARD
NUMBER LT C PART NUMBER PART MARKING FUNCTION CONFIGURED FUNCTION
DC1562B-A LTC6990 LTDWW HF OSC 1kHz to 10kHz Voltage Controlled Oscillator
DC1562B-B LTC6991 LTDWY LF OSC 1Hz (1Sec) Fixed Frequency Oscillator
DC1562B-C LTC6992-1 LTDXB PWM 10kHz 0% to 100% Duty Cycle PWM
DC1562B-D LTC6992-2 LTDXD PWM 10kHz 5% to 95% Duty Cycle PWM
DC1562B-E LTC6992-3 LTFCQ PWM 10kHz 0% to 95% Duty Cycle PWM
DC1562B-F LTC6992-4 LTFCS PWM 10kHz 5% to 100% Duty Cycle PWM
DC1562B-G LTC6993-1 LTDXG One-Shot RET* 100ms Positive Output Pulse
DC1562B-H LTC6993-2 LTDXJ One-Shot RET* Retriggerable 100ms Positive Output Pulse
DC1562B-I LTC6993-3 LTFMH One-Shot FET** Positive 100ms Output Pulse
DC1562B-J LTC6993-4 LTFMK One-Shot FET** Retriggerable 100ms Positive Output Pulse
DC1562B-K LTC6994-1 LTFCV Delay Output Falling Edge Delayed 100ms from Input Falling Edge
DC1562B-L LTC6994-2 LTFCX Delay Output Rise/Fall Edges Delayed 100ms from Input Rise/Fall Edges
DC1562B-M LTC6995-1 LTGJN POR 1sec Power on Reset
DC1562B-N LTC6995-2 LTGJQ POR 1sec Power on Reset
* Rising Edge Triggered
** Falling Edge Triggered

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DEMO MANUAL DC1562B
Figure 1. DC1562B-X External Connection Diagram
Using the Demo BoarD

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DEMO MANUAL DC1562B
Using the Demo BoarD
Figure 2. DC1562B-X Center Board Connection Diagram

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DEMO MANUAL DC1562B
DefaUlt circUit configUrations for each Version
OUT
OE
LTC6990
RSET
95.3k
3
2
1
4
5
6
OUTPUT
ENABLE OUTPUT
VCONTROL
5V TO 8V
RVCO
432k
DC1562b F03
V+
DIV
RDIV1
1000k
RDIV2
681k
V+(5V)
0.1µF
SET
GND
OUT
MOD
LTC6992-1
RSET
316k
3
2
1
4
5
6
V+
OUTPUT
DC1562b F05
V+
DIV
RDIV1
976k
RDIV2
182k
V+(5V)
0.1µF
SET
GND
RMOD2
1.96k
RMOD3
80.6k
RMOD1
10k
VPWM
0V TO 5V
Figure 3. DC1562B-A, 1kHz to 10kHz VCO
Figure 4. DC1562B-B, 1Hz (1Sec Period) Fixed Frequency Oscillator
Figure 5. DC1562B-C, 10kHz 0% to 100% Duty Cycle PWM
OUT
RST
LTC6991
RSET
768k
3
2
1
4
5
6
RESET OUTPUT
DC1562b F04
V+
DIV
RDIV1
976k
RDIV2
182k
V+(5V)
0.1µF
SET
GND

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DEMO MANUAL DC1562B
DefaUlt circUit configUrations for each Version
OUT
MOD
LTC6992-3
RSET
316k
3
2
1
4
5
6
V+
OUTPUT
DC1562b F07
V+
DIV
RDIV1
976k
RDIV2
182k
V+(5V)
0.1µF
SET
GND
RMOD2
1.82k
RMOD3
76.8k
RMOD1
10k
VPWM
0V TO 5V
OUT
MOD
LTC6992-4
RSET
316k
3
2
1
4
5
6
V+
OUTPUT
DC1562b F08
V+
DIV
RDIV1
976k
RDIV2
182k
V+(5V)
0.1µF
SET
GND
RMOD2
1.87k
RMOD3
54.9k
RMOD1
10k
VPWM
0V TO 5V
Figure 6. DC1562B-D, 10kHz 5% to 95% Duty Cycle PWM
Figure 7. DC1562B-E, 10kHz 0% to 95% Duty Cycle PWM
Figure 8. DC1562B-F, 10kHz 5% to 100% Duty Cycle PWM
OUT
MOD
LTC6992-2
RSET
316k
3
2
1
4
5
6
V+
OUTPUT
DC1562b F06
V+
DIV
RDIV1
976k
RDIV2
182k
V+(5V)
0.1µF
SET
GND
RMOD2
1.74k
RMOD3
51.1k
RMOD1
10k
VPWM
0V TO 5V

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DEMO MANUAL DC1562B
DefaUlt circUit configUrations for each Version
OUT
TRIG
LTC6993-1
RSET
154k
3
2
1
4
5
6
TRIGGER OUTPUT
DC1562b F09
V+
DIV
RDIV1
1000k
RDIV2
523k
V+(5V)
0.1µF
SET
GND
OUT
TRIG
LTC6993-2
RSET
154k
3
2
1
4
5
6
TRIGGER OUTPUT
DC1562b F10
V+
DIV
RDIV1
1000k
RDIV2
523k
V+(5V)
0.1µF
SET
GND
OUT
TRIG
LTC6993-3
RSET
154k
3
2
1
4
5
6
TRIGGER OUTPUT
DC1562b F11
V+
DIV
RDIV1
1000k
RDIV2
523k
V+(5V)
0.1µF
SET
GND
Figure 9. DC1562B-G, Rising Edge Triggered 100ms Positive Output Pulse One-Shot
Figure 10. DC1562B-H, Rising Edge Retriggered 100ms Positive Output Pulse One-Shot
Figure 11. DC1562B-I, Falling Edge Triggered 100ms Positive Output Pulse One-Shot

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DEMO MANUAL DC1562B
OUT
TRIG
LTC6993-4
RSET
154k
3
2
1
4
5
6
TRIGGER OUTPUT
DC1562b F12
V+
DIV
RDIV1
1000k
RDIV2
523k
V+(5V)
0.1µF
SET
GND
Figure 12. DC1562B-J, Falling Edge Retriggerable 100ms Positive Output Pulse One-Shot
DefaUlt circUit configUrations for each Version
Figure 13. DC1562B-K, 100ms Delayed Output Falling Edge from Input Falling Edge
Figure 14. DC1562B-L, 100ms Delayed Output Edge from Input Edge, Both Rising and Falling Edges
OUT
IN
LTC6994-2
RSET
154k
3
2
1
4
5
6
INPUT OUTPUT
DC1562b F14
V+
DIV
RDIV1
1000k
RDIV2
523k
V+(5V)
0.1µF
SET
GND
OUT
IN
LTC6994-1
RSET
154k
3
2
1
4
5
6
INPUT OUTPUT
DC1562b F13
V+
DIV
RDIV1
523k
RDIV2
1000k
V+(5V)
0.1µF
SET
GND

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DEMO MANUAL DC1562B
DefaUlt circUit configUrations for each Version
Figure 15. DC1562B-M, 1sec Active Low Power on Reset
Figure 16. DC1562B-N, 1sec Active Low Power on Reset
OUT
RST
LTC6995-1
R6
191k 3
2
1
4
5
6
RESET OUTPUT
DC1562b F15
V+
DIV
RDIV1
1000k
RDIV2
280k
V+(5V)
0.1µF
SET
GND
R5
100k
OUT
RST
LTC6995-2
R6
191k 3
2
1
4
5
6
RESET OUTPUT
DC1562b F16
V+
V+
DIV
RDIV1
1000k
RDIV2
280k
V+(5V)
0.1µF
SET
GND
R3
100k

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DEMO MANUAL DC1562B
parts list
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
1 0 C1 (OPT.) CAP., 0805
2 1 C2 CAP., CHIP, X7R, 0.1µF, 25V, 0805 TDK, C2012X7R1H104K
3 1 C3 Cap., CHIP, X5R, 10µF, 16V, 1206 TAIYO YUDEN, EMK316BJ106KDT
4 24 E1-E16, E016-E18, E20-E24 TESTPOINT, TURRET, .064" MILL-MAX, 2308-2-00-80-00-00-07-0
5 0 R9-R11 (OPT.) RES., 0805
6 0 R7, R8, R10 (OPT.) POT., 3266W or 3266Y
7 0 U2 (OPT.) IC., NC7WZ04P6X, SC-70
8 0 OPTIONAL SOCKETS FOR
LEADED COMPONENTS
MILL MAX, 8427-0-15-01-30-02-04-0
DC1562B-A
1 1 DC1562B GENERAL BOM
2 1 R1 RES., CHIP, 1M, 1% 0805 VISHAY, CRCW08051M00FKEA
3 1 R2 RES., CHIP, 681k, 1% 0805 VISHAY, CRCW0805681KFKEA
4 1 R3 RES., CHIP, 100k, 1% 0805 VISHAY, CRCW0805100KFKEA
5 1 R4 RES., CHIP, 0Ω, 1% 0805 VISHAY, CRCW08050000Z0EA
6 0 R5 (OPEN) RES., 0805
7 1 R6 RES., CHIP, 432k, 1% 0805 VISHAY, CRCW0805432KFKEA
8 1 RSET RES., CHIP, 95.3k, 1% 0805 VISHAY, CRCW080595K3FKEA
9 1 U1 IC., TimerBlox FAMILY, SOT-23 LINEAR TECH., LTC6990CS6
DC1562B-B
1 1 DC1562B GENERAL BOM
2 1 R1 RES., CHIP, 976k, 1% 0805 VISHAY, CRCW0805976KFKEA
3 1 R2 RES., CHIP, 182k, 1% 0805 VISHAY, CRCW0805182KFKEA
4 0 R3 (OPEN) RES., 0805
5 1 R4 RES., CHIP, 0Ω, 1% 0805 VISHAY, CRCW08050000Z0EA
6 1 R5 RES., CHIP, 100k, 1% 0805 VISHAY, CRCW0805100KFKEA
7 0 R6 (OPEN) RES., 0805
8 1 RSET RES., CHIP, 768k, 1% 0805 VISHAY, CRCW0805768KFKEA
9 1 U1 IC., TimerBlox FAMILY, SOT-23 LINEAR TECH., LTC6991CS6
DC1562B-C
1 1 DC1562B GENERAL BOM
2 1 R1 RES., CHIP, 976k, 1% 0805 VISHAY, CRCW0805976KFKEA
3 1 R2 RES., CHIP, 182k, 1% 0805 VISHAY, CRCW0805182KFKEA
4 1 R3 RES., CHIP, 80.6k, 1% 0805 VISHAY, CRCW080580K6FKEA
5 1 R4 RES., CHIP, 10k, 1% 0805 VISHAY, CRCW080510K0FKEA
6 1 R5 RES., CHIP, 1.96k, 1% 0805 VISHAY, CRCW08051K96FKEA
7 0 R6 (OPEN) RES., 0805
8 1 RSET RES., CHIP, 316k, 1% 0805 VISHAY, CRCW0805316KFKEA
9 1 U1 IC., TimerBlox FAMILY SOT-23 LINEAR TECH., LTC6992CS6-1
DC1562B-D
1 1 DC1562B GENERAL BOM
2 1 R1 RES., CHIP, 976k, 1% 0805 VISHAY, CRCW0805976KFKEA
3 1 R2 RES., CHIP, 182k, 1% 0805 VISHAY, CRCW0805182KFKEA
4 1 R3 RES., CHIP, 51.1k, 1% 0805 VISHAY, CRCW080551K1FKEA
5 1 R4 RES., CHIP, 10k, 1% 0805 VISHAY, CRCW080510K0FKEA
6 1 R5 RES., CHIP, 1.74k, 1% 0805 VISHAY, CRCW08051K74FKEA
7 0 R6 (OPEN) RES., 0805
8 1 RSET RES., CHIP, 316k, 1% 0805 VISHAY, CRCW0805316KFKEA
9 1 U1 IC., TimerBlox FAMILY SOT-23 LINEAR TECH., LTC6992CS6-2