Linear Technology DC1562B Kurzanleitung zur Einrichtung

dc1562bfa

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.

dc1562bfa

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

dc1562bfa

DEMO MANUAL DC1562B

Figure 1. DC1562B-X External Connection Diagram

Using the Demo BoarD

dc1562bfa

DEMO MANUAL DC1562B

Using the Demo BoarD

Figure 2. DC1562B-X Center Board Connection Diagram

dc1562bfa

DEMO MANUAL DC1562B

DefaUlt circUit configUrations for each Version

OUT

LTC6990

RSET

95.3k

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

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

RESET OUTPUT

DC1562b F04

V+

DIV

RDIV1

976k

RDIV2

182k

V+(5V)

0.1µF

SET

GND

dc1562bfa

DEMO MANUAL DC1562B

DefaUlt circUit configUrations for each Version

OUT

MOD

LTC6992-3

RSET

316k

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

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

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

dc1562bfa

DEMO MANUAL DC1562B

DefaUlt circUit configUrations for each Version

OUT

TRIG

LTC6993-1

RSET

154k

TRIGGER OUTPUT

DC1562b F09

V+

DIV

RDIV1

1000k

RDIV2

523k

V+(5V)

0.1µF

SET

GND

OUT

TRIG

LTC6993-2

RSET

154k

TRIGGER OUTPUT

DC1562b F10

V+

DIV

RDIV1

1000k

RDIV2

523k

V+(5V)

0.1µF

SET

GND

OUT

TRIG

LTC6993-3

RSET

154k

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

dc1562bfa

DEMO MANUAL DC1562B

OUT

TRIG

LTC6993-4

RSET

154k

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

LTC6994-2

RSET

154k

INPUT OUTPUT

DC1562b F14

V+

DIV

RDIV1

1000k

RDIV2

523k

V+(5V)

0.1µF

SET

GND

OUT

LTC6994-1

RSET

154k

INPUT OUTPUT

DC1562b F13

V+

DIV

RDIV1

523k

RDIV2

1000k

V+(5V)

0.1µF

SET

GND

dc1562bfa

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

191k 3

RESET OUTPUT

DC1562b F15

V+

DIV

RDIV1

1000k

RDIV2

280k

V+(5V)

0.1µF

SET

GND

100k

OUT

RST

LTC6995-2

191k 3

RESET OUTPUT

DC1562b F16

V+

DIV

RDIV1

1000k

RDIV2

280k

V+(5V)

0.1µF

SET

GND

100k

dc1562bfa

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

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