IC, TIMERBLOX, SINGLE, 5.5V, DFN6

LTC6993CDCB-3#TRMPBF

Manufacturer Part NumberLTC6993CDCB-3#TRMPBF
DescriptionIC, TIMERBLOX, SINGLE, 5.5V, DFN6
ManufacturerLinear Technology
LTC6993CDCB-3#TRMPBF datasheet
 


Specifications of LTC6993CDCB-3#TRMPBF

Operating ModeMonostableNo. Of Timers1
Clock External InputNoSupply Voltage Range2.25V To 5.5V
Digital Ic Case StyleDFNNo. Of Pins6
Operating Temperature Range0°C To +70°CRohs CompliantYes
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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FEATURES
Pulse Width Range: 1µs to 33.6 Seconds
n
Configured with 1 to 3 Resistors
n
Pulse Width Max Error:
n
– <2.3% for Pulse Width > 512µs
– <3.4% for Pulse Width of 8µs to 512µs
– <4.9% for Pulse Width of 1µs to 8µs
Four LTC6993 Options Available:
n
– Rising-Edge or Falling-Edge Trigger
– Retriggerable or Non-Retriggerable
Configurable for Positive or Negative Output Pulse
n
Fast Recovery Time
n
2.25V to 5.5V Single Supply Operation
n
70µA Supply Current at 10µs Pulse Width
n
500µs Start-Up Time
n
CMOS Output Driver Sources/Sinks 20mA
n
–40°C to 125°C Operating Temperature Range
n
Available in Low Profile (1mm) SOT-23 (ThinSOT™)
n
and 2mm × 3mm DFN
APPLICATIONS
Watchdog Timer
n
Frequency Discriminators
n
Missing Pulse Detection
n
Envelope Detection
n
High Vibration, High Acceleration Environments
n
Portable and Battery-Powered Equipment
n
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
TimerBlox and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks
are the property of their respective owners.
TYPICAL APPLICATION
Envelope Detector
MODULATED
TRIG
OUT
CARRIER
LTC6993-2
GND
V+
SET
DIV
R
SET
800k
69931234 TA01a
TimerBlox: Monostable
Pulse Generator (One Shot)
DESCRIPTION
The LTC
6993 is a monostable multivibrator (also known as
®
a “one-shot” pulse generator) with a programmable pulse
width of 1µs to 33.6 seconds. The LTC6993 is part of the
TimerBlox™ family of versatile silicon timing devices.
A single resistor, R
cillator frequency, setting the LTC6993’s time base. The
output pulse width is determined by this master oscillator
and an internal clock divider, N
settings from 1 to 2
t
=
OUT
The output pulse is initiated by a transition on the trigger
input (TRIG). Each part can be configured to generate posi-
tive or negative output pulses. The LTC6993 is available
in four versions to provide different trigger signal polarity
and retrigger capability.
DEVICE
LTC6993-1
LTC6993-2
LTC6993-3
LTC6993-4
The LTC6993 also offers the ability to dynamically adjust the
width of the output pulse via a separate control voltage.
The LTC6993 is available in the 6-lead SOT-23 (ThinSOT)
and 6-lead 2mm × 3mm DFN packages.
TRIG
SIGNAL
2V/DIV
ENVELOPE
3.3V
0.1µF
OUT
2V/DIV
LTC6993-1/LTC6993-2
LTC6993-3/LTC6993-4
, programs an internal master os-
SET
, programmable to eight
DIV
21
.
N
•R
DIV
SET
• 1µs, N
= 1, 8, 64,...,2
DIV
50kΩ
INPUT POLARITY
RETRIGGER
Rising-Edge
Rising-Edge
Falling-Edge
Falling-Edge
80kHz CARRIER
16µs
50µs/DIV
69931234 TA01b
21
No
Yes
No
Yes
69931234f
1

LTC6993CDCB-3#TRMPBF Summary of contents

  • Page 1

    ... High Vibration, High Acceleration Environments n Portable and Battery-Powered Equipment n L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and TimerBlox and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION ...

  • Page 2

    ... ORDER INFORMATION Lead Free Finish TAPE AND REEL (MINI) TAPE AND REEL LTC6993CDCB-1#TRMPBF LTC6993CDCB-1#TRPBF LTC6993IDCB-1#TRMPBF LTC6993IDCB-1#TRPBF LTC6993HDCB-1#TRMPBF LTC6993HDCB-1#TRPBF LTC6993CDCB-2#TRMPBF LTC6993CDCB-2#TRPBF LTC6993IDCB-2#TRMPBF LTC6993IDCB-2#TRPBF LTC6993HDCB-2#TRMPBF LTC6993HDCB-2#TRPBF LTC6993CDCB-3#TRMPBF LTC6993CDCB-3#TRPBF LTC6993IDCB-3#TRMPBF LTC6993IDCB-3#TRPBF LTC6993HDCB-3#TRMPBF LTC6993HDCB-3#TRPBF LTC6993CDCB-4#TRMPBF LTC6993CDCB-4#TRPBF LTC6993IDCB-4#TRMPBF LTC6993IDCB-4#TRPBF LTC6993HDCB-4#TRMPBF LTC6993HDCB-4#TRPBF LTC6993CS6-1#TRMPBF LTC6993CS6-1#TRPBF LTC6993IS6-1#TRMPBF LTC6993IS6-1#TRPBF LTC6993HS6-1#TRMPBF ...

  • Page 3

    ORDER INFORMATION Lead Free Finish TAPE AND REEL (MINI) TAPE AND REEL LTC6993CS6-2#TRMPBF LTC6993CS6-2#TRPBF LTC6993IS6-2#TRMPBF LTC6993IS6-2#TRPBF LTC6993HS6-2#TRMPBF LTC6993HS6-2#TRPBF LTC6993CS6-3#TRMPBF LTC6993CS6-3#TRPBF LTC6993IS6-3#TRMPBF LTC6993IS6-3#TRPBF LTC6993HS6-3#TRMPBF LTC6993HS6-3#TRPBF LTC6993CS6-4#TRMPBF LTC6993CS6-4#TRPBF LTC6993IS6-4#TRMPBF LTC6993IS6-4#TRPBF LTC6993HS6-4#TRMPBF LTC6993HS6-4#TRPBF TRM = 500 pieces. *Temperature grades are identified by a ...

  • Page 4

    LTC6993-1/LTC6993-2 LTC6993-3/LTC6993-4 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are 50k to 800k, R DIV SET LOAD SYMBOL PARAMETER Power Supply + V Operating Supply Voltage Range Power-On Reset Voltage ...

  • Page 5

    ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are 50k to 800k, R DIV SET LOAD SYMBOL PARAMETER t Trigger Propagation Delay PD t Minimum Recognized TRIG Pulse Width WIDTH t ...

  • Page 6

    LTC6993-1/LTC6993-2 LTC6993-3/LTC6993-4 TYPICAL PERFORMANCE CHARACTERISTICS + V = 3.3V 200k and T = 25°C unless otherwise noted. SET A t Drift vs Temperature OUT (N ≤ 64) DIV 1 50k SET 3 PARTS 1.0 0.5 0 ...

  • Page 7

    TYPICAL PERFORMANCE CHARACTERISTICS + V = 3.3V 200k and T = 25°C unless otherwise noted. SET A t Error vs R OUT SET ( Rising Edge) DIV 5 LTC6993-1/LTC6993-2 4 DIVCODE = 0 3 PARTS 3 ...

  • Page 8

    LTC6993-1/LTC6993-2 LTC6993-3/LTC6993-4 TYPICAL PERFORMANCE CHARACTERISTICS + V = 3.3V 200k and T = 25°C unless otherwise noted. SET A Typical V Distribution SET 250 2 LOTS DFN AND SOT-23 1274 UNITS 200 150 100 50 0 0.98 0.996 ...

  • Page 9

    TYPICAL PERFORMANCE CHARACTERISTICS + V = 3.3V 200k and T = 25°C unless otherwise noted. SET A Trigger Propagation Delay ( Supply Voltage 5pF LOAD ...

  • Page 10

    LTC6993-1/LTC6993-2 LTC6993-3/LTC6993-4 PIN FUNCTIONS (DCB/S6) TRIG (Pin 4/Pin 1): Trigger Input. Depending on the ver- sion, a rising or falling edge on TRIG will initiate the output pulse. LTC6993-1 and LTC6993-2 are rising-edge sensitive. LTC6993-3 and LTC6993-4 are falling-edge sensitive. ...

  • Page 11

    OPERATION The LTC6993 is built around a master oscillator with a 1µs minimum period. The oscillator is controlled by the SET pin current (I ) and voltage (V SET SET conversion factor that is accurate to ±1.7% under typical conditions. ...

  • Page 12

    LTC6993-1/LTC6993-2 LTC6993-3/LTC6993-4 OPERATION Table 1. DIVCODE Programming DIVCODE POL N DIV 512 4 0 4,096 5 0 32,768 6 0 262,144 7 0 2,097,152 8 1 2,097,152 9 1 ...

  • Page 13

    OPERATION Monostable Multivibrator (One Shot) The LTC6993 is a monostable multivibrator. A trigger signal on the TRIG input will force the output to the active (unstable) state for a programmable duration. This type of circuit is commonly referred to as ...

  • Page 14

    LTC6993-1/LTC6993-2 LTC6993-3/LTC6993-4 OPERATION Changing DIVCODE After Start-Up Following start-up, the A/D converter will continue monitoring V for changes. Changes to DIVCODE will DIV be recognized slowly, as the LTC6993 places a priority on eliminating any “wandering” in the DIVCODE. The ...

  • Page 15

    APPLICATIONS INFORMATION Basic Operation The simplest and most accurate method to program the LTC6993 is to use a single resistor, R SET and GND pins. The design procedure is a four step process. Step 1: Select the POL Bit Setting. ...

  • Page 16

    LTC6993-1/LTC6993-2 LTC6993-3/LTC6993-4 APPLICATIONS INFORMATION Since 625k is not available as a standard 1% resistor, substitute 619k if a –0.97% shift in t Otherwise, select a parallel or series pair of resistors such as 309k and 316k to attain a more ...

  • Page 17

    APPLICATIONS INFORMATION I Extremes (Master Oscillator Frequency Extremes) SET When operating with I outside of the recommended SET 1.25µA to 20µA range, the master oscillator operates outside of the 62.5kHz to 1MHz range in which it is most accurate. The ...

  • Page 18

    LTC6993-1/LTC6993-2 LTC6993-3/LTC6993-4 APPLICATIONS INFORMATION Power Supply Current The Electrical Characteristics table specifies the supply current while the part is idle (waiting to be triggered). I varies with the programmed t S(IDLE) voltage. Once triggered, the instantaneous supply current increases to ...

  • Page 19

    APPLICATIONS INFORMATION Supply Bypassing and PCB Layout Guidelines The LTC6993 is an accurate monostable multivibrator when used in the appropriate manner. The part is simple to use and by following a few rules, the expected performance is easily achieved. Adequate ...

  • Page 20

    LTC6993-1/LTC6993-2 LTC6993-3/LTC6993-4 TYPICAL APPLICATIONS TRIG OUT LTC6993-2 + GND V SET DIV R SET 402k DIVCODE = POL = 1) (N DIV Use retriggerable one shot with output inverted. Output remains low as long as retrigger occurs ...

  • Page 21

    TYPICAL APPLICATIONS RC Servo Pulse Generator Controlled Retrigger Lockout Time Interval 1.5ms PULSE GENERATOR R9 10k TRIG TRIGGER LTC6993-1 GND M1 SET 2N7002 R3 147k 20ms RETRIGGER LOCKOUT INTERVAL OUT R5 LTC6993-1 100k + 5V V 0.1µ DIV ...

  • Page 22

    LTC6993-1/LTC6993-2 LTC6993-3/LTC6993-4 TYPICAL APPLICATIONS U2 LT1009 2.5V Q1 2N2907 R6 10k PULSE IN 1µs TO 10µs INPUT PULSE WIDTH On-Time Programmable Pulsed Solenoid Driver 5 SECONDS ON D1 1N4004 TRIGGER IN OFF R4 2k TRIGGER TRIG OUT LTC6993 ...

  • Page 23

    ... JEDEC PACKAGE REFERENCE IS MO-193 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. DCB Package 6-Lead Plastic DFN (2mm × ...

  • Page 24

    ... Delay Rising Edge, Falling Edge or Both Edges www.linear.com ● TEST 2 TEST 3 TRIG OUT LTC6993-3 0.1µ GND V 0.1µF R5 SET DIV DIV 1000k R8 R4 191k 681k 69931234 TA10 TEST 2 TEST 3 = 35µA at 400kHz SUPPLY LT 1010 • PRINTED IN USA  LINEAR TECHNOLOGY CORPORA TION 2010 69931234f ...