LTC6993CDCB-3#PBF Linear Technology, LTC6993CDCB-3#PBF Datasheet - Page 9

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LTC6993CDCB-3#PBF

Manufacturer Part Number
LTC6993CDCB-3#PBF
Description
Manufacturer
Linear Technology
Datasheet

Specifications of LTC6993CDCB-3#PBF

High Level Output Current
-16mA
Low Level Output Current
16mA
Number Of Elements
1
Operating Temperature Classification
Commercial
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (typ)
2.5/3.3/5V
Operating Temperature (min)
0C
Operating Temperature (max)
70C
Abs. Propagation Delay Time
28ns
Operating Supply Voltage (min)
2.25V
Lead Free Status / RoHS Status
Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC6993CDCB-3#PBFLTC6993CDCB-3
Manufacturer:
LT
Quantity:
10 000
TYPICAL PERFORMANCE CHARACTERISTICS
V
PIN FUNCTIONS
V
ply should be kept free from noise and ripple. It should be
bypassed directly to the GND pin with a 0.1µF capacitor.
DIV (Pin 2/Pin 4): Programmable Divider and Polarity
Input. The DIV pin voltage (V
into a 4-bit result (DIVCODE). V
a resistor divider between V
to ensure an accurate result. The DIV pin and resistors
should be shielded from the OUT pin or any other traces
that have fast edges. Limit the capacitance on the DIV pin
to less than 100pF so that V
DIVCODE (POL) determines the polarity of the OUT pins.
When POL = 0 the output produces a positive pulse. When
POL = 1 the output produces a negative pulse.
SET (Pin 3/Pin 3): Pulse Width Setting Input. The voltage
on the SET pin (V
amount of current sourced from the SET pin (I
grams the master oscillator frequency. The I
range is 1.25µA to 20µA. The output pulse will continue
indefinitely if I
+
+
= 3.3V, R
(Pin 1/Pin 5): Supply Voltage (2.25V to 5.5V). This sup-
30
25
20
15
10
5
0
2
Trigger Propagation Delay (t
vs Supply Voltage
SET
= 200k and T
3
SUPPLY VOLTAGE (V)
SET
SET
drops below approximately 500nA,
) is regulated to 1V above GND. The
4
A
= 25°C unless otherwise noted.
DIV
+
C
(DCB/S6)
LOAD
5
and GND. Use 1% resistors
DIV
settles quickly. The MSB of
PD
69931234 G28
DIV
= 5pF
) is internally converted
)
may be generated by
6
3.0
2.5
2.0
1.5
1.0
0.5
0
SET
2
Rise and Fall Time
vs Supply Voltage
SET
current
) pro-
3
SUPPLY VOLTAGE (V)
t
FALL
t
RISE
and will terminate when I
connected between SET and GND is the most accurate
way to set the pulse width. For best performance, use
a precision metal or thin film resistor of 0.5% or better
tolerance and 50ppm/°C or better temperature coefficient.
For lower accuracy applications an inexpensive 1% thick
film resistor may be used.
Limit the capacitance on the SET pin to less than 10pF
to minimize jitter and ensure stability. Capacitance less
than 100pF maintains the stability of the feedback circuit
regulating the V
4
C
5
LOAD
= 5pF
6990 G29
LTC6993-1/LTC6993-2
LTC6993-3/LTC6993-4
V
6
+
SET
R
SET
TRIG
GND
SET
voltage.
LTC6993
50
45
40
35
30
25
20
15
10
5
0
69931234 PF
2
Output Resistance vs Supply
Voltage
SET
OUT
OUTPUT SINKING CURRENT
DIV
V
+
increases again. A resistor
3
SUPPLY VOLTAGE (V)
OUTPUT SOURCING CURRENT
C1
0.1µF
V
+
4
R1
R2
5
69931234 G30
69931234f
9
6

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