2645L8 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'2645L8' PDF : 20 Pages View PDF
LTC2645
Electrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 2.7V to 5.5V, VOUT unloaded unless otherwise specified.
LTC2645-L12/-L10/-L8 (VFS = 2.5V)
SYMBOL PARAMETER
tPWH
INA/INB/INC/IND High Time
tPWL
INA/INB/INC/IND Low Time
tPER
INA/INB/INC/IND Rising Edge to Rising Edge
Period
t3
INA/INB/INC/IND Idle Mode Timeout
t4
INA/INB/INC/IND Rising Edge to DAC Update
Delay
fMAX
INA/INB/INC/IND Frequency
CONDITIONS
LTC2645-L12
LTC2645-L10
LTC2645-L8
LTC2645-L12
LTC2645-L10
LTC2645-L8
MIN
TYP MAX UNITS
l 25
ns
l 25
ns
l 0.160
33
ms
l 0.040
33
ms
l 0.010
33
ms
l 50
70
ms
3.2
µs
l 0.03
l 0.03
l 0.03
6.25
kHz
25
kHz
100
kHz
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All voltages with respect to GND.
Note 3: Linearity and monotonicity are defined from code 16 to code 4095
(LTC2645-12), code 4 to code 1023 (LTC2645-10) or code 1 to code 255
(LTC2645-8).
Note 4: Inferred from measurement at code 16 (LTC2645-12), code 4
(LTC2645-10) or code 1 (LTC2645-8), and at full-scale.
Note 5: This IC includes current limiting that is intended to protect the
device during momentary overload conditions. Junction temperature can
exceed the rated maximum during current limiting. Continuous operation
above the specified maximum operating junction temperature may impair
device reliability.
Note 6: INx at 0V or IOVCC.
Note 7: Guaranteed by design and not production tested.
Note 8: Internal Reference mode. DAC is stepped ¼ scale to ¾ scale and
¾ scale to ¼ scale. Load is 2kΩ in parallel with 100pF to GND.
Note 9: Temperature coefficient is calculated by dividing the maximum
change in output voltage by the specified temperature range.
2645f
6
For more information www.linear.com/LTC2645
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