LTC2633ACTS8-HZ8 Просмотр технического описания (PDF) - Linear Technology
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LTC2633ACTS8-HZ8 Datasheet PDF : 24 Pages
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LTC2633
Timing Characteristics The l denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. VCC = 4.5V to 5.5V. (See Figure 1) (Note 13)
LTC2633-HI12/-HI10/-HI8/-HZ12/-HZ10/-HZ8/LTC2633A-HI12/-HZ12 (VFS = 4.096V)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
fSCL
tHD(STA)
tLOW
tHIGH
tSU(STA)
tHD(DAT)
tSU(DAT)
tr
tf
tSU(STO)
tBUF
SCL Clock Frequency
Hold Time (Repeated) Start Condition
Low Period of the SCL Clock Pin
High Period of the SCL Clock Pin
Set-Up Time for a Repeated Start Condition
Data Hold Time
Data Set-Up Time
Rise Time of Both SDA and SCL Signals
Fall Time of Both SDA and SCL Signals
Set-Up Time for Stop Condition
Bus Free Time Between a Stop and Start
Condition
(Note 12)
(Note 12)
l
0
l 0.6
l 1.3
l 0.6
l 0.6
l
0
l 100
l 20 + 0.1CB
l 20 + 0.1CB
l 0.6
l 1.3
400
kHz
µs
µs
µs
µs
0.9
µs
ns
300
ns
300
ns
µs
µs
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 are with respect to GND
Note 3. High temperatures degrade operating lifetimes. Operating lifetime
is derated at temperatures greater than 105°C.
Note 4. Linearity and monotonicity are defined from code kL to code
2N–1, where N is the resolution and kL is given by kL = 0.016 • (2N/ VFS),
rounded to the nearest whole code. For VFS = 2.5V and N = 12, kL = 26 and
linearity is defined from code 26 to code 4,095. For VFS = 4.096V and
N = 12, kL = 16 and linearity is defined from code 16 to code 4,095.
Note 5. Inferred from measurement at code 16 (LTC2633-12), code 4
(LTC2633-10) or code 1 (LTC2633-8), and at full scale.
Note 6. 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 7. Digital inputs at 0V or VCC.
Note 8. Guaranteed by design and not production tested.
Note 9. Internal reference mode. DAC is stepped 1/4 scale to 3/4 scale and
3/4 scale to 1/4 scale. Load is 2kΩ in parallel with 100pF to GND.
Note 10. Temperature coefficient is calculated by dividing the maximum
change in output voltage by the specified temperature range.
Note 11. Maximum VIH = VCC(MAX) + 0.5V
Note 12. CB = capacitance of one bus line in pF
Note 13. All values refer to VIH = VIH(MIN) and VIL = VIL(MAX) levels.
Note 14. Minimum VIL exceeds the absolute maximum rating. This
condition won’t damage the IC, but could degrade performance.
2633fb
9
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