LTC2609/LTC2619/LTC2629
5
26091929fb
timing characteristics
The l denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C. (See Figure 1) (Notes 8, 9)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
= 2.7V to 5.5V
f
SCL
SCL Clock Frequency
l
0 400 kHz
t
HD(STA)
Hold Time (Repeated) Start Condition
l
0.6 µs
t
LOW
Low Period of the SCL Clock Pin
l
1.3 µs
t
HIGH
High Period of the SCL Clock Pin
l
0.6 µs
t
SU(STA)
Set-Up Time for a Repeated Start Condition
l
0.6 µs
t
HD(DAT)
Data Hold Time
l
0 0.9 µs
t
SU(DAT)
Data Set-Up Time
l
100 ns
t
r
Rise Time of Both SDA and SCL Signals (Note 7)
l
20 + 0.1C
B
300 ns
t
f
Fall Time of Both SDA and SCL Signals (Note 7)
l
20 + 0.1C
B
300 ns
t
SU(STO)
Set-Up Time for Stop Condition
l
0.6 µs
t
BUF
Bus Free Time Between a Stop and Start Condition
l
1.3 µs
t
1
Falling Edge of 9th Clock of the 3rd Input Byte to
LDAC High or Low Transition
l
400 ns
t
2
LDAC Low Pulse Width
l
20 ns
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: Linearity and monotonicity are defined from code k
L
to code
2
N
– 1, where N is the resolution and k
L
is given by k
L
= 0.016(2
N
/V
REF
),
rounded to the nearest whole code. For V
REF
= 4.096V and N = 16, k
L
=
256 and linearity is defined from code 256 to code 65,535.
Note 3: SDA, SCL at 0V or V
CC
, CA0, CA1 and CA2 floating.
Note 4: Inferred from measurement at code kL (see Note 2) and at full-Scale.
Note 5: V
CC
= 5V, V
REF
= 4.096V. DAC is stepped 1/4 scale to 3/4 scale and
3/4 scale to 1/4 scale. Load is 2k in parallel with 200pF to GND.
Note 6: V
CC
= 5V, V
REF
= 4.096V. DAC is stepped ±1LSB between half scale
and half scale – 1. Load is 2k in parallel with 200pF to GND.
Note 7: C
B
= capacitance of one bus line in pF.
Note 8: All values refer to V
IH(MIN)
and V
IL(MAX)
levels.
Note 9: These specifications apply to LTC2609/LTC2609-1,
LTC2619/LTC2619-1, LTC2629/LTC2629-1.
Note 10: DC crosstalk is measured with V
CC
= 5V, REFA = REFB = REFC
= REFD = 4.096V, with the measured DAC at mid-scale, unless otherwise
noted.
Note 11: R
L
= 2kΩ to GND or V
CC
.
Note 12: Guaranteed by design and not production tested.
