LTC2605/LTC2615/LTC2625
5
2605fa
TIMING CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating temperature
range, otherwise specifi cations 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 Program
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 + 0.1CB 300 ns
t
f
Fall Time of Both SDA and SCL Signals (Note 7)
l
20 + 0.1CB 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
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 defi ned 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 defi ned from code 256 to code 65,535.
Note 3: SDA, SCL at 0V or V
CC
, CA0, CA1 and CA2 fl oating.
Note 4: Inferred from measurement at code 256 (LTC2605/LTC2605-1),
code 64 (LTC2615/LTC2615-1) or code 16 (LTC2625/LTC2625-1) 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 2kΩ 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 2kΩ 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 specifi cations apply to LTC2605/LTC2605-1,
LTC2615/LTC2615-1 and LTC2625/LTC2625-1.
Note 10: DC Crosstalk is measured with V
CC
= 5V and V
REF
= 4096V, 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.
ELECTRICAL CHARACTERISTICS
Test Circuit 1 Test Circuit 2
V
IH(CA
n
)
/V
IL(CA
n
)
CAn
100Ω
2605 TC01
GND
R
INH
/R
INL
/R
INF
V
DD
2605 TC02
