4
LTC1655/LTC1655L
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
V
CC
= 4.5V to 5.5V (LTC1655), V
CC
= 2.7V to 5.5V (LTC1655L); V
OUT
unloaded, REF unloaded, unless otherwise noted.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Nonlinearity is defined from code 128 to code 65535 (full scale).
See Applications Information.
Note 3: DAC switched between all 1s and all 0s. V
FS
= 4.096V.
Note 4: Digital inputs at 0V or V
CC
.
Note 5: Part is clocked with pin toggling between 1s and 0s, CS/LD is low.
Note 6: Reference can be overdriven (see Applications Information).
Note 7: Guaranteed by design. Not subject to test.
Note 8: Guaranteed by correlation for other reference and supply
conditions.
I
LEAK
Digital Input Leakage V
IN
= GND to V
CC
● ±10 µA
C
IN
Digital Input Capacitance (Note 7) 10 pF
Switching
t
1
D
IN
Valid to CLK Setup LTC1655 ● 40 ns
LTC1655L
● 60 ns
t
2
D
IN
Valid to CLK Hold LTC1655 ● 0ns
LTC1655L
● 0ns
t
3
CLK High Time LTC1655 ● 40 ns
LTC1655L
● 60 ns
t
4
CLK Low Time LTC1655 ● 40 ns
LTC1655L
● 60 ns
t
5
CS/LD Pulse Width LTC1655 ● 50 ns
LTC1655L
● 80 ns
t
6
LSB CLK to CS/LD LTC1655 ● 40 ns
LTC1655L
● 60 ns
t
7
CS/LD Low to CLK LTC1655 ● 20 ns
LTC1655L
● 30 ns
t
8
D
OUT
Output Delay LTC1655, C
LOAD
= 15pF ● 20 120 ns
LTC1655L, C
LOAD
= 15pF ● 20 300 ns
t
9
CLK Low to CS/LD Low LTC1655 ● 20 ns
LTC1655L
● 30 ns
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
