3
LTC1446/LTC1446L
The ● denotes the specifications which apply over the full operating temperature range. V
CC
= 4.5V to 5.5V (LTC1446), 2.7V to 5.5V
(LTC1446L), V
OUT A
and V
OUT B
unloaded, T
A
= T
MIN
to T
MAX,
unless otherwise noted.
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating temperature range.V
CC
= 5V (LTC1446), V
CC
= 3V (LTC1446L),
T
A
= T
MIN
to T
MAX,
unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Op Amp DC Performance
Short-Circuit Current Low V
OUT
Shorted to GND ● 55 120 mA
Short-Circuit Current High V
OUT
Shorted to V
CC
● 70 120 mA
Output Impedance to GND Input Code = 0 ● 40 160 Ω
AC Performance
Voltage Output Slew Rate (Note 3) ● 0.5 1 V/µs
Voltage Output Settling Time (Notes 3, 4) to ±0.5LSB 14 µs
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Nonlinearity is defined from the first code that is greater than or
equal to the maximum offset specification to code 4095 (full scale).
Note 3: Load is 5kΩ in parallel with 100pF.
Note 4: DAC switched between all 1s and the code corresponding to V
OS
for the part.
Note 5: Digital inputs at 0V or V
CC
.
LTC1446 LTC1446L
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Digital I/O
V
IH
Digital Input High Voltage ● 2.4 2 V
V
IL
Digital Input Low Voltage ● 0.8 0.6 V
V
OH
Digital Output High Voltage I
OUT
= –1mA ● V
CC
– 1.0 V
CC
– 0.7 V
V
OL
Digital Output Low Voltage I
OUT
= 1mA ● 0.4 0.4 V
I
LEAK
Digital Input Leakage V
IN
= GND to V
CC
● ±10 ±10 µA
C
IN
Digital Input Capacitance Guaranteed by Design ● 10 10 pF
Switching
t
1
D
IN
Valid to CLK Setup ● 40 60 ns
t
2
D
IN
Valid to CLK Hold ● 00ns
t
3
CLK High Time ● 40 60 ns
t
4
CLK Low Time ● 40 60 ns
t
5
CS/LD Pulse Width ● 50 80 ns
t
6
LSB CLK to CS/LD ● 40 60 ns
t
7
CS/LD Low to CLK ● 20 30 ns
t
8
D
OUT
Output Delay C
LOAD
= 15pF ● 150 220 ns
t
9
CLK Low to CS/LD Low ● 20 30 ns
