3
LTC1446/LTC1446L
The q denotes the specifications which apply over the full operating temperature range. VCC = 4.5V to 5.5V (LTC1446), 2.7V to 5.5V
(LTC1446L), VOUT A and VOUT B unloaded, TA = TMIN to TMAX, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
The q denotes the specifications which apply over the full operating temperature range.VCC = 5V (LTC1446), VCC = 3V (LTC1446L),
TA = TMIN to TMAX, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Op Amp DC Performance
Short-Circuit Current Low
VOUT Shorted to GND
q
55
120
mA
Short-Circuit Current High
VOUT Shorted to VCC
q
70
120
mA
Output Impedance to GND
Input Code = 0
q
40
160
AC Performance
Voltage Output Slew Rate
(Note 3)
q
0.5
1
V/
s
Voltage Output Settling Time
(Notes 3, 4) to
±0.5LSB
14
s
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 5k
in parallel with 100pF.
Note 4: DAC switched between all 1s and the code corresponding to VOS
for the part.
Note 5: Digital inputs at 0V or VCC.
LTC1446
LTC1446L
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
Digital I/O
VIH
Digital Input High Voltage
q
2.4
2
V
VIL
Digital Input Low Voltage
q
0.8
0.6
V
VOH
Digital Output High Voltage
IOUT = – 1mA
q
VCC – 1.0
VCC – 0.7
V
VOL
Digital Output Low Voltage
IOUT = 1mA
q
0.4
V
ILEAK
Digital Input Leakage
VIN = GND to VCC
q
±10
A
CIN
Digital Input Capacitance
Guaranteed by Design
q
10
pF
Switching
t1
DIN Valid to CLK Setup
q
40
60
ns
t2
DIN Valid to CLK Hold
q
00
ns
t3
CLK High Time
q
40
60
ns
t4
CLK Low Time
q
40
60
ns
t5
CS/LD Pulse Width
q
50
80
ns
t6
LSB CLK to CS/LD
q
40
60
ns
t7
CS/LD Low to CLK
q
20
30
ns
t8
DOUT Output Delay
CLOAD = 15pF
q
150
220
ns
t9
CLK Low to CS/LD Low
q
20
30
ns