LTC1448 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1448' PDF : 12 Pages View PDF
LTC1448
ELECTRICAL CHARACTERISTICS
VCC = 2.7V to 5.5V, VOUT A and VOUT B unloaded, REF ≤ VCC, TA = TMIN to TMAX, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
AC Performance
Voltage Output Slew Rate
Voltage Output Settling Time (Notes 2, 3) to ± 0.5LSB
Digital Feedthrough
Reference Input
RIN
REF Input Resistance
REF
REF Input Range
(Notes 5, 6)
Digital I/O
VIH
Digital Input High Voltage
VIL
Digital Input Low Voltage
ILEAK
Digital Input Leakage
CIN
Digital Input Capacitance
Switching (VCC = 4.5V to 5.5V)
t1
DIN Valid to CLK Setup
t2
DIN Valid to CLK Hold
t3
CLK High Time
t4
CLK Low Time
t5
CS/LD Pulse Width
t6
LSB CLK to CS/LD
t7
CS/LD Low to CLK
t8
CLK Low to CS/LD Low
Switching (VCC = 2.7V to 5.5V)
t1
DIN Valid to CLK Setup
t2
DIN Valid to CLK Hold
t3
CLK High Time
t4
CLK Low Time
t5
CS/LD Pulse Width
t6
LSB CLK to CS/LD
t7
CS/LD Low to CLK
t8
CLK Low to CS/LD Low
VCC = 5V
VCC = 3V
VCC = 5V
VCC = 3V
VIN = GND to VCC
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
The q denotes specifications which apply over the full operating
temperature range.
Note 1: Nonlinearity is defined from code 20 to code 4095 (full scale).
See Applications Information.
Note 2: Load is 5k in parallel with 100pF.
Note 3: DAC switched between all 1s and the code corresponding to VOS
for the part.
MIN TYP MAX
UNITS
q
0.5
1.0
14
0.3
V/µs
µs
nV • s
q
7.5 12.5
18
kΩ
q
0
VCC
V
q
2.4
q
2.0
q
q
q
q
V
V
0.8
V
0.6
V
± 10
µA
10
pF
q
40
ns
q
0
ns
q
40
ns
q
40
ns
q
50
ns
q
40
ns
q
20
ns
q
20
ns
q
60
ns
q
0
ns
q
60
ns
q
60
ns
q
80
ns
q
60
ns
q
30
ns
q
30
ns
Note 4: Digital inputs at 0V or VCC.
Note 5: VOUT can only swing from (GND + VOS) to (VCC – VOS) when
output is unloaded.
Note 6. Guaranteed by design, not subject to test.
3
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