Datasheet

2
LTC1448
ABSOLUTE MAXIMUM RATINGS
W
WW
U
V
CC
to GND .............................................. –0.5V to 7.5V
Logic Inputs to GND ................................ –0.5V to 7.5V
V
OUT A
, V
OUT B
, REF to GND ........... –0.5V to V
CC
+ 0.5V
Maximum Junction Temperature .......................... 125°C
Operating Temperature Range
LTC1448C ............................................ 0°C to 70°C
LTC1448I......................................... –40°C to 85°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
WU
U
PACKAGE
/
O
RDER I FOR ATIO
ORDER PART
NUMBER
LTC1448CN8
LTC1448IN8
LTC1448CS8
LTC1448IS8
S8 PART MARKING
1448
1448I
Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS
V
CC
= 2.7V to 5.5V, V
OUT A
and V
OUT B
unloaded, REF ≤ V
CC
, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
1
2
3
4
8
7
6
5

TOP VIEW
CLK
D
IN

CS/LD
REF
V
OUT B
V
CC
GND
V
OUT A
S8 PACKAGE
8-LEAD PLASTIC SO
N8 PACKAGE
8-LEAD PDIP
T
JMAX
= 125°C, θ
JA
= 100°C/W (N8)
T
JMAX
= 125°C, θ
JA
= 150°C/W (S8)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
DAC
Resolution ● 12 Bits
Monotonicity ● 12 Bits
DNL Differential Nonlinearity V
REF
≤ V
CC
– 0.1V (Note 1) ● ±0.2 ±0.5 LSB
INL Integral Nonlinearity V
REF
≤ V
CC
– 0.1V (Note 1), T
A
= 25°C ±5.0 LSB
V
REF
≤ V
CC
– 0.1V (Note 1) ● ±5.5 LSB
V
OS
Offset Error Measured at Code 20, T
A
= 25°C ±10 mV
Measured at Code 20
● ±15 mV
V
OS
TC Offset Error Temperature ±15 µV/°C
Coefficient
V
FS
Full-Scale Voltage V
REF
= 4.096V, T
A
= 25°C 4.070 4.095 4.120 V
V
REF
= 4.096V ● 4.060 4.095 4.130 V
V
FS
TC Full-Scale Voltage 10 ppm/°C
Temperature Coefficient
Power Supply
V
CC
Positive Supply Voltage For Specified Performance ● 2.7 5.5 V
I
CC
Supply Current (Note 4) ● 450 700 µA
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
● 65 120 mA
Output Impedance to GND Input Code = 0 ● 30 120 Ω
Output Line Regulation Input Code = 4095. V
CC
= 4.5V to 5.5V, V
REF
= 4.096V ● 0.2 1.5 LSB/V