Datasheet

2
LTC1450/LTC1450L
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
U
U
V
CC
to GND .............................................. –0.5V to 7.5V
Logic Inputs to GND ................................ –0.5V to 7.5V
V
OUT
.............................................. –0.5V to V
CC
+ 0.5V
REFOUT, REFLO, REFHI, X1/X2 ..... –0.5V to V
CC
+ 0.5V
Maximum Junction Temperature .......................... 125°C
Operating Temperature Range
Commercial ........................................... 0°C to 70°C
Industrial ......................................... –40°C to 85°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
ORDER PART
NUMBER
Consult factory for Military grade parts.
T
JMAX
= 125°C, θ
JA
= 95°C/ W (G)
T
JMAX
= 125°C, θ
JA
= 58°C/ W (N)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
DAC
Resolution ● 12 Bits
DNL Differential Nonlinearity Guaranteed Monotonic (Note 1) ● ±0.5 LSB
INL Integral Nonlinearity T
A
= 25°C ±3.5 LSB
(Note 1) ● ±4.0 LSB
V
OS
Offset Error T
A
= 25°C ±12 mV
● ±18 mV
V
OS
TC Offset Error Temperature Coefficient ±15 µV/°C
V
FS
Full-Scale Voltage Using Internal Reference, LTC1450, T
A
= 25°C 4.065 4.095 4.125 V
Using Internal Reference, LTC1450 ● 4.045 4.095 4.145 V
External 2.048V Reference, LTC1450 ● 4.075 4.095 4.115 V
Using Internal Reference, LTC1450L, T
A
= 25°C 2.470 2.500 2.530 V
Using Internal Reference, LTC1450L ● 2.460 2.500 2.540 V
External 1.22V Reference, LTC1450L ● 2.480 2.500 2.520 V
V
FS
TC Full-Scale Voltage Temperature Coefficient Using Internal Reference, LTC1450 ±0.10 LSB/°C
Using External Reference, LTC1450/LTC1450L ±0.02 LSB/°C
Using Internal Reference, LTC1450L ±0.10 LSB/°C
Reference Output (REFOUT)
Reference Output Voltage LTC1450L ● 1.195 1.220 1.245 V
LTC1450 ● 2.008 2.048 2.088 V
Reference Output Temperature Coefficient ±0.08 LSB/°C
Reference Line Regulation ● 0.7 ±2LSB/V
Reference Load Regulation 0 ≤ I
OUT
≤ 100µA, LTC1450L ● 0.6 ± 3.0 LSB
LTC1450 ● 0.2 ±1.5 LSB
Short-Circuit Current REFOUT Shorted to GND ● 80 mA
1
2
3
4
5
6
7
8
9
10
11
12
TOP VIEW
G PACKAGE
24-LEAD PLASTIC SSOP
N PACKAGE
24-LEAD PLASTIC PDIP
24
23
22
21
20
19
18
17
16
15
14
13

WR
CSLSB
CSMSB
(LSB) D0
D1
D2
D3
D4
D5
D6
D7
D8
LDAC
CLR
X1/X2
V
OUT

V
CC

REFOUT
REFHI
REFLO
GND
D11(MSB)
D10
D9
LTC1450CG
LTC1450CN
LTC1450IG
LTC1450IN
LTC1450LCG
LTC1450LCN
LTC1450LIG
LTC1450LIN
V
CC
= 4.5V to 5.5V (LTC1450), 2.7V to 5.5V (LTC1450L), V
OUT
unloaded,
REFOUT = REFHI, REFLO = GND = X1/X2, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
ELECTRICAL CHARACTERISTICS