Datasheet

LTC1272
3
1272fc
For more information www.linear.com/1272
CONVERTER CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. With Internal Reference (Note 4)
PARAMETER CONDITIONS
LTC1272-XA LTC1272-XC
UNITSMIN TYP MAX MIN TYP MAX
Resolution (No Missing Codes)
l
12 12 Bits
Integral Linearity Error (Note 5)
l
±1/2 ±1 LSB
Differential Linearity Error
l
±1 ±1 LSB
Offset Error
l
±3
±4
±4
±6
LSB
LSB
Gain Error ±10 ±15 LSB
Full-Scale Tempco I
OUT
(Reference) = 0
l
±5 ±25 ±10 ±45 ppm/°C
INTERNAL REFERENCE CHARACTERISTICS
The l denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
PARAMETER CONDITIONS
LTC1272-XA LTC1272-XC
UNITSMIN TYP MAX MIN TYP MAX
V
REF
Output Voltage (Note 6) I
OUT
= 0 2.400 2.420 2.440 2.400 2.420 2.440 V
V
REF
Output Tempco I
OUT
= 0
l
5 25 10 45 ppm/°C
V
REF
Line Regulation 4.75V ≤ V
DD
≤ 5.25V, I
OUT
= 0 0.01 0.01 LSB/V
V
REF
Load Regulation (Sourcing Current) 0 ≤ I
OUT
 ≤ 1mA 2 2 LSB/mA
DIGITAL AND DC ELECTRICAL CHARACTERISTICS
The l denotes the specifications which
apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
SYMBOL PARAMETER CONDITIONS
LTC1272-XA/C
UNITSMIN TYP MAX
V
IH
High Level Input Voltage CS, RD, HBEN, CLK IN V
DD
= 5.25V
l
2.4 V
V
IL
Low Level Input Voltage CS, RD, HBEN, CLK IN V
DD
= 4.75V
l
0.8 V
I
IN
Input Current CS, RD, HBEN V
IN
= 0V to V
DD
l
±10 µA
Input Current CLK IN V
IN
= 0V to V
DD
l
±20 µA
V
OH
High Level Output Voltage All Logic Outputs V
DD
= 4.75V I
OUT
= –10μA
I
OUT
= –200μA
l
4.7
4.0
V
V
V
OL
Low Level Output Voltage All Logic Outputs V
DD
= 4.75V, I
OUT
= 1.6mA
l
0.4 V
I
OZ
High-Z Output Leakage D11-D0/8 V
OUT
= 0V to V
DD
l
±10 µA
C
OZ
High-Z Output Capacitance (Note 7)
l
15 pF
I
SOURCE
Output Source Current V
OUT
= 0V –10 mA
I
SINK
Output Sink Current V
OUT
= V
DD
10 mA
I
DD
Positive Supply Current CS = RD = V
DD
, A
IN
= 5V
l
15 30 mA
P
D
Power Dissipation 75 mW