Datasheet

2
LTC1291
1291fa
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
Offset Error (Note 4) ● ±3.0 ±3.0 ±3.0 LSB
Linearity Error (INL) (Note 4 & 5) ● ±0.5 ±0.5 ±0.75 LSB
Gain Error (Note 4) ● ±1.0 ±2.0 ±4.0 LSB
Minimum Resolution for which No
● 12 12 12 Bits
Missing Codes are Guaranteed
Analog Input Range (Note 7) V
On Channel Leakage Current On Channel = 5V
● ±1 ±1 ±1 µA
(Note 8) Off Channel = 0V
On Channel = 0V
● ±1 ±1 ±1 µA
Off Channel = 5V
Off Channel Lekage Current On Channel = 5V
● ±1 ±1 ±1 µA
(Note 8) Off Channel = 0V
On Channel = 0V
● ±1 ±1 ±1 µA
Off Channel = 5V
WU
U
PACKAGE
/
O
RDER I FOR ATIO
A
U
G
W
A
W
U
W
ARB
S
O
LU
T
EXI T
I
S
LTC1291BCN8
LTC1291CCN8
LTC1291DCN8
ORDER PART
NUMBER
1
2
3
45
6
7
8
TOP VIEW
CLK
V
CC
(V
REF
)
CH0
D
OUT
CH1
GND
N8 PACKAGE
8-LEAD PLASTIC DIP
CS
J8 PACKAGE
8-LEAD CERAMIC DIP
D
IN
(Notes 1 and 2)
Supply Voltage (V
CC
) to GND.................................. 12V
Voltage
Analog Inputs............................ –0.3V to V
CC
+ 0.3V
Digital Inputs........................................ –0.3V to 12V
Digital Outputs .......................... –0.3V to V
CC
+ 0.3V
Power Dissipation............................................. 500mW
Operating Temperature Range
LTC1291BC, LTC1291CC,
LTC1291DC............................................ 0°C to 70°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
CO VERTER A D ULTIPLEXER CHARACTERISTICS
UU W
LTC1291C LTC1291DLTC1291B
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
f
CLK
Clock Frequency V
CC
= 5V (Note 6) (Note 9) 1.0 MHz
t
SMPL
Analog Input Sample Time See Operating Sequence 2.5 CLK Cycles
t
CONV
Conversion Time See Operating Sequence 12 CLK Cycles
t
CYC
Total Cycle Time See Operating Sequence (Note 6) 18 CLK Cycles
+ 500ns
t
dDO
Delay Time, CLK↓ to D
OUT
Data Valid See Test Circuits ● 160 300 ns
AC CHARACTERISTICS
LTC1291B/LTC1291C/LTC1291D
–0.05V to V
CC
+ 0.05V
T
JMAX
= 150°C, θ
JA
= 100°C/ W (J8)
T
JMAX
= 100°C, θ
JA
= 130°C/ W (N8)
LTC1291BCJ8
LTC1291CCJ8
LTC1291DCJ8
OBSOLETE PACKAGE
Consider N8 Package for Alternate Source
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The ● denotes the specifications
which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
The ● denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 3)