Datasheet

2
LTC1285/LTC1288
(Notes 1 and 2)
Power Dissipation.............................................. 500mW
Operating Temperature Range .................... 0°C to 70°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec.)................ 300°C
PART MARKING
T
JMAX
= 150°C, θ
JA
= 130°C/W
Consult factory for Industrial and Military grade parts.
ORDER PART
NUMBER
LTC1285CN8
ORDER PART
NUMBER
LTC1285CS8
1285C
PART MARKING
ORDER PART
NUMBER
LTC1288CN8
ORDER PART
NUMBER
LTC1288CS8
1288C
T
JMAX
= 150°C, θ
JA
= 130°C/W
T
JMAX
= 150°C, θ
JA
= 175°C/W
T
JMAX
= 150°C, θ
JA
= 175°C/W
PACKAGE/ORDER INFORMATION
W
UU
Supply Voltage (V
CC
) to GND................................... 12V
Voltage
Analog and Reference ................ –0.3V to V
CC
+ 0.3V
Digital Inputs.........................................–0.3V to 12V
Digital Output ............................. –0.3V to V
CC
+ 0.3V
ABSOLUTE MAXIMUM RATINGS
W
WW
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Supply Voltage (Note 3) LTC1285 2.7 6 V
LTC1288 2.7 6 V
f
CLK
Clock Frequency V
CC
= 2.7V (Note 4) 120 kHz
t
CYC
Total Cycle Time LTC1285, f
CLK
= 120kHz 125.0 µs
LTC1288, f
CLK
= 120kHz 141.5 µs
t
hDI
Hold Time, D
IN
After CLK↑ V
CC
= 2.7V 450 ns
t
suCS
Setup Time CS↓ Before First CLK↑ (See Operating Sequence) LTC1285, V
CC
= 2.7V 2 µs
LTC1288, V
CC
= 2.7V 2 µs
t
suDI
Setup Time, D
IN
Stable Before CLK↑ V
CC
= 2.7V 600 ns
t
WHCLK
CLK High Time V
CC
= 2.7V 3.5 µs
t
WLCLK
CLK Low Time V
CC
= 2.7V 3.5 µs
t
WHCS
CS High Time Between Data Transfer Cycles V
CC
= 2.7V 2 µs
t
WLCS
CS Low Time During Data Transfer LTC1285, f
CLK
= 120kHz 123.0 µs
LTC1288, f
CLK
= 120kHz 139.5 µs
RECOM ENDED OPERATING CONDITIONS
UUUU
W
W
1
2
3
4
8
7
6
5

TOP VIEW
V
REF

+IN
–IN
GND
V
CC

CLK
D
OUT


N8 PACKAGE
8-LEAD PDIP
CS/SHDN

1
2
3
4
8
7
6
5

TOP VIEW
CH0
CH1
GND
V
CC
(V
REF
) 
CLK
D
OUT

D
IN
N8 PACKAGE
8-LEAD PDIP
CS/SHDN

1
2
3
4
8
7
6
5
TOP VIEW
V
CC
CLK
D
OUT

V
REF

+IN
–IN

GND
S8 PACKAGE
8-LEAD PLASTIC SO
CS/SHDN
1
2
3
4
8
7
6
5
TOP VIEW
V
CC
(V
REF
)

CLK
D
OUT

D
IN
CH0
CH1

GND
S8 PACKAGE
8-LEAD PLASTIC SO
CS/SHDN