Datasheet

LTC1860/LTC1861
5
18601fa
DIGITAL AND DC ELECTRICAL CHARACTERISTICS
The ● denotes specifi cations which apply
over the full operating temperature range, otherwise specifi cations are T
A
= 25°C. V
CC
= 5V, V
REF
= 5V, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I
OZ
Hi-Z Output Leakage CONV = V
CC
l
±3 μA
I
SOURCE
Output Source Current V
OUT
= 0V –25 mA
I
SINK
Output Sink Current V
OUT
= V
CC
20 mA
I
REF
Reference Current (LTC1860 SO-8,
MSOP and LTC1861 MSOP)
CONV = V
CC
f
SMPL
= f
SMPL(MAX)
l
l
0.001
0.05
3
0.1
μA
mA
I
CC
Supply Current CONV = V
CC
After Conversion
CONV = V
CC
After Conversion, H-Grade
f
SMPL
= f
SMPL(MAX)
l
l
l
0.001
0.001
0.85
3
5
1.3
μA
μA
mA
P
D
Power Dissipation f
SMPL
= f
SMPL(MAX)
1.25 mV
RECOMMENDED OPERATING CONDITIONS
The ● denotes specifi cations which apply over
the full operating temperature range, otherwise specifi cations are T
A
= 25°C.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Supply Voltage 4.75 5.25 V
f
SCK
Clock Frequency
H-Grade
l
l
20
16.7
MHz
MHz
t
CYC
Total Cycle Time 12 • SCK + t
CONV
μs
t
SMPL
Analog Input Sampling Time LTC1860 (Note 5)
LTC1861 (Note 5)
12
10
SCK
SCK
t
suCONV
Setup Time CONV↓ Before First SCK↑,
(See Figure 1) H-Grade
60
65
30
30
ns
ns
t
hDI
Holdtime SDI After SCK↑ LTC1861 15 ns
t
suDI
Setup Time SDI Stable Before SCK↑ LTC1861 15 ns
t
WHCLK
SCK High Time f
SCK
= f
SCK(MAX)
40% 1/f
SCK
t
WLCLK
SCK Low Time f
SCK
= f
SCK(MAX)
40% 1/f
SCK
t
WHCONV
CONV High Time Between Data Transfer
Cycles
(Note 5) t
CONV
μs
t
WLCONV
CONV Low Time During Data Transfer (Note 5) 12 SCK
t
hCONV
Hold Time CONV Low After Last SCK↑ 13 ns