LTC1864L Linear Technology, LTC1864L Datasheet - Page 4

• Manufacturer Part Number: LTC1864L
• Description: (LTC1864L / LTC1865L) 16-Bit 1/2-Channel 150ksps ADCs
• Manufacturer: Linear Technology

LTC1864L/LTC1865L
RECO
full operating temperature range, otherwise specifications are T
SYMBOL PARAMETER
V
f
t
t
t
t
t
t
t
t
t
t
range, otherwise specifications are T
Conditions, unless otherwise noted.
TI I G CHARACTERISTICS
SYMBOL
t
f
t
t
t
t
t
t
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All voltage values are with respect to GND.
Note 3: Integral nonlinearity is defined as deviation of a code from a
straight line passing through the actual endpoints of the transfer curve.
The deviation is measured from the center of the quantization band.
4
SCK
CYC
SMPL
suCONV
hDI
suDI
WHCLK
WLCLK
WHCONV
WLCONV
hCONV
CONV
SMPL(MAX)
dDO
dis
en
hDO
r
f
CC
W
U
Supply Voltage
Clock Frequency
Total Cycle Time
Analog Input Sampling Time (Note 5)
Setup Time CONV Before First SCK
(See Figure 1)
Hold Time SDI After SCK
Setup Time SDI Stable Before SCK
SCK High Time
SCK Low Time
CONV High Time Between Data
Transfer Cycles
CONV Low Time During Data Transfer
Hold Time CONV Low After Last SCK
W W
PARAMETER
Conversion Time (See Figure 1)
Maximum Sampling Frequency
Delay Time, SCK to SDO Data Valid
Delay Time, CONV to SDO Hi-Z
Delay Time, CONV to SDO Enabled
Time Output Data Remains
Valid After SCK
SDO Rise Time
SDO Fall Time
E DED OPERATI G CO DITIO S
U
A
= 25 C. V
CC
U
CONDITIONS
LTC1864L
LTC1865L
LTC1865L
LTC1865L
f
f
= 2.7V, V
CONDITIONS
C
C
C
C
C
SCK
SCK
The denotes specifications which apply over the full operating temperature
LOAD
LOAD
LOAD
LOAD
LOAD
= f
= f
= 20pF
= 20pF
= 20pF
= 20pF
= 20pF
SCK(MAX)
SCK(MAX)
REF
U
A
= 2.5V, f
= 25 C.
Note 4: Channel leakage current is measured while the part is in sample
mode.
Note 5: Assumes f
not have to be clocked during this time if the SDO data word is not
desired. In the case of the LTC1865L a minimum of 2 clocks are required
on the SCK input after CONV falls to configure the MUX during this time.
SCK
U
= f
SCK(MAX)
The denotes specifications which apply over the
SCK
as defined in Recommended Operating
= f
SCK(MAX)
In the case of the LTC1864L SCK does
16 • SCK + t
t
45%
45%
MIN
CONV
MIN
150
2.7
DC
16
14
60
30
30
16
26
5
LTC1864L/LTC1865L
LTC1864L/LTC1865L
TYP
CONV
TYP
3.7
45
55
35
15
25
12
MAX
MAX
4.66
3.6
120
120
55
60
8
UNITS
1/f
1/f
UNITS
18645Lf
MHz
SCK
SCK
SCK
SCK
SCK
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
s
s
s