LTC1098 LINER [Linear Technology], LTC1098 Datasheet - Page 7

• Manufacturer Part Number: LTC1098
• Description: Micropower Sampling 8-Bit Serial I/O A/D Converters
• Manufacturer: LINER [Linear Technology]

LTC1096L/LTC1098L
V
AC CHARACTERISTICS
LTC1096/LTC1098
V
SYMBOL
t
f
t
t
t
t
t
t
t
C
SYMBOL
t
f
t
t
t
t
t
t
t
C
The
range.
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: For the 8-lead PDIP, consult the factory.
Note 4: Linearity error is specified between the actual and points of the
A/D transfer curve.
Note 5: Total unadjusted error includes offset, full scale, linearity,
multiplexer and hold step errors.
Note 6: Two on-chip diodes are tied to each reference and analog input
which will conduct for reference or analog input voltages one diode drop
below GND or one diode drop above V
bias of either diode. This means that as long as the reference or analog
SMPL
SMPL(MAX)
CONV
dDO
dis
en
hDO
f
r
SMPL
SMPL(MAX)
CONV
dDO
dis
en
hDO
f
r
CC
IN
CC
IN
= 2.65V, V
= 3V, V
denotes specifications which apply over the operating temperature
REF
PARAMETER
Analog Input Sample Time
Maximum Sampling Frequency
Conversion Time
Delay Time, CLK to D
Delay Time, CS to D
Delay Time, CLK to D
Time Output Data Remains Valid After CLK
D
D
Input Capacitance
PARAMETER
Analog Input Sample Time
Maximum Sampling Frequency
Conversion Time
Delay Time, CLK to D
Delay Time, CS to D
Delay Time, CLK to D
Time Output Data Remains Valid After CLK
D
D
Input Capacitance
OUT
OUT
OUT
OUT
REF
= 2.5V, f
Fall Time
Rise Time
Fall Time
Rise Time
= 2.5V, f
CLK
CLK
= 250kHz, unless otherwise noted.
OUT
OUT
= 250kHz, unless otherwise noted.
OUT
OUT
OUT
OUT
CC
Hi-Z
Hi-Z
Data Valid
Enable
Data Valid
Enable
. This spec allows 50mV forward
CONDITIONS
See Operating Sequence
See Operating Sequence
See Test Circuits
See Test Circuits
See Test Circuits
C
See Test Circuits
See Test Circuits
Analog Inputs On Channel
Analog Inputs Off Channel
Digital Input
CONDITIONS
See Operating Sequence
See Operating Sequence
See Test Circuits (Note 9)
See Test Circuits (Note 9)
See Test Circuits (Note 9)
C
See Test Circuits (Note 9)
See Test Circuits (Note 9)
Analog Inputs On Channel
Analog Inputs Off Channel
Digital Input
LOAD
LOAD
= 100pF
= 100pF
input does not exceed the supply voltage by more than 50mV, the output
code will be correct. To achieve an absolute 0V to 5V input voltage range
will therefore require a minimum supply voltage of 4.950V over initial
tolerance, temperature variations and loading. For 5.5V < V
reference and analog input range cannot exceed 5.55V. If reference and
analog input range are greater than 5.55V, the output code will not be
guaranteed to be correct.
Note 7: The supply voltage range for the LTC1096L/LTC1098L is from
2.65V to 4V. The supply voltage range for the LTC1096 is from 3V to 9V,
but the supply voltage range for the LTC1098 is only from 3V to 6V.
Note 8: Channel leakage current is measured after the channel selection.
Note 9: These specifications are either correlated from 5V specifications or
guaranteed by design.
LTC1096/LTC1096L
LTC1098/LTC1098L
16.5
16.5
MIN
MIN
TYP
TYP
500
220
160
400
500
220
160
400
1.5
1.5
70
50
25
70
50
25
8
5
5
8
5
5
1000
MAX
1000
MAX
800
480
250
200
800
480
250
150
CC
CLK Cycles
CLK Cycles
CLK Cycles
CLK Cycles
9V,
UNITS
UNITS
7
kHz
kHz
ns
ns
ns
ns
ns
ns
pF
pF
pF
ns
ns
ns
ns
ns
ns
pF
pF
pF