LTC1292(RevB) Ver la hoja de datos (PDF) - Linear Technology
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LTC1292 Datasheet PDF : 24 Pages
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LTC1292/LTC1297
AC CHARACTERISTICS The q denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at TA = 25°C. (Note 3)
LTC1292B/LTC1297B
LTC1292C/LTC1297C
LTC1292D/LTC1297D
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
fCLK
Clock Frequency
VCC = 5V (Note 6)
(Note 9)
1.0
MHz
tSMPL
Analog Input Sample Time
See Operating Sequence LTC1292
LTC1297
1.5CLK
0.5CLK+ 5.5µs
tCONV
Conversion Time
See Operating Sequence
12
CLK
Cycles
tCYC
Total Cycle Time
See Operating Sequence LTC1292
(Note 6)
LTC1297
14CLK + 2.5µs
14CLK + 6µs
tdDO
Delay Time, CLK↓ to DOUT Data Valid
See Test Circuits
q
160 300
ns
tdis
Delay Time, CS↑ to DOUT Hi-Z
ten
Delay Time, CLK↓ to DOUT Enabled
See Test Circuits
See Test Circuits
q
80
150
ns
q
80
200
ns
thDO
Time Output Data Remains Valid After CLK↓
tf
DOUT Fall Time
See Test Circuits
130
ns
q
65
130
ns
tr
tWHCLK
DOUT Rise Time
CLK High Time
See Test Circuits
VCC = 5V (Note 6)
q
25
50
ns
300
ns
tWLCLK
CLK Low Time
VCC = 5V (Note 6)
400
ns
tsuCS
Setup Time, CS↓ Before CLK↑
VCC = 5V (Note 6)
LTC1292
50
ns
(LTC1297 Wakeup Time)
LTC1297
5.5
µs
tWHCS
CS High Time Between Data Transfer Cycles VCC = 5V (Note 6)
LTC1292
2.5
µs
LTC1297
0.5
µs
tWLCS
CS Low Time During Data Transfer
VCC = 5V (Note 6)
LTC1292
LTC1297
14CLK
14CLK+ 5.5µs
CIN
Input Capacitance
Analog Inputs On Channel
Analog Inputs Off Channel
100
pF
5
pF
Digital Inputs
5
pF
U
DIGITAL A D DC ELECTRICAL CHARACTERISTICS The q denotes the specifications which
apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3)
LTC1292B/LTC1297B
LTC1292C/LTC1297C
LTC1292D/LTC1297D
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
VIH
VIL
IIH
IIL
VOH
VOL
IOZ
ISOURCE
ISINK
High Level Input Voltage
Low Level Input Voltage
High Level Input Current
Low Level Input Current
High Level Output Voltage
Low Level Output Voltage
High Z Output Leakage
Output Source Current
Output Sink Current
VCC = 5.25V
VCC = 4.75V
VIN = VCC
VIN = 0V
VCC = 4.75V, IO = –10µA
IO = 360µA
VCC = 4.75V, IO = 1.6mA
VOUT = VCC, CS High
VOUT = 0V, CS High
VOUT = 0V
VOUT = VCC
q
2.0
q
0.8
q
2.5
q
–2.5
4.7
q
2.4
4.0
q
0.4
q
3
q
–3
–20
20
V
V
µA
µA
V
V
V
µA
µA
mA
mA
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