LTC1853I 查看數據表（PDF） - Linear Technology
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LTC1853I Datasheet PDF : 24 Pages
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LTC1852/LTC1853
POWER REQUIREMENTS The ● denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. (Note 5)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
VDD
Analog Positive Supply Voltage
(Note 10)
● 2.7
5.5
V
OVDD
Output Positive Supply Voltage
(Note 10)
● 2.7
5.5
V
IDD
PDISS
IDDPD
Positive Supply Current
Power Dissipation
Power Down Positive Supply Current
Nap Mode
Sleep Mode
VDD = OVDD = 5V, fS = 400kHz
●
VDD = OVDD = 2.7V, fS = 250kHz
●
VDD = OVDD = 5V, fS = 400kHz
●
VDD = OVDD = 2.7V, fS = 250kHz
●
SHDN = Low, CS = Low
SHDN = Low, CS = High
2
3
mA
0.83
1.33
mA
10
15
mW
2.25
4
mW
0.5
mA
20
μA
Power Down Power Dissipation
VDD = VDD = OVDD = 5V, fS = 400kHz
Nap Mode
SHDN = Low, CS = Low
2.5
mW
Sleep Mode
SHDN = Low, CS = High
0.1
mW
Power Down Power Dissipation
VDD = VDD = OVDD = 3V, fS = 250kHz
Nap Mode
SHDN = Low, CS = Low
1.5
mW
Sleep Mode
SHDN = Low, CS = High
0.06
mW
TIMING CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. (Note 5)
SYMBOL
PARAMETER
fSAMPLE(MAX) Maximum Sampling Frequency
Acquisition + Conversion
tCONV
tACQ
t1
t2
t3
t4
t5
t6
t7
t8
t9
t10
Conversion Time
Acquisition Time
CS to RD Setup Time
CS to CONVST Setup Time
CS to SHDN Setup Time
SHDN to CONVST Wake-Up Time
CONVST Low Time
CONVST to BUSY Delay
Data Ready Before BUSY
Delay Between Conversions
Wait Time RD After BUSY
Data Access Time After RD
t11
BUS Relinquish Time
t12
RD Low Time
CONDITIONS
VDD = 5.5V
VDD = 2.7V
VDD = 5.5V
VDD = 2.7V
VDD = 5.5V
VDD = 2.7V
(Note 13)
(Notes 9, 10)
(Notes 9, 10)
(Notes 9, 10)
Nap Mode (Note 10)
Sleep Mode (Note 10)
(Notes 10, 11)
CL = 25pF
(Note 10)
CL = 25pF
CL = 100pF
0°C to 70°C
– 40°C to 85°C
MIN
TYP
● 400
● 250
●
●
●
●
●
●0
● 10
200
200
10
● 50
10
●
20
35
● 15
● 50
● –5
20
●
25
●
10
●
●
● t10
MAX UNITS
kHz
kHz
2.5
μs
4.0
μs
2.0
μs
3.5
μs
150
ns
ns
ns
ns
ns
ms
ns
ns
60
ns
ns
ns
ns
ns
35
ns
45
ns
45
ns
60
ns
30
ns
35
ns
40
ns
ns
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