LTC1850 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1850' PDF : 28 Pages View PDF
LTC1850/LTC1851
POWER REQUIRE E TS The q 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
OVDD
IDD
PDISS
Positive Supply Voltage
Output Positive Supply Voltage
Positive Supply Current
Power Dissipation
Power Down Positive Supply Current
Nap Mode
Sleep Mode
(Note 10)
(Note 10)
VDD = VDD = OVDD = 5V,
fSAMPLE = 1.25MHz
SHDN = 0V, CS = 0V
SHDN = 0V, CS = 5V
q 4.75
5.25
V
q 2.7
5.25
V
q
8
10
mA
q
40
50
mW
1
mA
50
µA
Power Down Power Dissipation
Nap Mode
Sleep Mode
SHDN = 0V, CS = 0V
SHDN = 0V, CS = 5V
5
mW
0.25
mW
WU
TI I G CHARACTERISTICS The q 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
fSAMPLE(MAX) Maximum Sampling Frequency
Acquisition + Conversion
q 1.25
q
MHz
800
ns
tCONV
tACQ
t1
t2
t3
t4
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
(Notes 9, 10)
(Notes 9, 10)
(Notes 9, 10)
Nap Mode (Note 10)
Sleep Mode, 10µF REFCOMP
Bypass Capacitor (Note 10)
q
650
ns
q
150
ns
q0
ns
q 10
ns
200
ns
200
ns
10
ms
t5
CONVST Low Time
t6
CONVST to BUSY Delay
(Notes 10, 11)
CL = 25pF
q 50
ns
10
ns
q
60
ns
t7
Data Ready Before BUSY
20
35
ns
q 15
ns
t8
Delay Between Conversions
t9
Wait Time RD After BUSY
t10
Data Access Time After RD
(Note 10)
CL = 25pF
q 50
ns
q –5
ns
20
35
ns
q
45
ns
CL = 100pF
25
45
ns
q
60
ns
t11
BUS Relinquish Time
0°C to 70°C
– 40°C to 85°C
10
30
ns
q
35
ns
q
40
ns
t12
RD Low Time
q t10
ns
t13
CONVST High Time
(Note 10)
q 50
ns
t14
Latch Setup Time
(Notes 9, 10)
q 10
ns
t15
Latch Hold Time
(Notes 9, 10)
q 10
ns
t16
WR Low Time
(Note 10)
q 50
ns
18501f
5
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