LTC1278
POWER REQUIRE E TS (Note 5)
W U
LTC1278-4/LTC1278-5
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
Positive Supply Voltage (Notes 10, 11)
Unipolar
Bipolar
4.95
4.75
5.25
5.25
V
V
DD
V
Negative Supply Voltage (Note 10)
Positive Supply Current
Bipolar Only
–2.45
–5.25
V
SS
I
I
f
= 500ksps
SAMPLE
●
●
15.0
1.7
29.5
3.0
mA
mA
DD
SHDN = 0V
Negative Supply Current
Power Dissipation
f
f
= 500ksps, V = –5V
●
0.12
0.30
mA
SS
SAMPLE
SS
P
= 500ksps
●
●
75.0
8.5
150
15
mW
mW
D
SAMPLE
SHDN = 0V
W U
TI I G CHARACTERISTICS (Note 5)
LTC1278-4/LTC1278-5
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
f
t
t
Maximum Sampling Frequency
LTC1278-4
LTC1278-5
●
●
400
500
kHz
SAMPLE(MAX)
SAMPLE(MIN)
CONV
Minimum Throughput Time
(Acquisition Time Plus Conversion Time)
LTC1278-4
LTC1278-5
●
●
2.5
2.0
µs
µs
Conversion Time
LTC1278-4
LTC1278-5
2.0
1.6
2.3
1.85
µs
µs
t
t
t
t
t
t
Acquisition Time
200
ns
ns
ns
ns
ns
ACQ
1
CS↓ to RD↓ Setup Time
CS↓ to CONVST↓ Setup Time
SHDN↑ to CONVST↓ Wake-Up Time
CONVST Low Time
(Notes 9, 10)
(Notes 9, 10)
(Note 10)
●
●
0
20
2
350
40
3
(Notes 10, 12)
●
40
4
CONVST↓ to BUSY↓ Delay
C = 100pF
110
130
140
ns
ns
ns
5
L
Commercial
Industrial
●
●
t
t
t
Data Ready Before BUSY↑
Wait Time RD↓ After BUSY↑
Data Access Time After RD↓
C = 100pF
●
●
20
40
50
ns
ns
6
7
8
L
Mode 2, (see Figure 14) (Note 9)
–20
C = 20pF (Note 9)
90
110
120
ns
ns
ns
L
Commercial
Industrial
●
●
C = 100pF
Commercial
Industrial
70
30
125
150
170
ns
ns
ns
L
●
●
t
Bus Relinquish Time
20
20
20
75
85
90
ns
ns
ns
9
Commercial
Industrial
●
●
t
t
t
RD Low Time
(Note 9)
●
●
t
ns
ns
ns
10
11
12
8
CONVST High Time
(Notes 9, 12)
Jitter <50ps
40
Aperture Delay of Sample-and-Hold
15
4
Linear [ Linear ]
