Datasheet

4
LTC1417
sn1417 1417fas
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
f
SAMPLE(MAX)
Maximum Sampling Frequency ● 400 kHz
t
CONV
Conversion Time ● 1.8 2.25 µs
t
ACQ
Acquisition Time ● 150 500 ns
t
ACQ
+ t
CONV
Acquisition Plus Conversion Time ● 2.1 2.5 µs
t
1
SHDN↑ to CONVST↓ Wake-Up Time from Nap Mode (Note 10) 500 ns
t
2
CONVST Low Time (Notes 10, 11) ● 40 ns
t
3
CONVST to BUSY Delay C
L
= 25pF ● 35 70 ns
t
4
Data Ready Before BUSY↑ C
L
= 25pF ● 712 ns
t
5
Delay Between Conversions (Note 10) ● 250 ns
t
6
Wait Time RD↓ After BUSY↑ ● –5 ns
t
7
Data Access Time After RD↓ C
L
= 25pF 15 30 ns
● 40 ns
C
L
= 100pF 20 40 ns
● 55 ns
t
8
Bus Relinquish Time ● 35 ns
t
9
RD Low Time ● t
7
ns
t
10
CONVST High Time ● 40 ns
t
11
Delay Time, SCLK↓ to D
OUT
Valid C
L
= 25pF ● 15 40 ns
t
12
Time from Previous Data Remain Valid After SCLK↓ C
L
= 25pF ● 510 ns
f
SCLK
Shift Clock Frequency (Note 13) ● 0 20 MHz
f
EXTCLKIN
External Conversion Clock Frequency ● 0.05 9 MHz
t
dEXTCLKIN
Delay Time, CONVST↓ to External Conversion Clock Input (Note 9) ● 20 µs
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
DD
Positive Supply Voltage (Notes 10, 11) 4.75 5.25 V
V
SS
Negative Supply Voltage (Note 10) Bipolar Only (V
SS
= 0V for Unipolar) –4.75 –5.25 V
I
DD
Positive Supply Current Unipolar, RD High (Note 5) ● 4.0 5.5 mA
Bipolar, RD High (Note 5)
● 4.3 6.0 mA
Nap Mode SHDN = 0V, RD = 0V 750 µA
Sleep Mode SHDN = 0V, RD = 5V 0.1 µA
I
SS
Negative Supply Current Bipolar, RD High (Note 5) ● 2.0 2.8 mA
Nap Mode SHDN = 0V, RD = 0V 0.7 µA
Sleep Mode SHDN = 0V, RD = 5V 1.5 nA
P
DIS
Power Dissipation Unipolar ● 20.0 27.5 mW
Bipolar
● 31.5 44 mW
POWER REQUIRE E TS
WU
The ● indicates specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 5)
The ● indicates specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C. (Note 5)
TI I G CHARACTERISTICS
UW