Datasheet

4
LTC1608
POWER REQUIRE E TS
WU
The ● denotes specifications that apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 5)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
DD
Positive Supply Voltage (Notes 12, 13) 4.75 5.25 V
V
SS
Negative Supply Voltage (Note 12) –4.75 –5.25 V
I
DD
Positive Supply Current CS = RD = 0V ● 22 35 mA
Nap Mode CS = 0V, SHDN = 0V 1.5 2.4 mA
Sleep Mode CS = 5V, SHDN = 0V 1 100 µA
I
SS
Negative Supply Current CS = RD = 0V ● 32 49 mA
Nap Mode CS = 0V, SHDN = 0V 1 100 µA
Sleep Mode CS = 5V, SHDN = 0V 1 100 µA
P
D
Power Dissipation CS = RD = 0V ● 270 420 mW
Nap Mode CS = 0V, SHDN = 0V 7.5 12 mW
Sleep Mode CS = 5V, SHDN = 0V 0.01 1 mW
TI I G CHARACTERISTICS
UW
The ● denotes specifications that apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 5)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
f
SMPL(MAX)
Maximum Sampling Frequency ● 500 600 kHz
t
CONV
Conversion Time ● 1.0 1.45 1.8 µs
t
ACQ
Acquisition Time (Notes 11, 14) ● 400 ns
t
ACQ+CONV(MIN)
Throughput Time (Acquisition + Conversion) ● 1.67 2 µs
t
1
CS to RD Setup Time (Notes 11, 12, 15) ● 0ns
t
2
CS↓ to CONVST↓ Setup Time (Notes 11, 12) ● 10 ns
t
3
SHDN↓ to CS↑ Setup Time (Notes 11, 12) ● 10 ns
t
4
SHDN↑ to CONVST↓ Wake-Up Time CS = Low (Note 12) 400 ns
t
5
CONVST Low Time (Note 12) ● 40 ns
t
6
CONVST to BUSY Delay C
L
= 25pF 36 ns
● 80 ns
t
7
Data Ready Before BUSY↑ 60 ns
● 32 ns
t
8
Delay Between Conversions (Note 12) ● 200 ns
t
9
Wait Time RD↓ After BUSY↑ (Note 12) ● –5 ns
t
10
Data Access Time After RD↓ C
L
= 25pF 25 40 ns
● 50 ns
C
L
= 100pF (Note 11) 45 60 ns
● 75 ns
t
11
Bus Relinquish Time 30 50 ns
● 60 ns
t
12
RD Low Time (Note 12) ● t
10
ns
t
13
CONVST High Time (Note 12) ● 40 ns
t
14
Aperture Delay of Sample-and-Hold 2 ns
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All voltage values are with respect to ground with DGND, OGND
and AGND wired together unless otherwise noted.
Note 3: When these pin voltages are taken below V
SS
or above V
DD
, they
will be clamped by internal diodes. This product can handle input currents
greater than 100mA below V
SS
or above V
DD
without latchup.