Datasheet

4
LTC1420
1420fa
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
DD
Positive Supply Voltage (Note 10) 4.75 5.25 V
OV
DD
Output Supply Voltage (Note 10) 2.7 5.25 V
V
SS
Negative Supply Voltage Dual Supply Mode – 5.25 –4.75 V
Single Supply Mode 0 V
I
DD
Positive Supply Current ● 48 58 mA
I
SS
Negative Supply Current ● 1.4 2.5 mA
P
D
Power Dissipation ● 250 300 mW
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
f
SAMPLE
Maximum Sampling Frequency ● 0.02 10 MHz
t
CONV
Conversion Time ● 70 90 ns
t
ACQ
Acquisition Time ● 10 30 ns
t
H
CLK High Time ● 20 50 ns
t
L
CLK Low Time ● 20 50 ns
t
AP
Aperature Delay of Sample-and-Hold –250 ps
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 GND and OGND
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.
Note 4: When these pin voltages are taken below V
SS
they will be clamped
by internal diodes. This product can handle input currents greater than
100mA below V
SS
without latchup. GAIN is not clamped to V
DD
. When CLK
is taken above V
DD
, it will be clamped by an internal diode. The CLK pin
can handle input currents of greater than 100mA above V
DD
without
latchup.
Note 5: V
DD
= 5V, V
SS
= –5V or 0V, f
SAMPLE
= 10MHz, t
r
= t
f
= 5ns unless
otherwise specified.
Note 6: Dynamic specifications are guaranteed for dual supply operation
with a single-ended +A
IN
input and –A
IN
grounded. For single supply
dynamic specifications, refer to the Typical Performance Characteristics.
Note 7: Integral nonlinearity is defined as the deviation of a code from a
straight line passing through the actual endpoints of the transfer curve.
The deviation is measured from the center of the quantization band.
Note 8: Bipolar offset is the offset voltage measured from –0.5LSB
when the output code flickers between 0000 0000 0000 and
1111 1111 1111.
Note 9: Guaranteed by design, not subject to test.
Note 10: Recommended operating conditions.
The ● denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C. Specifications are guaranteed for both dual supply and single supply operation.
(Note 5)
The
● denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C. Specifications are guaranteed for both dual supply and single supply operation.
(Note 5)
POWER REQUIRE E TS
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TI I G CHARACTERISTICS
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