Datasheet

LTC2253/LTC2252
5
22532fa
POWER REQUIRE E TS
WU
The ● denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C. (Note 8)
TI I G CHARACTERISTICS
UW
The ● denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C. (Note 4)
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
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 GND or above V
DD
, they
will be clamped by internal diodes. This product can handle input currents
of greater than 100mA below GND or above V
DD
without latchup.
Note 4: V
DD
= 3V, f
SAMPLE
= 125MHz (LTC2253) or 105MHz (LTC2252),
input range = 2V
P-P
with differential drive, clock duty cycle stabilizer on,
unless otherwise noted.
Note 5: 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 6: Offset error is the offset voltage measured from –0.5 LSB when
the output code flickers between 0000 0000 0000 and 1111 1111 1111.
Note 7: Guaranteed by design, not subject to test.
Note 8: V
DD
= 3V, f
SAMPLE
= 125MHz (LTC2253) or 105MHz (LTC2252),
input range = 1V
P-P
with differential drive.
Note 9: Recommend operating conditions.
LTC2253 LTC2252
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
V
DD
Analog Supply (Note 9) ● 2.85 3 3.4 2.85 3 3.4 V
Voltage
OV
DD
Output Supply Voltage (Note 9) ● 0.5 3 3.6 0.5 3 3.6 V
I
VDD
Supply Current ● 132 156 107 126 mA
P
DISS
Power Dissipation ● 395 468 320 378 mW
P
SHDN
Shutdown Power SHDN = H, 2 2 mW
OE = H, No CLK
P
NAP
Nap Mode Power SHDN = H, 15 15 mW
OE = L, No CLK
LTC2253 LTC2252
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
f
s
Sampling Frequency (Note 9) ● 1 125 1 105 MHz
t
L
CLK Low Time Duty Cycle Stabilizer Off ● 3.8 4 500 4.5 4.76 500 ns
Duty Cycle Stabilizer On
● 3 4 500 3 4.76 500 ns
(Note 7)
t
H
CLK High Time Duty Cycle Stabilizer Off ● 3.8 4 500 4.5 4.76 500 ns
Duty Cycle Stabilizer On
● 3 4 500 3 4.76 500 ns
(Note 7)
t
AP
Sample-and-Hold 0 0 ns
Aperture Delay
t
D
CLK to DATA Delay C
L
= 5pF (Note 7) ● 1.4 2.7 5.4 1.4 2.7 5.4 ns
Data Access Time C
L
= 5pF (Note 7) ● 4.3 10 4.3 10 ns
After OE↓
BUS Relinquish Time (Note 7) ● 3.3 8.5 3.3 8.5 ns
Pipeline 5 5 Cycles
Latency