LTC2173-14 Linear Technology Corporation, LTC2173-14 Datasheet - Page 7

• Manufacturer Part Number: LTC2173-14
• Description: (LTC217x-14) 125Msps Low Power Quad ADCs
• Manufacturer: Linear Technology Corporation

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SYMBOL
SPI Port Timing (Note 8)
t
t
t
t
t
t
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 GND with GND and OGND
shorted (unless otherwise noted).
Note 3: When these pin voltages are taken below GND or above V
will be clamped by internal diodes. This product can handle input currents
of greater than 100mA below GND or above V
Note 4: When these pin voltages are taken below GND they will be
clamped by internal diodes. When these pin voltages are taken above V
they will not be clamped by internal diodes. This product can handle input
currents of greater than 100mA below GND without latchup.
Note 5: V
(LTC2174), or 80MHz (LTC2173), 2-lane output mode, differential ENC
ENC
otherwise noted.
TIMING CHARACTERISTICS
range, otherwise specifi cations are at T
SCK
S
H
DS
DH
DO
–
= 2V
DD
P-P
PARAMETER
SCK Period
CS to SCK Setup Time
SCK to CS Setup Time
SDI Setup Time
SDI Hold Time
SCK Falling to SDO Valid
= OV
sine wave, input range = 2V
DD
= 1.8V, f
SAMPLE
= 125MHz (LTC2175), 105MHz
P-P
with differential drive, unless
DD
A
= 25°C. (Note 5)
CONDITIONS
Write Mode
Readback Mode, C
= 2k
= 2k
Readback Mode, C
without latchup.
The
l
DD
SDO
SDO
denotes the specifi cations which apply over the full operating temperature
, they
+
= 20pF , R
= 20pF , R
/
DD
PULLUP
PULLUP
Note 6: Integral nonlinearity is defi ned as the deviation of a code from a
best fi t straight line to the transfer curve. The deviation is measured from
the center of the quantization band.
Note 7: Offset error is the offset voltage measured from –0.5 LSB when
the output code fl ickers between 00 0000 0000 0000 and 11 1111 1111
1111 in 2’s complement output mode.
Note 8: Guaranteed by design, not subject to test.
Note 9: V
(LTC2174), or 80MHz (LTC2173), 2-lane output mode, ENC
ended 1.8V square wave, ENC
drive, unless otherwise noted.
Note 10: Recommended operating conditions.
Note 11: The maximum sampling frequency depends on the speed grade
of the part and also which serialization mode is used. The maximum serial
data rate is 1000Mbps so t
Note 12: Near-channel crosstalk refers to Ch. 1 to Ch.2, and Ch.3 to Ch.4.
Far-channel crosstalk refers to Ch.1 to Ch.3, Ch.1 to Ch.4, Ch.2 to Ch.3, and
Ch.2 to Ch.4.
DD
LTC2174-14/LTC2173-14
= OV
l
l
l
l
l
l
l
DD
= 1.8V, f
MIN
250
40
5
5
5
5
SER
SAMPLE
–
must be greater than or equal to 1ns.
= 0V, input range = 2V
= 125MHz (LTC2175), 105MHz
TYP
LTC2175-14/
P-P
MAX
125
with differential
+
= single-
21754314p
UNITS
7
ns
ns
ns
ns
ns
ns
ns