LTC2264UJ-14(RevB) Просмотр технического описания (PDF) - Linear Technology
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LTC2264UJ-14 Datasheet PDF : 32 Pages
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LTC2265-14/
LTC2264-14/LTC2263-14
TIMING CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. (Note 5)
LTC2265-14
LTC2264-14
LTC2263-14
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
fS
Sampling Frequency
(Notes 10, 11)
l5
65 5
40 5
25 MHz
tENCL ENC Low Time (Note 8) Duty Cycle Stabilizer Off l 7.3 7.69 100 11.88 12.5 100 19 20 100
ns
Duty Cycle Stabilizer On l 2 7.69 100 2 12.5 100 2 20 100
ns
tENCH ENC High Time (Note 8) Duty Cycle Stabilizer Off l 7.3 7.69 100 11.88 12.5 100 19 20 100
ns
Duty Cycle Stabilizer On l 2 7.69 100 2 12.5 100 2 20 100
ns
tAP
Sample-and-Hold
Acquisition Delay Time
0
0
0
ns
SYMBOL PARAMETER
CONDITIONS
Digital Data Outputs (RTERM = 100Ω Differential, CL = 2pF to GND on Each Output)
tSER
Serial Data Bit Period Two Lanes, 16-Bit Serialization
Two Lanes, 14-Bit Serialization
Two Lanes, 12-Bit Serialization
One Lane, 16-Bit Serialization
One Lane, 14-Bit Serialization
One Lane, 12-Bit Serialization
tFRAME
tDATA
tPD
tR
FR to DCO Delay
DATA to DCO Delay
Propagation Delay
Output Rise Time
(Note 8)
(Note 8)
(Note 8)
Data, DCO, FR, 20% to 80%
tF
Output Fall Time
Data, DCO, FR, 20% to 80%
DCO Cycle-to-Cycle Jitter tSER = 1ns
Pipeline Latency
SPI Port Timing (Note 8)
tSCK
SCK Period
Write Mode
Readback Mode, CSDO = 20pF, RPULLUP = 2k
tS
CS to SCK Set-Up Time
tH
SCK to CS Set-Up Time
tDS
SDI Set-Up Time
tDH
SDI Hold Time
tDO
SCK Falling to SDO Valid Readback Mode, CSDO = 20pF, RPULLUP = 2k
MIN
TYP
MAX
UNITS
1 / (8 • fS)
s
1 / (7 • fS)
1 / (6 • fS)
1 / (16 • fS)
1 / (14 • fS)
1 / (12 • fS)
l 0.35 • tSER
0.5 • tSER
0.65 • tSER
s
l 0.35 • tSER
0.5 • tSER
0.65 • tSER
s
l 0.7n + 2 • tSER 1.1n + 2 • tSER 1.5n + 2 • tSER
s
0.17
ns
0.17
ns
60
psP-P
6
Cycles
l
40
l
250
l
5
l
5
l
5
l
5
l
ns
ns
ns
ns
ns
ns
125
ns
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 VDD, they
will be clamped by internal diodes. This product can handle input currents
of greater than 100mA below GND or above VDD without latchup.
Note 4: When these pin voltages are taken below GND they will be
clamped by internal diodes. When these pin voltages are taken above VDD
they will not be clamped by internal diodes. This product can handle input
currents of greater than 100mA below GND without latchup.
Note 5: VDD = OVDD = 1.8V, fSAMPLE = 65MHz (LTC2265), 40MHz
(LTC2264), or 25MHz (LTC2263), 2-lane output mode, differential ENC+/
ENC– = 2VP-P sine wave, input range = 2VP-P with differential drive, unless
otherwise noted.
Note 6: Integral nonlinearity is defined as the deviation of a code from a
best fit 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 flickers 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: VDD = OVDD = 1.8V, fSAMPLE = 65MHz (LTC2265), 40MHz
(LTC2264), or 25MHz (LTC2263), 2-lane output mode, ENC+ = single-
ended 1.8V square wave, ENC– = 0V, input range = 2VP-P with differential
drive, unless otherwise noted. The supply current and power dissipation
specifications are totals for the entire chip, not per channel.
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 tSER must be greater than or equal to 1ns.
22654314fb
6
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