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參數(shù)資料
型號： LTC2143IUP-14#TRPBF
廠商： Linear Technology
文件頁數(shù)： 37/38頁
文件大小： 0K
描述： IC ADC DUAL 14BIT 80 MSPS 64-QFN
標準包裝： 2,000
位數(shù)： 14
采樣率（每秒）： 80M
數(shù)據(jù)接口： 并聯(lián)，串行，SPI
轉換器數(shù)目： 2
功率耗散（最大）： 272mW
電壓電源： 模擬和數(shù)字
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 64-WFQFN 裸露焊盤
供應商設備封裝： 64-QFN（9x9）
包裝： 帶卷 (TR)
輸入數(shù)目和類型： 2 個差分
配用： DC890B-ND - BOARD USB DATA COLLECTION
LTC2145-14/
LTC2144-14/LTC2143-14
8
21454314fa
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Digital Data Outputs (LVDS Mode)
tD
ENC to Data Delay
CL = 5pF (Note 8)
l
1.1
1.8
3.2
ns
tC
ENC to CLKOUT Delay
CL = 5pF (Note 8)
l
1
1.5
2.7
ns
tSKEW
DATA to CLKOUT Skew
tD – tC (Note 8)
l
0
0.3
0.6
ns
Pipeline Latency
6.5
Cycles
SPI Port Timing (Note 8)
tSCK
SCK Period
Write Mode
Readback Mode, CSDO = 20pF, RPULLUP = 2k
l
40
250
ns
tS
CS to SCK Setup Time
l
5ns
tH
SCK to CS Setup Time
l
5ns
tDS
SDI Setup Time
l
5ns
tDH
SDI Hold Time
l
5ns
tDO
SCK Falling to SDO Valid
Readback Mode, CSDO = 20pF, RPULLUP = 2k
l
125
ns
TIMING CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. (Note 5)
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 = 125MHz (LTC2145), 105MHz
(LTC2144), or 80MHz (LTC2143), LVDS outputs, 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 = 1.8V, fSAMPLE = 125MHz (LTC2145), 105MHz (LTC2144),
or 80MHz (LTC2143), CMOS outputs, ENC+ = single-ended 1.8V square
wave, ENC– = 0V, input range = 2VP-P with differential drive, 5pF load on
each digital output unless otherwise noted. The supply current and power
dissipation specifications are totals for the entire IC, not per channel.
Note 10: Recommended operating conditions.
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