Datasheet LTC2175-14, LTC2174-14, LTC2173-14 (Analog Devices) - 7

LTC2175-14/ LTC2174-14/LTC2173-14
TiMing characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS SPI Port Timing (Note 8)
tSCK SCK Period Write Mode l 40 ns Readback Mode, CSDO = 20pF, RPULLUP l 250 ns = 2k tS CS to SCK Setup Time l 5 ns tH SCK to CS Setup Time l 5 ns tDS SDI Setup Time l 5 ns tDH SDI Hold Time l 5 ns tDO SCK Falling to SDO Valid Readback Mode, CSDO = 20pF, RPULLUP l 125 ns = 2k
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 7:
Offset error is the offset voltage measured from –0.5 LSB when may cause permanent damage to the device. Exposure to any Absolute the output code flickers between 00 0000 0000 0000 and 11 1111 1111 Maximum Rating condition for extended periods may affect device 1111 in 2’s complement output mode. reliability and lifetime.
Note 8:
Guaranteed by design, not subject to test.
Note 2:
All voltage values are with respect to GND with GND and OGND
Note 9:
VDD = OVDD = 1.8V, fSAMPLE = 125MHz (LTC2175), 105MHz shorted (unless otherwise noted). (LTC2174), or 80MHz (LTC2173), 2-lane output mode, ENC+ = single-
Note 3:
When these pin voltages are taken below GND or above VDD, they ended 1.8V square wave, ENC– = 0V, input range = 2VP-P with differential will be clamped by internal diodes. This product can handle input currents drive, unless otherwise noted. The supply current and power dissipation of greater than 100mA below GND or above VDD without latchup. specifications are totals for the entire chip, not per channel.
Note 4:
When these pin voltages are taken below GND they will be
Note 10:
Recommended operating conditions. clamped by internal diodes. When these pin voltages are taken above VDD
Note 11:
The maximum sampling frequency depends on the speed grade they will not be clamped by internal diodes. This product can handle input of the part and also which serialization mode is used. The maximum serial currents of greater than 100mA below GND without latchup. data rate is 1000Mbps so tSER must be greater than or equal to 1ns.
Note 5:
VDD = OVDD = 1.8V, fSAMPLE = 125MHz (LTC2175), 105MHz
Note 12:
Near-channel crosstalk refers to Ch. 1 to Ch.2, and Ch.3 to Ch.4. (LTC2174), or 80MHz (LTC2173), 2-lane output mode, differential ENC+/ Far-channel crosstalk refers to Ch.1 to Ch.3, Ch.1 to Ch.4, Ch.2 to Ch.3, and ENC– = 2VP-P sine wave, input range = 2VP-P with differential drive, unless Ch.2 to Ch.4. 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. 21754314fa 7 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Converter Characteristics Analog Input Dynamic Accuracy Internal Reference Characteristics Digital Inputs and Outputs Power Requirements Timing Characteristics Timing Diagrams Typical Performance Characteristics Pin Functions Functional Block Diagram Applications Information Typical Applications Package Description Revision History Related Parts