Datasheet LTC2152-14, LTC2151-14, LTC2150-14 (Analog Devices) - 5

LTC2152-14/ LTC2151-14/LTC2150-14
DIGITAL INPUTS AND OUTPUTS 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 DIGITAL DATA OUTPUTS
VOD Differential Output Voltage 100Ω Differential Load, 3.5mA Mode l 247 350 454 mV 100Ω Differential Load, 1.75mA Mode l 125 175 250 mV VOS Common Mode Output Voltage 100Ω Differential Load, 3.5mA Mode l 1.125 1.250 1.375 V 100Ω Differential Load, 1.75mA Mode l 1.125 1.250 1.375 V RTERM On-Chip Termination Resistance Termination Enabled, OVDD = 1.8V 100 Ω
TIMING CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) LTC2152-14 LTC2151-14 LTC2150-14 SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
fS Sampling Frequency (Note 9) l 10 250 10 210 10 170 MHz tL ENC Low Time (Note 8) Duty Cycle Stabilizer Off l 1.9 2 50 2.26 2.38 50 2.79 2.94 50 ns Duty Cycle Stabilizer On l 1.5 2 50 1.5 2.38 50 1.5 2.94 50 ns tH ENC High Time (Note 8) Duty Cycle Stabilizer Off l 1.9 2 50 2.26 2.38 50 2.79 2.94 50 ns Duty Cycle Stabilizer On l 1.5 2 50 1.5 2.38 50 1.5 2.94 50 ns
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS DIGITAL DATA OUTPUTS
tD ENC to Data Delay CL = 5pF (Note 8) l 1.7 2 2.3 ns tC ENC to CLKOUT Delay CL = 5pF (Note 8) l 1.3 1.6 2 ns tSKEW DATA to CLKOUT Skew tD – tC (Note 8) l 0.3 0.4 0.55 ns Pipeline Latency 6 6 Cycles
SPI Port Timing (Note 8)
tSCK SCK Period Write Mode, CSDO = 20pF 40 ns Readback Mode RPULLUP = 2k, CSDO = 20pF 250 ns tS CS to SCK Set-Up Time l 5 ns tH SCK to CS Hold Time l 5 ns tDS SDI Set-Up Time l 5 ns tDH SDI Hold Time l 5 ns tDO SCK Falling to SDO Valid Readback Mode RPULLUP = 2k, CSDO = 20pF l 125 ns
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 5:
VDD = OVDD = 1.8V, fSAMPLE = 250MHz (LTC2152), may cause permanent damage to the device. Exposure to any Absolute 210MHz (LTC2151), or 170MHz (LTC2150), LVDS outputs, differential Maximum Rating condition for extended periods may affect device ENC+/ENC– = 2VP-P sine wave, input range = 1.5VP-P with differential reliability and lifetime. drive, unless otherwise noted.
Note 2:
All voltage values are with respect to GND with GND and OGND
Note 6:
Integral nonlinearity is defined as the deviation of a code from a shorted (unless otherwise noted). best fit straight line to the transfer curve. The deviation is measured from
Note 3:
When these pin voltages are taken below GND or above VDD, they the center of the quantization band. will be clamped by internal diodes. This product can handle input currents
Note 7:
Offset error is the offset voltage measured from –0.5LSB when the of greater than 100mA below GND or above VDD without latchup. output code flickers between 00 0000 0000 0000 and 11 1111 1111 1111
Note 4:
When these pin voltages are taken below GND they will be in 2’s complement output mode. 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
Note 8:
Guaranteed by design, not subject to test. currents of greater than 100mA below GND without latchup.
Note 9:
Recommended operating conditions. 21521014fa For more information www.linear.com/LTC2152-14 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Converter Characteristics Analog Input Dynamic Accuracy Internal Reference Characteristics Power Requirements Digital Inputs And Outputs Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagrams Applications Information Typical Applications Package Description Typical Application Related Parts