Datasheet LTC1272 (Analog Devices) - 4

LTC1272
DYNAMIC ACCURACY (Note 4) fSAMPLE = 250kHz (LTC1272-3), 111kHz (LTC1272-8) LTC1272-XA/C SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
S/(N+D) Signal-to-Noise Plus Distortion Ratio 10kHz Input Signal 72 dB THD Total Harmonic Distortion (Up to 5th Harmonic) 10kHz Input Signal –82 dB Peak Harmonic or Spurious Noise 10kHz Input Signal –82 dB
ANALOG INPUT The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) LTC1272-XA/B/C SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Voltage Range 4.75V ≤ VDD ≤ 5.25V l 0 5 V IIN Input Current l 3.5 mA CIN Input Capacitance 50 pF tACQ Sample-and-Hold Acquisition Time l 0.45 1 µs
TIMING CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 8) LTC1272-XA/C SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
t1 CS to RD Setup Time l 0 ns t2 RD to BUSY Delay CL = 50pF 80 190 ns COM Grade l 230 ns t3 Data Access Time After RD↓ CL = 20pF 50 90 ns COM Grade l 110 ns CL = 100pF 70 125 ns COM Grade l 150 ns t4 RD Pulse Width t3 ns COM Grade l t3 ns t5 CS to RD Hold Time l 0 ns t6 Data Setup Time After BUSY 40 70 ns COM Grade l 90 ns t7 Bus Relinquish Time 20 30 75 ns COM Grade l 20 85 ns t8 HBEN to RD Setup Time l 0 ns t9 HBEN to RD Hold Time l 0 ns t10 Delay Between RD Operations l 200 ns t11 Delay Between Conversions 1 µs t12 Aperture Delay of Sample and Hold Jitter <50ps 25 ns t13 CLK to BUSY Delay 80 170 ns COM Grade l 220 ns tCONV Conversion Time l 12 13 CLK CYCLES 1272fc 4 For more information www.linear.com/1272 Document Outline FEATURES APPLICATIONS DESCRIPTION TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION CONVERTER CHARACTERISTICS INTERNAL REFERENCE CHARACTERISTICS DIGITAL AND DC ELECTRICAL CHARACTERISTICS DYNAMIC ACCURACY ANALOG INPUT TIMING CHARACTERISTICS PIN FUNCTIONS TYPICAL PERFORMANCE CHARACTERISTICS APPLICATIONS INFORMATION REVISION HISTORY PACKAGE DESCRIPTION