Datasheet LTC2327-18 (Analog Devices) - 3

LTC2327-18
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V + IN Absolute Input Range (IN+) (Note 5) l –2.5 • VREFBUF – 0.5 2.5 • VREFBUF + 0.5 V V – IN Absolute Input Range (IN–) (Note 5) l –0.5 0.5 V V + – + – IN – VIN Input Differential Voltage Range VIN = VIN – VIN l –2.5 • VREFBUF 2.5 • VREFBUF V IIN Analog Input Current l –7.8 4.8 mA CIN Analog Input Capacitance 5 pF RIN Analog Input Resistance 2.083 kΩ CMRR Input Common Mode Rejection Ratio fIN = 250kHz 66 dB
converTer characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution l 18 Bits No Missing Codes l 18 Bits Transition Noise 1.6 LSBRMS INL Integral Linearity Error (Note 6) l –5 ±1 5 LSB DNL Differential Linearity Error l –1 ±0.1 1.25 LSB BZE Bipolar Zero-Scale Error (Note 7) l –30 0 30 LSB Bipolar Zero-Scale Error Drift 0.01 LSB/°C FSE Bipolar Full-Scale Error VREFBUF = 4.096V (REFBUF Overdriven) l –125 125 LSB (Notes 7, 9) REFIN = 2.048V (Note 7) l –150 150 LSB Bipolar Full-Scale Error Drift ±0.5 ppm/°C
DynaMic accuracy The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C and AIN = –1dBFS. (Notes 4, 8) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SINAD Signal-to-(Noise + Distortion) Ratio ±6.25V Range, fIN = 2kHz, REFIN = 1.25V l 87.6 91 dB ±10.24V Range, fIN = 2kHz, REFIN = 2.048V l 91 95 dB ±12.5V Range, fIN = 2kHz, REFBUF = 5V l 92 96.5 dB SNR Signal-to-Noise Ratio ±6.25V Range, fIN = 2kHz, REFIN = 1.25V l 88 91.5 dB ±10.24V Range, fIN = 2kHz, REFIN = 2.048V l 92 95 dB ±12.5V Range, fIN = 2kHz, REFBUF = 5V l 94 97 dB THD Total Harmonic Distortion ±6.25V Range, fIN = 2kHz, REFIN = 1.25V l –108 –98 dB ±10.24V Range, fIN = 2kHz, REFIN = 2.048V l –111 –98 dB ±12.5V Range, fIN = 2kHz, REFBUF = 5V l –106 –96 dB SFDR Spurious Free Dynamic Range ±6.25V Range, fIN = 2kHz, REFIN = 1.25V l 98 110 dB ±10.24V Range, fIN = 2kHz, REFIN = 2.048V l 98 113 dB ±12.5V Range, fIN = 2kHz, REFBUF = 5V l 96 108 dB –3dB Input Linear Bandwidth 7 MHz Aperture Delay 500 ps 232718fb For more information www.linear.com/LTC2327-18 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Reference Buffer Characteristics Digital Inputs and Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Revision History Typical Application Related Parts