Datasheet LTC2372-18 (Analog Devices) - 3

LTC2372-18
e lecTrical 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 (CH0 to CH7) (Note 5) l –0.1 VREFBUF + 0.1 V V – IN Absolute Input Range Fully Differential (Note 5) l –0.1 VREFBUF + 0.1 V (CH0 to CH7, COM) Pseudo-Differential Unipolar (Note 5) l –0.1 0 0.1 V Pseudo-Differential Bipolar (Note 5) l VREFBUF/2 – 0.1 VREFBUF/2 VREFBUF/2 + 0.1 V V + – IN – VIN Input Differential Voltage Range Fully Differential l –VREFBUF VREFBUF V Pseudo-Differential Unipolar l 0 VREFBUF V Pseudo-Differential Bipolar l –VREFBUF/2 VREFBUF/2 V VCM Common Mode Input Range Pseudo-Differential Bipolar and Fully Differential (Note 6) l –VREFBUF/2 – 0.1 VREFBUF/2 VREFBUF/2 + 0.1 V IIN Analog Input Leakage Current l –1 1 µA CIN Analog Input Capacitance Sample Mode 75 pF Hold Mode 5 pF CMRR Input Common Mode Rejection Ratio Fully Differential, fIN = 250kHz 71 dB Pseudo-Differential Unipolar, fIN = 250kHz 72 dB Pseudo-Differential Bipolar, fIN = 250kHz 73 dB
c onverTer 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 Fully Differential 0.85 LSBRMS Pseudo-Differential Unipolar 1.5 LSBRMS Pseudo-Differential Bipolar 1.5 LSBRMS INL Integral Linearity Error Fully Differential (Note 7) l –2 ±0.5 2 LSB Pseudo-Differential Unipolar (Note 7) l –2.75 ±0.8 2.75 LSB Pseudo-Differential Bipolar (Note 7) l –2.75 ±0.8 2.75 LSB DNL Differential Linearity Error Fully Differential (Note 6) l –0.9 ±0.25 0.9 LSB Pseudo-Differential Unipolar (Note 6) l –0.9 ±0.25 0.9 LSB Pseudo-Differential Bipolar (Note 6) l –0.9 ±0.25 0.9 LSB ZSE Zero-Scale Error Fully Differential (Note 8) l –15 ±2 15 LSB Pseudo-Differential Unipolar (Note 8) l –30 ±2 30 LSB Pseudo-Differential Bipolar (Note 8) l –30 ±2 30 LSB Zero-Scale Error Drift Fully Differential 20 mLSB/°C Pseudo-Differential Unipolar 30 mLSB/°C Pseudo-Differential Bipolar 30 mLSB/°C Zero-Scale Error Match Fully Differential l –18 ±2 18 LSB Pseudo-Differential Unipolar l –24 ±4 24 LSB Pseudo-Differential Bipolar l –28 ±4 28 LSB FSE Full-Scale Error Fully Differential REFBUF = 4.096V (REFBUF Overdriven) (Notes 8, 9) l –50 ±7 50 LSB REFIN = 2.048V (REFIN Overdriven) (Note 8) l –100 ±11 100 LSB Pseudo-Differential Unipolar REFBUF = 4.096V (REFBUF Overdriven) (Notes 8, 9) l –75 ±5 75 LSB REFIN = 2.048V (REFIN Overdriven) (Note 8) l –200 ±14 200 LSB Pseudo-Differential Bipolar REFBUF = 4.096V (REFBUF Overdriven) (Notes 8, 9) l –50 ±8 50 LSB REFIN = 2.048V (REFIN Overdriven) (Note 8) l –120 ±12 120 LSB 237218f For more information www.linear.com/LTC2372-18 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Reference Buffer Characteristics Digital Inputs and Digital Outputs Power Requirements ADC Timing Characteristics Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Timing Diagrams Board Layout Schematics Package Description Typical Application Related Parts