Datasheet LTC2348-18 (Analog Devices) - 4

LTC2348-18
Dyna Mic accuracy The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. AIN = –1dBFS. (Notes 9, 13) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SINAD Signal-to-(Noise + SoftSpans 7 and 6: ±10.24V and ±10V Ranges, fIN = 2kHz l 93.0 96.5 dB Distortion) Ratio SoftSpans 5 and 4: 0V to 10.24V and 0V to 10V Ranges, fIN = 2kHz l 87.6 90.6 dB SoftSpans 3 and 2: ±5.12V and ±5V Ranges, fIN = 2kHz l 90.0 93.2 dB SoftSpan 1: 0V to 5.12V Range, fIN = 2kHz l 84.2 87.3 dB SNR Signal-to-Noise Ratio SoftSpans 7 and 6: ±10.24V and ±10V Ranges, fIN = 2kHz l 93.7 96.7 dB SoftSpans 5 and 4: 0V to 10.24V and 0V to 10V Ranges, fIN = 2kHz l 87.7 90.7 dB SoftSpans 3 and 2: ±5.12V and ±5V Ranges, fIN = 2kHz l 90.2 93.2 dB SoftSpan 1: 0V to 5.12V Range, fIN = 2kHz l 84.3 87.3 dB THD Total Harmonic Distortion SoftSpans 7 and 6: ±10.24V and ±10V Ranges, fIN = 2kHz l –109 –101 dB SoftSpans 5 and 4: 0V to 10.24V and 0V to 10V Ranges, fIN = 2kHz l –111 –104 dB SoftSpans 3 and 2: ±5.12V and ±5V Ranges, fIN = 2kHz l –113 –104 dB SoftSpan 1: 0V to 5.12V Range, fIN = 2kHz l –114 –103 dB SFDR Spurious Free Dynamic SoftSpans 7 and 6: ±10.24V and ±10V Ranges, fIN = 2kHz l 101 110 dB Range SoftSpans 5 and 4: 0V to 10.24V and 0V to 10V Ranges, fIN = 2kHz l 105 112 dB SoftSpans 3 and 2: ±5.12V and ±5V Ranges, fIN = 2kHz l 105 114 dB SoftSpan 1: 0V to 5.12V Range, fIN = 2kHz l 105 115 dB Channel-to-Channel One Channel Converting 18VP-P 200Hz Sine in ±10.24V Range, −109 dB Crosstalk Crosstalk to All Other Channels –3dB Input Bandwidth 7 MHz Aperture Delay 1 ns Aperture Delay Matching 150 ps Aperture Jitter 3 psRMS Transient Response Full-Scale Step, 0.005% Settling 360 ns
inTernal reFerence characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 9) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VREFIN Internal Reference Output Voltage 2.043 2.048 2.053 V Internal Reference Temperature Coefficient (Note 14) l 5 20 ppm/°C Internal Reference Line Regulation VDD = 4.75V to 5.25V 0.1 mV/V Internal Reference Output Impedance 20 kΩ VREFIN REFIN Voltage Range REFIN Overdriven (Note 7) 1.25 2.2 V
reFerence buFFer characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 9) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VREFBUF Reference Buffer Output Voltage REFIN Overdriven, VREFIN = 2.048V l 4.091 4.096 4.101 V REFBUF Voltage Range REFBUF Overdriven (Notes 7, 15) l 2.5 5 V REFBUF Input Impedance VREFIN = 0V, Buffer Disabled 13 kΩ IREFBUF REFBUF Load Current VREFBUF = 5V, 8 Channels Enabled (Notes 15, 16) l 1.5 1.9 mA VREFBUF = 5V, Acquisition or Nap Mode (Note 15) 0.39 mA 234818fa 4 For more information www.linear.com/LTC2348-18 Document Outline Features Description Applications 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 Typical Performance Characteristics Pin Functions Configuration Tables Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Revision History Typical Application Related Parts