Datasheet AD7896 (Analog Devices) - 3

AD7896–SPECIFICATIONS (VDD = 2.7 V to 5.5 V, AGND = DGND = 0 V. All specifications TMIN to TMAX, unless otherwise noted.) Test Conditions/ Parameter A Version1 B Version J Version S Version Unit Comments
DYNAMIC PERFORMANCE 2 Signal-to-(Noise + Distortion) Ratio3 @ 25°C 70 70 70 typ 70 dB min fIN = 10 kHz Sine Wave, fSAMPLE = 100 kHz TMIN to TMAX 70 dB min Total Harmonic Distortion (THD)3 –77 –77 –80 typ –77 dB max fIN = 10 kHz Sine Wave, fSAMPLE = 100 kHz Peak Harmonic or Spurious Noise3 –80 –80 –80 typ dB max fIN = 10 kHz Sine Wave, fSAMPLE = 100 kHz Intermodulation Distortion (IMD)3 fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 100 kHz Second Order Terms –77 –77 –80 typ –77 dB max Third Order Terms –80 –80 –80 typ –80 dB max DC ACCURACY Resolution 12 12 12 12 Bits Minimum Resolution for Which No Missing Codes Are Guaranteed 12 12 12 12 Bits Relative Accuracy3 ±1 ±1/2 ±1 ±1 LSB max Differential Nonlinearity3 ±1 ±1 ±1 ±1 LSB max Positive Full-Scale Error3 ±3 ±1.5 ±3 ±3 LSB max Unipolar Offset Error ±4 ±4 ±5 ±4 LSB max VDD = 5 V ± 10% ±4 ±3 ±5 ±4 LSB max VDD = 2.7 V to 3.6 V ANALOG INPUT Input Voltage Range 0 to +VDD 0 to +VDD 0 to +VDD 0 to +VDD V Input Current ±2 ±2 ±2 ±5 µA max LOGIC INPUTS Input High Voltage, VINH 2.0 2.0 2.0 2.0 V min VDD = 2.7 V to 3.6 V 2.4 2.4 2.4 2.4 VDD = 5 V ± 10% Input Low Voltage, VINL 0.8 0.8 0.8 0.8 V max Input Current, I ± IN 10 ±10 ±10 ±10 µA max VIN = 0 V to VDD Input Capacitance, C 4 IN 10 10 10 10 pF max LOGIC OUTPUTS Output High Voltage, VOH 2.4 2.4 2.4 2.4 V min ISOURCE = 400 ␮A Output Low Voltage, VOL 0.4 0.4 0.4 0.4 V max ISINK = 1.6 mA Output Coding Straight (Natural) Binary CONVERSION RATE Conversion Time Mode 1 Operation 8 8 8 8.5 µs max Mode 2 Operation5 14 14 14 14.5 µs max Track-and-Hold Acquisition Time3 1.5 1.5 1.5 1.5 µs max –2– Rev. D Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS SPECIFICATIONS TIMING CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION PIN FUNCTION DESCRIPTIONS TERMINOLOGY Relative Accuracy Differential Nonlinearity Unipolar Offset Error Positive Full-Scale Error Track-and-Hold Acquisition Time Signal-to-(Noise + Distortion) Ratio Total Harmonic Distortion Peak Harmonic or Spurious Noise Intermodulation Distortion CONVERTER DETAILS CIRCUIT DESCRIPTION Analog Input Section Track-and-Hold Section Timing and Control OPERATING MODES Mode 1 Operation (High Sampling Performance) Mode 2 Operation (Auto Sleep after Conversion) Serial Interface MICROPROCESSOR/MICROCONTROLLER INTERFACE AD7896–8051 Interface AD7896–68HC11/L11 Interface AD7896–ADSP-2103/ADSP-2105 Interface AD7896–DSP56002/L002 Interface AD7896 PERFORMANCE Linearity Noise Dynamic Performance (Mode 1 Only) Effective Number of Bits Power Considerations OUTLINE DIMENSIONS ORDERING GUIDE Revision History