Datasheet AD7923 (Analog Devices) - 4

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Data Sheet AD7923 SPECIFICATIONS
AVDD = VDRIVE = 2.7 V to 5.25 V, REFIN = 2.5 V, fSCLK = 20 MHz, TA = TMIN to TMAX, unless otherwise noted.
Table 1. Parameter B Version1 Unit Test Conditions/Comments
DYNAMIC PERFORMANCE fIN = 50 kHz sine wave, fSCLK = 20 MHz Signal-to-(Noise + Distortion) (SINAD)2 70 dB min @ 5 V, –40°C to +85°C 69 dB min @ 5 V, 85°C to 125°C, typ 70 dB 69 dB min @ 3 V typ 70 dB, –40°C to +125°C Signal-to-Noise (SNR)2 70 dB min Total Harmonic Distortion (THD)2 −77 dB max @ 5 V typ, −84 dB −73 dB max @ 3 V typ,−77 dB Peak Harmonic or Spurious Noise −78 dB max @ 5 V typ, −86 dB (SFDR)2 −76 dB max @ 3 V typ, −80 dB Intermodulation Distortion (IMD)2 fA = 40.1 kHz, fB = 41.5 kHz Second Order Terms −90 dB typ Third Order Terms −90 dB typ Aperture Delay 10 ns typ Aperture Jitter 50 ps typ Channel-to-Channel Isolation −85 dB typ fIN = 400 kHz Full Power Bandwidth 8.2 MHz typ @ 3 dB 1.6 MHz typ @ 0.1 dB DC ACCURACY2 Resolution 12 Bits Integral Nonlinearity ±1 LSB max Differential Nonlinearity −0.9/+1.5 LSB max Guaranteed no missed codes to 12 bits 0 V to REFIN Input Range Straight binary output coding Offset Error ±8 LSB max Typ ±0.5 LSB Offset Error Match ±0.5 LSB max Gain Error ±1.5 LSB max Gain Error Match ±0.5 LSB max 0 V to 2 × REFIN Input Range −REFIN to +REFIN biased about REFIN with twos complement output coding Positive Gain Error ±1.5 LSB max Positive Gain Error Match ±0.5 LSB max Zero-Code Error ±8 LSB max Typ ±0.8 LSB Zero-Code Error Match ±0.5 LSB max Negative Gain Error ±1 LSB max Negative Gain Error Match ±0.5 LSB max ANALOG INPUT Input Voltage Range 0 to REFIN V Range bit set to 1 0 to 2 × REFIN V Range bit set to 0, AVDD = 4.75 V to 5.25 V DC Leakage Current ±1 µA max Input Capacitance 20 pF typ REFERENCE INPUT REFIN Input Voltage 2.5 V ±1% specified performance DC Leakage Current ±1 µA max REFIN Input Impedance 36 kΩ typ fSAMPLE = 200 kSPS LOGIC INPUTS Input High Voltage, VINH 0.7 × VDRIVE V min Input Low Voltage, VINL 0.3 × VDRIVE V max Input Current, IIN ±1 µA max Typ 10 nA, VIN = 0 V or VDRIVE Input Capacitance, C 3 IN 10 pF max Rev. D | Page 3 of 24 Document Outline Specifications Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Description Typical Performance Characteristics Terminology Control Register Descriptions Sequencer Operation Theory of Operation Circuit Information Converter Operation Analog Input ADC Transfer Function Handling Bipolar Input Signals Typical Connection Diagram Analog Input Selection Digital Inputs VDRIVE Reference Modes of Operation Normal Mode (PM1 = PM0 = 1) Full Shutdown (PM1 = 1, PM0 = 0) Auto Shutdown (PM1 = 0, PM0 = 1) Powering Up the AD7923 Power vs. Throughput Rate Serial Interface Writing Between Conversions Microprocessor Interfacing AD7923-to-TMS320C541 AD7923-to-ADSP-21xx AD7923-to-DSP563xx Application Hints Grounding and Layout Outline Dimensions Ordering Guide Automotive Products