Datasheet AD7934-6 (Analog Devices) - 4
| Fabricante | Analog Devices |
| Descripción | 4-Channel, 625 kSPS, 12-Bit Parallel ADC with a Sequencer |
| Páginas / Página | 29 / 4 — AD7934-6. SPECIFICATIONS. Table 2. Parameter. Value1. Unit. Test … |
| Revisión | B |
| Formato / tamaño de archivo | PDF / 625 Kb |
| Idioma del documento | Inglés |
AD7934-6. SPECIFICATIONS. Table 2. Parameter. Value1. Unit. Test Conditions/Comments
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AD7934-6 SPECIFICATIONS
VDD = VDRIVE = 2.7 V to 5.25 V, internal/external VREF = 2.5 V, unless otherwise noted, fCLKIN = 10 MHz, fSAMPLE = 625 kSPS; T 1 A = TMIN to TMAX , unless otherwise noted. X
Table 2. Parameter Value1 Unit Test Conditions/Comments
DYNAMIC PERFORMANCE fIN = 50 kHz sine wave Signal-to-Noise + Distortion (SINAD)2 70 dB min Differential mode 68 dB min Single-ended mode Signal-to-Noise Ratio (SNR)2 71 dB min Differential mode 69 dB min Single-ended mode Total Harmonic Distortion (THD)2 −73 dB max −85 dB typ, differential mode −70 dB max −80 dB typ, single-ended mode Peak Harmonic or Spurious Noise (SFDR)2 −73 dB max −82 dB typ Intermodulation Distortion (IMD)2 fa = 30 kHz, fb = 50 kHz Second-Order Terms −86 dB typ Third-Order Terms −90 dB typ Channel-to-Channel Isolation −85 dB typ fIN = 50 kHz, fNOISE = 300 kHz Aperture Delay2 5 ns typ Aperture Jitter2 72 ps typ Full Power Bandwidth2 50 MHz typ @ 3 dB 10 MHz typ @ 0.1 dB DC ACCURACY Resolution 12 Bits Integral Nonlinearity2 ±1 LSB max Differential mode ±1.5 LSB max Single-ended mode Differential Nonlinearity2 Differential Mode ±0.95 LSB max Guaranteed no missed codes to 12 bits Single-Ended Mode −0.95/+1.5 LSB max Guaranteed no missed codes to 12 bits Single-Ended and Pseudo Differential Input Straight binary output coding Offset Error2 ±6 LSB max Offset Error Match2 ±1 LSB max Gain Error2 ±3 LSB max Gain Error Match2 ±1 LSB max Fully Differential Input Twos complement output coding Positive Gain Error2 ±3 LSB max Positive Gain Error Match2 ±1 LSB max Zero-Code Error2 ±6 LSB max Zero-Code Error Match2 ±1 LSB max Negative Gain Error2 ±3 LSB max Negative Gain Error Match2 ±1 LSB max ANALOG INPUT Single-Ended Input Range 0 to VREF V RANGE bit = 0 0 to 2 × VREF V RANGE bit = 1 Pseudo Differential Input Range VIN+ 0 to VREF V RANGE bit = 0 0 to 2 × VREF V RANGE bit = 1 VIN− −0.3 to +0.7 V typ VDD = 3 V −0.3 to +1.8 V typ VDD = 5 V Fully Differential Input Range3 VIN+ and VIN− VCM ± VREF/2 V VCM = VREF/2, RANGE bit = 0 VIN+ and VIN− VCM ± VREF V VCM = VREF, RANGE bit = 1 DC Leakage Current4 ±1 μA max Input Capacitance 45 pF typ When in track 10 pF typ When in hold Rev. B | Page 3 of 28 Document Outline FEATURES FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY CONTROL REGISTER SEQUENCER OPERATION Writing to the Control Register to Program the Sequencer CIRCUIT INFORMATION CONVERTER OPERATION ADC TRANSFER FUNCTION TYPICAL CONNECTION DIAGRAM ANALOG INPUT STRUCTURE ANALOG INPUT CONFIGURATIONS Single-Ended Mode Differential Mode Driving Differential Inputs Using an Op Amp Pair Pseudo Differential Mode ANALOG INPUT SELECTION Traditional Multichannel Operation (SEQ0 = SEQ1 = 0) Using the Sequencer: Consecutive Sequence (SEQ0 = SEQ1 = 1) REFERENCE Digital Inputs VDRIVE Input PARALLEL INTERFACE Reading Data from the AD7934-6 Writing Data to the AD7934-6 POWER MODES OF OPERATION Normal Mode (PM1 = PM0 = 0) Autoshutdown Mode (PM1 = 0; PM0 = 1) Autostandby Mode (PM1 = 1; PM0 = 0) Full Shutdown Mode (PM1 = 1; PM0 = 1) POWER vs. THROUGHPUT RATE MICROPROCESSOR INTERFACING AD7934-6 to ADSP-21xx Interface AD7934-6 to ADSP-21065L Interface AD7934-6 to TMS32020, TMS320C25, and TMS320C5x Interface AD7934-6 to 80C186 Interface APPLICATION HINTS GROUNDING AND LAYOUT EVALUATING THE AD7934-6 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE
AD7934-6 SPECIFICATIONS
VDD = VDRIVE = 2.7 V to 5.25 V, internal/external VREF = 2.5 V, unless otherwise noted, fCLKIN = 10 MHz, fSAMPLE = 625 kSPS; T 1 A = TMIN to TMAX , unless otherwise noted. X
Table 2. Parameter Value1 Unit Test Conditions/Comments
DYNAMIC PERFORMANCE fIN = 50 kHz sine wave Signal-to-Noise + Distortion (SINAD)2 70 dB min Differential mode 68 dB min Single-ended mode Signal-to-Noise Ratio (SNR)2 71 dB min Differential mode 69 dB min Single-ended mode Total Harmonic Distortion (THD)2 −73 dB max −85 dB typ, differential mode −70 dB max −80 dB typ, single-ended mode Peak Harmonic or Spurious Noise (SFDR)2 −73 dB max −82 dB typ Intermodulation Distortion (IMD)2 fa = 30 kHz, fb = 50 kHz Second-Order Terms −86 dB typ Third-Order Terms −90 dB typ Channel-to-Channel Isolation −85 dB typ fIN = 50 kHz, fNOISE = 300 kHz Aperture Delay2 5 ns typ Aperture Jitter2 72 ps typ Full Power Bandwidth2 50 MHz typ @ 3 dB 10 MHz typ @ 0.1 dB DC ACCURACY Resolution 12 Bits Integral Nonlinearity2 ±1 LSB max Differential mode ±1.5 LSB max Single-ended mode Differential Nonlinearity2 Differential Mode ±0.95 LSB max Guaranteed no missed codes to 12 bits Single-Ended Mode −0.95/+1.5 LSB max Guaranteed no missed codes to 12 bits Single-Ended and Pseudo Differential Input Straight binary output coding Offset Error2 ±6 LSB max Offset Error Match2 ±1 LSB max Gain Error2 ±3 LSB max Gain Error Match2 ±1 LSB max Fully Differential Input Twos complement output coding Positive Gain Error2 ±3 LSB max Positive Gain Error Match2 ±1 LSB max Zero-Code Error2 ±6 LSB max Zero-Code Error Match2 ±1 LSB max Negative Gain Error2 ±3 LSB max Negative Gain Error Match2 ±1 LSB max ANALOG INPUT Single-Ended Input Range 0 to VREF V RANGE bit = 0 0 to 2 × VREF V RANGE bit = 1 Pseudo Differential Input Range VIN+ 0 to VREF V RANGE bit = 0 0 to 2 × VREF V RANGE bit = 1 VIN− −0.3 to +0.7 V typ VDD = 3 V −0.3 to +1.8 V typ VDD = 5 V Fully Differential Input Range3 VIN+ and VIN− VCM ± VREF/2 V VCM = VREF/2, RANGE bit = 0 VIN+ and VIN− VCM ± VREF V VCM = VREF, RANGE bit = 1 DC Leakage Current4 ±1 μA max Input Capacitance 45 pF typ When in track 10 pF typ When in hold Rev. B | Page 3 of 28 Document Outline FEATURES FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY CONTROL REGISTER SEQUENCER OPERATION Writing to the Control Register to Program the Sequencer CIRCUIT INFORMATION CONVERTER OPERATION ADC TRANSFER FUNCTION TYPICAL CONNECTION DIAGRAM ANALOG INPUT STRUCTURE ANALOG INPUT CONFIGURATIONS Single-Ended Mode Differential Mode Driving Differential Inputs Using an Op Amp Pair Pseudo Differential Mode ANALOG INPUT SELECTION Traditional Multichannel Operation (SEQ0 = SEQ1 = 0) Using the Sequencer: Consecutive Sequence (SEQ0 = SEQ1 = 1) REFERENCE Digital Inputs VDRIVE Input PARALLEL INTERFACE Reading Data from the AD7934-6 Writing Data to the AD7934-6 POWER MODES OF OPERATION Normal Mode (PM1 = PM0 = 0) Autoshutdown Mode (PM1 = 0; PM0 = 1) Autostandby Mode (PM1 = 1; PM0 = 0) Full Shutdown Mode (PM1 = 1; PM0 = 1) POWER vs. THROUGHPUT RATE MICROPROCESSOR INTERFACING AD7934-6 to ADSP-21xx Interface AD7934-6 to ADSP-21065L Interface AD7934-6 to TMS32020, TMS320C25, and TMS320C5x Interface AD7934-6 to 80C186 Interface APPLICATION HINTS GROUNDING AND LAYOUT EVALUATING THE AD7934-6 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE