Datasheet AD7910, AD7920 (Analog Devices) - 4
| Hersteller | Analog Devices |
| Beschreibung | 250 kSPS, 12- Bit ADC in 6 Lead SC70 |
| Seiten / Seite | 24 / 4 — AD7910/AD7920. Parameter1. A Grade1, 2. Unit. Test Conditions/Comments. … |
| Revision | C |
| Dateiformat / Größe | PDF / 498 Kb |
| Dokumentensprache | Englisch |
AD7910/AD7920. Parameter1. A Grade1, 2. Unit. Test Conditions/Comments. AD7920. Table 2. Parameter1. A Grade ,. 1 2. B Grade1, 2
Modelllinie für dieses Datenblatt
Textversion des Dokuments
link to page 4 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 5 link to page 12
AD7910/AD7920 Parameter1 A Grade1, 2 Unit Test Conditions/Comments
Power Dissipation6 Normal Mode (Operational) 15 mW max VDD = 5 V, fSAMPLE = 250 kSPS 4.2 mW max VDD = 3 V, fSAMPLE = 250 kSPS Full Power-Down 5 μW max VDD = 5 V 3 μW max VDD = 3 V 1 Temperature range from −40°C to +85°C. 2 Operational from VDD = 2.0 V, with input high voltage (VINH) 1.8 V min. 3 See the Terminology section. 4 SC70 values guaranteed by characterization. 5 Guaranteed by characterization. 6 See the Power vs. Throughput Rate section.
AD7920
VDD = 2.35 V to 5.25 V, fSCLK = 5 MHz, fSAMPLE = 250 kSPS, TA = TMIN to TMAX, unless otherwise noted.
Table 2. Parameter1 A Grade , 1 2 B Grade1, 2 Unit Test Conditions/Comments
DYNAMIC PERFORMANCE fIN = 100 kHz sine wave Signal-to-Noise + Distortion (SINAD)3 70 70 dB min VDD = 2.35 V to 3.6 V, TA = 25°C 69 69 dB min VDD = 2.4 V to 3.6 V 71.5 71.5 dB typ VDD = 2.35 V to 3.6 V 69 69 dB min VDD = 4.75 V to 5.25 V, TA = 25°C 68 68 dB min VDD = 4.75 V to 5.25 V Signal-to-Noise Ratio (SNR)3 71 71 dB min VDD = 2.35 V to 3.6 V, TA = 25°C 70 70 dB min VDD = 2.4 V to 3.6 V 70 70 dB min VDD = 4.75 V to 5.25 V, TA = 25°C 69 69 dB min VDD = 4.75 V to 5.25 V Total Harmonic Distortion (THD)3 −80 −80 dB typ Peak Harmonic or Spurious Noise (SFDR)3 −82 −82 dB typ Intermodulation Distortion (IMD)3 Second-Order Terms −84 −84 dB typ fa = 100.73 kHz, fb = 90.72 kHz Third-Order Terms −84 −84 dB typ fa = 100.73 kHz, fb = 90.72 kHz Aperture Delay 10 10 ns typ Aperture Jitter 30 30 ps typ Full Power Bandwidth 13.5 13.5 MHz typ @ 3 dB 2 2 MHz typ @ 0.1 dB DC ACCURACY B Grade4 Resolution 12 12 Bits Integral Nonlinearity3 ±1.5 LSB max ± 0.75 LSB typ Differential Nonlinearity −0.9/+1.5 LSB max Guaranteed no missed codes to 12 bits ±0.75 LSB typ Offset Error3, 5 ±1.5 LSB max ±1.5 ±0.2 LSB typ Gain Error3, 5 ±1.5 LSB max ±1.5 ±0.5 LSB typ Total Unadjusted Error (TUE)3, 5 ±2 LSB max ANALOG INPUT Input Voltage Ranges 0 to VDD 0 to VDD V DC Leakage Current ±0.5 ±0.5 μA max Input Capacitance 20 20 pF typ Track-and-hold in track, 6 pF typ when in hold Rev. C | Page 4 of 24 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS SPECIFICATIONS AD7910 AD7920 TIMING SPECIFICATIONS TIMING EXAMPLES TIMING EXAMPLE 1 TIMING EXAMPLE 2 ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY CIRCUIT INFORMATION CONVERTER OPERATION ADC TRANSFER FUNCTION TYPICAL CONNECTION DIAGRAM ANALOG INPUT DIGITAL INPUTS MODES OF OPERATION NORMAL MODE POWER-DOWN MODE POWER-UP TIME POWER VS. THROUGHPUT RATE SERIAL INTERFACE MICROPROCESSOR INTERFACING AD7910/AD7920 TO TMS320C541 INTERFACE AD7910/AD7920 TO ADSP-218x AD7910/AD7920 TO DSP563xx INTERFACE APPLICATION HINTS GROUNDING AND LAYOUT EVALUATING PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE
AD7910/AD7920 Parameter1 A Grade1, 2 Unit Test Conditions/Comments
Power Dissipation6 Normal Mode (Operational) 15 mW max VDD = 5 V, fSAMPLE = 250 kSPS 4.2 mW max VDD = 3 V, fSAMPLE = 250 kSPS Full Power-Down 5 μW max VDD = 5 V 3 μW max VDD = 3 V 1 Temperature range from −40°C to +85°C. 2 Operational from VDD = 2.0 V, with input high voltage (VINH) 1.8 V min. 3 See the Terminology section. 4 SC70 values guaranteed by characterization. 5 Guaranteed by characterization. 6 See the Power vs. Throughput Rate section.
AD7920
VDD = 2.35 V to 5.25 V, fSCLK = 5 MHz, fSAMPLE = 250 kSPS, TA = TMIN to TMAX, unless otherwise noted.
Table 2. Parameter1 A Grade , 1 2 B Grade1, 2 Unit Test Conditions/Comments
DYNAMIC PERFORMANCE fIN = 100 kHz sine wave Signal-to-Noise + Distortion (SINAD)3 70 70 dB min VDD = 2.35 V to 3.6 V, TA = 25°C 69 69 dB min VDD = 2.4 V to 3.6 V 71.5 71.5 dB typ VDD = 2.35 V to 3.6 V 69 69 dB min VDD = 4.75 V to 5.25 V, TA = 25°C 68 68 dB min VDD = 4.75 V to 5.25 V Signal-to-Noise Ratio (SNR)3 71 71 dB min VDD = 2.35 V to 3.6 V, TA = 25°C 70 70 dB min VDD = 2.4 V to 3.6 V 70 70 dB min VDD = 4.75 V to 5.25 V, TA = 25°C 69 69 dB min VDD = 4.75 V to 5.25 V Total Harmonic Distortion (THD)3 −80 −80 dB typ Peak Harmonic or Spurious Noise (SFDR)3 −82 −82 dB typ Intermodulation Distortion (IMD)3 Second-Order Terms −84 −84 dB typ fa = 100.73 kHz, fb = 90.72 kHz Third-Order Terms −84 −84 dB typ fa = 100.73 kHz, fb = 90.72 kHz Aperture Delay 10 10 ns typ Aperture Jitter 30 30 ps typ Full Power Bandwidth 13.5 13.5 MHz typ @ 3 dB 2 2 MHz typ @ 0.1 dB DC ACCURACY B Grade4 Resolution 12 12 Bits Integral Nonlinearity3 ±1.5 LSB max ± 0.75 LSB typ Differential Nonlinearity −0.9/+1.5 LSB max Guaranteed no missed codes to 12 bits ±0.75 LSB typ Offset Error3, 5 ±1.5 LSB max ±1.5 ±0.2 LSB typ Gain Error3, 5 ±1.5 LSB max ±1.5 ±0.5 LSB typ Total Unadjusted Error (TUE)3, 5 ±2 LSB max ANALOG INPUT Input Voltage Ranges 0 to VDD 0 to VDD V DC Leakage Current ±0.5 ±0.5 μA max Input Capacitance 20 20 pF typ Track-and-hold in track, 6 pF typ when in hold Rev. C | Page 4 of 24 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS SPECIFICATIONS AD7910 AD7920 TIMING SPECIFICATIONS TIMING EXAMPLES TIMING EXAMPLE 1 TIMING EXAMPLE 2 ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY CIRCUIT INFORMATION CONVERTER OPERATION ADC TRANSFER FUNCTION TYPICAL CONNECTION DIAGRAM ANALOG INPUT DIGITAL INPUTS MODES OF OPERATION NORMAL MODE POWER-DOWN MODE POWER-UP TIME POWER VS. THROUGHPUT RATE SERIAL INTERFACE MICROPROCESSOR INTERFACING AD7910/AD7920 TO TMS320C541 INTERFACE AD7910/AD7920 TO ADSP-218x AD7910/AD7920 TO DSP563xx INTERFACE APPLICATION HINTS GROUNDING AND LAYOUT EVALUATING PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE