Datasheet AD7911, AD7921 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | 2-Channel, 2.35 V to 5.25 V, 250 kSPS, 12-Bit A/D Converter |
| Pages / Page | 28 / 3 — AD7911/AD7921. SPECIFICATIONS AD7911 SPECIFICATIONS. Table 1. Parameter. … |
| Revision | A |
| File Format / Size | PDF / 355 Kb |
| Document Language | English |
AD7911/AD7921. SPECIFICATIONS AD7911 SPECIFICATIONS. Table 1. Parameter. A Grade1. Unit. Test Conditions/Comments
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AD7911/AD7921 SPECIFICATIONS AD7911 SPECIFICATIONS
Temperature range for A Grade from −40°C to +85°C. VDD = 2.35 V to 5.25 V, fSCLK = 5 MHz, fSAMPLE = 250 kSPS; TA = TMIN to TMAX, unless otherwise noted.
Table 1. Parameter A Grade1 Unit Test Conditions/Comments
DYNAMIC PERFORMANCE fIN = 100 kHz sine wave Signal-to- Noise and Distortion (SINAD)2 61 dB min Total Harmonic Distortion (THD)2 −71 dB max Peak Harmonic or Spurious Noise (SFDR)2 −72 dB max Intermodulation Distortion (IMD)2 Second-Order Terms −82 dB typ fa = 100.73 kHz, fb = 90.7 kHz Third-Order Terms −83 dB typ fa = 100.73 kHz, fb = 90.7 kHz Aperture Delay 10 ns typ Aperture Jitter 30 ps typ Channel-to-Channel Isolation2 −90 dB typ Full Power Bandwidth 8.5 MHz typ @ 3 dB 1.5 MHz typ @ 0.1 dB DC ACCURACY Resolution 10 Bits Integral Nonlinearity2 ±0.5 LSB max Differential Nonlinearity2 ±0.5 LSB max Guaranteed no missed codes to 10 bits Offset Error2 ±0.5 LSB max Offset Error Match2, 3 ±0.3 LSB max Gain Error2 ±0.5 LSB max Gain Error Match2, 3 ±0.3 LSB max Total Unadjusted Error (TUE)2 ±0.5 LSB max ANALOG INPUT Input Voltage Ranges 0 to VDD V DC Leakage Current ±0.3 μA max Input Capacitance 20 pF typ LOGIC INPUTS Input High Voltage, VINH 0.7 (VDD) V min 2.35 V ≤ VDD ≤ 2.7 V 2 V min 2.7 V < VDD ≤ 5.25 V Input Low Voltage, VINL 0.3 V max VDD = 2.35 V 0.2 (VDD) V max 2.35 V < VDD ≤ 2.7 V 0.8 V max 2.7 V < VDD ≤ 5.25 V Input Current, IIN, SCLK Pin ±0.3 μA max VIN = 0 V or VDD Input Current, IIN, CS Pin ±0.3 μA max Input Current, IIN, DIN Pin ±0.3 μA max Input Capacitance, CIN 5 pF max LOGIC OUTPUTS Output High Voltage, VOH VDD − 0.2 V min ISOURCE = 200 μA, VDD = 2.35 V to 5.25 V Output Low Voltage, VOL 0.2 V max ISINK = 200 μA Floating-State Leakage Current ±0.3 μA max Floating-State Output Capacitance3 5 pF max Output Coding Straight (natural) binary See notes at end of table. Rev. A | Page 3 of 28 Document Outline REVISION HISTORY SPECIFICATIONS AD7911 SPECIFICATIONS AD7921 SPECIFICATIONS TIMING SPECIFICATIONS TIMING DIAGRAMS TIMING EXAMPLES Timing Example 1 Timing Example 2 ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TERMINOLOGY TYPICAL PERFORMANCE CHARACTERISTICS CIRCUIT INFORMATION CONVERTER OPERATION ADC TRANSFER FUNCTION TYPICAL CONNECTION DIAGRAM ANALOG INPUT DIGITAL INPUTS DIN INPUT DOUT OUTPUT MODES OF OPERATION NORMAL MODE POWER-DOWN MODE POWER-UP TIME POWER VS. THROUGHPUT RATE SERIAL INTERFACE MICROPROCESSOR INTERFACING AD7911/AD7921 to TMS320C541 Interface AD7911/AD7921 to ADSP-218x AD7911/AD7921 to DSP563xx Interface APPLICATION HINTS GROUNDING AND LAYOUT OUTLINE DIMENSIONS ORDERING GUIDE
AD7911/AD7921 SPECIFICATIONS AD7911 SPECIFICATIONS
Temperature range for A Grade from −40°C to +85°C. VDD = 2.35 V to 5.25 V, fSCLK = 5 MHz, fSAMPLE = 250 kSPS; TA = TMIN to TMAX, unless otherwise noted.
Table 1. Parameter A Grade1 Unit Test Conditions/Comments
DYNAMIC PERFORMANCE fIN = 100 kHz sine wave Signal-to- Noise and Distortion (SINAD)2 61 dB min Total Harmonic Distortion (THD)2 −71 dB max Peak Harmonic or Spurious Noise (SFDR)2 −72 dB max Intermodulation Distortion (IMD)2 Second-Order Terms −82 dB typ fa = 100.73 kHz, fb = 90.7 kHz Third-Order Terms −83 dB typ fa = 100.73 kHz, fb = 90.7 kHz Aperture Delay 10 ns typ Aperture Jitter 30 ps typ Channel-to-Channel Isolation2 −90 dB typ Full Power Bandwidth 8.5 MHz typ @ 3 dB 1.5 MHz typ @ 0.1 dB DC ACCURACY Resolution 10 Bits Integral Nonlinearity2 ±0.5 LSB max Differential Nonlinearity2 ±0.5 LSB max Guaranteed no missed codes to 10 bits Offset Error2 ±0.5 LSB max Offset Error Match2, 3 ±0.3 LSB max Gain Error2 ±0.5 LSB max Gain Error Match2, 3 ±0.3 LSB max Total Unadjusted Error (TUE)2 ±0.5 LSB max ANALOG INPUT Input Voltage Ranges 0 to VDD V DC Leakage Current ±0.3 μA max Input Capacitance 20 pF typ LOGIC INPUTS Input High Voltage, VINH 0.7 (VDD) V min 2.35 V ≤ VDD ≤ 2.7 V 2 V min 2.7 V < VDD ≤ 5.25 V Input Low Voltage, VINL 0.3 V max VDD = 2.35 V 0.2 (VDD) V max 2.35 V < VDD ≤ 2.7 V 0.8 V max 2.7 V < VDD ≤ 5.25 V Input Current, IIN, SCLK Pin ±0.3 μA max VIN = 0 V or VDD Input Current, IIN, CS Pin ±0.3 μA max Input Current, IIN, DIN Pin ±0.3 μA max Input Capacitance, CIN 5 pF max LOGIC OUTPUTS Output High Voltage, VOH VDD − 0.2 V min ISOURCE = 200 μA, VDD = 2.35 V to 5.25 V Output Low Voltage, VOL 0.2 V max ISINK = 200 μA Floating-State Leakage Current ±0.3 μA max Floating-State Output Capacitance3 5 pF max Output Coding Straight (natural) binary See notes at end of table. Rev. A | Page 3 of 28 Document Outline REVISION HISTORY SPECIFICATIONS AD7911 SPECIFICATIONS AD7921 SPECIFICATIONS TIMING SPECIFICATIONS TIMING DIAGRAMS TIMING EXAMPLES Timing Example 1 Timing Example 2 ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TERMINOLOGY TYPICAL PERFORMANCE CHARACTERISTICS CIRCUIT INFORMATION CONVERTER OPERATION ADC TRANSFER FUNCTION TYPICAL CONNECTION DIAGRAM ANALOG INPUT DIGITAL INPUTS DIN INPUT DOUT OUTPUT MODES OF OPERATION NORMAL MODE POWER-DOWN MODE POWER-UP TIME POWER VS. THROUGHPUT RATE SERIAL INTERFACE MICROPROCESSOR INTERFACING AD7911/AD7921 to TMS320C541 Interface AD7911/AD7921 to ADSP-218x AD7911/AD7921 to DSP563xx Interface APPLICATION HINTS GROUNDING AND LAYOUT OUTLINE DIMENSIONS ORDERING GUIDE
