Datasheet AD7911, AD7921 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | 2-Channel, 2.35 V to 5.25 V, 250 kSPS, 12-Bit A/D Converter |
| 页数 / 页 | 28 / 5 — AD7911/AD7921. AD7921 SPECIFICATIONS. Table 2. Parameter A. Grade1. Unit. … |
| 修订版 | A |
| 文件格式/大小 | PDF / 355 Kb |
| 文件语言 | 英语 |
AD7911/AD7921. AD7921 SPECIFICATIONS. Table 2. Parameter A. Grade1. Unit. Test Conditions/Comments
该数据表的模型线
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AD7911/AD7921 AD7921 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 2. Parameter A Grade1 Unit Test Conditions/Comments
DYNAMIC PERFORMANCE fIN = 100 kHz sine wave Signal-to-Noise and Distortion (SINAD)2 70 dB min 72 dB typ Signal-to-Noise Ratio (SNR)2 71 dB min 72.5 dB typ Total Harmonic Distortion (THD)2 −81 dB typ Peak Harmonic or Spurious Noise (SFDR)2 −84 dB typ Intermodulation Distortion (IMD)2 Second-Order Terms −84 dB typ fa = 100.73 kHz, fb = 90.72 kHz Third-Order Term −86 dB typ fa = 100.73 kHz, fb = 90.72 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 12 Bits Integral Nonlinearity2 ±1.5 LSB max Differential Nonlinearity2 −0.9/+1.5 LSB max Guaranteed no missed codes to 12 bits Offset Error2 ±1.5 LSB max ±0.5 LSB typ Offset Error Match2, 3 ±0.5 LSB max Gain Error2 ± 2 LSB max ±0.3 LSB typ Gain Error Match2, 3 ±1 LSB max Total Unadjusted Error (TUE)2 ±1.5 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, C 3 IN 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 5 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 AD7921 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 2. Parameter A Grade1 Unit Test Conditions/Comments
DYNAMIC PERFORMANCE fIN = 100 kHz sine wave Signal-to-Noise and Distortion (SINAD)2 70 dB min 72 dB typ Signal-to-Noise Ratio (SNR)2 71 dB min 72.5 dB typ Total Harmonic Distortion (THD)2 −81 dB typ Peak Harmonic or Spurious Noise (SFDR)2 −84 dB typ Intermodulation Distortion (IMD)2 Second-Order Terms −84 dB typ fa = 100.73 kHz, fb = 90.72 kHz Third-Order Term −86 dB typ fa = 100.73 kHz, fb = 90.72 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 12 Bits Integral Nonlinearity2 ±1.5 LSB max Differential Nonlinearity2 −0.9/+1.5 LSB max Guaranteed no missed codes to 12 bits Offset Error2 ±1.5 LSB max ±0.5 LSB typ Offset Error Match2, 3 ±0.5 LSB max Gain Error2 ± 2 LSB max ±0.3 LSB typ Gain Error Match2, 3 ±1 LSB max Total Unadjusted Error (TUE)2 ±1.5 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, C 3 IN 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 5 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