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AD7895AR-10 датащи(PDF) 2 Page - Analog Devices |
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AD7895AR-10 датащи(HTML) 2 Page - Analog Devices |
2 / 12 page –2– REV. 0 AD7895–SPECIFICATIONS Parameter A Versionsl B Versions Units Test Conditions/Comments DYNAMIC PERFORMANCE 2 Signal to (Noise + Distortion) Ratio 3 @ +25 °C 70 70 dB min fIN = 50 kHz Sine Wave, fSAMPLE = 200 kHz TMIN to TMAX 70 70 dB min Total Harmonic Distortion (THD) 3 –78 –78 dB max fIN = 50 kHz Sine Wave, fSAMPLE = 200 kHz, Typically –87 dB Peak Harmonic or Spurious Noise 3 –89 –89 dB typ fIN = 50 kHz Sine Wave, fSAMPLE = 200 kHz Intermodulation Distortion (IMD) 3 fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 200 kHz 2nd Order Terms –87 –87 dB typ 3rd Order Terms –87 –87 dB typ DC ACCURACY Resolution 12 12 Bits Minimum Resolution for which No Missing Codes are Guaranteed 12 12 Bits Relative Accuracy 3 ±1 ±1 LSB max Typically 0.4 LSB Differential Nonlinearity 3 ±1 ±1 LSB max Positive Full-Scale Error 3 ±3 ±2 LSB max AD7895-2 Unipolar Offset Error ±3 ±2 LSB max AD7895-10, AD7895-3 Only Negative Full-Scale Error 3 ±3 ±2 LSB max Bipolar Zero Error ±4 ±3 LSB max ANALOG INPUT AD7895-10 Input Voltage Range ±10 ±10 Volts Input Resistance 24 24 k Ω min AD7895-3 Input Voltage Range ±2.5 ±2.5 Volts Input Resistance 9 9 k Ω min AD7895-2 Input Voltage Range 0 to +2.5 0 to +2.5 Volts Input Current 500 500 nA max REFERENCE INPUT REF IN Input Voltage Range 2.375/2.625 2.375/2.625 V min/V max 2.5 V ± 5% Input Current 1 1 µA max Input Capacitance 3 10 10 pF max LOGIC INPUTS Input High Voltage, VINH 2.4 2.4 V min VDD = 5 V ± 5% Input Low Voltage, VINL 0.8 0.8 V max VDD = 5 V ± 5% Input Current, IIN ±10 ±10 µA max VIN = 0 V to VDD Input Capacitance, CIN 4 10 10 pF ax LOGIC OUTPUTS Output High Voltage, VOH 4.0 4.0 V min ISOURCE = 200 µA Output Low Voltage, VOL 0.4 0.4 V max ISINK = 1.6 mA Output Coding AD7895-10, AD7895-3 2s Complement AD7895-2 Straight (Natural) Binary CONVERSION RATE Conversion Time Mode 1 Operation 3.8 3.8 µs max Mode 2 Operation 5 9.8 9.8 µs max Track/Hold Acquisition Time3 0.5 0.5 µs max POWER REQUIREMENTS VDD +5 +5 V nom ±5% for Specified Performance IDD 4 4 mA max Digital Inputs @ VDD, VDD = 5 V ± 5% Power Dissipation 20 20 mW max Typically 16 mW Power-Down Mode IDD @ +25°C5 5 µA max Digital Inputs @ GND, VDD = 5 V ± 5% TMIN to TMAX 10 10 µA max Digital Inputs @ GND, VDD = 5 V ± 5% Power Dissipation @ +25 °C25 25 µW max NOTES 1Temperature ranges are as follows: A, B Versions: –40 °C to +85°C. 2Applies to Mode 1 operation. See section on “Operating Modes.” 3See Terminology. 4Sample tested @ +25 °C to ensure compliance. 5This 9.8 µs includes the “wake-up” time from standby. This “wake-up” time is timed from the rising edge of CONVST, whereas conversion is timed from the falling edge of CONVST, for narrow CONVST pulse width the conversion time is effectively the “wake-up” time plus conversion time hence 9.8 µs. This can be seen from Figure 3. Note that if the CONVST pulse width is greater than 6 µs then the effective conversion time will increase beyond 9.8 µs. Specifications subject to change without notice. (VDD = +5 V, GND = 0 V, REF IN = +2.5 V. All specifications TMIN to TMAX unless otherwise noted) |
Аналогичный номер детали - AD7895AR-10 |
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Аналогичное описание - AD7895AR-10 |
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