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ADS8361IDBQRG4 Datasheet(PDF) 3 Page - Texas Instruments |
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ADS8361IDBQRG4 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 29 page  ADS8361 3 SBAS230E www.ti.com PARAMETER CONDITIONS MIN TYP(1) MAX UNITS ANALOG INPUT Full-Scale Range(2) (FSR) +IN – (–IN) ±VREF V Operating Common-Mode Signal 2.2 2.8 V Input Switch Resistance –IN = VREF 20 Ω Input Capacitance –IN = VREF 25 pF Input Leakage Current –IN = VREF ±1nA Differential Input Switch Resistance 40 Ω Differential Input Capacitance 15 pF Common-Mode Rejection Ratio (CMRR) At DC 84 dB VIN = ±1.25VPP at 50kHz 80 dB DC ACCURACY Resolution 16 Bits No Missing Code (NMC) 14 Bits Integral Linearity Error (INL) ±3 ±8LSB(3) Integral Linearity Match Channel 0/1, Same A/D 4 LSB Differential Nonlinearity (DNL) +1.5(4) LSB Bipolar Offset Error (VOS)TA = –40°C to +85°C ±0.5 ±2mV TA = –40°C to +125°C ±0.5 ±2.5 mV Bipolar Offset Error Match Channel 0/1, Same A/D 0.5 1 mV Bipolar Offset Error Drift (TCVOS)0.4 ppm/°C Gain Error(6) (GERR) ±0.05 ±0.5 % Gain Error Match 0.05 0.15 % Gain Error Drift (TCGERR)20 ppm/°C Noise 60 μVrms Power-Supply Rejection Ratio (PSRR) 4.75V < AVDD < 5.25V, with –70 dB External Reference, at DC SAMPLING DYNAMICS Conversion Time per A/D (tCONV) 100kHz ≤ fCLK ≤ 10MHz 1.6 160 μs Acquisition Time (tAQ)fCLK = 10MHz 400 ns Throughout Rate 500 kSPS Aperture Delay 5ns Aperture Delay Matching 100 ps Aperture Jitter 50 ps Clock Frequency 0.1 10 MHz AC ACCURACY Total Harmonic Distortion (THD) VIN = ±2.5VPP at 10kHz –94 dB Spurious-Free Dynamic Range (SFDR) VIN = ±2.5VPP at 10kHz 94 dB Signal-to-Noise Ratio (SNR) VIN = ±2.5VPP at 10kHz 83 dB Signal-to-Noise + Distortion (SINAD) VIN = ±2.5VPP at 10kHz 83 dB Channel-to-Channel Isolation VIN = ±2.5VPP at 10kHz 96 dB VOLTAGE REFERENCE OUTPUT Reference Voltage Ouput (VOUT) 2.475 2.5 2.525 V Initial Accuracy ±1% Output Voltage Temperature Drift (dVOUT/dT) ±20 ppm/°C Output Voltage Noise f = 0.1Hz to 10Hz, CL = 10μF10 μVPP f = 10Hz to 10kHz, CL = 10μF12 μVrms Power-Supply Rejection Ratio (PSRR) 60 dB Output Current (IOUT)10 μA Short-Circuit Current (ISC)0.5 mA Turn On Settling Time to 0.1% at CL = 0 100 μs VOLTAGE REFERENCE INPUT Reference Voltage Input (VIN) 1.2 2.5 2.6 V Reference Input Resistance 100 MΩ Reference Input Capacitance 5pF Reference Input Current 1 μA ELECTRICAL CHARACTERISTICS Over recommended operating free-air temperature range at TA = –40°C to +125°C, AVDD = 5V, BVDD = 3V, VREF = internal +2.5V, fCLK = 10MHz, and fSAMPLE = 500kSPS, unless otherwise noted. NOTES: (1) All values are at TA = +25°C. (2) Ideal input span; does not include gain or offset error. (3) LSB means Least Significant Bit, with VREF equal to +2.5V; 1LSB = 76μV. (4) Specified for 14-bit no missing code. (5) Specified for 15-bit no missing code. (6) Measured relative to an ideal, full-scale input (+IN – (–IN)) of 4.9999V. Thus, gain error does not include the error of the internal voltage reference. ADS8361 |
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