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ADS8342IPFBR Arkusz danych(PDF) 4 Page - Texas Instruments |
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ADS8342IPFBR Arkusz danych(HTML) 4 Page - Texas Instruments |
4 / 10 page ADS8342 SBAS277 – MAY 2003 www.ti.com 4 ELECTRICAL CHARACTERISTICS Over recommended operating free-air temperature range at –40 °C to +85°C, ±AVDD =±DVDD =±5V, BVDD = +5V, VREF = +2.5V, fCLK = 5MHz, and fSAMPLE = 250kSPS, unless otherwise noted. PARAMETER TEST CONDITIONS ADS8342I ADS8342IB UNIT PARAMETER TEST CONDITIONS MIN TYP(1) MAX MIN TYP(1) MAX UNIT Analog Input Full-scale range (FSR) AIN to Common –VREF +VREF : : V Input MUX on-resistance Common = AGND 500 : Ω Input capacitance Common = AGND 20 : pF Input leakage current Common = AGND ±0.3 : µA Full power bandwidth FS sinewave, –3dB 16 : MHz Voltage Accuracy Resolution 16 : Bits No missing code (NMC) 15 16 Bits Integral linearity error (INL) –6 ±3 +6 –4 ±2 +4 LSB Differential nonlinearity (DNL) –2 ±1 +2 –1 ±0.6 +1.5 LSB Bipolar zero (offset) error (VOS) AIN = Common = 0V –2 +2 –1 +1 mV Bipolar zero (offset) error drift (TCVOS) AIN = Common = 0V 1 : ppm/ °C Bipolar zero (offset) error match AIN = Common = 0V 0.150 1 : : mV Positive gain error (PGERR) AIN = VREF, Common = 0V –0.25 +0.25 : : % FSR Positive gain error drift (TCPGERR) AIN = VREF, Common = 0V 1.5 : ppm/ °C Positive gain error match AIN = VREF, Common = 0V 0.003 0.01 : : % FSR Negative gain error (NGERR) AIN = –VREF, Common = 0V –0.25 +0.25 : : % FSR Negative gain error drift (TCNGERR) AIN = –VREF, Common = 0V 1.5 : ppm/ °C Negative gain error match AIN = –VREF, Common = 0V 0.003 0.01 : : % FSR Sampling Dynamics Conversion time (tCONV) 500kHz ≤ fCLK ≤ 5MHz 3.4 34 : : µs Acquisition time (tACQ) fCLK = 5MHz 0.6 : : µs Throughput rate 250 : kHz Multiplexer settling time 150 : ns Aperture delay 8 : ns Aperture jitter 50 : ps AC Accuracy Total haromonic distortion (THD) VIN = ±2.5Vp–p at 10kHz –89 : dB Spurious-free dynamic range (SFDR) VIN = ±2.5Vp–p at 10kHz 92 : dB Signal-to-noise ratio (SNR) VIN = ±2.5Vp–p at 10kHz 86 : dB Signal-to-noise + distortion (SINAD) VIN = ±2.5Vp–p at 10kHz 84.6 : dB Channel-to-channel isolation(2) VIN = ±2.5Vp–p at 50kHz 95 : dB Effective number of bits (ENOB) 14 : Bits : Indicates the same specifications as the ADS8342I. (1) All typical values are at TA = +25°C. (2) Ensured by design. (3) Applies for 5.0V nominal supply: BVDD (min) = 4.5V and BVDD (max) = 5.5V. (4) Applies for 3.0V nominal supply: BVDD (min) = 2.7V and BVDD (max) = 3.6V. |
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