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ADS7815UG4 Datasheet(PDF) 3 Page - Texas Instruments |
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ADS7815UG4 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 16 page ADS7815 3 SBAS065B www.ti.com RESOLUTION 16 Bits ANALOG INPUT Voltage Range ±2.5V V Impedance 100 M Ω Capacitance 30 pF THROUGHPUT SPEED Conversion Cycle Acquire and Convert 4.0 µs Throughput Rate 250 kHz DC ACCURACY Integral Linearity Error ±4 LSB(1) No Missing Codes 15 Bits Transition Noise(2) 0.8 LSB Full Scale Error(3) ±0.1 % Full Scale Error Drift ±7 ppm/ °C Bipolar Zero Error ±2mV Bipolar Zero Error Drift ±2 ppm/ °C Power Supply Sensitivity +VS ±5%, –VS ±5% ±6LSB AC ACCURACY Spurious-Free Dynamic Range fIN = 100kHz 96 100 dB(4) Total Harmonic Distortion fIN = 100kHz –98 –94 dB Signal-to-(Noise+Distortion) fIN = 100kHz 82 dB –60dB Input 28 dB Signal-to-Noise fIN = 100kHz 82 dB Usable Bandwidth(5) 1MHz Aperture Delay 40 ns REFERENCE Internal Reference Voltage 2.45 2.5 2.55 V Internal Reference Source Current 1 µA External Reference Voltage Range 2.3 2.5 2.7 V External Reference Current Drain VREF = +2.5V 100 µA DIGITAL INPUTS Logic Levels VIL –0.3 +0.8 V VIH +2.8 +VS +0.3V V IIL ±10 µA IIH ±10 µA DIGITAL OUTPUTS Data Format Data Coding VOL ISINK = 1.6mA +0.4 V VOH ISOURCE = 200µA+4 V Leakage Current High-Z State, ±5 µA VOUT = 0V to VDIG Output Capacitance High-Z State 15 pF DIGITAL TIMING Bus Access Time 83 ns Bus Relinquish Time 83 ns POWER SUPPLIES +VS +4.75 +5 +5.25 V –VS –5.25 –5 –4.75 V +IS +30 mA –IS –10 mA Power Dissipation 200 250 mW TEMPERATURE RANGE Specified Performance –25 +85 °C Storage –55 +125 °C NOTES: (1) LSB means Least Significant Bit. For the 16-bit, ±2.5V input ADS7815, one LSB is 76µV. (2) Typical rms noise at worst case transitions and temperatures. (3) Full scale error is the worst case of –Full Scale or +Full Scale untrimmed deviation from ideal first and last code transitions, divided by the transition voltage (not divided by the full-scale range) and includes the effect of offset error. (4) All specifications in dB are referred to a full-scale ±2.5V input. (5) Full-Power Bandwidth defined as Full-Scale input frequency at which Signal-to-(Noise+Distortion) degrades to 60dB, or 10 bits of accuracy. ELECTRICAL CHARACTERISTICS At TA = –25°C to +85°C, fS = 250kHz, +VS = +5V, and –VS = –5V, using internal reference, unless otherwise specified. ADS7815U PARAMETER CONDITIONS MIN TYP MAX UNITS Parallel 16 bits Binary Two’s Complement |
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