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ADS7812UB Datasheet(PDF) 3 Page - Texas Instruments |
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ADS7812UB Datasheet(HTML) 3 Page - Texas Instruments |
3 / 25 page ADS7812 3 SBAS042A www.ti.com SAMPLING DYNAMICS Aperture Delay 40 ✻ ns Aperture Jitter 20 ✻ ps Transient Response FS Step 5 ✻ µs Overvoltage Recovery(7) 750 ✻ ns REFERENCE Internal Reference Voltage 2.48 2.5 2.52 ✻✻ ✻ V Internal Reference Source Current 100 ✻ µA Internal Reference Drift 8 ✻ ppm/ °C 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(8) +2.0 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 = 500µA+4 ✻ V Leakage Current High-Z State, ±1 ✻ µA VOUT = 0V to VS Output Capacitance High-Z State 15 15 pF POWER SUPPLY VS +4.75 +5 +5.25 ✻✻ ✻ V Power Dissipation fS = 40kHz 35 ✻ mW TEMPERATURE RANGE Specified Performance –40 +85 ✻✻ °C Derated Performance –55 +125 ✻✻ °C ✻ Same specification as grade to the left. NOTES: (1) LSB means Least Significant Bit. For the ±10V input range, one LSB is 4.88mV. (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) After the ADS7812 is initially powered on and fully settles, this is the time delay after it is brought out of Power Down Mode until all internal settling occurs and the analog input is acquired to rated accuracy, and normal conversions can begin again. (5) All specifications in dB are referred to a full-scale input. (6) Useable Bandwidth defined as Full-Scale input frequency at which Signal-to-(Noise+Distortion) degrades to 60dB, or 10 bits of accuracy. (7) Recovers to specified performance after 2 x FS input overvoltage. (8) The minimum VIH level for the DATACLK signal is 3V. SPECIFICATIONS (Cont.) At TA = –40°C to +85°C, fS = 40kHz, VS = +5V ±5%, using internal reference, unless otherwise specified. ADS7812P, U ADS7812PB, UB PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS Serial Binary Two’s Complement |
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