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ADS7807UBE4 Datasheet(PDF) 3 Page - Burr-Brown (TI) |
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ADS7807UBE4 Datasheet(HTML) 3 Page - Burr-Brown (TI) |
3 / 24 page ADS7807 3 SBAS022C www.ti.com ELECTRICAL CHARACTERISTICS (Cont.) At TA = –40°C to +85°C, fS = 40kHz, VDIG = VANA = +5V, and using internal reference and fixed resistors (see Figure 7b), unless otherwise specified. ADS7807P, U ADS7807PB, UB PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS AC ACCURACY Spurious-Free Dynamic Range fIN = 1kHz, ±10V 90 100 96 ✻ dB(6) Total Harmonic Distortion fIN = 1kHz, ±10V –100 –90 ✻ –96 dB Signal-to-(Noise + Distortion) fIN = 1kHz, ±10V 83 88 86 ✻ dB –60dB Input 30 32 dB Signal-to-Noise fIN = 1kHz, ±10V 83 88 86 ✻ dB Usable Bandwidth(7) 130 ✻ kHz Full-Power Bandwidth (–3dB) 600 ✻ kHz SAMPLING DYNAMICS Aperture Delay 40 ✻ ns Aperture Jitter 20 ✻ ps Transient Response FS Step 5 ✻ µs Over-Voltage Recovery(8) 750 ✻ ns REFERENCE Internal Reference Voltage No Load 2.48 2.5 2.52 ✻✻ ✻ V Internal Reference Source Current 1 ✻ µA (Must use external buffer.) Internal Reference Drift 8 ✻ ppm/ °C External Reference Voltage Range 2.3 2.5 2.7 ✻✻ ✻ V for Specified Linearity External Reference Current Drain External 2.5000V Ref 100 ✻ µA DIGITAL INPUTS Logic Levels VIL –0.3 +0.8 ✻✻ V VIH(9) +2.0 VD + 0.3V ✻✻ V IIL VIL = 0V ±10 ✻ µA IIH VIH = 5V ±10 ✻ µA DIGITAL OUTPUTS Parallel 16 bits in 2-bytes; Serial Data Format Binary Two’s Complement or Straight Binary Data Coding VOL ISINK = 1.6mA +0.4 ✻ V VOH ISOURCE = 500µA+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 RL = 3.3kΩ, CL = 50pF 83 ✻ ns Bus Relinquish Time RL = 3.3kΩ, CL = 10pF 83 ✻ ns POWER SUPPLIES Specified Performance VDIG Must be ≤ V ANA +4.75 +5 +5.25 ✻✻ ✻ V VANA +4.75 +5 +5.25 ✻✻ ✻ V IDIG 0.6 ✻ mA IANA 5.0 ✻ mA Power Dissipation VANA = VDIG = 5V, fS = 40kHz 28 35 ✻✻ mW REFD HIGH 23 ✻ mW PWRD and REFD HIGH 50 ✻ µW TEMPERATURE RANGE Specified Performance –40 +85 ✻✻ °C Derated Performance –55 +125 ✻✻ °C Storage –65 +150 ✻✻ °C Thermal Resistance ( θ JA) DIP 75 ✻ °C/W SO 75 ✻ °C/W ✻ Same specifications as ADS7807P, U. NOTES: (1) LSB means Least Significant Bit. One LSB for the ±10V input range is 305µV. (2) Typical rms noise at worst-case transition. (3) As measured with fixed resistors, see Figure 7b. Adjustable to zero with external potentiometer. (4) 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. (5) This is the time delay after the ADS7807 is brought out of Power-Down mode until all internal settling occurs and the analog input is acquired to rated accuracy. A Convert command after this delay will yield accurate results. (6) All specifications in dB are referred to a full-scale input. (7) Usable bandwidth defined as full-scale input frequency at which Signal-to-(Noise + Distortion) degrades to 60dB. (8) Recovers to specified performance after 2 • FS input overvoltage. (9) The minimum VIH level for the DATACLK signal is 3V. |
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