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ADS7809U Datasheet(PDF) 4 Page - Texas Instruments |
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ADS7809U Datasheet(HTML) 4 Page - Texas Instruments |
4 / 20 page ADS7809 4 SBAS017C www.ti.com ELECTRICAL CHARACTERISTICS (Cont.) At TA = –40°C to +85°C, fS = 100kHz, VDIG = VANA = +5V, using internal reference and fixed resistors as shown in Figure 4, unless otherwise specified. ADS7809U ADS7809UB PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS DIGITAL OUTPUTS Data Format Serial 16 bits Data Co Binary Two’s Complement or Straight Binary Pipeline Delay Conversion results only available after completed conversion. Data Clock Selectable for internal or external data clock Internal EXT/INT LOW 2.3 ✻ MHz (Output Only When Transmitting Data) External EXT/INT HIGH 0.1 10 ✻✻ MHz (Can Run Continually) 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 POWER SUPPLIES Specified Performance VDIG Must be ≤ V ANA +4.75 +5 +5.25 ✻✻✻ V VANA +4.75 +5 +5.25 ✻✻✻ V IDIG 0.3 ✻ mA IANA 16 ✻ mA Power Dissipation: PWRD LOW VANA = VDIG = 5V, fS = 100kHz 100 ✻ mW PWRD HIGH 50 ✻ µW TEMPERATURE RANGE Specified Performance –40 +85 ✻✻ °C Derated Performance –55 +125 ✻✻ °C Storage –65 +150 ✻✻ °C Thermal Resistance ( θ JA) SO 75 ✻ °C/W ✻ Same as specification for ADS7809U. NOTES: (1) LSB means Least Significant Bit. For the ±10V input range, one LSB is 305µV. (2) Typical rms noise at worst case transitions and temperatures. (3) As measured with fixed resistors shown in Figure 4. Adjustable to zero with external potentiometer. (4) For bipolar input ranges, 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. For unipolar input ranges, full-scale error is the deviation of the last code transition divided by the transition voltage. It also includes the effect of offset error. (5) All specifications in dB are referred to a full-scale ±10V input. (6) Full-Power Bandwidth defined as Full-Scale input frequency at which Signal-to-(Noise + Distortion) degrades to 60dB. (7) Recovers to specified performance after 2 • FS input overvoltage. (8) The minimum VIH level for the DATACLK signal is 3V. |
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