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PGA309AIPWT Datasheet(PDF) 6 Page - Texas Instruments |
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PGA309AIPWT Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 24 page  PGA309 SBOS292C – DECEMBER 2003 – REVISED JANUARY 2011 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Boldface limits apply over the specified temperature range, TA = –40°C to +125°C. At TA = +25°C, VSA= VSD = +5V (VSA = VSUPPLY ANALOG, VSD = VSUPPLY DIGITAL; VSA must equal VSD), GNDD = GNDA = 0, and VREF = REFIN/REFOUT = +5V, unless otherwise noted. PGA309 PARAMETER CONDITIONS MIN TYP MAX UNIT Temperature ADC. continued xx Offset vs VSA GPGA = 1 800 mV/V GPGA = 2 400 mV/V GPGA = 4 200 mV/V GPGA = 8 150 mV/V xx Gain Error 0.05 0.50 % xx Gain Error Drift 5 50 ppm/°C xx Noise All gains < 1 LSB xx Gain vs VSA 80 ppm/V xx Common-Mode Rejection At dc and GPGA = 8 105 dB At dc and GPGA = 1 100 dB Temp ADC Ext. REF (VREFT = VREF, VEXC, or VSA) Register 6, bit D8 = 0 xx Full-Scale Input Voltage (+Input) − (−Input) ±VREFT/GPGA V xx Differential Input Impedance 2.4/GPGA M Ω xx Common-Mode Input Impedance GPGA = 1 8 M Ω GPGA = 2 8 M Ω GPGA = 4 8 M Ω GPGA = 8 8 M Ω xx Resolution R1, R0 = ‘00’, ADC2X = ‘0’, conversion time = 6ms 11 Bits + Sign R1, R0 = ‘01’, ADC2X = ‘0’, conversion time = 24ms 13 Bits + Sign R1, R0 = ‘10’, ADC2X = ‘0’, conversion time = 50ms 14 Bits + Sign R1, R0 = ‘11’, ADC2X = ‘0’, conversion time = 100ms 15 Bits + Sign xx Integral Nonlinearity 0.01 % xx Offset Error GPGA = 1 2.5 mV GPGA = 2 1.25 mV GPGA = 4 0.7 mV GPGA = 8 0.3 mV xx Offset Drift GPGA = 1 1.5 mV/°C GPGA = 2 1.0 mV/°C GPGA = 4 0.7 mV/°C GPGA = 8 0.6 mV/°C xx Gain Error −0.2 % xx Gain Error Drift 2 ppm/°C xx Gain vs VSA 80 ppm/V xx Common-Mode Rejection At dc and GPGA = 8 100 dB At dc and GPGA = 1 85 dB External Temperature Current Excitation ITEMP Register 6, bit D11 = 1 xx Current Excitation 5.8 7 8 mA xx Temperature Drift 5 nA/°C xx Voltage Compliance VSA −1.2 V 6 Submit Documentation Feedback Copyright © 2003–2011, Texas Instruments Incorporated Product Folder Link(s): PGA309 |
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