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PGA300ARHHT Datasheet(PDF) 8 Page - Texas Instruments |
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PGA300ARHHT Datasheet(HTML) 8 Page - Texas Instruments |
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8 / 70 page  8 PGA300 SLDS204A – OCTOBER 2014 – REVISED JUNE 2016 www.ti.com Product Folder Links: PGA300 Submit Documentation Feedback Copyright © 2014–2016, Texas Instruments Incorporated Electrical Characteristics – P Gain (Chopper Stabilized) (continued) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT (1) Total input-referred noise including gain noise, ADC reference noise, ADC thermal noise, and ADC quantization noise (2) Common Mode at P Gain Input and Output: There are two constraints: (a) The single-ended voltage of the positive and negative pins at the P gain input must be between 0.3 V and 1.8 V (b) The single-ended voltage of the positive and negative pins at the P gain output must be between 0.1 V and 2 V Gain bandwidth product 10 MHz Input-referred noise density(1) f = 0.1 Hz to 2 kHz, gain = 400 V/V, sampling rate = 128 µs, across temperature 15 nV/ √Hz Input offset voltage 10 µV Input bias current 5 nA Frequency response Gain = 400 V/V, <1 kHz ±0.1 %V/V Common-mode voltage range Depends on selected gain, bridge supply and sensor span (2) V Common-mode rejection ratio fCM = 50 Hz at gain = 5 V/V 110 dB Input impedance 10 M Ω 6.12 Electrical Characteristics – P Analog-to-Digital Converter PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Sigma-delta modulator frequency 1 MHz ADC voltage input range –2.5 2.5 V Number of bits 16 bits ADC 2s complement code for –2.5- V differential input 8000hex ADC 2s complement code for 0-V differential input 0000hex ADC 2s complement code for 2.5-V differential input 7FFFhex INL Integral nonlinearity ±0.5 LSB (1) Total input-referred noise including gain noise, ADC reference noise, ADC thermal noise, and ADC quantization noise 6.13 Electrical Characteristics – T Gain (Chopper Stabilized) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Gain steps (2 bits) Gain control bits = 0b00 at dc 1.33 V/V Gain control bits = 0b01 2 Gain control bits = 0b10 5 Gain control bits = 0b11 20 Gain bandwidth product 350 kHz Noise density(1) f = 0.1 Hz to 100 Hz at gain = 5 V/V, across temperature 110 nV/ √Hz Input offset voltage 95 µV Input bias current 5 nA Frequency response Gain = 20 V/V, <100 Hz 0.335 %V/V |
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