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BQ27500DRZT Datasheet(PDF) 5 Page - Texas Instruments |
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BQ27500DRZT Datasheet(HTML) 5 Page - Texas Instruments |
5 / 39 page www.ti.com 3.4 INTERNAL TEMPERATURE SENSOR CHARACTERISTICS 3.5 HIGH FREQUENCY OSCILLATOR 3.6 LOW FREQUENCY OSCILLATOR 3.7 INTEGRATING ADC (COULOMB COUNTER) CHARACTERISTICS 3.8 ADC (TEMPERATURE AND CELL MEASUREMENT) CHARACTERISTICS bq27500 bq27501 System-Side Impedance Track™ Fuel Gauge SLUS785 – SEPTEMBER 2007 TA = –40°C to 85°C, 2.4 V < VCC < 2.6 V; Typical Values at TA = 25°C and VCC = 2.5 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT GTEMP Temperature sensor voltage gain –2.0 mV/ °C TA = –40°C to 85°C, 2.4 V < VCC < 2.6 V; Typical Values at TA = 25°C and VCC = 2.5 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT fOSC Operating frequency 2.097 MHz TA = 0°C to 60°C –2.0% 0.38% 2.0% fEIO Frequency error (1) (2) TA = –20°C to 70°C –3.0% 0.38% 3.0% TA = –40°C to 85°C –4.5% 0.38% 4.5% tSXO Start-up time(3) 2.5 5 ms (1) The frequency error is measured from 2.097 MHz. (2) The frequency drift is included and measured from the trimmed frequency at VCC = 2.5V, TA = 25°C. (3) The startup time is defined as the time it takes for the oscillator output frequency to be ±3%. TA = –40°C to 85°C, 2.4 V < VCC < 2.6 V; Typical Values at TA = 25°C and VCC = 2.5 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT fLOSC Operating frequency 32.768 kHz TA = 0°C to 60°C –1.5% 0.25% 1.5% fLEIO Frequency error (1) (2) TA = –20°C to 70°C –2.5% 0.25% 2.5% TA = –40°C to 85°C –4.0% 0.25% 4.0% tLSXO Start-up time(3) 500 μs (1) The frequency drift is included and measured from the trimmed frequency at VCC = 2.5V, TA = 25°C. (2) The frequency error is measured from 32.768 kHz. (3) The startup time is defined as the time it takes for the oscillator output frequency to be ±3%. TA = –40°C to 85°C, 2.4 V < VCC < 2.6 V; Typical Values at TA = 25°C and VCC = 2.5 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VSR_IN Input voltage range, V(SRN) and V(SRP) VSR = V(SRN) – V(SRP) –0.125 0.125 V tSR_CONV Conversion time Single conversion 1 s Resolution 14 15 bits Before calibration 1 mV VSR_OS Input offset After calibration 10 μV INL Integral nonlinearity error ±0.007 ±0.034 % FSR ZSR_IN Effective input resistance(1) 2.5 M Ω ISR_LKG Input leakage current(1) 0.3 μA (1) Specified by design. Not tested in production. TA = –40°C to 85°C, 2.4 V < VCC < 2.6 V; Typical Values at TA = 25°C and VCC = 2.5 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VADC_IN Input voltage range –0.2 1 V Submit Documentation Feedback ELECTRICAL SPECIFICATIONS 5 |
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