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BQ34Z950DBTR Datasheet(PDF) 9 Page - Texas Instruments |
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BQ34Z950DBTR Datasheet(HTML) 9 Page - Texas Instruments |
9 / 28 page bq34z950 www.ti.com SLUSBF0A – APRIL 2013 – REVISED MAY 2013 ELECTRICAL CHARACTERISTICS (continued) Over-operating free-air temperature range (unless otherwise noted), TA = –40°C to 85°C, V(REG25) = 2.41 V to 2.59 V, V(BAT) = 14 V, C(REG25) = 1 µF, C(REG33) = 2.2 µF; typical values at TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Effective input resistance(6) 8 M Ω COULOMB COUNTER Input voltage range –0.20 0.20 V Conversion time Single conversion 250 ms Effective resolution Single conversion 15 bits –0.1 V to 0.20 V ±0.007 ±0.034 Integral nonlinearity %FSR –0.20 V to –0.1 V ±0.007 Offset error (7) TA = 25°C to 85°C 10 µV Offset error drift 0.4 0.7 µV/°C Full-scale error(8) (9) ±0.35% Full-scale error drift 150 PPM/°C Effective input resistance(10) TA = 25°C to 85°C 2.5 M Ω INTERNAL TEMPERATURE SENSOR Temperature sensor V(TEMP) –2.0 mV/°C voltage(11) VOLTAGE REFERENCE Output voltage 1.215 1.225 1.230 V Output voltage drift 65 PPM/°C HIGH FREQUENCY OSCILLATOR f(OSC) Operating frequency 4.194 MHz –3% 0.25% 3% f(EIO) Frequency error (12) (13) TA = 20°C to 70°C –2% 0.25% 2% t(SXO) Start-up time(14) 2.5 5 ms LOW FREQUENCY OSCILLATOR f(LOSC) Operating frequency 32.768 kHz –2.5% 0.25% 2.5% f(LEIO) Frequency error(13) (15) TA = 20°C to 70°C –1.5% 0.25% 1.5% t(LSXO) Start-up time(14) 500 µs (6) The A/D input is a switched-capacitor input. Since the input is switched, the effective input resistance is a measure of the average resistance. (7) Post-calibration performance (8) Reference voltage for the coulomb counter is typically Vref/3.969 at V(REG25) = 2.5 V, TA = 25°C. (9) Uncalibrated performance. This gain error can be eliminated with external calibration. (10) The CC input is a switched capacitor input. Since the input is switched, the effective input resistance is a measure of the average resistance. (11) –53.7 LSB/°C (12) The frequency error is measured from 4.194 MHz. (13) The frequency drift is included and measured from the trimmed frequency at V(REG25) = 2.5 V, TA = 25°C. (14) The startup time is defined as the time it takes for the oscillator output frequency to be ±3%. (15) The frequency error is measured from 32.768 kHz. POWER-ON RESET Over-operating free-air temperature range (unless otherwise noted), TA = –40°C to 85°C, V(REG25) = 2.41 V to 2.59 V, V(BAT) = 14 V, C(REG25) = 1 µF, C(REG33) = 2.2 µF; typical values at TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIT– Negative-going voltage input 1.7 1.8 1.9 V VHYS Power-on reset hysteresis 5 125 200 mV Active low time after power up or watchdog tRST RESET active low time 100 250 560 µs reset Copyright © 2013, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: bq34z950 |
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