BQ34Z651_15 Datasheet, PDF (11/29 Pages) Texas Instruments – SBS 1.1-Compliant Gas Gauge

bq34z651
www.ti.com
SLUSAL7 – AUGUST 2011
ELECTRICAL CHARACTERISTICS (continued)
Over operating free-air temperature range (unless otherwise noted), T_A = –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 T_A = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V_(TEMP)
Temperature sensor voltage⁽¹¹⁾
VOLTAGE REFERENCE
–2.0
mV/°C
Output voltage
1.215
1.225
1.230
V
Output voltage drift
65
PPM/°C
HIGH FREQUENCY OSCILLATOR
f_(OSC)
Operating frequency
f_(EIO)
Frequency error ^{(12) (13)}
t_(SXO)
Start-up time⁽¹⁴⁾
LOW FREQUENCY OSCILLATOR
T_A = 20°C to 70°C
4.194
MHz
–3%
0.25%
3%
–2%
0.25%
2%
2.5
5
ms
f_(LOSC)
f_(LEIO)
t_(LSXO)
Operating frequency
Frequency error^{(13) (15)}
Start-up time⁽¹⁴⁾
T_A = 20°C to 70°C
32.768
kHz
–2.5%
0.25%
2.5%
–1.5%
0.25%
1.5%
500
µs
(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, T_A = 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.
Copyright © 2011, Texas Instruments Incorporated
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