BQ20Z90_07 Datasheet, PDF (5/27 Pages) Texas Instruments – SBS 1.1-COMPLIANT GAS GAUGE ENABLED WITH IMPEDANCE TRACK™ TECHNOLOGY FOR USE WITH THE bq29330

bq20z90
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POWER-ON RESET
V_CC = 2.4V to 2.6 V, T_A = –40°C to 85°C (unless otherwise noted)
PARAMETER
V_IT– Negative-going voltage input
V_HYS Power-on reset hysteresis
SLUS662A – DECEMBER 2005 – REVISED JUNE 2006
TEST CONDITIONS
MIN TYP MAX UNIT
1.7 1.8 1.9 V
50 125 200 mV
POWER ON RESET BEHAVIOR
VS
FREE-AIR TEMPERATURE
1.81
1.8
1.79
1.78
1.77
1.76
-40 -20
0
20
40
60
80
T_A - Free-Air Temperature - °C
INTEGRATING ADC (Coulomb Counter) CHARACTERISTICS
V_CC = 2.4V to 2.6 V, T_A = –40°C to 85°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V_(SR)
V_(SROS)
INL
Input voltage range, V_(SRN) and V_(SRP)
Input offset
Integral nonlinearity error
V_(SR) = V(SRN) – V(SRP)
MIN TYP MAX
–0.2
0.2
10
0.007% 0.034%
UNIT
V
µV
OSCILLATOR
V_CC = 2.4 V to 2.6 V, T_A = –40°C to 85°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
HIGH FREQUENCY OSCILLATOR
f_(OSC) Operating Frequency
f_(EIO) Frequency Error⁽¹⁾⁽²⁾
t_(SXO) Start-up Time⁽³⁾
LOW FREQUENCY OSCILLATOR
f_(LOSC) Operating Frequency
T_A = 20°C to 70°C
f_(LEIO) Frequency Error⁽²⁾⁽⁴⁾
T_A = 20°C to 70°C
MIN TYP MAX UNIT
-3% 0.25%
-2% 0.25%
2.5
4.194
3%
2%
5
MHz
ms
32.768
KHz
-2.5% 0.25% 2.5%
-1.5% 0.25% 1.5%
(1) The frequency error is measured from 4.194 MHz.
(2) The frequency drift is included and measured from the trimmed frequency at V_CC = 2.5 V, T_A = 25°C.
(3) The start-up time is defined as the time it takes for the oscillator output frequency to be within 1% of the specified frequency.
(4) The frequency error is measured from 32.768 kHz.
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