BQ20Z80-V102_07 Datasheet, PDF (5/28 Pages) Texas Instruments – SBS 1.1-COMPLIANT GAS GAUGE ENABLED WITH IMPEDANCE TRACK TM TECHNOLOGY FOR USE WITH THE BQ29312A

bq20z80-V102
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POWER-ON RESET
V_DD = 3 V to 3.6 V, T_A = –40°C to 85°C (unless otherwise noted)
PARAMETER
V_IT– Negative-going voltage input
V_HYS Power-on reset hysteresis
SLUS681B – NOVEMBER 2005 – REVISED JANUARY 2007
TEST CONDITIONS
MIN TYP MAX UNIT
2.1 2.3 2.5 V
50 150 200 mV
POWER ON RESET BEHAVIOR
vs
FREE-AIR TEMPERATURE
2.50
140
2.45
135
2.40
130
2.35
V_IT-
125
2.30
120
2.25
V_hys
115
2.20
110
2.15
105
2.10
100
-20 -10 0 10 20 30 40 50 60 70 80
T_A - Free-Air Temperature - °C
INTEGRATING ADC (Coulomb Counter) CHARACTERISTICS
V_DD = 3 V to 3.6 V, T_A = –40°C to 85°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V_(SR)
V_(SROS)
INL
Input voltage range, V_(SR2) and V_(SR1)
Input offset
Integral nonlinearity error
V_(SR) = V(SR2) – V(SR1)
MIN TYP MAX
–0.25
0.25
1
0.004% 0.019%
UNIT
V
µV
PLL SWITCHING CHARACTERISTICS
V_DD = 3 V to 3.6 V, T_A = –40°C to 85°C (unless otherwise noted)
PARAMETER
t_(SP)
Start-up time ⁽¹⁾
TEST CONDITIONS
0.5% frequency error
MIN TYP MAX UNIT
2
5 ms
(1) The frequency error is measured from the trimmed frequency of the internal system clock which is 128 oscillator frequency, nominally
4.194 MHz.
OSCILLATOR
V_DD = 3 V to 3.6 V, T_A = –40°C to 85°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
ROSC = 100 kΩ
f_(exo)
Frequency error from 32.768 kHz
ROSC = 100 kΩ, V_DD = 3.3 V
XCK1 = 12-pF XTAL
f_(sxo)
Start-up time ⁽¹⁾
ROSC = 100 kΩ
XCK1 = 12-pF XTAL
MIN TYP MAX
–2% 0.25% 2%
–1% 0.25% 1%
–0.25%
0.25%
250
200
UNIT
µs
ms
(1) The start-up time is defined as the time it takes for the oscillator output frequency to be within 1% of the specified frequency.
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