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BQ20Z80DBT Datasheet(PDF) 5 Page - Texas Instruments

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Part # BQ20Z80DBT
Description  SBS 1.1-COMPLIANT GAS GAUGE ENABLED WITH IMPEDANCE TRACK
Download  25 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

BQ20Z80DBT Datasheet(HTML) 5 Page - Texas Instruments

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POWER-ON RESET
2.10
2.15
2.20
2.25
2.30
2.35
2.40
2.45
2.50
-20 -10
0
10 20 30 40 50 60 70 80
100
105
110
115
120
125
130
135
140
TA - Free-Air Temperature - °C
POWER ON RESET BEHAVIOR
vs
FREE-AIR TEMPERATURE
VIT-
Vhys
INTEGRATING ADC (Coulomb Counter) CHARACTERISTICS
PLL SWITCHING CHARACTERISTICS
OSCILLATOR
bq20z80
bq20z80A
SLUS782 – JULY 2007
VDD = 3 V to 3.6 V, TA = –40°C to 85°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIT–
Negative-going voltage input
2.1
2.3
2.5
V
VHYS
Power-on reset hysteresis
50
150
200
mV
VDD = 3 V to 3.6 V, TA = –40°C to 85°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V(SR)
Input voltage range, V(SR2) and V(SR1)
V(SR) = V(SR2) – V(SR1)
–0.25
0.25
V
V(SROS)
Input offset
1
μV
INL
Integral nonlinearity error
0.004%
0.019%
VDD = 3 V to 3.6 V, TA = –40°C to 85°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
t(SP)
Start-up time (1)
0.5% frequency error
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.
VDD = 3 V to 3.6 V, TA = –40°C to 85°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ROSC = 100 k
–2%
0.25%
2%
f(exo)
Frequency error from 32.768 kHz
ROSC = 100 k
Ω, V
DD = 3.3 V
–1%
0.25%
1%
XCK1 = 12-pF XTAL
–0.25%
0.25%
ROSC = 100 k
250
μs
f(sxo)
Start-up time (1)
XCK1 = 12-pF XTAL
200
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.
5
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