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| BQ20Z70_15 Datasheet, PDF (5/17 Pages) Texas Instruments – SBS 1.1-COMPLIANT GAS GAUGE ENABLED WITH IMPEDANCE TRACK™ | |||
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Not Recommended For New Designs
bq20z70
www.ti.com
SLUS686B â NOVEMBER 2005 â REVISED JULY 2007
INTEGRATING ADC (Coulomb Counter) CHARACTERISTICS
VCC = 2.4 V to 2.6 V, TA = â40°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(SRP) â V(SRN)
TA =25°C to 85°C
MIN
â0.20
TYP
10
±0.007%
MAX
0.20
±0.037%
UNIT
V
μV
OSCILLATOR
VCC = 2.4 V to 2.6 V, TA = â40°C to 85°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX
HIGH FREQUENCY OSCILLATOR
f (OSC) Operating frequency
f (EIO) Frequency error (1)(2)
f (sxo)
Start-up time (3)
LOW FREQUENCY OSCILLATOR
T A = 20°C to 70°C
4.194
-3% 0.25%
3%
-2% 0.25%
2%
2.5
5
f (LOSC) Operating frequency
f (LEIO) Frequency error (2)(4)
f (Lsxo) Start-up time (5)
T A = 20°C to 70°C
-2.5%
-1.5%
32.768
0.25%
0.25%
2.5%
1.5%
500
(1) The frequency error is measured from 4.194 MHz.
(2) The frequency drift is included and measured f rom 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.
(5) The start-up time is defined as the time it takes for the oscillator output frequency to be ±3%.
UNIT
MHz
ms
kHz
μs
DATA FLASH MEMORY CHARACTERISTICS
VCC = 2.4 V to 2.6 V, TA = â40°C to 85°C (unless otherwise noted)
PARAMETER
tDR
Data retention
Flash programming write-cycles
t(WORDPROG) Word programming time
I(DDPROG) Flash-write and erase supply current
See (1)
See (1)
See (1)
See (1)
TEST CONDITIONS
(1) Specified by design. Not production tested
MIN
10
20,000
TYP MAX UNIT
Years
Cycles
2 ms
5
10 mA
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