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BQ27500DRZT Datasheet(PDF) 5 Page - Texas Instruments

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Part # BQ27500DRZT
Description  System-Side Impedance Track??Fuel Gauge
Download  39 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

BQ27500DRZT Datasheet(HTML) 5 Page - Texas Instruments

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3.4
INTERNAL TEMPERATURE SENSOR CHARACTERISTICS
3.5
HIGH FREQUENCY OSCILLATOR
3.6
LOW FREQUENCY OSCILLATOR
3.7
INTEGRATING ADC (COULOMB COUNTER) CHARACTERISTICS
3.8
ADC (TEMPERATURE AND CELL MEASUREMENT) CHARACTERISTICS
bq27500
bq27501
System-Side Impedance Track™ Fuel Gauge
SLUS785 – SEPTEMBER 2007
TA = –40°C to 85°C, 2.4 V < VCC < 2.6 V; Typical Values at TA = 25°C and VCC = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
GTEMP
Temperature sensor voltage gain
–2.0
mV/
°C
TA = –40°C to 85°C, 2.4 V < VCC < 2.6 V; Typical Values at TA = 25°C and VCC = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
fOSC
Operating frequency
2.097
MHz
TA = 0°C to 60°C
–2.0% 0.38%
2.0%
fEIO
Frequency error (1) (2)
TA = –20°C to 70°C
–3.0% 0.38%
3.0%
TA = –40°C to 85°C
–4.5% 0.38%
4.5%
tSXO
Start-up time(3)
2.5
5
ms
(1)
The frequency error is measured from 2.097 MHz.
(2)
The frequency drift is included and measured from the trimmed frequency at VCC = 2.5V, TA = 25°C.
(3)
The startup time is defined as the time it takes for the oscillator output frequency to be
±3%.
TA = –40°C to 85°C, 2.4 V < VCC < 2.6 V; Typical Values at TA = 25°C and VCC = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
fLOSC
Operating frequency
32.768
kHz
TA = 0°C to 60°C
–1.5%
0.25%
1.5%
fLEIO
Frequency error (1) (2)
TA = –20°C to 70°C
–2.5%
0.25%
2.5%
TA = –40°C to 85°C
–4.0%
0.25%
4.0%
tLSXO
Start-up time(3)
500
μs
(1)
The frequency drift is included and measured from the trimmed frequency at VCC = 2.5V, TA = 25°C.
(2)
The frequency error is measured from 32.768 kHz.
(3)
The startup time is defined as the time it takes for the oscillator output frequency to be
±3%.
TA = –40°C to 85°C, 2.4 V < VCC < 2.6 V; Typical Values at TA = 25°C and VCC = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VSR_IN
Input voltage range, V(SRN) and V(SRP)
VSR = V(SRN) – V(SRP)
–0.125
0.125
V
tSR_CONV
Conversion time
Single conversion
1
s
Resolution
14
15
bits
Before calibration
1
mV
VSR_OS
Input offset
After calibration
10
μV
INL
Integral nonlinearity error
±0.007 ±0.034
% FSR
ZSR_IN
Effective input resistance(1)
2.5
M
ISR_LKG
Input leakage current(1)
0.3
μA
(1)
Specified by design. Not tested in production.
TA = –40°C to 85°C, 2.4 V < VCC < 2.6 V; Typical Values at TA = 25°C and VCC = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VADC_IN
Input voltage range
–0.2
1
V
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ELECTRICAL SPECIFICATIONS
5


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