Datasheet

bq27530-G1
www.ti.com SLUSAL5 –DECEMBER 2012
ADC (TEMPERATURE AND CELL MEASUREMENT) CHARACTERISTICS
T
A
= –40°C to 85°C, 2.4 V < V
CC
< 2.6 V; typical values at T
A
= 25°C and V
CC
= 2.5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
ADC1
Input voltage range (TS) V
SS
– 2 V
0.125
V
ADC2
Input voltage range (BAT) V
SS
– 5 V
0.125
V
IN(ADC)
Input voltage range 0.05 1 V
G
TEMP
Internal temperature sensor –2 mV/°C
voltage gain
t
ADC_CONV
Conversion time 125 ms
Resolution 14 15 bits
V
OS(ADC)
Input offset 1 mV
Z
ADC1
(1)
Effective input resistance (TS) 8 MΩ
bq27530-G1 not measuring cell 8 MΩ
voltage
Z
ADC2
(1)
Effective input resistance (BAT)
bq27530-G1 measuring cell voltage 100 kΩ
I
lkg(ADC)
(1)
Input leakage current 0.3 μA
(1) Specified by design. Not tested in production.
INTEGRATING ADC (COULOMB COUNTER) CHARACTERISTICS
T
A
= –40°C to 85°C, 2.4 V < V
CC
< 2.6 V; typical values at T
A
= 25°C and V
CC
= 2.5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
SR
Input voltage range, V
SR
= V
(SRP)
– V
(SRN)
–0.125 0.125 V
V
(SRP)
and V
(SRN)
t
SR_CONV
Conversion time Single conversion 1 s
Resolution 14 15 bits
V
OS(SR)
Input offset 10 μV
INL Integral nonlinearity error ±0.007 ±0.034 % FSR
Z
IN(SR)
(1)
Effective input resistance 2.5 MΩ
I
lkg(SR)
(1)
Input leakage current 0.3 μA
(1) Specified by design. Not tested in production.
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