BQ34Z100 Datasheet, PDF (7/50 Pages) Texas Instruments – Wide Range Fuel Gauge with Impedance Track™ Technology

bq34z100
www.ti.com
SLUSAU1 – MAY 2012
INTEGRATING ADC (COULOMB COUNTER) CHARACTERISTICS (continued)
T_A = –40°C to 85°C, 2.4 V < REG25 < 2.6 V; Typical Values at T_A = 25°C and REG25 = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
t_{SR_CONV}
Conversion time
Resolution
Single conversion
1
s
14
15
bits
V_OS(SR)
I_NL
Z_IN(SR)
I_lkg(SR)
Input offset
Integral nonlinearity error
Effective input resistance (1)
Input leakage current⁽¹⁾
10
µV
±0.007 ±0.034 % FSR
2.5
MΩ
0.3
µA
(1) Assured by design. Not tested in production.
ADC (TEMPERATURE AND CELL MEASUREMENT) CHARACTERISTICS
T_A = –40°C to 85°C, 2.4 V < REG25 < 2.6 V; Typical Values at T_A = 25°C and REG25 = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
V_IN(ADC)
t_{ADC_CONV}
Input voltage range
Conversion time
Resolution
0.05
1
V
125
ms
14
15
bits
V_OS(ADC)
Input offset
1
mV
Z_ADC1
Effective input resistance (TS) (1)
8
MΩ
Z_ADC2
Effective input resistance (BAT)(1)
bq34z100 not measuring cell
voltage
8
MΩ
bq34z100 measuring cell voltage
100
KΩ
I_lkg(ADC)
Input leakage current (1)
0.3
µA
DATA FLASH MEMORY CHARACTERISTICS
T_A = –40°C to 85°C, 2.4 V < REG25 < 2.6 V; Typical Values at T_A = 25°C and REG25 = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
Data retention⁽¹⁾
t_DR
Flash-programming write cycles⁽¹⁾
10
20,000
Years
Cycles
t_WORDPROG
I_CCPROG
Word programming time⁽¹⁾
Flash-write supply current⁽¹⁾
2
ms
5
10
mA
(1) Assured by design. Not tested in production.
HDQ COMMUNICATION TIMING CHARACTERISTICS
T_A = –40°C to 85°C, C_REG = 0.47 μF, 2.45 V < V_REGIN = V_BAT < 5.5 V; typical values at T_A = 25°C and V_REGIN = V_BAT = 3.6 V
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
t_(CYCH)
t_(CYCD)
t_(HW1)
t_(DW1)
t_(HW0)
t_(DW0)
t_(RSPS)
t_(B)
t_(BR)
t_(RISE)
Cycle time, host to bq34z100
Cycle time, bq34z100 to host
Host sends 1 to bq34z100
bq34z100 sends 1 to host
Host sends 0 to bq34z100
bq34z100 sends 0 to host
Response time, bq34z100 to host
Break time
Break recovery time
HDQ line rising time to logic 1 (1.2
V)
190
μs
190
205
250
μs
0.5
50
μs
32
50
μs
86
145
μs
80
145
μs
190
950
μs
190
μs
40
μs
950
ns
t_(RST)
HDQ Reset
1.8
2.2
s
Copyright © 2012, Texas Instruments Incorporated
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