BQ34Z651_15 Datasheet, PDF (10/29 Pages) Texas Instruments – SBS 1.1-Compliant Gas Gauge

bq34z651
SLUSAL7 – AUGUST 2011
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Over operating free-air temperature range (unless otherwise noted), T_A = –40°C to 85°C, V_(REG25) = 2.41 V to 2.59 V,
V_(BAT) = 14 V, C_(REG25) = 1 µF, C_(REG33) = 2.2 µF; typical values at T_A = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V_(ZVCHG)
ZVCHG clamp voltage
BAT = 4.5 V
LOGIC; T_A = –40°C to 100°C (unless otherwise noted)
R_(PULLUP)
Internal pullup resistance
ALERT
RESET
3.3
3.5
3.7
V
60
100
200
kΩ
1
3
6
ALERT
0.2
V_OL
Logic low output voltage level
RESET; V_(BAT) = 7 V; V_(REG25) = 1.5 V; I
(RESET) ^{= 200 μA}
GPOD; I_(GPOD) = 50 μA
LOGIC SMBC, SMBD, PFIN, PRES, SAFE, ALERT, DISP
0.4
V
0.6
V_IH
V_IL
V_OH
V_OL
C_I
I_(SAFE)
I_lkg(SAFE)
I_lkg
ADC ⁽²⁾
High-level input voltage
Low-level input voltage
Output voltage high⁽¹⁾
Low-level output voltage
Input capacitance
SAFE source currents
SAFE leakage current
Input leakage current
2.0
I_L = –0.5 mA
V_REG25 – 0.5
PRES, PFIN, ALERT, DISP; I_L = 7 mA;
5
SAFE active, SAFE = V_(REG25) – 0.6 V
SAFE inactive
–3
–0.2
V
0.8
V
V
0.4
V
pF
mA
0.2
µA
1
µA
Input voltage range
Conversion time
TS1, TS2, using Internal V_ref
–0.2
1
V
31.5
ms
Resolution (no missing codes)
16
bits
Effective resolution
14
15
bits
Integral nonlinearity
±0.03
%FSR ⁽³⁾
Offset error⁽⁴⁾
Offset error drift⁽⁴⁾
Full-scale error⁽⁵⁾
T_A = 25°C to 85°C
140
2.5
±0.1%
250
18
±0.7%
µV
μV/°C
Full-scale error drift
50
PPM/°C
Effective input resistance⁽⁶⁾
8
MΩ
COULOMB COUNTER
Input voltage range
–0.20
0.20
V
Conversion time
Single conversion
250
ms
Effective resolution
Single conversion
15
bits
Integral nonlinearity
Offset error ⁽⁷⁾
Offset error drift
Full-scale error^{(8) (9)}
–0.1 V to 0.20 V
–0.20 V to –0.1 V
T_A = 25°C to 85°C
±0.007
±0.007
10
0.4
±0.35%
±0.034
0.7
%FSR
µV
µV/°C
Full-scale error drift
150
PPM/°C
Effective input resistance⁽¹⁰⁾
T_A = 25°C to 85°C
2.5
MΩ
INTERNAL TEMPERATURE SENSOR
(1) RC[0:7] bus
(2) Unless otherwise specified, the specification limits are valid at all measurement speed modes.
(3) Full-scale reference
(4) Post-calibration performance and no I/O changes during conversion with SRN as the ground reference
(5) Uncalibrated performance. This gain error can be eliminated with external calibration.
(6) The A/D input is a switched-capacitor input. Since the input is switched, the effective input resistance is a measure of the average
resistance.
(7) Post-calibration performance
(8) Reference voltage for the coulomb counter is typically V_ref/3.969 at V_(REG25) = 2.5 V, T_A = 25°C.
(9) Uncalibrated performance. This gain error can be eliminated with external calibration.
(10) The CC input is a switched capacitor input. Since the input is switched, the effective input resistance is a measure of the average
resistance.
10
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