BQ40Z60_16 Datasheet, PDF (9/47 Pages) Texas Instruments – Programmable Battery Management Unit

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bq40z60
SLUSAW3C – DECEMBER 2014 – REVISED JULY 2015
8.12 Current Wake Comparator
Typical values stated where T_A = 25°C and VCC = 10.8 V, Min/Max values stated where T_A = –40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
V_WAKE
Wake voltage
threshold
V_WAKE(DRIFT)
Temperature drift
of V_WAKE accuracy
t_WAKE
Time from
application of
current to wake
V_WAKE = V_SRP – V_SRN
V_WAKE = V_SRP – V_SRN
V_WAKE = V_SRP – V_SRN
V_WAKE = V_SRP – V_SRN
±0.3
±0.625
±0.6
±1.25
±1.2
±2.5
±2.4
±5.0
0.5%
0.25
±0.9
±1.8
mV
±3.6
±7.2
°C
0.5 ms
t_WAKE(SU)
Wake comparator
startup time
500
1000 µs
8.13 Coulomb Counter⁽¹⁾
Typical values stated where T_A = 25°C and VCC = 10.8 V, Min/Max values stated where T_A = –40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
Input voltage range
–0.1
0.1 V
Full scale range
Integral nonlinearity⁽²⁾
16-bit, Best fit over input voltage range
–V_REF1/10
±5.2
V_REF1/10
±22.3
V
LSB
Offset error
16-bit, Post-calibration
±5
±10 µV
Offset error drift
Gain error
15-bit + sign, Post-calibration
15-bit + sign, Over input voltage range
0.2
±0.2%
0.3 µV/°C
±0.8% FSR⁽³⁾
Gain error drift
15-bit + sign, Over input voltage range
150 PPM/°C
Effective input resistance
2.5
MΩ
(1) Coulomb counter electrical specifications are assured when battery charging function is disabled.
(2) 1 LSB = V_REF1/(10 × 2^N) = 1.215/(10 × 2¹⁵) = 3.71 µV
(3) Full-scale reference
8.14 CC Digital Filter
Typical values stated where T_A = 25°C and VCC = 10.8 V, Min/Max values stated where T_A = –40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
Conversion time
Single conversion
250
ms
Effective resolution
Single conversion
15
Bits
8.15 ADC⁽¹⁾
Over-operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
Input voltage range
Full scale range
Integral nonlinearity⁽²⁾
Offset error⁽³⁾
Internal reference (V_REF1)
External reference (V_REG)
V_FS = V_REF1 or V_REG
16-bit, Best fit, –0.1 V to 0.8 × V_REF1
16-bit, Best fit, –0.2 V to –0.1 V
16-bit, Post-calibration, V_FS = V_REF1
MIN
–0.2
–0.2
–V_FS
TYP
±67
MAX
1
0.8 × V_REG
V_FS
±6.6
±13.1
±157
UNIT
V
V
LSB
µV
(1) ADC electrical specifications are assured when battery charging function is disabled.
(2) 1 LSB = V_REF1/(2^N) = 1.225/(2¹⁵) = 37.4 µV (when ADCTL[SPEED1, SPEED0] = 0, 0)
(3) For VC1–VSS, VC2–VC1, VC3–VC2, VC3–VSS, ACP–VSS, and V_REF1/2, the offset error is multiplied by (1/ADC multiplexer scaling
factor (K)).
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