Texas Instruments BQ76942, Manual

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7.17 Current Measurement Digital Filter (CC2)
Typical values stated where T
A
= 25°C and V
BAT
= 55.0 V, min/max values stated where T
A
= -40°C to 85°C and V
BAT
= 4.7 V
to 55 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
(CC2_CONV)
Conversion-time
Single conversion, in NORMAL
mode,
Settings:Configuration:Power
Config[FASTADC] = 0
2.93 ms
t
(CC2_CONV_FAST)
Conversion-time in fast mode
Single conversion, in NORMAL
mode,
Settings:Configuration:Power
Config[FASTADC] = 1
1.46 ms
B
(CC2_RES)
Code stability
(1) (2)
Single conversion, in NORMAL
mode,
Settings:Configuration:Power
Config[FASTADC] = 0
14 15 bits
B
(CC2_RES_FAST)
Code stability in fast mode
(1)
Single conversion, in NORMAL
mode,
Settings:Configuration:Power
Config[FASTADC] = 1
13.5 bits
(1) Code stability is defined as the resolution such that the data exhibits 3-sigma variation within ±1-LSB.
(2) Specified by characterization
7.18 Current Wake Detector
Typical values stated where T
A
= 25°C and V
BAT
= 55.0 V, min/max values stated where T
A
= -40°C to 85°C and V
BAT
= 4.7 V
to 55 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
WAKE_THR
Wakeup voltage threshold error
(1)
T
A
= 25°C, V
WAKE
= V
SRP
– V
SRN
, setting
between ±0.5 mV and ±5 mV. Measured
using averaged data to remove effects of
noise.
–200 200 µV
V
WAKE_THR
Wakeup voltage threshold error
(1)
T
A
= 25°C, V
WAKE
= V
SRP
– V
SRN
,
setting beyond ±5 mV. Measured using
averaged data to remove effects of noise. –5 5
% of
setting
t
WAKE
Measurement interval
(1)
12 ms
(1) Specified by design
7.19 Analog-to-Digital Converter
Typical values stated where T
A
= 25°C and V
BAT
= 55.0 V, min/max values stated where T
A
= -40°C to 85°C and V
BAT
= 4.7 V
to 55 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
(ADC_IN_CELLS)
Input voltage range
(differential cell input
mode)
(4)
Internal reference (Vref = V
REF1
) –0.2 5.5 V
V
(ADC_IN)
Input voltage range
(ADCIN measurement
mode)
(5)
Internal reference (Vref = V
REF1
), applicable
to ADCIN measurements using the TS1, TS2,
TS3, ALERT, CFETOFF, DFETOFF, HDQ,
DCHG, and DDSG pins
–0.2 V
REG18
V
V
(ADC_IN_TS)
Input voltage range
(external thermistor
measurement mode)
(6)
Regulator reference (Vref = V
REG18
),
applicable to external thermistor
measurements using the TS1, TS2, TS3,
ALERT, CFETOFF, DFETOFF, HDQ, DCHG,
and DDSG pins
–0.2 V
REG18
V
V
(ADC_IN_DIV)
Input voltage range
(divider measurement
mode)
(7)
Internal reference (Vref = V
REF1
), applicable
to divider measurements using the VC10,
PACK, and LD pins relative to VSS. –0.2 55 V
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BQ76942
SLUSE14B – DECEMBER 2020 – REVISED DECEMBER 2021
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