LP3910 Datasheet, PDF (14/72 Pages) Texas Instruments – Power Management IC for Hard-Drive-Based Portable Media Players

LP3910
SNVS481M – NOVEMBER 2006 – REVISED DECEMBER 2015
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7.18 Electrical Characteristics: ADC
All limits apply for T_J = 25°C unless otherwise specified.
PARAMETER
TEST CONDITIONS
V_REF
INL
DNL
V_{GP_IN}
Reference voltage
Core ADC integral non-linearity
Core ADC differential non-linearity
T_J = 25°C
T_J = 0°C to 125°C
V_REF = 1.225⁽¹⁾
V_REF = 1.225⁽¹⁾
General purpose ADC input
voltage range
V_BATT,
RANGE 0
Battery maximum voltage scalar
output
Battery minimum voltage scalar
output
VBATT = 3.5 V
VBATT = 2.6 V
V_BATT,
RANGE 1
Battery maximum voltage scalar
output
Battery minimum voltage scalar
output
VBATT = 4.4 V
V_REF = 2.6 V
V_ISENSE ,
RANGE 0
V_ISENSE,
RANGE 1
ADC1 and
ADC2_MIN
ADC1 and
ADC2_MAX
t_CONV
t_WARM
ISENSE maximum voltage scalar
output
ISENSE minimum voltage scalar
output
ISENSE maximum voltage scalar
output
ISENSE minimum voltage scalar
output
ADC1 and ADC2 minimum
voltage scalar output
ADC1 and ADC2 maximum
voltage scalar output
Conversion time⁽¹⁾
Warm-up time
V_ISENSE = 0.6463 V
I_CHG = 0.605 A,
R_SENSE = 4.64 kΩ
V_ISENSE = 0 V
I_CHG = 0 A,
R_SENSE = 4.64 kΩ
V_ISENSE = 1.175 V
I_CHG = 1.1 A,
R_SENSE = 4.64 kΩ
V_ISENSE = 0 V
I_CHG = 0 A,
R_SENSE = 4.64 kΩ
V_REFH = 1.225 V
V_REFH = 1.225 V
(1) This specification is ensured by design.
MIN
1.22
1.2
–1
–0.5
V_REF
2.435
1.217
2.435
1.217
2.373
TYP
1.225
1.225
MAX
1.23
1.23
1
0.5
2 × V_REF
2.45
2.465
UNIT
V
V
LSB
LSB
V
V
1.225
1.232
V
2.45
2.465
V
1.225
1.232
V
2.45
2.519
V
1.186
1.225
1.260
V
2.373
2.45
2.519
V
1.186
1.218
2.436
1.225
1.225
2.45
2
1.26
V
1.23
V
2.46
V
5
ms
ms
7.19 I²C Timing Requirements
Unless otherwise noted, VDDIO = 3.6 V and minimum and maximum limits apply for T_J = 0°C to 125°C.⁽¹⁾
MIN
NOM
F_CLK
Clock frequency
t_BF
Bus-free time between START and STOP
1.3
t_HOLD
Hold time repeated START condition
0.6
t_CLK-LP
CLK low period
1.3
t_CLK-HP
CLK high period
0.6
t_SU
Set-up time repeated START condition
0.6
t_DATA-HOLD Data hold time
0
t_DATA-SU
Data set-up time
100
t_SU
Set-up time for STOP condition
0.6
Maximum pulse width of spikes that must be suppressed by the input filter
t_TRANS
of both data and CLK signals
50
T_J = 25°C
(1) These specifications are ensured by design.
MAX
400
UNIT
kHz
µs
µs
µs
µs
µs
µs
ns
µs
µs
14
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