DRV421_15 Datasheet, PDF (6/44 Pages) Texas Instruments – DRV421 Integrated Magnetic Fluxgate Sensor for Closed-Loop Current Sensing

DRV421
SBOS704A – MAY 2015 – REVISED JULY 2015
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Electrical Characteristics (continued)
All minimum and maximum specifications at T_A = +25°C, V_DD = 3.0 V to 5.5 V, and I_COMP1 = I_COMP2 = 0 mA (unless otherwise
noted). Typical values are at V_DD = 5.0 V.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
VOLTAGE REFERENCE
RSEL[1:0] = 00, no load
2.45
2.5
2.55
V
V_REFOUT
Reference output voltage at pin REFOUT RSEL[1:0] = 01, no load
RSEL[1:0] = 1x, no load
1.6
1.65
1.7
V
45
50
55 % of VDD
Reference output voltage drift
RSEL[1:0] = 00, 01
–50
±10
50 ppm/°C
Voltage divider gain error drift
RSEL[1:0] = 1x
–50
±10
50 ppm/°C
PSRR_REF Power-supply rejection ratio
Load regulation
I_SC
Short-circuit current
RSEL[1:0] = 00, 01
RSEL[1:0] = 0x, load to GND or VDD,
ΔI_LOAD = 0 mA to 5 mA, T_A = –40°C to +125°C
RSEL[1:0] = 1x, load to GND or VDD,
ΔI_LOAD = 0 mA to 5 mA, T_A = –40°C to +125°C
REFOUT connected to VDD
REFOUT connected to GND
–300
±15
300 µV/V
0.15
0.35 mV/mA
0.3
0.8 mV/mA
20
mA
–18
mA
DIGITAL INPUTS/OUTPUTS
Logic Inputs (CMOS)
V_IH
High-level input voltage
V_IL
Low-level input voltage
Input leakage current
T_A = –40°C to +125°C
T_A = –40°C to +125°C
0.7 × VDD
–0.3
VDD + 0.3
V
0.3 × VDD
V
0.01
µA
Logic Outputs (Open-Drain)
V_OH
High-level output voltage
V_OL
Low-level output voltage
POWER SUPPLY
4-mA sink
Set by external pull-up resistor
V
0.3
V
I_Q
V_RST
Quiescent current
Power-on reset threshold
I_ICOMP1 = I_ICOMP2 = 0 mA, 3.0 V ≤ V_DD ≤ 3.6 V,
T_A = –40°C to +125°C
I_ICOMP1 = I_ICOMP2 = 0 mA, 4.5 V ≤ V_DD ≤ 5.5 V,
T_A = –40°C to +125°C
6.5
9
mA
8.1
11
mA
2.4
V
6
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