FLUXGATE SENSOR FRONT-END |
|
Offset (1) |
No magnetic field |
–8 |
±2 |
8 |
µT |
|
Offset drift |
No magnetic field |
|
±5 |
|
nT/°C |
|
Noise |
f = 0.1 Hz to 10 Hz |
|
17 |
|
nTrms |
|
Noise density |
f = 1 kHz |
|
1.5 |
|
nT/√Hz |
|
Saturation trip level for pin ER |
|
|
1.7 |
|
mT |
AOL |
DC open-loop gain |
|
|
16 |
|
V/µT |
|
AC open-loop gain |
GSEL[1:0] = 00, at 3.8 kHz, integration-to-flatband corner frequency |
|
8.5 |
|
V/mT |
GSEL[1:0] = 01, at 3.8 kHz, integration-to-flatband corner frequency |
|
38 |
|
GSEL[1:0] = 10, at 1.9 kHz, integration-to-flatband corner frequency |
|
25 |
|
GSEL[1:0] = 11, at 1.9 kHz, integration-to-flatband corner frequency |
|
70 |
|
IICOMP |
Peak current at pins ICOMP1 and ICOMP2 |
VICOMP1 – VICOMP2 = 4.2 VPP,VDD = 5 V, TA = –40°C to +125°C |
210 |
250 |
|
mA |
VICOMP1 – VICOMP2 = 2.5 VPP, VDD = 3.3 V, TA = –40°C to +125°C |
125 |
150 |
|
VICOMP |
Voltage swing at pins ICOMP1 and ICOMP2 |
20-Ω load, VDD = 5 V, TA = –40°C to +125°C |
4.2 |
|
|
VPP |
20-Ω load, VDD = 3.3 V, TA = –40°C to +125°C |
2.5 |
|
|
|
Common-mode output voltage at pins ICOMP1 and ICOMP2 |
|
|
VREFOUT |
|
V |
SHUNT SENSE AMPLIFIER |
VOO |
Output offset voltage |
VAINP = VAINN = VREFIN, VDD = 3.0 V |
–0.075 |
±0.01 |
0.075 |
mV |
|
Output offset voltage drift |
|
–2 |
±0.4 |
2 |
µV/°C |
CMRR |
Common-mode rejection ratio, RTO (2) |
VCM = −1 V to VDD + 1 V, VREFIN = VDD / 2 |
–250 |
±50 |
250 |
µV/V |
PSRRAMP |
Power-supply rejection ratio, RTO |
VDD = 3.0 V to 5.5 V, VCM = VREFIN |
–50 |
±4 |
50 |
µV/V |
VIC |
Common-mode input voltage range |
|
–1 |
|
VDD + 1 |
V |
ZIND |
Differential input impedance |
|
16.5 |
20 |
23.5 |
kΩ |
ZIC |
Common-mode input impedance |
|
40 |
50 |
60 |
kΩ |
G |
Gain, VOUT / (VAINP – VAINN) |
|
|
4 |
|
V/V |
EG |
Gain error |
|
–0.3% |
±0.02% |
0.3% |
|
|
Gain error drift |
|
–5 |
±1 |
5 |
ppm/°C |
|
Linearity error |
RL = 1 kΩ |
|
12 |
|
ppm |
|
Voltage output swing from negative rail (OR pin trip level) |
VDD = 5.5 V, IVOUT = 2.5 mA |
|
48 |
85 |
mV |
VDD = 3.0 V, IVOUT = 2.5 mA |
|
56 |
100 |
|
Voltage output swing from positive rail (OR pin trip level) |
VDD = 5.5 V, IVOUT = –2.5 mA |
VDD – 85 |
VDD – 48 |
|
mV |
VDD = 3.0 V, IVOUT = –2.5 mA |
VDD – 100 |
VDD – 56 |
|
ISC |
Short-circuit current |
VOUT connected to GND |
|
–18 |
|
mA |
VOUT connected to VDD |
|
20 |
|
|
Signal overrange indication delay (OR pin) |
VIN = 1-V step |
|
2.5 to 3.5 |
|
µs |
BW–3dB |
Bandwidth |
|
|
2 |
|
MHz |
SR |
Slew rate |
|
|
6.5 |
|
V/µs |
|
Settling time, large-signal |
ΔV = ± 2 V to 1% accuracy, no external filter |
|
0.9 |
|
µs |
|
Settling time, small-signal |
ΔV = ± 0.4 V to 0.01% accuracy |
|
8 |
|
µs |
en |
Output voltage noise density, RTO |
f = 1 kHz, compensation loop disabled |
|
170 |
|
nV/√Hz |
VREFIN |
Input voltage range at pin REFIN |
TA = –40°C to +125°C |
GND |
|
VDD |
V |
VOLTAGE REFERENCE |
VREFOUT |
Reference output voltage at pin REFOUT |
RSEL[1:0] = 00, no load |
2.45 |
2.5 |
2.55 |
V |
RSEL[1:0] = 01, no load |
1.6 |
1.65 |
1.7 |
RSEL[1:0] = 1x, no load |
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 |
PSRRREF |
Power-supply rejection ratio |
RSEL[1:0] = 00, 01 |
–300 |
±15 |
300 |
µV/V |
|
Load regulation |
RSEL[1:0] = 0x, load to GND or VDD, ΔILOAD = 0 mA to 5 mA, TA = –40°C to +125°C |
|
0.15 |
0.35 |
mV/mA |
RSEL[1:0] = 1x, load to GND or VDD, ΔILOAD = 0 mA to 5 mA, TA = –40°C to +125°C |
|
0.3 |
0.8 |
ISC |
Short-circuit current |
REFOUT connected to VDD |
|
20 |
|
mA |
REFOUT connected to GND |
|
–18 |
|
DIGITAL INPUTS/OUTPUTS |
Logic Inputs (CMOS) |
VIH |
High-level input voltage |
TA = –40°C to +125°C |
0.7 × VDD |
|
VDD + 0.3 |
V |
VIL |
Low-level input voltage |
TA = –40°C to +125°C |
–0.3 |
|
0.3 × VDD |
V |
|
Input leakage current |
|
|
0.01 |
|
µA |
Logic Outputs (Open-Drain) |
VOH |
High-level output voltage |
|
Set by external pull-up resistor |
V |
VOL |
Low-level output voltage |
4-mA sink |
|
0.3 |
|
V |
POWER SUPPLY |
IQ |
Quiescent current |
IICOMP1 = IICOMP2 = 0 mA, 3.0 V ≤ VDD ≤ 3.6 V, TA = –40°C to +125°C |
|
6.5 |
9 |
mA |
IICOMP1 = IICOMP2 = 0 mA, 4.5 V ≤ VDD ≤ 5.5 V, TA = –40°C to +125°C |
|
8.1 |
11 |
VRST |
Power-on reset threshold |
|
|
2.4 |
|
V |