Data Sheet

3
sensing.honeywell.com
Magnetoresistive Sensor ICs, Nanopower Series
HIGH SENSITIVITy • NANOPOWEr
Table 1A. Electrical Specifications (Vs = 1.65 V to 5.5 V, Ta = -40 °C to 85 °C [-40 °F to 185 °F], Typ. at 1.8 V, 25 °C [77 °F] unless otherwise specified.)
Characteristic Condition Min. Typ. Max. Unit
Supply voltage (Vs) Vs reference to ground 1.65 1.8 5.5 V
Awake current:
SM351LT
SM353LT
— —
0.3
1
0.8
5
5
mA
Awake time — — 15 — µs
Sleep current
—
Vs = 1.65 V
Vs = 1.8 V
Vs = 5.5 Vdc
—
—
—
—
0.2
0.16
0.2
2.6
8
0.8
1
8
µA
Sleep time — 30 100 180 ms
Average current:
SM351LT
SM353LT
0.015% duty cycle, typ. —
—
360
310
6640
6350
nA
Output voltage:
low (V
OL)
high (V
OH)
load current = 100 µA 0
Vs - 0.15
0.03
Vs - 0.03
0.15
Vs
V
NOTICE
ThesensorwillturnLOWwhenthemagneticeldispresentand
switchtoHIGHwhentheeldisremoved.Thesensorwilllatchand
hold the state during the sleep “mode”.
NOTICE
These magnetoresistive sensor ICs may have an initial output in
either the ON or OFF state if powered up with an applied magnetic
eldinthedifferentialzone(appliedmagneticeld>Brpand<Bop).
Honeywellrecommendsallowing10μsforoutputvoltagetostabilize
aftersupplyvoltagehasreacheditsnalratedvalue.
Table 1B. Electrical Specifications (Vs = 1.8 V, Ta = 25 °C [77 °F].)
Characteristic Condition Min. Typ. Max. Unit
Awake current:
SM351LT
SM353LT
— —
—
1
0.8
1.12
0.87
mA
Awake time — — 15 — µs
Sleep current — — 0.2 0.59 µA
Sleep time — 90 100 120 ms
Average current:
SM351LT
SM353LT
0.015% duty cycle, typ. —
—
350
350
620
600
nA