TLE4921-3U Datasheet, PDF (7/19 Pages) Infineon Technologies AG – Dynamic Differential Hall Effect Sensor IC

TLE 4921-3U
AC/DC Characteristics (cont’d)
Parameter
Symbol Limit Values Unit Test Condition Test
min. typ. max.
Circuit
Output fall time
Delay time³⁾
Filter input
resistance
t_f
–
– 0.5 µs I_Q = 40 mA
1
C_L = 10 pF
t_dop
–
– 25 µs f = 10 kHz
2
t_drp
–
– 10 µs ∆B = 5 mT
t_dop - t_drp –
0 15 µs
R_C
32 40 48 kΩ 25 °C ± 2 °C 1
Filter sensitivity to S_C
–
–4 –
mV/ –
1
∆B
mT
Filter bias voltage V_C
0.8 – 2.2 V ∆B = 0
1
Frequency
f
4)
– 20000 Hz ∆B = 5 mT
2
Resistivity against ∆B_m
– 0.1 – 0.1 mT F = 2 N
2⁵⁾
mechanical stress ∆B_Hy – 0.1
0.1 mT
(piezo)
1) _{Leakage currents at pin 4 should be avoided. The bias shift of Bm caused by a leakage current IL can be}
calculated by:∆B_m
=
-^I--^L-----^×------^R----^C----⁽--^T-----⁾
S_C(T)
.
2) _{For higher ∆B the values may exceed the limits like following | ∆Bm | < | 0.05 × ∆B |}
3) _{For definition see page 16.}
4) _{Depends on filter capacitor CF. The cut-off frequency is given by f = -2---π-----×-----R--}¹_{--C-----×-----C----F--. The switching points are}
guaranteed over the whole frequency range, but amplitude modification and phase shift due to the 1^st order
highpass filter have to be taken into account.
5) _{See page 17.}
Note: The listed characteristics are ensured over the operating range of the integrated
circuit. Typical characteristics specify mean values expected over the production
spread. If not otherwise specified, typical characteristics apply at T_j = 25 °C and
the given supply voltage.
Data Sheet
7
2000-07-01