uzz9000 NXP Semiconductors, uzz9000 Datasheet - Page 7

• Manufacturer Part Number: uzz9000
• Description: Sensor Conditioning Electronics
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Angle range setting
To select one of 16 different angular ranges, an external
voltage (see Table 1) must be applied to pin 13 of the
UZZ9000 (Var). During the ICs initialisation phase, which
directly follows power-on reset or an external reset, this
voltage is read and then converted into the digital domain.
The digital value is stored until the next reset state occurs.
Consequently, the angular range cannot be changed
during normal operation but is still fixed after initialisation
phase. Note that the voltage at pin 13 must be ratiometric
to V
is ensured, for instance, when providing this voltage via a
(trimmable) resistor divider connected to V
the analog supply of the UZZ9000. The following defines
the % value of the supply voltage V
supplied to pin 13 to select a certain range. When using
the 30 angular range, a constant zero point offset of 15
is added. Consequently, when using the 30 range, the
zero point offset can be programmed between 10 and 20
only (see Zero point offset setting).
Table 1 Definition of voltages to set UZZ9000 angular
Zero point offset setting
voltage has to be applied to the UZZ9000 at pin 14
(VOFFIN). The function is similar to that described
2000 Nov 27
To adjust the zero point offset or to set it to 0 , an external
0 to 30
0 to 40
0 to 50
0 to 60
0 to 70
0 to 80
0 to 90
0 to 100
0 to 110
0 to 120
0 to 130
0 to 140
0 to 150
0 to 160
0 to 170
0 to 180
ANGULAR
Sensor Conditioning Electronic
RANGE
DDA
( )
and also stable over temperature and lifetime. This
ranges
33.47
35.69
37.91
40.14
42.36
44.58
46.80
49.02
51.25
53.47
55.69
57.91
60.13
62.36
64.58
66.80
MIN.
(%)
NOM.
33.73
35.95
38.17
40.40
42.62
44.84
47.06
49.28
51.51
53.73
55.95
58.17
60.39
62.62
64.84
67.06
(%)
DDA
that must be
MAX.
33.99
36.21
38.43
40.66
42.88
45.10
47.32
49.54
51.77
53.99
56.21
58.43
60.65
62.88
65.10
67.32
(%)
DDA
, which is
UNIT
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
(%)
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
7
previously. After reset the voltage is read, converted into
the digital domain and then stored until another reset state
occurs. Consequently, the zero point offset cannot be
adjusted without a reset. It is recommended to use a
resistor divider connected to V
Table 2 defines the allowed voltage ranges as a
percentage of the supply V
Table 2 Definition of voltages to set a certain zero point
Offset trimming
To achieve a linear output characteristic, it is necessary to
adapt the offsets of the two input signals to the input stage
of the UZZ9000. For this reason a sensor offset
cancellation procedure has been implemented in the
UZZ9000 which is started by sending a special serial data
protocol to the UZZ9000. This trimming procedure is
required for both input signals.
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5
4
3.5
3
2.5
2
1.5
1
0.5
OFFSET
5
POINT
ZERO
( )
offset
33.47
35.14
36.80
38.47
40.13
41.80
43.47
45.13
46.80
48.60
50.13
51.80
53.46
64.58
56.79
58.46
60.13
61.79
63.46
65.12
66.79
MIN.
(%)
DDA
DDA
NOM.
33.73
35.40
37.06
38.73
40.39
42.06
43.73
45.39
47.06
48.72
50.39
52.06
53.72
55.39
57.05
58.72
60.39
62.05
63.72
65.38
67.05
.
(%)
to generate this voltage.
Product specification
MAX.
33.99
35.66
37.32
38.99
40.65
42.32
43.99
45.65
47.32
48.98
50.65
52.32
53.98
55.65
57.31
58.98
60.65
62.31
63.98
65.64
67.31
UZZ9000
(%)
UNIT
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
(%)
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA
DDA