KMA200 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 8 — 7 December 2011 8 of 33
NXP Semiconductors
KMA200
Programmable angle sensor
7. Outputs of KMA200
The output of the KMA200 is either digital or analog, depending on the control word stored
in the EEPROM. The analog output consists of a standard and a programmable output
stage. The programmable output stage allows four different characteristics; mode 1,
mode 2, mode 3 or none output. The digital output has two different modes; mode 5 and
mode 6.
Analog output
In the analog output mode the measured angle value is converted linear into a value that
is ratiometric to the supply voltage V
DD
. This voltage is driven by the standard output
stage to pin DATA/OUT1. The same value is fed to a second output stage that is
connected to pin CLK/OUT2. This second output stage is programmable to one of four
different output characteristics; mode 1, mode 2, mode 3 or high-impedance state output.
A valid angle value is nominally mapped to an output voltage range of V
(CL)l
(default = 5 %) to V
(CL)u
(default = 95 %) of V
DD
at the standard output V
OUT1
(see Figure 3
).
For mode 1 the valid output voltage range at pin CLK/OUT2 is identical to the output
voltage range of the standard analog voltage but the output characteristic is inverted
(see Figure 4
).
In mode 2 (see Figure 5
) the valid output range at pin CLK/OUT2 is nominally V
(CL)l
/2 to
V
(CL)u
/2 of V
DD
.
A further possibility is to program the V
OUT2
(mode 3,
thresh
) as a comparator depending
from the angle value (see Figure 6
).
When the KMA200 detects an error condition, it switches the analog outputs into
high-impedance state. The outputs are forced to lie in the upper or lower diagnostic range
by the external pull-up or pull-down resistors.
Table 5. Setting the KMA200 output characteristics
Output characteristics Pin assignment Mode setting of EEPROM
(ctrl1)
Mode Type DATA/OUT1 CLK/OUT2 OM2 OM1 OM0
Mode 1 analog standard inverted 1 0 0
Mode 2 analog standard half range 1 0 1
Mode 3 analog standard comparator 1 1 0
Mode 4 analog standard high-impedance state 1 1 1
Mode 5 digital serial data (SPI) (clock) 0 0 0
Mode 6 digital bit complement
serial data (SPI)
(clock) 001
