am8192b RLS, am8192b Datasheet - Page 4

• Manufacturer Part Number: am8192b
• Description: Angular Magnetic Encoder Ic
• Manufacturer: RLS

Data sheet
AM8192BD01_05
th
Issue 5, 14
January 2009
Pin 1 (Prg) is used for OTP (One Time Programming) of the chip. The OTP is carried out at the factory and
defines the behavior and accuracy of the AM8192B. In operation pin 1 (Prg) must be left unconnected.
Pin 2 (Error) is an analogue output signal. It can be used for monitoring the alignment between the AM8192B
and the magnet. See the “Analogue error signal (Error)” section on page 16 for detailed information.
Pins 3 and 4 are Cosine and Sine output signals for monitoring and filtering. A low-pass filter can be made
with an external capacitor as there is a built-in 10 kΩ serial resistor. Recommended value for filtering is a
22 nF capacitor connected to V
. Capacitor values can be reduced if noise is not an important issue. These
ss
outputs can be used for monitoring the signals.
Pin 5 (RiIN) is the negative analogue input of the built-in interpolator. It enables the reference mark output in
incremental mode. It must be connected to Vref (pin 16) to be enabled.
Pin 6 (SinIP) is the positive analogue input of the built-in interpolator for the sine signal. It must be connected
to the Sin signal (pin 4).
Pin 7 (SinIN) is the negative analogue input of the built-in interpolator for the sine signal. It must be connected
to Vref (pin 16).
Pin 8 (CosIP) is the positive analogue input of the built-in interpolator for the cosine signal. It must be
connected to the Cos signal (pin 3).
Pin 9 (CosIN) is the negative analogue input of the built-in interpolator for the cosine signal. It must be
connected to Vref (pin 16).
Pins 10, 14, 24, 27, 33 are power supply pins and must be connected to V
.
dd
Pins 11, 15, 23, 25, 26, 30, 31, 32, 43 are power supply pins and must be connected to V
.
ss
Pins 12, 13, 17, 21, 22 are back plane pins and must be connected to V
.
ss
Pin 16 (Vref) is the interpolator reference voltage generator. The voltage value is 1/2 of V
.
dd
Pin 18 (A) is the quadrature incremental output A.
Pin 19 (B) is the quadrature incremental output B.
Pin 20 (Ri) is the quadrature incremental reference mark output.
Pin 28 (BSI) is used for factory testing. In operation this pin must be left unconnected.
Pin 29 (Clock) is a digital input for serial SSI communication. See the “Binary synchronous serial output SSI”
section on page 8 for detailed information.
Pin 34 (Agnd) is a reference voltage for analogue signals and must be connected to Vref (pin 16).
Pin 35 (Agndi) must be left unconnected.
Pin 36 (Ihall) is used to define the system sensitivity. When a resistor (R
) is connected from pin 36 (Ihall) to
Ihall
V
a hall sensor bias current is defined. Recommended value for R
is 10 kΩ.
dd
Ihall
Pin 37 (Data) is a digital output for serial SSI communication. See the “Binary synchronous serial output SSI”
section on page 8 for detailed information.
Pin 38 (EEsda) is the data line of the EEPROM interface and must be connected to EEsda (pin 38).
Pin 39 (EEscl) is the clock line of the EEPROM interface and must be connected to EEscl (pin 39).
Pin 40 (Nerr) is a digital error output. If no error is present the output is high.
Pin 41 (RiIP) is the positive analogue input of the built-in interpolator. It enables the reference mark output in
incremental mode. It must be connected to V
to be enabled.
dd
Pin 42 (Iboh) is used to define the sensors amplifiers bias current. A resistor (R
) must be connected
Iboh
between pin 42 (Iboh) and V
. The value for R
is 75 kΩ.
ss
Iboh
Pin 44 (Prog) is used for OTP (One Time Programming) of the chip. The OTP is carried out at the factory and
defines the behavior and accuracy of the AM8192B. This pin must be connected to V
.
ss
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A
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