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AS5043 Datasheet(PDF) 2 Page - ams AG

Part No. AS5043
Description  PROGRAMMABLE 360° MAGNETIC ANGLE ENCODER WITH ABSOLUTE SSI AND ANALOG OUTPUTS
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Maker  AMSCO [ams AG]
Homepage  http://www.ams.com
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AS5043 Datasheet(HTML) 2 Page - ams AG

 
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AS5043 Programmable 360° Magnetic Angle Encoder
Revision 1.4, 04-Apr-06
www.austriamicrosystems.com
Page 2 of 26
5 Pin Configuration
Figure 2: AS5043 pin configuration SSOP16
Package = SSOP16 (16 lead Shrink Small Outline Package)
Pin
Symbol
Type
Description
1
MagRngn
DO_OD
Magnet Field Magnitude RaNGe warning;
active low, indicates that the magnetic
field strength is outside of the
recommended limits.
2
Mode
DI_PD,
ST
Mode input. Select between low noise
(open, low) and high speed (high) mode.
Internal pull-down resistor
3
CSn
DI_PU,
ST
Chip Select, active low; Schmitt-Trigger
input, internal pull-up resistor (~50k
Ω)
4
CLK
DI,ST
Clock Input of Synchronous Serial
Interface; Schmitt-Trigger input
5
NC
-
must be left unconnected
6
DO
DO_T
Data Output of Synchronous Serial
Interface
7
VSS
S
Negative Supply Voltage (GND)
8
Prog_DI
DI_PD
OTP Programming Input and Data Input
for Daisy Chain mode. Internal pull-down
resistor (~74k
Ω).
Should be connected to VSS if
programming is not used
9
DACref
AI
DAC Reference voltage input for external
reference
10
DACout
AO
DAC output (unbuffered, Ri ~8k
Ω)
11
FB
AI
Feedback, OPAMP inverting input
12
Vout
AO
OPAMP output
13
NC
-
Must be left unconnected
14
NC
-
Must be left unconnected
15
VDD3V3
S
3V-Regulator Output for internal core,
regulated from VDD5V.Connect to
VDD5V for 3V supply voltage. Do not
load externally.
16
VDD5V
S
Positive Supply Voltage, 3.0 to 5.5 V
Table 1: Pin description SSOP16
DO_OD digital output open drain S
supply pin
DI_PD
digital input pull-down
DO_T digital output /tri-
state
DI_PU
digital input pull-up
ST
schmitt-trigger
input
AI
analog input
AO
analog output
DI
digital input
5.1
Pin Description
Pins 7, 15 and 16 are supply pins, pins 5, 13 and 14
are for internal use and must be left open.
Pin 1 is the magnetic field strength indicator,
MagRNGn. It is an open-drain output that is pulled to
VSS when the magnetic field is out of the
recommended range (45mT to 75mT). The chip will
still
continue
to
operate,
but
with
reduced
performance, when the magnetic field is out of range.
When this pin is low, the analog output at pins #10
and #12 will be 0V to indicate the out-of-range
condition.
Pin 2 MODE allows switching between filtered (slow)
and unfiltered (fast mode). See section 9.
Pin 3 Chip Select (CSn; active low) selects a device
for serial data transmission over the SSI interface. A
“logic high” at CSn forces output DO to digital tri-
state.
Pin 4 CLK is the clock input for serial data
transmission over the SSI interface (see section 8)
Pin 6 DO (Data Out) is the serial data output during
data transmission over the SSI interface (see section
8)
Pin 8 PROG_DI is used to program the different
operation modes, as well as the zero-position in the
OTP register.
This pin is also used as a digital input to shift serial
data through the device in Daisy Chain Configuration,
(see page 6).
Pin 9 DACref is the external voltage reference input
for the Digital-to-Analog Converter (DAC). If selected,
the analog output voltage on pin 12 (Vout) will be
ratiometric to the voltage on this pin.
Pin10 DACout is the unbuffered output of the DAC.
This pin may be used to connect an external OPAMP,
etc. to the DAC.
Pin 11 FB (Feedback) is the inverting input of the
OPAMP buffer stage.


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