AS5045-ASST austriamicrosystems, AS5045-ASST Datasheet - Page 22

• Manufacturer Part Number: AS5045-ASST
• Description: IC ENCODER PROG 12-BIT 16-SSOP
• Manufacturer: austriamicrosystems
• Type: Linear, Rotary Encoder - Programmabler

Specifications of AS5045-ASST

• Sensing Range: 45mT ~ 75mT
• Voltage - Supply: 3 V ~ 3.6 V, 4.5 V ~ 5.5 V
• Current - Supply: 21mA
• Current - Output (max): 4mA
• Output Type: Digital, PWM, 12-Bit Serial
• Features: Programmable
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 16-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AS5045-ASSTTR

AS5045
Data Sheet
13 3.3V / 5V Operation
The AS5045 operates either at 3.3V ±10% or at 5V ±10%. This is made possible by an internal 3.3V Low-Dropout
(LDO) Voltage regulator. The internal supply voltage is always taken from the output of the LDO, meaning that the
internal blocks are always operating at 3.3V.
For 3.3V operation, the LDO must be bypassed by connecting VDD3V3 with VDD5V (see Figure 16).
For 5V operation, the 5V supply is connected to pin VDD5V, while VDD3V3 (LDO output) must be buffered by a
2.2...10µF capacitor, which is supposed to be placed close to the supply pin (see Figure 16).
The VDD3V3 output is intended for internal use only It must not be loaded with an external load (see Figure 16).
Figure 16. Connections for 5V / 3.3V Supply Voltages
A buffer capacitor of 100nF is recommended in both cases close to pin VDD5V. Note that pin VDD3V3 must always
be buffered by a capacitor. It must not be left floating, as this may cause an instable internal 3.3V supply voltage
which may lead to larger than normal jitter of the measured angle.
www.austriamicrosystems.com
4.5 - 5.5V
5V Operation
100n
VDD5V
VSS
LDO
VDD3V3
2.2...10µF
Internal
VDD
N
E
R
A
C
E
T
F
I
DO
PWM
CLK
CSn
Prog
Revision 1.7
3.0 - 3.6V
3.3V Operation
VDD5V
VSS
LDO
VDD3V3
Internal
VDD
N
R
C
T
E
F
A
E
I
DO
PWM
CLK
CSn
Prog
100n
22 – 33