iC-TW8 16-BIT SIN/COS INTERPOLATOR
WITH AUTO-CALIBRATION
Rev A2, Page 6/12
PIN FUNCTIONS
No. Name
I/O
Function
Description
45 VREF
Analog out
Bias Output
Decouple with 1 µF capacitor to AVSS. Do not inject noise into this pin
as it directly impacts ADC conversion noise.
46 AVSS
47 ZERO+
48 ZERO-
Ground
Analog Ground
Zero Input +
Zero Input -
Pin must be tied to high quality ground, usually a solid PCB plane.
Analog in
Analog in
Differential Zero Gating Input.
If single ended signal sources are used, the unused terminal (either
ZERO+ or ZERO-) must be tied to an appropriate DC bias.