AD2S83

REV. E

–18–

APPLICATIONS

Control Transformer

The ratio multiplier of the AD2S83 can be used independently

of the loop integrators as a control transformer. In this mode,

the resolver inputs

θ are multiplied by a digital angle φ, any

difference between

φ and θ will be represented by the AC

ERROR output as Sin

ωt sin (θ–φ) or the DEMOD output

as sin (

θ–φ). To use the AD2S83 in this mode refer to the

“Control Transformer” application note.

OTHER PRODUCT

AD2S90. Low-cost resolver-to-digital converter with outputs

which emulate optical encoders and a serial output for absolute

position information. Unlike the AD2S83, the AD2S90 requires

no external components to operate. The AD2S90 is built on

LC

AD2S80A/AD2S81A/AD2S82A. Monolithic resolver-to-digital

converter. The AD2S80/AD2S82A offer selectable 10, 12, 14,

16 bits of resolution. The AD2S81A has 12-bit resolution. All

devices have user selectable dynamics. The AD2S80A is available

in 40-lead DDIP, 44-lead LCC and is qualified to MIL-STD-

883B REV. E. The is available in a 44-lead PLCC, and the

AD2S81A in a 28-lead DDIP.