Datasheet

AD2S1205
Rev. A | Page 4 of 20
Parameter Min Typ Max Unit Conditions/Comments
Degradation of Signal (DOS)
Sin/Cos Threshold 4.0 4.09 4.2 V p-p DOS goes low when Sin or Cos exceeds threshold
Angular Accuracy (Worst Case) 33 Degrees DOS indicated before angular output error exceeds limit
Angular Latency (Worst Case) 66 Degrees Maximum electrical rotation before DOS is indicated
Time Latency 125 μs
Sin/Cos Mismatch 385 420 mV
DOS latched low when Sin/Cos amplitude mismatch
exceeds threshold
Loss of Tracking (LOT)
Tracking Threshold 5 Degrees
LOT goes low when internal error signal exceeds
threshold; guaranteed by design
Time Latency 1.1 ms
Hysteresis 4 Degrees Guaranteed by design
VOLTAGE REFERENCE
REFOUT 2.39 2.47 2.52 V ±I
OUT
= 100 μA
Drift 70 ppm/°C
PSRR −60 dB
CHARGE-PUMP OUTPUT (CPO)
Frequency 204.8 kHz Square wave output, CLKIN = 8.192 MHz
Duty Cycle 50 %
POWER SUPPLY
I
DD
Dynamic 20 mA
ELECTRICAL CHARACTERISTICS
V
IL
, Voltage Input Low 0.8 V
V
IH
, Voltage Input High 2.0 V
V
OL
, Voltage Output Low 0.4 V +1 mA load
V
OH
, Voltage Output High 4.0 V −1 mA load
I
IL
, Low Level Input Current
(Non-Pull-Up)
−10 +10 μA
SAMPLE
, CS, RDVEL, CLKIN, SOE pins
I
IL
, Low Level Input Current (Pull-Up) −80 +80 μA
RD
, FS1, FS2, RESET pins
I
IH
, High Level Input Current −10 +10 μA
I
OZH
, High Level Three-State Leakage −10 +10 μA
I
OZL
, Low Level Three-State Leakage −10 +10 μA
1
The voltages for Sin, SinLO, Cos, and CosLO relative to AGND must be between 0.2 V and AV
DD
.