AD2S1205WSTZ View Datasheet(PDF) - Analog Devices

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Description

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AD2S1205WSTZ

12-Bit RDC with Reference Oscillator

Analog Devices 

AD2S1205

SPECIFICATIONS

AVDD = DVDD = 5.0 V ± 5% at −40°C to +125°C, CLKIN = 8.192 MHz ± 25%, unless otherwise noted.

Table 1.

Parameter

Sin, Cos INPUTS1

Voltage

Input Bias Current

Input Impedance

Common-Mode Voltage

Phase-Lock Range

ANGULAR ACCURACY

Angular Accuracy

Resolution

Linearity INL

Linearity DNL

Repeatability

Hysteresis

VELOCITY OUTPUT

Velocity Accuracy

Resolution

Linearity

Offset

Dynamic Ripple

DYNAMIC PERFORMANCE

Bandwidth

Tracking Rate

Acceleration Error

Settling Time 179° Step Input

EXC, EXC OUTPUTS

Voltage

Center Voltage

Frequency

EXC/EXC DC Mismatch

THD

FAULT DETECTION BLOCK

Loss of Signal (LOS)

Sin/Cos Threshold

Angular Accuracy (Worst Case)

Angular Latency (Worst Case)

Time Latency

Min Typ Max Unit

Conditions/Comments

2.3 3.15 4.0 V p-p

12 μA

0.35

MΩ

100 mV peak

−44

+44 Degrees

Sinusoidal waveforms, Sin − SinLO and Cos − CosLO,

differential inputs

VIN = 4.5 VDC, CLKIN = 10.24 MHz

VIN = 4.5 VDC

CMV with respect to REFOUT/2 at 10 kHz

Sin/Cos vs. EXC output

±11 Arc minutes Zero acceleration, Y grade

±22 Arc minutes Zero acceleration, W grade

12

Bits

Guaranteed no missing codes

2

LSB

Zero acceleration, 0 rps to 1250 rps, CLKIN = 10.24 MHz

0.3 LSB

Guaranteed monotonic

1

LSB

1

LSB

2

LSB

11

Bits

1

LSB

0

1

LSB

1

LSB

Zero acceleration

Guaranteed by design, 2 LSB maximum

Zero acceleration

Zero acceleration

1000

30

2400

750

1000

1250

5.2

4.0

Hz

rps

rps

rps

Arc minutes

ms

ms

CLKIN = 6.144 MHz , guaranteed by design

CLKIN = 8.192 MHz , guaranteed by design

CLKIN = 10.24 MHz , guaranteed by design

At 10,000 rps, CLKIN = 8.192 MHz

To within ±11 arc minutes, Y grade, CLKIN = 10.24 MHz

To within 1 degree, Y grade, CLKIN = 10.24 MHz

3.34 3.6 3.83 V p-p

2.39 2.47 2.52 V

10

kHz

12

kHz

15

kHz

20

kHz

35 mV

−58

dB

Load ±100 μA

FS1 = high, FS2 = high, CLKIN = 8.192 MHz

FS1 = high, FS2 = low, CLKIN = 8.192 MHz

FS1 = low, FS2 = high, CLKIN = 8.192 MHz

FS1 = low, FS2 = low, CLKIN = 8.192 MHz

First five harmonics

2.18 2.24 2.3

57

V p-p

Degrees

114 Degrees

125 μs

DOS and LOT go low when Sin or Cos fall below threshold

LOS indicated before angular output error exceeds limit

(4.0 V p-p input signal and 2.18 V LOS threshold)

Maximum electrical rotation before LOS is indicated

(4.0 V p-p input signal and 2.18 V LOS threshold)

Rev. A | Page 3 of 20

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