AD2S1205WSTZ - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD2S1205WSTZ
Manufacturer

ADI
ChipWorker Part#

CW114221
Category

Analog to Digital, ADC IC
Package

LQFP-44
Description

ANALOG DEVICES AD2S1205WSTZ Analog to Digital Converter, 12Bit, 20KSPS, Single, 4.75V, 5.25V, LQFP
Documentation

Datasheet

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AD2S1205WSTZ Specifications

Attribute	Attribute Value

Part Number	AD2S1205WSTZ
Manufacturer	ADI
ChipWorker Part#	CW114221
Category	Analog to Digital, ADC IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	44 Pin
Case/Package	LQFP-44
Supply Voltage (DC)	5.00 V
Number of Channels	2 Channel
Number of Positions	44 Position
Number of Bits	12 Bit
Power Dissipation	50.0 mW
Sample Rate	20.0 kHz
Resolution (Bits)	12.0 Bit
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	4.75V ~ 5.25V
Supply Voltage (Max)	5.25 V
Supply Voltage (Min)	4.75 V
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Size-Height	1.4 mm
Operating Temperature	-40℃ ~ 125℃
Product Lifecycle Status	Active
Packaging	Tray
RoHS	RoHS Compliant
Lead-Free Status	PB free
REACH SVHC Compliance	No SVHC
ECCN Code	EAR99

Product Description

Product Details
The AD2S1205 is a complete 12-bit resolution tracking resolver-to-digital converter that contains an on-board programmable sinusoidal oscillator providing sine wave excitation for resolvers.
The converter accepts 3.15 V p-p ± 27% input signals on the Sin and Cos inputs. A Type II tracking loop is employed to track the inputs and convert the input Sin and Cos information into a digital representation of the input angle and velocity. The maximum tracking rate is a function of the external clock frequency. The performance of the AD2S105 is specified across a frequency range of 8.192 MHz ± 25%, allowing a maximum tracking rate of 1250 rps.
**Product Highlights**
1. Ratiometric Tracking Conversion. The Type II tracking loop provides continuous output position data without conversion delay. It also provides noise immunity and tolerance of harmonic distortion on the reference and input signals.
2. System Fault Detection. A fault detection circuit can sense loss of resolver signals, out-of-range input signals, input signal mismatch, or loss of position tracking.
3. Input Signal Range. The Sin and Cos inputs can accept differential input voltages of 3.15 V p-p ± 27%.
4. Programmable Excitation Frequency. Excitation frequency is easily programmable to 10 kHz, 12 kHz, 15 kHz, or 20 kHz by using the frequency select pins (the FS1 and FS2 pins).
5. Triple Format Position Data. Absolute 12-bit angular position data is accessed via either a 12-bit parallel port or a 3-wire serial interface. Incremental encoder emulation is in standard A-quad-B format with direction output available.
6. Digital Velocity Output. 12-bit signed digital velocity accessed via either a 12-bit parallel port or a 3-wire serial interface.
**Applications**
* Automotive motion sensing and control
* Hybrid-electric vehicles
* Electric power steering
* Integrated starter generator/alternator
* Industrial motor control
* Process control
Data Sheet, Rev. 0, 1/07
### Features and Benefits
Complete monolithic resolver-to-digital converter (RDC)
Parallel and serial 12-bit data ports
System fault detection
±11 arc minutes of accuracy
Input signal range: 3.15 V p-p ± 27%
Absolute position and velocity outputs
1250 rps maximum tracking rate,
12-bit resolution
Incremental encoder emulation
(1024 pulses/rev)
Programmable sinusoidal oscillator on board
Single-supply operation (5.00 V ± 5%)
−40°C to +125°C temperature rating
44-lead LQFP

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