EVAL-AD1556 AD [Analog Devices], EVAL-AD1556 Datasheet

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EVAL-AD1556

Manufacturer Part Number
EVAL-AD1556
Description
Evaluation Board AD1555/1556 24-Bit ADC
Manufacturer
AD [Analog Devices]
Datasheet
FEATURES :
GENERAL DESCRIPTION
The EVAL-AD1555/56EB is an evaluation board for the
AD1555 and AD1556 24-bit - ADC chip-set. The
AD1555/AD1556 chip-set can convert a high dynamic range
input signal, operates from +5V and -5V supplies and uses a
serial interface.
The AD1555/AD1556 evaluation board is designed to
demonstrate the ADC's performance and operation. A full
description of the AD1555/AD1556 is available in the
AD1555/AD1556 data sheet and should be consulted when
utilizing this evaluation board.
REV. PrD
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for
its use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
On-Board Reference, Oscillator, Control Logic and
Easy interface to printer port of PC
PC Software for Control and Data Analysis
Stand Alone Capability to ease design
Analog and Digital Prototype Area
Buffers
Preliminary Technical Data
PGA_M OD
Ain
Tin
PRELIMINARY TECHNICAL DATA
+5V
PGA
SJ3
AD1555
- 5V
Ref
Σ ∆
mod
SJ2
+5V
FUNCTIONAL BLOCK DIAGRAM
AD1556
SJ1
AD1555/AD1556 24-Bit - ADC
+5V
The EVAL-AD1555/56EB is ideal for use either as a stand-
alone evaluation board to interface with a customer applica-
tion or with any compatible PC using the parallel printer port.
On-board components include an AD780 3V ultra low noise
bandgap reference, a crystal oscillator, and digital control
logic. The board has both a Centronics male connector to
interface with PC printer port and a 50-pin connector for
stand-alone operation.
Software is provided to allow simple demonstration and
evaluation of the AD1555/AD1556 chip-set.
One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.
Tel: 617/329-4700
50-Way connector
oscillator
EVAL-AD1555/56EB
FPG A
Evaluation Board
25-WAY D-Type
connector
Fax: 617/326-8703

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EVAL-AD1556 Summary of contents

Page 1

... No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. AD1555/AD1556 24-Bit - ADC The EVAL-AD1555/56EB is ideal for use either as a stand- alone evaluation board to interface with a customer applica- tion or with any compatible PC using the parallel printer port. ...

Page 2

... EVAL-AD1555/56EB software. The EVAL-AD1555/56EB software installation process is: - Run Setup.exe using the EVAL-AD1555/56EB disk 1 and follow the instructions. The files can be stored in any direc- tory at the user convenience using the destination folder field. ...

Page 3

... Using the EVAL-AD1555/56B in the customized system : The EVAL-AD1555/56EB is also designed to ease the evaluation and the design of the AD1555 and the AD1556 in the customized system. The useful interface signals can be connected to the customized system using the connector P2. The switch SW1 in the position where the identification dot ...

Page 4

... PRELIMINARY TECHNICAL DATA EVAL-AD1555/AD1556 Step 1 Start execution: click on the double-arrows icon to start execution. Display window : displays either Time domain or Frequency domain or Histogram and/or performance values such as dynamic range, equivalent input noise level, THD and DC offset. Step 5 Display menu : selects Time/Frequency domain or histogram, controls display parameters ( scales, zoom, cursor ...

Page 5

... The number of harmonics uses in the THD computation is selectable. Figure 2. Frequency domain screen with measurements. REV. PrD EVAL-AD1555/AD1556 Measurements display : This window displays the measure- ments. When a signal approximately at least 10 times higher than the noise floor is detected, the THD is measured otherwise, the dynamic range and equivalent input noise are displayed ...

Page 6

... PRELIMINARY TECHNICAL DATA EVAL-AD1555/AD1556 Figure 3. Time domain screen with AD1556 Status register content. Status Register display : This window displays each bit of the AD1556 status register. The displayed value is the status register value corresponding to the data value marked with the cursor in the time domain display. ...

Page 7

... PRELIMINARY TECHNICAL DATA REV. PrD EVAL-AD1555/AD1556 Figure 4. Schematics. – 7 – ...

Page 8

... PRELIMINARY TECHNICAL DATA EVAL-AD1555/AD1556 Figure 5. Top side silk-screen ( not to scale). Figure 6. Top layer ( not to scale). – 8 – REV. PrD ...

Page 9

... PRELIMINARY TECHNICAL DATA REV. PrD Figure 7. Bottom side silk-screen ( not to scale). Figure 8. Bottom layer ( not to scale). – 9 – EVAL-AD1555/AD1556 ...

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