EVAL-AD5449EBZ Analog Devices Inc, EVAL-AD5449EBZ Datasheet

BOARD EVALUATION FOR AD5449

EVAL-AD5449EBZ

Manufacturer Part Number
EVAL-AD5449EBZ
Description
BOARD EVALUATION FOR AD5449
Manufacturer
Analog Devices Inc
Datasheets

Specifications of EVAL-AD5449EBZ

Number Of Dac's
2
Number Of Bits
12
Outputs And Type
2, Differential
Sampling Rate (per Second)
2.47M
Data Interface
Serial
Settling Time
80ns
Dac Type
Current
Voltage Supply Source
Single
Operating Temperature
-40°C ~ 125°C
Utilized Ic / Part
AD5449
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
10 MHz multiplying bandwidth
INL of ±0.25 LSB @ 8 bits
16-lead TSSOP package
2.5 V to 5.5 V supply operation
±10 V reference input
50 MHz serial interface
2.47 MSPS update rate
Extended temperature range: −40°C to +125°C
4-quadrant multiplication
Power-on reset
0.5 μA typical current consumption
Guaranteed monotonic
Daisy-chain mode
Readback function
APPLICATIONS
Portable battery-powered applications
Waveform generators
Analog processing
Instrumentation applications
Programmable amplifiers and attenuators
Digitally controlled calibration
Programmable filters and oscillators
Composite video
Ultrasound
Gain, offset, and voltage trimming
1
Rev. C
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 that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
U.S. Patent Number 5,689,257.
SYNC
SCLK
SDIN
SDO
CLR
V
DD
AD5429/AD5439/AD5449
REGISTER
POWER-ON
SHIFT
RESET
FUNCTIONAL BLOCK DIAGRAM
Multiplying DACs with Serial Interface
REGISTER
REGISTER
INPUT
INPUT
Dual 8-/10-/12-Bit, High Bandwidth,
Figure 1.
REGISTER
REGISTER
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
GENERAL DESCRIPTION
The AD5429/AD5439/AD5449
dual-channel, current output digital-to-analog converters (DAC),
respectively. These devices operate from a 2.5 V to 5.5 V power
supply, making them suited to battery-powered and other
applications.
As a result of being manufactured on a CMOS submicron process,
these parts offer excellent 4-quadrant multiplication character-
istics, with large signal multiplying bandwidths of 10 MHz.
The applied external reference input voltage (V
the full-scale output current. An integrated feedback resistor
(RFB) provides temperature tracking and full-scale voltage
output when combined with an external current-to-voltage
precision amplifier.
These DACs use a double-buffered, 3-wire serial interface that
is compatible with SPI, QSPI™, MICROWIRE™, and most DSP
interface standards. In addition, a serial data out (SDO) pin allows
daisy-chaining when multiple packages are used. Data readback
allows the user to read the contents of the DAC register via the
SDO pin. On power-up, the internal shift register and latches
are filled with 0s, and the DAC outputs are at zero scale.
The AD5429/AD5439/AD5449 DACs are available in 16-lead
TSSOP packages.
LDAC
DAC
DAC
LDAC
8-/10-/12-BIT
8-/10-/12-BIT
R-2R DAC A
R-2R DAC B
AD5429/AD5439/AD5449
V
V
REF
REF
A
B
©2004–2010 Analog Devices, Inc. All rights reserved.
RFB
RFB
R
R
R
I
I
I
I
R
OUT
OUT
OUT
OUT
FB
FB
1
A
B
are CMOS, 8-, 10-, and 12-bit,
1A
2A
1B
2B
REF
www.analog.com
) determines

Related parts for EVAL-AD5449EBZ

EVAL-AD5449EBZ Summary of contents

Page 1

FEATURES 10 MHz multiplying bandwidth INL of ±0.25 LSB @ 8 bits 16-lead TSSOP package 2 5.5 V supply operation ±10 V reference input 50 MHz serial interface 2.47 MSPS update rate Extended temperature range: −40°C to +125°C ...

Page 2

... Changes to Divider or Programmable Gain Element Section .... 18 Changes to Table 7 Through Table 10 ......................................... 20 Added ADSP-BF5xx-to-AD5429/AD5439/AD5449 Interface Section ........................................................................ 23 Change to PCB Layout and Power Supply Decoupling Section .......................................... 25 Changes to Power Supplies for the Evaluation Board Section .... 25 Changes to Table 13 ....................................................................... 29 Updated Outline Dimensions ....................................................... 30 Changes to Ordering Guide .......................................................... 30 7/04—Revision 0: Initial Version Rev Page ...

Page 3

SPECIFICATIONS Temperature range for Y version: −40°C to +125°C. All specifications T DD REF OUT otherwise noted. DC performance is measured with the OP177, ...

Page 4

AD5429/AD5439/AD5449 1 Parameter Multiplying Feedthrough Error Output Capacitance Digital Feedthrough Output Noise Spectral Density Analog THD Digital THD 100 kHz f OUT 50 kHz f OUT SFDR Performance (Wide Band) Clock = 10 MHz 500 kHz f OUT 100 kHz ...

Page 5

TIMING CHARACTERISTICS All input signals are specified with temperature range for Y version: −40°C to +125°C. All specifications T REF OUT Table 2. 1 Parameter Limit at ...

Page 6

AD5429/AD5439/AD5449 SCLK t 4 SYNC t 5 DB15 SDIN (N) SDO NOTES 1. ALTERNATIVELY, DATA CAN BE CLOCKED INTO THE INPUT SHIFT REGISTER ON THE RISING EDGE OF SCLK AS DETERMINED BY THE CONTROL BITS. IN THIS CASE, DATA WOULD ...

Page 7

ABSOLUTE MAXIMUM RATINGS Transient currents 100 mA do not cause SCR latch-up 25°C, unless otherwise noted. A Table 3. Parameter V to GND GND REF ...

Page 8

AD5429/AD5439/AD5449 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic Description DAC A Current Output. OUT DAC A Analog Ground. This pin should typically be tied to the analog ground ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS 0. 25° 10V REF 0. 0.10 0.05 0 –0.05 –0.10 –0.15 –0. 100 150 CODE Figure 7. INL vs. Code (8-Bit DAC) 0 25°C ...

Page 10

AD5429/AD5439/AD5449 0.6 0.5 0.4 MAX INL 0.3 0.2 0.1 0 MIN INL –0.1 –0.2 –0 REFERENCE VOLTAGE Figure 13. INL vs. Reference Voltage –0. 25° –0.45 –0.50 ...

Page 11

T = 25°C A LOADING 100 1k 10k 100k 1M FREQUENCY (Hz) Figure 19. Supply Current vs. Update Rate 6 T ...

Page 12

AD5429/AD5439/AD5449 25° AMP = AD8038 0 –20 –40 FULL SCALE –60 ZERO SCALE –80 –100 –120 1 100 1k 10k 10 FREQUENCY (Hz) Figure 25. Power Supply Rejection Ratio vs. Frequency –60 ...

Page 13

FREQUENCY (MHz) Figure 31. Wideband SFDR kHz, Clock = 10 MHz OUT 0 –10 –20 –30 –40 –50 –60 –70 ...

Page 14

AD5429/AD5439/AD5449 TERMINOLOGY Relative Accuracy (Endpoint Nonlinearity) A measure of the maximum deviation from a straight line passing through the endpoints of the DAC transfer function measured after adjusting for zero and full scale and is typically expressed in ...

Page 15

THEORY OF OPERATION DIGITAL-TO-ANALOG CONVERTER The AD5429/AD5439/AD5449 are 8-, 10-, and 12-bit, dual- channel, current output DACs consisting of a standard inverting R-2R ladder configuration. Figure 37 shows a simplified diagram for a single channel of the AD5449. The feedback ...

Page 16

AD5429/AD5439/AD5449 Bipolar Operation In some applications, it may be necessary to generate full 4-quadrant multiplying operation or a bipolar output swing. This can easily be accomplished by using another external amplifier and three external resistors, as shown in Figure 39. ...

Page 17

SINGLE-SUPPLY APPLICATIONS Voltage-Switching Mode Figure 40 shows the DACs operating in voltage-switching mode. The reference voltage applied to the connected to AGND; and the output voltage is available at the V A terminal. In ...

Page 18

AD5429/AD5439/AD5449 ADDING GAIN In applications in which the output voltage must be greater than V , gain can be added with an additional external amplifier can be achieved in a single stage. Consider the effect of temper- ...

Page 19

REFERENCE SELECTION When selecting a reference for use with the AD54xx series of current output DACs, pay attention to the reference output voltage temperature coefficient specification. This parameter affects not only the full-scale error, but it can also affect the ...

Page 20

AD5429/AD5439/AD5449 SERIAL INTERFACE The AD5429/AD5439/AD5449 have an easy-to-use, 3-wire interface that is compatible with SPI, QSPI, MICROWIRE, and most DSP interface standards. Data is written to the device in 16-bit words. Each 16-bit word consists of four control bits and ...

Page 21

SYNC Function SYNC is an edge-triggered input that acts as a frame synchron- ization signal and chip enable. Data can be transferred into the device only while SYNC is low. To start the serial data transfer, SYNC should be taken ...

Page 22

AD5429/AD5439/AD5449 MICROPROCESSOR INTERFACING Microprocessor interfacing to the AD54xx family of DACs is through a serial bus that uses standard protocol and is compatible with microcontrollers and DSP processors. The communication channel is a 3-wire interface consisting of a clock signal, ...

Page 23

Interface A serial interface between the DAC and the 80C51/80L51 is shown in Figure 52. TxD of the 80C51/80L51 drives SCLK of the DAC serial interface, and RxD drives the serial data line, SDIN. P1 bit-programmable pin ...

Page 24

... EVALUATION BOARD FOR THE DAC The evaluation board consists of an AD5429/AD5439/AD5449 DAC and a current-to-voltage amplifier, the AD8065. Included on the evaluation board reference, the ADR01. An external reference can also be applied via an SMB input. The evaluation kit consists of a CD-ROM with self-installing PC software to control the DAC. The software allows the user to write a code to the device ...

Page 25

... Evaluation Board Schematic and Artwork Figure 56. Schematic of the Evaluation Board Rev Page AD5429/AD5439/AD5449 ...

Page 26

AD5429/AD5439/AD5449 Figure 57. Component-Side Artwork Figure 58. Silkscreen—Component-Side View (Top) Rev Page ...

Page 27

Figure 59. Solder-Side Artwork Rev Page AD5429/AD5439/AD5449 ...

Page 28

AD5429/AD5439/AD5449 OVERVIEW OF AD54xx DEVICES Table 13. Part No. Resolution No. DACs AD5424 8 1 AD5426 8 1 AD5428 8 2 AD5429 8 2 AD5450 8 1 AD5432 10 1 AD5433 10 1 AD5439 10 2 AD5440 10 2 AD5451 ...

Page 29

... AD5429YRUZ-REEL 8 AD5429YRUZ-REEL7 8 AD5439YRU 10 AD5439YRU-REEL 10 AD5439YRU-REEL7 10 AD5439YRUZ 10 AD5439YRUZ-REEL 10 AD5439YRUZ-REEL7 10 AD5449YRU 12 AD5449YRU-REEL 12 AD5449YRU-REEL7 12 AD5449YRUZ 12 AD5449YRUZ-REEL 12 AD5449YRUZ-REEL7 12 EVAL-AD5429EBZ EVAL-AD5439EB EVAL-AD5449EBZ RoHS Compliant Part. 5.10 5.00 4. 4.50 6.40 4.40 BSC 4. PIN 1 1.20 MAX 0.20 0.09 8° 0.30 0° 0.65 0.19 SEATING BSC PLANE COPLANARITY 0.10 COMPLIANT TO JEDEC STANDARDS MO-153-AB Figure 60 ...

Page 30

AD5429/AD5439/AD5449 NOTES Rev Page ...

Page 31

NOTES AD5429/AD5439/AD5449 Rev Page ...

Page 32

AD5429/AD5439/AD5449 NOTES ©2004–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D04464-0-4/10(C) Rev Page ...

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