AD5426YRM-REEL7 AD [Analog Devices], AD5426YRM-REEL7 Datasheet

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AD5426YRM-REEL7

Manufacturer Part Number
AD5426YRM-REEL7
Description
8-/10-/12-Bit High Bandwidth Multiplying DACs with Serial Interface
Manufacturer
AD [Analog Devices]
Datasheet
1.AD5426YRM-REEL7.pdf (24 pages)
GENERAL DESCRIPTION
The AD5426/AD5432/AD5443 are CMOS 8-, 10-, and 12-bit
current output digital-to-analog converters, respectively.
These devices operate from a 3.0 V to 5.5 V power supply,
making them suited to battery-powered applications and many
other applications.
These DACs utilize double buffered 3-wire serial interface that
is compatible with SPI
DSP interface standards. In addition, a serial data out pin (SDO)
allows for 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.
As a result of manufacture on a CMOS submicron process, they
offer excellent 4-quadrant multiplication characteristics, with
large signal multiplying bandwidths of 10 MHz.
*U.S. Patent No. 5,689,257
REV. 0
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. 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.
FEATURES
3.0 V to 5.5 V Supply Operation
50 MHz Serial Interface
10 MHz Multiplying Bandwidth
Low Glitch Energy < 2 nV-s
Extended Temperature Range –40 C to +125 C
10-Lead MSOP Package
Pin Compatible 8-, 10-, and 12-Bit Current
Guaranteed Monotonic
4-Quadrant Multiplication
Power-On Reset with Brownout Detection
Daisy-chain Mode
Readback Function
0.4 A Typical Power Consumption
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
10 V Reference Input
Output DACs
®
, QSPI ™ , MICROWIRE ™, and most
Multiplying DACs with Serial Interface
The applied external reference input voltage (V
the full-scale output current. An integrated feedback resistor (R
provides temperature tracking and full-scale voltage output when
combined with an external current to voltage precision amplifier.
The AD5426/AD5432/AD5443 DACs are available in small
10-lead MSOP packages.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
8-/10-/12-Bit High Bandwidth
SYNC
SCLK
SDIN
AD5426/AD5432/AD5443
POWER-ON
FUNCTIONAL BLOCK DIAGRAM
AD5426/
AD5432/
AD5443
RESET
V
DD
© 2004 Analog Devices, Inc. All rights reserved.
INPUT SHIFT REGISTER
CONTROL LOGIC AND
DAC REGISTER
INPUT LATCH
8-/10-/12-BIT
V
R-2R DAC
REF
GND
R
REF
www.analog.com
) determines
SDO
R
I
I
OUT
OUT
FB
1
2
*
FB
)

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AD5426YRM-REEL7 Summary of contents

Page 1

FEATURES 3 5.5 V Supply Operation 50 MHz Serial Interface 10 MHz Multiplying Bandwidth 10 V Reference Input Low Glitch Energy < 2 nV-s Extended Temperature Range – +125 C 10-Lead MSOP Package Pin Compatible 8-, ...

Page 2

AD5426/AD5432/AD5443–SPECIFICATIONS ( 5 All specifications T DD REF OUT performance with AD8038, unless otherwise noted.) Parameter STATIC PERFORMANCE AD5426 Resolution Relative Accuracy Differential Nonlinearity AD5432 Resolution ...

Page 3

Parameter SFDR Performance (Wide Band) Clock = 10 MHz 50 kHz f OUT 20 kHz f OUT SFDR Performance (Narrow Band) Clock = 1 MHz 50 kHz f OUT 20 kHz f OUT Intermodulation Distortion Clock = 1 MHz f ...

Page 4

AD5426/AD5432/AD5443 TIMING CHARACTERISTICS Parameter 3 5 SCLK ...

Page 5

... Only one absolute maximum rating may be applied at any one time. 2 Transient currents 100 mA will not cause SCR latchup. Overvoltages at SCLK, SYNC, and DIN, will be clamped by internal diodes. 3 Resolution Model (Bit) AD5426YRM 8 AD5426YRM-REEL 8 AD5426YRM-REEL7 8 AD5432YRM 10 AD5432YRM-REEL 10 AD5432YRM-REEL7 10 AD5443YRM 12 AD5443YRM-REEL 12 AD5443YRM-REEL7 ...

Page 6

AD5426/AD5432/AD5443 Pin No. Mnemonic Function DAC Current Output. OUT DAC Analog Ground. This pin should normally be tied to the analog ground of the system. OUT 3 GND Ground Pin. 4 SCLK Serial Clock ...

Page 7

Typical Performance Characteristics–AD5426/AD5432/AD5443 0. 10V 0.15 REF 0.10 0.05 0 –0.05 –0.10 –0.15 –0. 100 150 200 250 CODE TPC 1. INL vs. Code (8-Bit DAC) 0.20 ...

Page 8

AD5426/AD5432/AD5443 2 REF MAX INL AD5443 0.5 MAX DNL 0 –0.5 MIN INL –1.0 MIN DNL –1.5 –2.0 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 ...

Page 9

AD5443 3.0 LOADING 010101010101 2.5 2 100 1k 10k 100k 1M 10M 100M FREQUENCY (Hz) TPC 19. Supply Current vs. ...

Page 10

AD5426/AD5432/AD5443 1 1.6 1 1.2 1 0.8 0.6 0.4 0.2 0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VOLTAGE (V) TPC 28. Threshold Voltages vs. Supply Voltage ...

Page 11

TERMINOLOGY Relative Accuracy Relative accuracy or endpoint nonlinearity is a measure of the maximum deviation from a straight line passing through the endpoints of the DAC transfer function measured after adjusting for 0 and full scale and is ...

Page 12

AD5426/AD5432/AD5443 DAC SECTION The AD5426, AD5432, and AD5443 are 8-, 10-, and 12-bit cur- rent output DACs consisting of a standard inverting R-2R ladder configuration. A simplified diagram for the 8-bit AD54246 is shown in Figure 4. The feedback resistor ...

Page 13

SYNC Function SYNC is an edge-triggered input that acts as a frame synchroni- zation 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 14

AD5426/AD5432/AD5443 R1 V REF V REF 10V NOTES 1. R1 AND R2 ARE USED ONLY IF GAIN ADJUSTMENT IS REQUIRED. ADJUST R1 FOR V 2. MATCHING AND TRACKING IS ESSENTIAL FOR RESISTOR PAIRS R3 AND R4 PHASE COMPENSATION ...

Page 15

Voltage Switching Mode of Operation Figure 9 shows these DACs operating in the voltage-switching mode. The reference voltage applied to the connected to AGND, and the output voltage is available OUT at ...

Page 16

AD5426/AD5432/AD5443 DAC leakage current is also a potential error source in divider circuits. The leakage current must be counterbalanced by an opposite current supplied from the op amp through the DAC. Since only a fraction D of the current into ...

Page 17

Most single-supply circuits include ground as part of the analog signal range, which in turns requires an amplifier that can handle rail-to-rail signals, there is a large range of single-supply amplifiers available from Analog Devices. MICROPROCESSOR INTERFACING Microprocessor interfacing to ...

Page 18

AD5426/AD5432/AD5443 MC68HC11 Interface to AD5426/AD5432/AD5443 Interface Figure 16 shows an example of a serial interface between the DAC and the MC68HC11 microcontroller. The serial peripheral interface (SPI) on the MC68HC11 is configured for master mode (MSTR = 1), clock polarity ...

Page 19

EVALUATION BOARD FOR THE AD5426/AD5432/AD5443 SERIES OF DACS The board consists of a 12-bit AD5443 and a current to voltage amplifier AD8065. Included on the evaluation board reference ADR01. An external reference may also be applied ...

Page 20

AD5426/AD5432/AD5443 P1 EVAL–AD5426/ AD5432/AD5443EB Figure 20. Silkscreen—Component Side View (Top Layer) Figure 21. Silkscreen—Component Side View (Bottom Layer) SCLK J3 C11 U3 SCLK J1 VOUT SDIN U1 J4 SDIN R1 C6 SYNC VREF LK1 SYNC U2 C3 ...

Page 21

Part No. Resolution No. DACs AD5403 AD5410 AD5413 AD5424 8 1 AD5425 8 1 AD5426 8 1 AD5428 8 2 AD5429 8 2 AD5450 8 1 AD5404 AD5411 AD5414* 10 ...

Page 22

AD5426/AD5432/AD5443 OUTLINE DIMENSIONS 10-Lead Mini Small Outline Package [MSOP] (RM-10) Dimensions shown in millimeters 3.00 BSC 10 6 4.90 BSC 3.00 BSC 1 5 PIN 1 0.50 BSC 0.95 0.85 1.10 MAX 0.75 0.15 0.27 SEATING 0.23 0.00 PLANE 0.17 ...

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