AD5415YRU-REEL AD [Analog Devices], AD5415YRU-REEL Datasheet

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AD5415YRU-REEL

Manufacturer Part Number
AD5415YRU-REEL
Description
Dual 12-Bit, High Bandwidth, Multiplying DAC with 4-Quadrant Resistors and Serial Interface
Manufacturer
AD [Analog Devices]
Datasheet
FEATURES
On-chip 4-quadrant resistors allow flexible output ranges
10 MHz multiplying bandwidth
50 MHz serial interface
2.5 V to 5.5 V supply operation
±10 V reference input
Extended temperature range: −40°C to +125°C
24-lead TSSOP package
Guaranteed monotonic
Power-on reset
Daisy-chain mode
Readback function
0.5 µA typical current 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
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.
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.
SYNC
LDAC
SCLK
SDIN
GND
SDO
CLR
V
DD
REGISTER
POWER-ON
SHIFT
RESET
AD5415
FUNCTIONAL BLOCK DIAGRAM
with 4-Quadrant Resistors and Serial Interface
Dual 12-Bit, High Bandwidth, Multiplying DAC
REGISTER
REGISTER
INPUT
INPUT
R3A
R3B
R3
2R
R3
2R
Figure 1.
R2_3A
R2_3B
R2
2R
R2
2R
REGISTER
REGISTER
GENERAL DESCRIPTION
The AD5415
digital-to-analog converter. This device operates from a 2.5 V to
5.5 V power supply, making it suited to battery-powered appli-
cations as well as many other applications.
The applied external reference input voltage (V
the full-scale output current. An integrated feedback resistor
(R
output when combined with an external current-to-voltage
precision amplifier. In addition, this device contains all the
4-quadrant resistors necessary for bipolar operation and other
configuration modes.
This DAC utilizes 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 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 zeros, and the DAC outputs
are at zero scale. As a result of manufacture on a CMOS submi-
cron process, this part offers excellent 4-quadrant multiplication
characteristics, with large-signal multiplying bandwidths of
10 MHz.
1
R2A
DAC
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
DAC
R2B
US Patent Number 5,689,257.
FB
) provides temperature tracking and full-scale voltage
V
V
REF
REF
R-2R DAC A
R-2R DAC B
A R1A
B R1B
1
12-BIT
12-BIT
is a CMOS 12-bit, dual-channel, current output
R1
2R
R1
2R
© 2004 Analog Devices, Inc. All rights reserved.
R
R
2R
2R
FB
FB
R
I
I
I
I
R
OUT
OUT
OUT
OUT
FB
FB
A
B
1A
2A
1B
2B
www.analog.com
REF
AD5415
) determines

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AD5415YRU-REEL Summary of contents

Page 1

FEATURES On-chip 4-quadrant resistors allow flexible output ranges 10 MHz multiplying bandwidth 50 MHz serial interface 2 5.5 V supply operation ±10 V reference input Extended temperature range: −40°C to +125°C 24-lead TSSOP package Guaranteed monotonic Power-on reset ...

Page 2

AD5415 TABLE OF CONTENTS Specifications..................................................................................... 3 Timing Characteristics ................................................................ 5 Absolute Maximum Ratings............................................................ 7 ESD Caution.................................................................................. 7 Pin Configuration and Function Descriptions............................. 8 Terminology ...................................................................................... 9 Typical Performance Characteristics ........................................... 10 General Description ....................................................................... 15 DAC Section................................................................................ 15 Unipolar Mode............................................................................ ...

Page 3

SPECIFICATIONS Temperature range for Y Version: −40°C to +125° REF OUT DC performance measured with OP1177, ac performance with AD8038, unless otherwise noted. Table 1. ...

Page 4

AD5415 Parameter SFDR Performance (Wideband) Clock = 10 MHz 500 kHz f OUT 100 kHz f OUT 50 kHz f OUT Clock = 25 MHz 500 kHz f OUT 100 kHz f OUT 50 kHz f OUT SFDR Performance (Narrow-Band) ...

Page 5

TIMING CHARACTERISTICS Temperature range for Y Version: −40°C to +125°C. See Figure 2 and Figure 3. Guaranteed by design and characterization, not subject to production test. All input signals are specified with (10% to ...

Page 6

AD5415 SCLK t 4 SYNC t 5 DB15 SDIN (N) SDO ALTERNATIVELY, DATA CAN BE CLOCKED INTO INPUT SHIFT REGISTER ON RISING EDGE OF SCLK AS DETERMINED BY CONTROL BITS. IN THIS CASE, DATA WOULD BE CLOCKED OUT OF SDO ...

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

AD5415 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic Function DAC A Current Output. OUT DAC A Analog Ground. This pin should normally be tied to the analog ground ...

Page 9

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 zero scale and full scale, and ...

Page 10

AD5415 TYPICAL PERFORMANCE CHARACTERISTICS 1 25° 10V REF 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 500 1000 1500 2000 2500 CODE Figure 6. INL vs. Code (12-Bit ...

Page 11

OUT 1.0 0 OUT 0.6 0.4 0.2 0 –40 – TEMPERATURE (°C) Figure 12 Leakage Current vs. Temperature out 0.50 0. ...

Page 12

AD5415 0.045 7FF TO 800H 0.040 0.035 0.030 0.025 0.020 0.015 800 TO 7FFH 0.010 0.005 0 –0.005 –0.010 ...

Page 13

FREQUENCY (MHz) Figure 24. Wideband SFDR 100 kHz, Clock = 25 MHz OUT 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 ...

Page 14

AD5415 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 0 50 100 150 200 250 FREQUENCY (kHz) Figure 30. Wideband IMD kHz, 100 kHz, Clock = 25 MHz OUT 300 = 25 ° C ...

Page 15

GENERAL DESCRIPTION DAC SECTION The AD5415 is a 12-bit, dual-channel, current output DAC consisting of standard inverting ladder configuration. A simplified diagram of one DAC channel for the AD5415 is shown in Figure 32. The feedback resistor ...

Page 16

AD5415 BIPOLAR OPERATION In some applications, it might be necessary to generate full 4-quadrant multiplying operation or a bipolar output swing. This can be easily accomplished by using another external amplifier and the on chip 4-quadrant resistors, as shown in ...

Page 17

SINGLE-SUPPLY APPLICATIONS VOLTAGE SWITCHING MODE OF OPERATION Figure 35 shows these DACs operating in the voltage switching mode. The reference voltage applied to the connected to AGND, and the output voltage is ...

Page 18

AD5415 OUT V REF I 2 OUT GND NOTE: 1 ADDITIONAL PINS OMITTED FOR CLARITY. Figure 38. Current-Steering DAC Used as a Divider or Programmable Gain Element ...

Page 19

Table 7. ADI Precision References for Use with AD54xx DACs Reference Output Voltage (V) ADR01 10 ADR02 5 ADR03 2.5 ADR425 5 Table 8. Precision ADI Op Amps for Use with AD54xx DACs Part No. Max Supply Voltage (V) OP97 ...

Page 20

AD5415 SERIAL INTERFACE The AD5415 has an easy-to-use 3-wire interface, which is compatible with SPI, QSPI, MICROWIRE, and DSP interface standards. Data is written to the device in 16-bit words. Each 16-bit word consists of four control bits and 12 ...

Page 21

Table 11. DAC Control Bits ...

Page 22

AD5415 MICROPROCESSOR INTERFACING Microprocessor interfacing to the AD5415 DAC is through a serial bus that uses standard protocol compatible with micro- controllers and DSP processors. The communications channel is a 3-wire interface consisting of a clock signal, a data signal, ...

Page 23

Data is transmitted MSB first. To load data to the DAC, PC7 is left low after the first eight bits are transferred, and a second serial write operation is performed to the DAC. PC7 is taken high ...

Page 24

AD5415 PCB LAYOUT AND POWER SUPPLY DECOUPLING In any circuit where accuracy is important, careful considera- tion of the power supply and ground return layout helps to ensure the rated performance. The printed circuit board on which the AD5415 is ...

Page 25

Figure 47. Schematic of the AD5415 Evaluation Board Rev Page AD5415 ...

Page 26

AD5415 Figure 48. Component-Side Artwork Figure 49. Silkscreen—Component-Side View (Top) Rev Page ...

Page 27

Table 13. Overview of AD54xx Devices 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 10 ...

Page 28

... AD5415 OUTLINE DIMENSIONS 0.15 0.05 ORDERING GUIDE Model Resolution AD5415YRU 12 AD5415YRU-REEL 12 AD5415YRU-REEL7 12 EVAL-AD5415EB © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 7.90 7.80 7. 4.50 4.40 4.30 6.40 BSC 1 12 PIN 1 0.65 1.20 BSC MAX 0.30 0.20 SEATING 0.19 PLANE 0.09 0.10 COPLANARITY COMPLIANT TO JEDEC STANDARDS MO-153AD Figure 51 ...

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