AD5545 Analog Devices, AD5545 Datasheet

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AD5545

Manufacturer Part Number
AD5545
Description
Precision DUAL 16-Bit and 14-Bit DACs in Compact TSSOP Packages
Manufacturer
Analog Devices
Datasheet

Specifications of AD5545

Resolution (bits)
16bit
Dac Update Rate
2MSPS
Dac Settling Time
500ns
Max Pos Supply (v)
+5.5V
Single-supply
Yes
Dac Type
Current Out
Dac Input Format
Ser,SPI

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD5545BRUZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Data Sheet
FEATURES
16-bit resolution AD5545
14-bit resolution AD5555
±1 LSB DNL monotonic
±1 LSB INL
2 mA full-scale current ±20%, with V
0.5 µs settling time
2Q multiplying reference-input 6.9 MHz BW
Zero or midscale power-up preset
Zero or midscale dynamic reset
3-wire interface
Compact TSSOP-16 package
APPLICATIONS
Automatic test equipment
Instrumentation
Digitally controlled calibration
Industrial control PLCs
Programmable attenuator
PRODUCT OVERVIEW
The AD5545/AD5555 are 16-bit/14-bit, current-output, digital-
to-analog converters designed to operate from a single 5 V
supply with bipolar output up to ±15 V capability.
An external reference is needed to establish the full-scale
output-current. An internal feedback resistor (R
the resistance and temperature tracking when combined
with an external op amp to complete the I-to-V conversion.
A serial data interface offers high speed, 3-wire microcontroller
compatible inputs using serial data in (SDI), clock (CLK), and
chip select ( CS ). Additional LDAC function allows
simultaneous update operation. The internal reset logic allows
power-on preset and dynamic reset at either zero or midscale,
depending on the state of the MSB pin.
The AD5545/AD5555 are packaged in the compact TSSOP-16
package and can be operated from –40°C to +85°C.
Rev. E
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.
REF
= 10 V
FB
) enhances
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
CLK
V
SDI
CS
DD
Serial-Input, 16-/14-Bit DACs
EN
DGND
DECODE
D0..DX
ADDR
DAC A
B
FUNCTIONAL BLOCK DIAGRAM
16 OR 14
Dual, Current-Output,
©2003–2011 Analog Devices, Inc. All rights reserved.
POWER-
REGISTER
REGISTER
RS
RESET
INPUT
INPUT
ON
MSB
Figure 1.
R
R
AD5545/AD5555
LDAC
REGISTER
REGISTER
DAC B
DAC A
R
R
V
REF
www.analog.com
A
AD5545/
DAC A
DAC B
AD5555
V
REF
B
02918- 0- 001
R
I
A
R
I
A
OUT
OUT
FB
GND
FB
GND
A
B
A
B
A
B

Related parts for AD5545

AD5545 Summary of contents

Page 1

... The internal reset logic allows power-on preset and dynamic reset at either zero or midscale, depending on the state of the MSB pin. The AD5545/AD5555 are packaged in the compact TSSOP-16 package and can be operated from –40°C to +85°C. Rev. E 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 ...

Page 2

... REVISION HISTORY 12/11—Rev Rev. E Added Figure 13; Renumbered Sequentially ................................ 8 5/11—Rev Rev. D Added Evaluation Board for the AD5545 Section, System Demonstration Platform Section, and Operating the Evaluation Board Section .................................................................................. 17 Added Figure 25 and Figure 26; Renumbered Sequentially ..... 17 Added Evaluation Board Schematics Section, Figure 27 .......... 18 Added Figure 28 ...

Page 3

... SUPPLY CHARACTERISTICS Power Supply Range Positive Supply Current Power Dissipation Power Supply Sensitivity = full operating temperature range, unless otherwise noted. REF A Symbol Conditions N AD5545, 1 LSB = 153 µV when V REF AD5555, 1 LSB = 610 µV when V REF INL AD5545B AD5555C ...

Page 4

... V) and timed from a voltage level of 1 D14 D13 D12 D11 D10 Figure 2. AD5545 18-Bit Data Word Timing Diagram D12 D11 D10 D09 D08 Figure 3. AD5555 16-Bit Data Word Timing Diagram Rev Page ...

Page 5

... Exposure to absolute maximum rating conditions for extended periods may affect + 0 device reliability. ESD CAUTION max – T )/θ Rev Page AD5545/AD5555 ...

Page 6

... Serial Data Input. Input data loads directly into the shift register. Reset Pin, Active Low Input. Input registers and DAC registers are set to all 0s or midscale. Register Data = 0x0000 when MSB = 0. Register Data = 0x8000 for AD5545 and 0x2000 for AD5555 when MSB = 1. ...

Page 7

... TYPICAL PERFORMANCE CHARACTERISTICS 1.0 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 8192 16384 24576 32768 40960 49152 57344 65536 CODE (Decimal) Figure 5. AD5545 Integral Nonlinearity Error 1.0 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 8192 16384 24576 32768 40960 49152 57344 65536 CODE (Decimal) Figure 6. AD5545 Differential Nonlinearity Error 1 ...

Page 8

... FREQUENCY (Hz) Figure 12. Power Supply Rejection Ration vs. Frequency 20 0 –20 –40 –60 –80 –100 –120 –140 –160 FREQUENCY (Hz) Figure 13. AD5545/AD5555 Analog THD –2 –4 0x5555 –6 0x8000 –8 –10 –12 –14 10M 100M 02918- 0- 015 ± 10 10V ...

Page 9

... The DAC output (I ducing various output resistances and capacitances. When choosing an external amplifier, the user should take into account the variation in impedance generated by the AD5545/ AD5555 on the amplifiers inverting input node. The feedback resistance in parallel with the DAC ladder resistance dominates output voltage noise ...

Page 10

... At this point, an internally generated load strobe transfers the serial register data contents (Bit D15 to Bit D0) to the decoded DAC input register address determined by Bit A1 and Bit A0. Any extra bits clocked into the AD5545 shift register are ignored; only the last 18 bits clocked in are used ...

Page 11

... Latched Latched Latched Latched Latched data = 0x0000 Latched data = 0x0000 Latched data = 0x2000 Latched data = 0x2000 AD5545/ AD5555 10F 0.1 GND DGND 02918- 0- 008 Figure 20. Power Supply Bypassing and Grounding Connection x pins of the AD5545/AD5555 refer to the GND ...

Page 12

... The transfer equation of this circuit shows that both negative and positive output voltages are created because the input data (D) is incremented from code zero (V OUT +2.5 V For the AD5545, the external resistance tolerance becomes the dominant error that users should be aware of. OUT ADR03 ...

Page 13

... ( OUT REF REF GND AD5545/AD5555 (6) Figure 24. Programmable Current Source with Bidirectional Current Control and High Voltage Compliance Capabilities Rev Page AD5545/AD5555 is infinite, which is O can be either O R1' R2' 150kΩ 15kΩ AD8628 C1 10pF R3' 50Ω ...

Page 14

... AD5545/AD5555 DAC WITH PROGRAMMABLE INPUT REFERENCE RANGE Because high voltage references can be costly, users may consider using one of the DACs, a digital potentiometer, and a low voltage reference to form a single-channel DAC with a programmable input reference range. This approach optimizes the programmable range as well as facilitates future system upgrades with just software changes ...

Page 15

... Rev Page AD5545/AD5555 and AGND), they settle quickly. IN Package(s) SOIC-8 TSOT-5, SC70-5 SOIC-8 TSOT-5, SC70-5 SOIC-8 TSOT-5, SC70-5 SOIC-8 TSOT-5, SC70-5 SOIC-8, MSOP-8 SOIC-8, MSOP-8 SOIC-8, MSOP-8 SOIC-8, MSOP-8 SOIC-8, MSOP-8 SOIC-8, MSOP-8 TSOT-5 TSOT-5 ...

Page 16

... AD5545/AD5555 Table 11. Suitable Analog Devices Precision Op Amps V OS Part No. Supply Voltage (V) (µV) OP97 ±2 to ±20 25 OP1177 ±2.5 to ±15 60 AD8675 ±5 to ±18 75 AD8671 ±5 to ±15 75 ADA4004-1 ±5 to ±15 125 AD8603 1 AD8607 1 AD8605 2 AD8615 2 AD8616 2 Table 12. Suitable Analog Devices High Speed Op Amps Part No ...

Page 17

... Data Sheet EVALUATION BOARD FOR THE AD5545 The EVAL-AD5545SDZ is used in conjunction with an SDP1Z system demonstration platform board available from Analog Devices, which is purchased separately from the evaluation board. The USB-to-SPI communication to the AD5545 is completed using this Blackfin®-based demonstration board. ...

Page 18

... AD5545/AD5555 EVALUATION BOARD SCHEMATICS Figure 28. EVAL-AD5545SDZ Schematic Part A Rev Page Data Sheet 02918-0-028 ...

Page 19

... Data Sheet Figure 29. EVAL-AD5545SDZ Schematic Part B Rev Page AD5545/AD5555 02918-0-029 ...

Page 20

... AD5545/AD5555 Figure 30. EVAL-AD5545SDZ Schematic Part B Rev Page Data Sheet 02918-0-030 ...

Page 21

... Data Sheet EVALUATION BOARD LAYOUT Figure 31. Silkscreen Figure 32. Component Side Rev Page AD5545/AD5555 ...

Page 22

... AD5545/AD5555 Figure 33. Solder Side Rev Page Data Sheet ...

Page 23

... AD5545CRUZ-REEL7 ±1 ±1 AD5555CRU ±1 ±1 AD5555CRU-REEL7 ±1 ±1 AD5555CRUZ ±1 ±1 AD5555CRUZ-REEL7 ±1 ±1 EVAL-AD5545SDZ 1 The AD5545/AD5555 contain 3131 transistors. The die size measures 71 mil. × 96 mil., 6816 sq. mil 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° ...

Page 24

... AD5545/AD5555 NOTES ©2003–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D02918-0-12/11(E) Rev Page Data Sheet ...

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