AD5556 Analog Devices, AD5556 Datasheet
AD5556
Specifications of AD5556
Available stocks
Related parts for AD5556
AD5556 Summary of contents
Page 1
... Multiplying DACs with Four-Quadrant Resistors DB0 TO DB15 = 10 V GENERAL DESCRIPTION The AD5546/AD5556 are precision 16-/14-bit, multiplying, low power, current output, parallel input digital-to-analog converters (DACs). They operate from a single 2 5.5 V supply with ±10 V multiplying references for four-quadrant outputs. Built- in four-quadrant resistors facilitate the resistance matching and temperature tracking that minimize the number of components needed for multiquadrant applications ...
Page 2
... AD5546/AD5556 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Characteristics ............................................................. 3 Timing Diagram ........................................................................... 4 Absolute Maximum Ratings ............................................................ 5 ESD Caution .................................................................................. 5 Pin Configurations and Function Descriptions ........................... 6 Typical Performance Characteristics ............................................. 8 Circuit Operation ........................................................................... 10 Digital-to-Analog (DAC) Converter Section ......................... 10 REVISION HISTORY 11/11—Rev Rev. D Changes to General Description Section ...
Page 3
... LDAC = – full operating temperature range, unless otherwise noted. REF A Conditions AD5546, 1 LSB = 153 µV at REF REF AD5556, 1 LSB = 610 µV at REF REF Grade: AD5556C Grade: AD5546B Grade: AD5546C Monotonic Data = zero scale 25°C ...
Page 4
... Typical values represent average readings measured at 25°C. OUT = 2.5 ns (10 and timed from a voltage level of 1 LWD t LDAC Figure 3. AD5546/AD5556 Timing Diagram Rev Page Data Sheet Min Typ Max Unit ...
Page 5
... maximum rating conditions for extended periods may affect –0 0 device reliability. ±50 mA 128°C ESD CAUTION 150°C –40°C to +125°C –65°C to +150°C 215°C 220°C (T – T )/θ J MAX A JA Rev Page AD5546/AD5556 ...
Page 6
... D13 to D8 Digital Input Data Bits[D13:D8]. The signal level must be ≤ Positive Power Supply Input. Specified range of operation Table 4. AD5556 Pin Function Descriptions Pin No. Mnemonic Description Digital Input Data Bits[D5:D0]. The signal level must be ≤ ...
Page 7
... Reset in Active Low. Resets to zero scale if MSB = 0 and resets to midscale if MSB = 1. The signal level must be RS ≤ 0 GND Analog and Digital Grounds D13 to D6 Digital Input Data Bits[D13:D6]. The signal level must be ≤ Positive Power Supply Input. Specified range of operation Rev Page AD5546/AD5556 ...
Page 8
... CODE (Decimal) Figure 8. AD5556 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 0248 4096 6144 CODE (Decimal) Figure 9. AD5556 Differential Nonlinearity Error 1 2.5V REF T = 25°C A 1.0 0.5 0 –0.5 –1.0 –1 SUPPLY VOLTAGE V Figure 10. Linearity Error vs ...
Page 9
... Figure 16. AD5546 Unipolar Reference Multiplying Bandwidth LDAC V OUT 2.70V –6.20V Rev Page AD5546/AD5556 –200 –100 0 100 200 TIME (ns) Figure 15. AD5546 Midscale Transition 10k 100k 1M 10M FREQUENCY (Hz) 300 400 100M ...
Page 10
... V reference. In addition to the precision conversion R commonly found in current output DACs, there are three addi- tional precision resistors for four-quadrant bipolar applications. The AD5546/AD5556 consist of two groups of precision R-2R ladders, which make up the 12/10 LSBs, respectively. Further- more, the four MSBs are decoded into 15 segments of resistor value 2R ...
Page 11
... The AD5546/AD5556 have 16-/14-bit parallel inputs. The devices are double buffered with 16-/14-bit registers. The double-buffered feature allows the update of several AD5546/AD5556 simultaneously. For the AD5546, the input register is loaded directly from a 16-bit controller bus when the WR pin is brought low. The DAC register is updated with data from the input register when LDAC is brought high ...
Page 12
... DATA WR LDAC RS MSB Two-Quadrant Multiplying Mode –V The AD5546/AD5556 are designed to operate with either OUT REF positive or negative reference voltages result, positive output can be achieved with an additional op amp, (see Figure 20), and the output becomes AD5546 V (1) ...
Page 13
... RS MSB BIPOLAR MODE Four-Quadrant Multiplying Mode, V The AD5546/AD5556 contain on-chip all the four-quadrant resistors necessary for the precision bipolar multiplying operation. Such a feature minimizes the number of exponent components to only a voltage reference, dual op amp, and compensation capacitor (see Figure 21). For example, with a ...
Page 14
... REF 0000 0000 0000 0000 –V REF AC REFERENCE SIGNAL ATTENUATOR Besides handling digital waveforms decoded from parallel input data, the AD5546/AD5556 handle equally well low frequency +10V –10V + 1F 0.1F 16/14 DATA WR LDAC ...
Page 15
... Rev Page AD5546/AD5556 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
... AD5546/AD5556 Table 12. 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 13. Suitable Analog Devices High Speed Op Amps Part No ...
Page 17
... TSSOP ±1 −40 to +125 28-Lead TSSOP ±1 −40 to +125 28-Lead TSSOP ±1 −40 to +125 28-Lead TSSOP ±1 −40 to +125 28-Lead TSSOP ±1 −40 to +125 28-Lead TSSOP Evaluation Board Rev Page AD5546/AD5556 6.40 BSC 8 ° 0.75 0 ° 0.60 0.45 Package Option Ordering Quantity RU-28 50 RU-28 1,000 RU-28 50 RU-28 1,000 RU-28 ...
Page 18
... AD5546/AD5556 NOTES Rev Page Data Sheet ...
Page 19
... Data Sheet NOTES Rev Page AD5546/AD5556 ...
Page 20
... AD5546/AD5556 NOTES ©2004-2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D03810-0-11/11(D) Rev Page Data Sheet ...