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AD5546BRUZ
Current Output, Parallel Input, 16-/14-Bit Multiplying DACs with Four-Quadrant Resistors AD5546/AD5556 Data Sheet FEATURES FUNCTIONAL BLOCK DIAGRAM R1 16-bit resolution 14-bit resolution 2- or 4-quadrant multiplying DAC ±1 LSB DNL ±1 LSB INL Operating supply voltage: 2.7 V to 5.5 V Low noise: 12 nV/√Hz Low power: IDD = 10 μA 0.5 μs settling time Built-in RFB facilitates current-to-voltage conversion Built-in 4-quadrant resistors allow 0 V to –10 V, 0 V to +10 V, or ±10 V outputs 2 mA full-scale current ±20%, with VREF = 10 V Automotive operating temperature: –40°C to +125°C Compact TSSOP-28 package RCOM R1 REF ROFS R2 AD5546/ AD5556 VDD WR RFB DAC RFB IOUT 16/14 CONTROL LOGIC LDAC ROFS DAC REGISTER DB0 TO DB15 GND MSB 03810-001 POR RS Figure 1. AD5546/AD5556 Simplified Block Diagram 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 2.7 V to 5.5 V supply with ±10 V multiplying references for four-quadrant outputs. Builtin four-quadrant resistors facilitate the resistance matching and temperature tracking that minimize the number of components needed for multiquadrant applications. The feedback resistor (RFB) simplifies the I-V conversion with an external buffer. The AD5546/AD5556 are packaged in compact TSSOP-28 packages with operating temperatures from –40°C to +125°C. APPLICATIONS Automatic test equipment Instrumentation Digitally controlled calibration Digital waveform generation The EVAL-AD5546SDZ is available for evaluating DAC performance. For more information, see the UG-309 evaluation board user guide. + U2A OP2177 – +10V C7 –10V R1A VREFA RCOMA ROFSA RFBA +15V C6 R1 ROFS VDD C1 1µF C2 0.1µF U1 AD5546/AD5556 IOUT 16-/14-BIT DATA – C5 0.1µF V+ U2B OP2177 GND 16-/14-BIT DATA C4 1µF RFB + VOUT V– C8 1µF WR LDAC RS MSB WR LDAC RS MSB C9 0.1µF –15V 03810-024 +5V R2 Figure 2. 16-/14-Bit, Four-Quadrant Multiplying DAC with a Minimum of External Components Rev. D 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2004-2011 Analog Devices, Inc. All rights reserved.
AD
Analog Devices
U.S.A
半導体デバイスを製造するアメリカの多国籍企業。特にADC、DAC、MEMS、DSPなどに強い。現在は 65nm から 3μm のプロセスルールの回路を設計している。
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