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AD5557CRU Datasheet(PDF) 1 Page - Analog Devices |
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AD5557CRU Datasheet(HTML) 1 Page - Analog Devices |
1 / 20 page Dual Current Output, Parallel Input, 16-/14-Bit Multiplying DACs with 4-Quadrant Resistors AD5547/AD5557 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved. FEATURES Dual channel 16-bit resolution: AD5547 14-bit resolution: AD5557 2- or 4-quadrant, 4 MHz BW multiplying DAC ±1 LSB DNL ±1 LSB INL for AD5557, ±2 LSB INL for AD5547 Operating supply voltage: 2.7 V to 5.5 V Low noise: 12 nV/√Hz Low power: IDD = 10 µA max 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 Extended automotive operating temperature range: –40°C to +125°C Selectable zero-scale/midscale power-on presets Compact TSSOP-38 package APPLICATIONS Automatic test equipment Instrumentation Digitally controlled calibration Digital waveform generation GENERAL DESCRIPTION The AD5547/AD5557 are dual precision, 16-/14-bit, multiplying, low power, current-output, parallel input, digital- to-analog converters. They are designed to operate from single +5 V supply with ±10 V multiplying references for 4-quadrant outputs with up to 4 MHz bandwidth. FUNCTIONAL BLOCK DIAGRAM DAC A D0..D15 OR D0..D13 DAC A DAC B ADDR DECODE INPUT REGISTER RS DAC A REGISTER RS DAC B REGISTER RS POWER ON RESET VDD RCOMB RCOMA R1A ROFSA VREFA R1B ROFSB RFBA AGNDA AGNDB VREFB IOUTA RFBB IOUTB D0–D15 (AD5547) D0–D13 (AD5557) A0, A1 MSB LDAC DGND WR RS INPUT REGISTER RS DAC B AD5547/AD5557 Figure 1. The built-in 4-quadrant resistors facilitate resistance matching and temperature tracking, which minimize the numbers of components needed for multiquadrant applications. In addition, the feedback resistor (RFB) simplifies the I-V conversion with an external buffer. The AD5547/AD5557 are available in a compact TSSOP-38 package and operate at the extended automotive temperature range of –40°C to +125°C. VREF –VREF –VREF TO +VREF U1 C1 R1A 16/14 DATA RCOMA R1 R2 ROFSA RFBA C2 RFB ROFS 16-/14-BIT DAC A MSB A0, A1 2 POWER-ON RESET AD5547/AD5557 IOUTA AGNDA (ONE CHANNEL SHOWN ONLY) U2 VOUTA VREFA MSB A0, A1 LDAC WR RS WR RS LDAC Figure 2. 16/14-Bit 4-Quadrant Multiplying DAC with Minimum of External Components (Only One Channel Shown) |
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