16-/32-Channel, Serially Controlled 4 a 1.8 V to 5.5 V, 2.5 V, Analog Multiplexers ADG725/ADG731 FEATURES FUNCTIONAL BLOCK DIAGRAM 3-Wire SPI Compatible Serial Interface 1.8 V to 5.5 V Single Supply ADG731 ADG725 2.5 V Dual-Supply Operation S1 S1A 4 On Resistance DA 0.5 On Resistance Flatness S16A 7 mm x 7 mm 48-Lead Chip Scale Package (LFCSP) D or 48-Lead TQFP Package Rail-to-Rail Operation S1B Power-On Reset DB 42 ns Switching Times S32 S16B Single 32-to-1 Channel Multiplexer INPUT SHIFT INPUT SHIFT Dual/Differential 16-to-1 Channel Multiplexer REGISTER REGISTER TTL/CMOS Compatible Inputs For Functionally Equivalent Devices with Parallel SCLK DIN SYNC SCLK DIN SYNC Interface, See ADG726/ADG732 APPLICATIONS Optical Applications Data Acquisition Systems Communication Systems Relay Replacement Audio and Video Switching Battery-Powered Systems Medical Instrumentation Automatic Test Equipment GENERAL DESCRIPTION These parts can operate equally well as either multiplexers or The ADG731/ADG725 are monolithic, CMOS, 32-channel/ demultiplexers and have an input signal range that extends to the dual 16-channel analog multiplexers with a serially controlled supplies. In the OFF condition, signal levels up to the supplies 3-wire interface. The ADG731 switches one of 32 inputs are blocked. All channels exhibit break-before-make switching (S1S32) to a common output, D. The ADG725 can be config- action, preventing momentary shorting when switching channels. ured as a dual mux switching one of 16 inputs to one output, or a The ADG731 and ADG725 are serially controlled 32-channel, differential mux switching one of 16 inputs to a differential output. and dual/differential 16-channel multiplexers, respectively. They These mulitplexers utilize a 3-wire serial interface that is com- are available in either a 48-lead LFCSP or TQFP package. patible with SPI , QSPI , MICROWIRE , and some DSP interface standards. On power-up, the Internal Shift Register PRODUCT HIGHLIGHTS contains all zeros and all switches are in the OFF state. 1. 3-Wire Serial Interface. These multiplexers are designed on an enhanced submicron 2. 1.8 V to 5.5 V Single-Supply or 2.5 V Dual-Supply process that provides low power dissipation yet gives high switch- Operation. These parts are specified and guaranteed ing speed with very low on resistance and leakage currents. with 5 V 10%, 3 V 10% single-supply, They operate from a single supply of 1.8 V to 5.5 V or a and 2.5 V 10% dual-supply rails. 2.5 V dual supply, making them ideally suited to a variety of 3. On Resistance of 4 W. applications. On resistance is in the region of a few ohms, is 4. Guaranteed Break-Before-Make Switching Action. closely matched between switches, and is very flat over the full signal range. 5. 7 mm 7 mm 48-Lead Chip Scale Package (LFCSP) or 48-Lead TQFP Package. Rev. B Document Feedback 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. infringements of patents or other rights of third parties that may result from its use. Tel: 781.329.4700 2015 Analog Devices, Inc. All rights reserved. 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 Technical Support www.analog.com registered trademarks are the property of their respective owners. 1 (V = 5 V 10%, V = 0 V, GND = 0 V, unless otherwise noted.) ADG725/ADG731SPECIFICATIONS DD SS B Version Parameter +25 C 40 C to +85 C Unit Test Conditions/Comments ANALOG SWITCH Analog Signal Range 0 to V V DD On Resistance (R)4 typ V = 0 V to V , I = 10 mA ON S DD DS 5.56 max Test Circuit 1 On Resistance Match between 0.3 typ V = 0 V to V , I = 10 mA S DD DS Channels (R)0.8 max ON On Resistance Flatness (R )0.5 typ V = 0 V to V , I = 10 mA FLAT(ON) S DD DS 1 max LEAKAGE CURRENTS V = 5.5 V DD Source OFF Leakage I (OFF) 0.01 nA typ V = 4.5 V/1 V, V = 1 V/4.5 V S D S 0.25 1 nA max Test Circuit 2 Drain OFF Leakage I (OFF) 0.05 nA typ V = 4.5 V/1 V, V = 1 V/4.5 V D D S ADG725 0.5 2.5 nA max Test Circuit 3 ADG731 1 5 nA max Channel ON Leakage I , I (ON) 0.05 nA typ V = V = 1 V or 4.5 V D S D S ADG725 0.5 2.5 nA max Test Circuit 4 ADG731 1 5 nA max DIGITAL INPUTS Input High Voltage, V 2.4V min INH Input Low Voltage, V 0.8 V max INL Input Current I or I 0.005 A typ V = V or V INL INH IN INL INH 0.5 A max C , Digital Input Capacitance 5 pF typ IN 2 DYNAMIC CHARACTERISTICS t 42 ns typ R = 300 , C = 35 pF Test Circuit 5 TRANSITION L L 53 62 ns max V = 3 V/0 V, V = 0 V/3 V S1 S32 Break-Before-Make Time Delay, t 30 ns typ R = 300 , C = 35 pF D L L 1 ns minV = 3 V Test Circuit 6 S Charge Injection 5 pC typ V = 2.5 V, R = 0 , C = 1 nF S S L Test Circuit 7 Off Isolation 72 dB typ R = 50 , C = 5 pF, f = 1 MHz L L Test Circuit 8 Channel-to-Channel Crosstalk 72 dB typ R = 50 , C = 5 pF, f = 1 MHz L L Test Circuit 9 3 dB Bandwidth ADG725 34 MHz typ R = 50 , C = 5 pF Test Circuit 10 L L ADG731 18 MHz typ C (OFF) 15 pF typ f = 1 MHz S C (OFF) D ADG725 170 pF typ f = 1 MHz ADG731 340 pF typ f = 1 MHz C , C (ON) D S ADG725 175 pF typ f = 1 MHz ADG731 350 pF typ f = 1 MHz POWER REQUIREMENTS V = 5.5 V DD I 10 A typ Digital Inputs = 0 V or 5.5 V DD 20 A max NOTES 1 Temperature range is as follows: B Version: 40C to +85C. 2 Guaranteed by design, not subject to production test. Specifications subject to change without notice. 2 REV. B