eval - adp7159 user guide ug - 811 one technology wa y ? p.o. box 9106 ? norwood, ma 02062 - 9106, u.s.a. ? tel: 781.329.4700 ? fax: 781.461.3113 ? www.analog.com evaluating the adp7159 ultralow noise, 2 a, adjustable output, rf linear regulator please see the last page for an important warning and legal terms and conditions . rev. 0 | page 1 of 9 features power supply rejection ratio ( psrr ) 68 db from 1 khz to 100 khz; 45 db at 1 mhz, v out = 3.3 v, v in = 3.8 v low noise 0.9 v rms total integrated noise from 100 hz to 100 khz 1.6 v rms total integrated noise from 10 hz to 100 khz noise spectral density: 1.7 nv / hz from 10 khz to 1 mhz low dropout voltage: 20 0 mv typical at v out = 3.3 v, i out = 2 a maximum output current: 2 a input voltage range: 2.3 v to 5.5 v low quiescent an d shutdown current initial accuracy: 0.6% at i load = 10 ma accuracy over line, load, and temperature: 1.5 % 10- lead , 3 mm 3 mm lfcsp and 8 - lead soic package s evaluation kit conte nts adp715 9 cp - 04- evalz or adp 71 59rd - 04- evalz evaluation board additional equipment needed a dc power supply multimeters for voltage and current measurements electronic or resistive loads general description the adp7159 cp - 04 - evalz and adp 71 59rd - 04 - e va lz evaluation boards demonstrate the operation and functionality of the adp7159 ult ral o w noise, 2 a , a djustable o utput, radio frequency ( rf ) linear regulator. simple device measurements such as line and load regulation, dropout voltage , and ground current , can be demonstrated using only a single voltage supply, load resistors, and a volt meter or an ammeter. complete specifications for the adp7159 ultralow noise, 2 a, a djustable o utput, radio frequency ( rf ) linear regulato r are available in the adp7159 data sheet available from analog devices, inc., and should be consulted in conjunction with this user guide when using the evaluation boards. evaluation board layouts 12953-001 figure 1 . adp7159 cp - 04 - evalz (10 - lead lfcsp ) printed circuit board (pcb) layout 12953-002 figure 2 . adp 71 59rd - 04 - evalz (8 - lead soic ) pcb layout
ug- 811 eval - adp7159 user guide rev. 0 | page 2 of 9 table of contents features ........................................................................................... 1 evaluation kit contents ................................................................ 1 additional equipment needed ..................................................... 1 ge neral description ...................................................................... 1 evaluation boards .......................................................................... 1 revision history ............................................................................ 2 evaluation board hardware .......................................................... 3 eval uation board configurations ............................................. 3 output vo ltage m easure me nts ................................................. 5 line regulation measurements ................................................ 6 load regulation measurements ............................................... 6 dropout voltage measurements ............................................... 6 ground current measurements ............................................... 7 ground current consumption ................................................. 8 ordering information ................................................................... 9 bill of materials .......................................................................... 9 revision history 3 /1 6 revision 0: initial version
eval - adp7159 user guide ug- 811 rev. 0 | page 3 of 9 evaluation board har dware evaluation board configurations the adp7159 evaluation boards come supplied with either the adp7159acpz - 04 - r7 or adp7159ard z - 04 - r7 l inear regulator , depending on the version ordered . the schematics of these evaluation board configurations are shown in figure 3 and figure 4 , and the components installed in the board are shown in ta b le 1 . the adp7159 is available in four models that optimize power dissipation and psrr performance as a function of input and o utput voltage . see ta ble 2 for selection guides. resistors r1 and r2 set the output voltage . the output voltage (v out ) is determined b y v out = 1.2 v (1 + r1/r2 ) table 1 . adp7159 cp - 04 - evalz and adp 71 59rd - 04 - evalz hardware components component description u1 adp7159acpz - 04 - r7 or adp7159ardz - 04 - r7 c1 input bypass capacitor (c in ) c2 v re g bypass capacitor (c re g ) c3 v re f bypass capacitor (c re f ) c4 bypass capacitor (c byp ) c5 output capacitor ( c out ) c6, c7 optional output capacitors (not installed in the evaluation board) r1, r2 output resistor divider (set s the output voltage) j p 1 ju mper (connects the en pin to the vin pin for automatic startup) table 2 . model selection guide for input voltage model adjustable v out range (v) v out range (v) for optimized psrr v reg (v) v in range (v) adp7159 - 01 1.2 to 1.8 1.2 to 1.8 2.1 2.3 to 5.5 adp7159 - 02 1.2 to 2.3 1.8 to 2.3 2.6 2.8 to 5.5 adp7159 - 03 1.2 to 2.9 2.3 to 2.9 3.2 3.4 to 5.5 adp7159 - 04 1.2 to 3.3 2.9 to 3.3 3.6 3.8 to 5.5
ug- 811 eval - adp7159 user guide rev. 0 | page 4 of 9 8 7 6 5 4 3 2 1 p5 4 3 2 1 p4 8 7 6 5 4 3 2 1 p6 c7 c6 1 tp2 c5 1 tp3 c4 8 3 2 1 10 9 6 7 pad 5 4 u1 r1 r2 4 3 2 1 p3 2 1 jp1 1 tp1 c1 c3 c2 4 3 2 1 p2 4 3 2 1 p1 1f 160k 10f dni 1 10f dni 1 1f 280k 1f adp7159 agnd agnd agnd agnd agnd agnd ep vin vin vreg ref ref_sense en byp vout_sense vout vout agnd agnd 1 dni = do not install. do not install this component in the evaluation board. 12953-003 figure 3 . adp7159 cp - 04 - evalz evaluation board schematic (10 - lead lfcsp) dni 1 10f dni 1 280k 160k adp7159 10f 1f 1f p1 1 2 3 4 p2 1 2 3 4 p5 1 2 3 4 5 6 7 8 c3 c1 tp1 1 jp1 1 2 p3 1 2 3 4 p4 1 2 3 4 r2 r1 c4 tp3 1 c5 tp2 1 c6 c7 p6 1 2 3 4 5 6 7 8 u1 3 4 p ad 6 5 8 1 2 7 c2 1f agnd agnd agnd agnd agnd agnd vin vout ep vreg ref ref_sense en by p vout_sense agnd agnd 12953-104 1 dni = do not install. do not install this component in the evaluation board. figure 4 . adp 71 59rd - 04 - evalz evaluation board schematic (8 - lead soic)
eval - adp7159 user guide ug- 811 rev. 0 | page 5 of 9 output voltage measu rements 3.29999 + ? v ol t m e t e r + ? volt age source load 12953-004 figure 5 . output voltage measurement setup, adp7159 cp - 04 - evalz ( 10 - lead lfcsp ) v ol t m e t e r volt age source 3.29999 + ? + ? load 12953-005 figure 6 . output voltage measurement setup, adp 71 59rd - 04 - evalz (8 - lead soic ) figure 5 and figure 6 show the connections to a voltage source and a voltmeter for basic output voltage accuracy measurements for the adp7159 cp - 04 - evalz and adp 71 59rd - 04 - evalz . use a resistor as the load for the regulator. ensure the resistor has a power rating that can handle the power dissipated across it. an electronic load can also be used as an alternative to using a resistor load . ensure that the voltage source suppl ies enough current for the expected load levels. the steps on how to connect either the adp7159 cp - 04 - evalz or adp 71 59rd - 04 - evalz to a voltage source and a voltmeter are as follows: 1. connect the negative terminal of the voltage source to one of the gnd pins on the evaluation board. 2. connect the positive terminal of the voltage source to the vin pin on the evaluation board. 3. connect a load between the evaluation board vout pin and one of the gnd pins. 4. connect the negative terminal of the voltmeter to one of the gnd pins on the evaluation board . 5. connect the positive terminal of the voltmeter to the vout pin on the evaluation board . when these steps are complete, turn on the voltage source . if the j p 1 jumper is inserted (connecting the en pin to the vin pin for automatic startup), the regulator powers up. if the load current is large, connect the voltmeter as close as possible to the output capacitor to reduce the effects of voltage drops.
ug- 811 eval - adp7159 user guide rev. 0 | page 6 of 9 line regulation meas urements for line regulation measurements, the change in the output of the regulator is measured when the input is varie d. for good line regulation, the output must maintain a minimal change in voltage with respect to varying input voltage levels. to ensure that the device is not in dropout mode during this measurement, vary v in between v in_ m in and v in_ max . see ta b le 2 for selection guides. for example, for the ad p 71 5 9 - 04 , v in can var y from 3.8 v to 5.5 v . t his measurement can be repeated under differ ent load conditions. the typical line regulation performance of an adp7159 with a 3.3 v output is shown in figure 7 . 3.25 3.26 3.27 3.28 3.29 3.30 3.31 3.32 3.33 3.34 3.35 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 5.4 5.6 v out (v) v in (v) i load = 0m a i load = 10m a i load = 100m a i load = 600m a i load = 1200m a i load = 2000m a 12953-008 figure 7 . output vo l tage (v out ) vs. input voltage (v in ), v out = 3.3 v, t a = 25c, c in = c out = 10 f load regulation meas urements for load regulation measurements, the output voltage of the regulator is monitored while the load current is varied. for a good load regulation, the output must maintain a minimal voltage change wit h respect to varying load current levels. hold the input voltage constant during this measurement. the load curren t can vary fro m 0 m a to 2 a. the typical load regulation performance of an adp7159 with a 3.3 v ou tput for an input voltage of 3.8 v is shown in figure 8 . 3.25 3.26 3.27 3.28 3.29 3.30 3.31 3.32 3.33 3.34 3.35 0.1m 1m 10m 100m 1 10 v out (v) i load (a) 12953-007 figure 8 . output voltage (v out ) vs. load current (i load ), v out = 3.3 v, t a = 25c, c in = c out = 10 f dropout voltage meas urements dropout voltage is defined as t he input to output voltage differential when the input voltage is set to the nominal output voltage. this definition is only applicable to output voltages above 2.3 v. dropout voltage increases with larger loads. figure 5 and figure 6 show the configuration for measuring dropout voltage. for mor e accurate measurements, use a second voltmeter to monitor the input voltage across the input capacitor. the input supply voltage m ay re quire adjusting for voltage drops, especially if using large load currents. the typical curve of dropout voltage measure ments over varying load current levels is shown in figure 9 . 0 0.05 0.10 0.15 0.20 0.25 10m 100m 1 10 v dropout (v) i load (a) 12953-009 figure 9 . dropout voltage vs. load current (i load ), v out = 3.3 v, t a = 25c, c in = c out = 10 f
eval - adp7159 user guide ug- 811 rev. 0 | page 7 of 9 ground current measu rements 0.004599 + ? a mm e t er + ? load volt age source 12953-010 figure 10 . ground current measurement setup, adp7159 cp - 04 - evalz (10 - lead lfcsp ) 0.004599 + ? a mm e t er + ? load volt age source 12953-0 1 1 figure 11 . ground current measurement setup, adp 71 59rd - 04 - evalz (8 - lead soic ) figure 10 and figure 11 show the connections to a voltage source and an ammeter for ground curr ent measurements for the adp7159 cp - 04 - evalz and adp 71 59rd - 04 - evalz . use a resistor as the load for the regulator. ensure the resistor has a power rating that can handle the power dissipated across it. an electronic load can also be used as an alternative to using a resistor load . ensure the voltage source supplies enough current for the expected load levels. the steps on how to connect either of the adp7159 cp - 04 - evalz and adp 71 59rd - 04 - evalz to a voltage source and an ammeter are as follows: 1. connect the positive terminal the voltage source to the vin pin on the evaluation board. 2. connect the positive terminal of the ammeter to one of the gnd pins on the evaluation board. 3. connect the negative termin al of the ammeter to the negative terminal of the voltage source. 4. connect a load between the evaluation board vout pin and the negative terminal of the voltage source. when these steps are complete, turn o n t he voltage source . if the j p 1 jumper is inserted (connecting the en pin to the vin pin for automatic startup), the regulator powers up.
ug- 811 eval - adp7159 user guide rev. 0 | page 8 of 9 ground current consu mption ground current measurements can determine how much current the internal circuits of the regulator consume while the circuits perform the regulation function. for efficiency , the regulator must consume as little current as possible. typically, the regulator uses the maximum current when supplying the largest load level (2 a). the typical ground current consump tion for various load current levels at v out = 3.3 v and t a = 25c is shown in figure 12 . when the device is disabled (en = gnd), the ground current typically drops to 0.2 a. 0 1 2 3 4 5 6 7 8 9 10 1 1 12 13 14 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 5.4 5.6 i gnd (ma) v in (v) i load = 2000m a i load = 1200m a i load = 600m a i load = 100m a i load = 10m a i load = 0m a 12953-012 figure 12 . ground current (i gnd ) vs. input voltage (v in ), v out = 3.3 v, t a = 25c, c in = c out = 10 f
EVAL-ADP7159 user guide ug-811 rev. 0 | page 9 of 9 ordering information bill of materials table 3. adp7159cp-04-evalz (10-lead lfcsp) reference designator description manufacturer part number u1 adp7159 , ic, ultralow noise, low dropout, linear regulator analog devices, inc. adp7159acpz-04-r7 c1, c5, c6 1 , c7 1 capacitor, mlcc, 10 f, 10 v, 0805, x5r, 10% tdk or equivalent c2012x5r1a106k125ab c2, c4 capacitor, mlcc, 1 f, 10 v, 0805, x5r, 10% tdk or equivalent c2012x5r1a105k/10 c3 capacitor, mlcc, 1 f, 10 v, 0603, x5r, 10% tdk or equivalent c1608x5r1a105k080ac r1, r2 resistor, 1%, 0603 case vishay dale crcw0603xxxxf jp1 jumper, plug, 2-position, single row omron electronics inc-emc div xg8s-0241 vin, vout, gnd header 0.100, single, straight, two pins sullins electronics/3m s1012e-36-nd 1 not installed in the evaluation board. table 4. adp7159rd-04-evalz (8-lead soic) reference designator description manufacturer part number u1 adp7159 , ic, ultralow noise, low dropout, linear regulator analog devices, inc. adp7159ardz-04-r7 c1, c5, c6 1 , c7 capacitor, mlcc, 10 f, 10 v, 0805, x5r, 10% tdk or equivalent c2012x5r1a106k125ab c2, c4 capacitor, mlcc, 1 f, 10 v, 0805, x5r, 10% tdk or equivalent c2012x5r1a105k/10 c3 capacitor, mlcc, 1 f, 10 v, 0603, x5r, 10% tdk or equivalent c1608x5r1a105k080ac r1, r2 resistor, 1%, 0603 case vishay dale crcw0603xxxxf jp1 jumper, plug, 2-position, single row omron electronics inc-emc div xg8s-0241 vin, vout, gnd header 0.100, single, straight, two pins sullins electronics/3m s1012e-36-nd 1 not installed in the evaluation board. esd caution esd (electrostatic discharge) sensitive device . charged devices and circuit boards can discharge without detectio n. although this product features patented or proprietary pr otection circuitry, damage may occur on devices subjected to high energy esd. therefore, proper esd precautions should be taken to avoid performance degradation or loss of functionality. legal terms and conditions by using the evaluation board discussed herein (together with any tools, components documentation or support materials, the ev aluation board), you are agreeing to be bound by the terms and conditions set forth below (agreement) unless you have purchased the evaluation board, in which case the analog devices standard terms a nd conditions of sale shall govern. do not use the evaluation board until you have read and agreed to the agreement. your use of the evaluation board shall signify your acceptance of the agreement. this a greement is made by and between you (customer) and analog devices, inc. (adi), with its principal place of business at one technology way, norwood, ma 02062, usa. subject to the terms and condition s of the agreement, adi hereby grants to customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable li cense to use the evaluation board for evaluation purposes only. customer understands and agrees that the evaluation board is provided for the sole and exclusive purpose referenced above, and agrees not to use the evaluation board for any other purpose. furthermore, the license granted is expressly made subject to the following additional limitations: customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the evaluation boar d; and (ii) permit any third party to access the evaluation board. as used herein, the term third party includes any entity other than adi, customer, their employees, affiliates and in-house consultants. the evaluatio n board is not sold to customer; all righ ts not expressly granted herein, including ownership of the evaluation board, are reserved by adi. confiden tiality. this agreement and the evaluation board shall all be c onsidered the confidential and propriet ary information of adi. customer may not disclose or transfer any portion of the evaluation board to any other party for any reason. upon discontinuation of use of the evaluation board or termination of this agreement, customer agrees to promptly return the evaluation board to adi. additional restri ctions. customer may not disassemble, decompile or reverse engine er chips on the evaluation board. customer shall inform adi of any occurred damages or any modifications or alterations it makes to the evaluation board, including but not limited to soldering o r any other activity that affects the material content of the evaluation board. modifications to the evaluation board must comply with applicable law, including but not limited to the rohs directive. termina tion. adi may terminate this agreement at any time upon giving written notice to customer. customer agrees to return to adi the evaluation board at that time. limitation of liability. the evaluation board provided hereunder is provided as is and adi makes no warranties or representations of any kind with respect to it. adi specifically disclaims any re presentations, endorsements, gua rantees, or warranties, express or implied, related to the evaluation board including, but not limited to, the implied warranty of merchantability, title, fitness for a particular purpose or noninfringement of intellectual property rights. in no event will adi and its licensors be liable for any incidental, special, indirect, or consequential damag es resulting from customers possession or use of the evaluation board, including but not limited to lost profits, delay costs, labor costs or loss of goodwill. adis total liab ility from any and all causes shall be limited to the amount of one hundred us dollars ($100.00). export. customer agrees that it will not directly or indirectly export the evaluati on board to another country, and that it will comply with all applicable united states federal laws and regulations relating to exports. governing law. this agreement shall be governed by and constru ed in accordance with the substantive laws of the commonwealth of massachusetts (excluding conflict of law rules). any legal action regarding this agreement will be heard in the state or federa l courts having jurisdiction in suffolk county, massachusetts, and customer hereby submits to the personal jurisdiction and venue of such courts. the united nations convention on contracts for the international sale of goods shall not apply to this agreement and is expressly disclaimed. ?2016 analog devices, inc. all rights reserved. trademarks and registered trademarks are the property of their respective owners. ug12953-0-3/16(0)
|
