ANALOG Devices AD4857 Buffered 8-Channel Simultaneous Sampling User Guide

Cov neeg siv phau ntawv qhia
TIAB SA 4857
UA-2242

Cov ntsiab lus zais

1 AD4857 Buffered 8-Channel Simultaneous Sampling

2 NTA

3 QHOV TSEEB

4 SOFTWARE YUAV TSUM

5 KEV KAWM NTAWV BOARD KIT CONTENTS

6 EVALUATION BOARD PHOTOGRAPH

7 Kev piav qhia dav dav

8 TSEV KAWM NTAWV HARDWARE

9 KEV LAG LUAM BOARD SCHEMATICS THIAB ARTWORK

10 Cov ntaub ntawv / Cov ntaub ntawv

10.1 Cov ntaub ntawv

AD4857 Buffered 8-Channel Simultaneous Sampling

Ntsuam xyuas AD4857 Buffered, 8-Channel Simultaneous Sampling, 16-Bit 1 MSPS DAS

NTA

► Tag nrho featured ntsuam xyuas board rau lub TIAB SA 4857
► 8 txoj kev tawm tswv yim muaj los ntawm SMA connectors
► On-board siv Circuit Court thiab cov khoom siv fais fab
► Muaj peev xwm nyob ib leeg los ntawm FMC txuas thiab / lossis cov ntsiab lus xeem
► PC software rau kev tswj thiab kev txheeb xyuas cov ntaub ntawv ntawm lub sijhawm thiab zaus sau npe
► ZedBoard-tshaj
► Tau tshaj lwm FMC maub los boards

QHOV TSEEB

► PC khiav Windows® 10 operating system lossis siab dua
► Digilent ZedBoard nrog 12 V phab ntsa adapter fais fab mov
► Precision teeb liab qhov chaw
► SMA cables (inputs rau pawg thawj coj saib xyuas)
► USB cable

SOFTWARE YUAV TSUM

► Analysis | Tswj | Kev Ntsuam Xyuas (ACE) Software
► SIB 4857 ACE plugin los ntawm plug-in manager

KEV KAWM NTAWV BOARD KIT CONTENTS

► EVAL-AD4857FMCZ kev ntsuam xyuas pawg thawj coj saib
► Micro-SD nco daim npav (nrog adapter) uas muaj qhov system board khau raj software thiab Linux OS

EVALUATION BOARD PHOTOGRAPH

Kev piav qhia dav dav

EVAL-AD4857FMCZ yog tsim los ua kom pom qhov ua tau zoo ntawm AD4857 thiab muab kev nkag mus rau ntau qhov kev xaiv teeb tsa uas tau nkag los ntawm qhov yooj yim ACE plug-in graphical user interface (GUI). AD4857 yog qhov tsis txaus siab, 8-channel ib txhij sampling, 16-ntsis, 1 MSPS cov ntaub ntawv nrhiav tau qhov system (DAS) nrog qhov sib txawv, ntau hom kev nkag mus.
EVAL-AD4857FMCZ on-board Cheebtsam suav nrog cov hauv qab no:
► Ib TXC 6655 siab precision, tsis tshua muaj drift, 4.096 V voltage siv (tsis siv los ntawm lub neej ntawd)
► Ib TIAB SA 1761, tsis tshua muaj suab nrov, 1.8V, 2.5V, thiab 5V qis tso tawm (LDO) regulators
► Ib TIAB SA 8330 low quiescent tam sim no (I) boost converter
Rau tag nrho cov ntsiab lus ntawm AD4857, saib AD4857 cov ntaub ntawv, uas Q yuav tsum tau sab laj nrog rau cov lus qhia no thaum siv EVAL-AD4857FMCZ pawg thawj coj saib xyuas.

REVISION keeb kwm
6/2024/0—Revision XNUMX: Initial Version
QUICK PIB GUIDE
Ua cov kauj ruam hauv qab no los pib ntsuas EVALAD4857FMCZ:

Download tau thiab nruab lub ACE Software los ntawm ACE web nplooj. Yog tias ACE twb tau teeb tsa hauv lub khoos phis tawj, xyuas kom meej tias qhov tseeb version tau raug siv los ntawm nyem rau ntawm Kos Rau Hloov Kho Tshiab icon hauv ACE Software sidebar, raws li pom hauv daim duab 2.
Khiav lub ACE Software, xaiv tus Plug-in Manager los ntawm ACE sidebar rau nruab lub rooj tsavxwm plug-in uas txhawb nqa AD4857 kev ntsuam xyuas pawg thawj coj saib, thiab xaiv Muaj Cov Pob Khoom, raws li qhia hauv daim duab 3. Koj tuaj yeem siv qhov chaw tshawb nrhiav los pab lim cov cov npe ntawm pawg thawj coj saib xyuas AD4857 pawg thawj coj saib. Saib cov ACE Quickstart - Siv ACE thiab txhim kho Plug-ins phau ntawv qhia kom paub ntxiv.

Ntxig Micro-SD daim npav (nrog rau lub adapter) uas tau muab rau hauv cov khoom siv ntsuas ntsuas rau hauv SD daim npav qhov nyob rau hauv qab ntawm ZedBoard. Yog tias muaj qhov yuav tsum tau rov ua dua lossis tsim daim npav Micro-SD tshiab, saib cov lus qhia hauv qab no pom ntawm Analog Devices, Inc., webqhov chaw: ADI Kuiper Linux nrog kev txhawb nqa rau ACE Kev Ntsuas.
Xyuas kom ZedBoard boot configuration jumpers tau teem caij siv Micro-SD daim npav raws li qhia hauv daim duab 4. Kom tsis txhob muaj kev puas tsuaj thaum JVIO hloov raws li tau piav qhia hauv Table 1, xyuas kom meej tias VADJ SELECT jumper raug teeb tsa rau qhov tseeb vol.tage rau EVAL-AD4857FMCZ.

Txuas EVAL-AD4857FMCZ rau FMC txuas ntawm ZedBoard.
Txuas USB cable los ntawm lub computer mus rau J13 / USB OTG chaw nres nkoj, thiab txuas 12 V fais fab mov rau J20 / DC input.

Xaub lub SW8 / POWER hloov hauv ZedBoard mus rau ntawm txoj haujlwm. Lub ntsuab LD13 / POWER LED tig rau thiab ua raws li xiav LD12 / DONE LED (hauv ZedBoard). Lub DS1 LED nyob rau hauv EVAL-AD4857FMCZ kuj tig rau.
Liab LD7 LED ntsais kwv yees li 20 sec rau 30 sec tom qab, qhia tias cov txheej txheem khau raj tiav.

Tua tawm ACE Software los ntawm Analog Devices folder hauv Windows Start menu. EVAL-AD4857FMCZ tshwm hauv ACE Pib hauv Cov Khoom Siv Txuas Txuas view, raws li qhia hauv daim duab 5.
Yog tias EVAL-AD4857FMCZ tsis tshwm sim ntawm Cov Khoom Siv Txuas Txuas view, lub plug-in tseem tuaj yeem raug tso tawm los ntawm Tshawb Nrhiav Tsis Muaj Cov Khoom Siv Kho Mob. Nyem Proceed To Documentation los qhib cov ntaub ntawv plug-in rau kev pab daws teeb meem nrog rau cov lus piav qhia ntawm txhua lub qhov rais thiab cov yam ntxwv hauv lub plug-in.

QUICK PIB GUIDE

TSEV KAWM NTAWV HARDWARE

AD4857 yog qhov tsis txaus siab, 8-channel ib txhij sampling, 16-ntsis 1 MSPS DAS nrog qhov sib txawv, ntau hom kev nkag mus. AD4857 muaj ib tug on-chip qis drift 4.096 V sab hauv voltage siv; Txawm li cas los xij, nws kuj tseem tuaj yeem lees txais kev siv sab nraud siv los ntawm REFIO tus pin thiab muab rau ntawm lub nkoj TXC 6655. Cov cuab yeej ua haujlwm los ntawm cov kab hluav taws xob sib txawv, muab los ntawm on-board LDO regulators raws li tau piav qhia hauv Cov Khoom Siv Hluav Taws Xob. Muaj kev xaiv los txuas cov khoom siv sab nraud thiab tau piav qhia hauv Table 1.

HARDWARE LINK OPTIONS
Table 1 piav qhia txog qhov txuas kev xaiv ua haujlwm thiab cov kev xaiv lub zog txuas txuas. EVAL-AD4857FMCZ tuaj yeem siv los ntawm ntau qhov chaw, raws li tau piav qhia hauv Cov Khoom Siv Hluav Taws Xob. Los ntawm lub neej ntawd, cov khoom siv hluav taws xob xav tau rau EVAL-AD4857FMCZ los ntawm ZedBoard controller board. Lub hwj chim mov yog tswj los ntawm on-board regulators uas tsim kom muaj cov khoom siv bipolar.

Table 1. Jumper Paub meej nrog lub Hoobkas Default Chaw

JODIFF rau J7DIFF	Tsis tso	Offset Calibration Jumper. Ntxig JODIFF rau J7DIFF jumper txuas tso cai luv luv Circuit Court sib txuas ntawm cov khoom siv los ntsuas AD4857 offset thiab / lossis ua qhov offset calibration.
J0+ to J7+	Tsis tso	Analog Input rau hauv av txuas. Ntxig lub J0 + rau J7 + jumper txuas mus txuas rau AGND tus pin, qhov sib txuas zoo analog tawm tswv yim.
J0-J7-	Tsis tso	Analog Input rau hauv av txuas. Ntxig J0- rau J7- jumper txuas mus txuas rau AGND tus pin, qhov sib txuas tsis zoo analog tawm tswv yim.
JV 12 V	A	JV12V txuas xaiv lub hwj huam mov rau EVAL-AD4857FMCZ kev ntsuam xyuas pawg thawj coj saib. Nyob rau hauv txoj hauj lwm A, cov khoom tsis raug cai rau cov khoom siv hauv LDO regulators yog muab los ntawm ZedBoard 12 V mov. Nyob rau hauv txoj hauj lwm B, cov khoom siv sab nraud uas tsis muaj kev tswj hwm rau ntawm lub rooj tsavxwm LDO regulators raug coj los ntawm V12V_EXT connector.
JSHIFT	A	JSHIFT txuas xaiv hom fais fab mov rau AD4857. Hauv Txoj Haujlwm A, V_CC pin = +24 V, v_EE pin = −24 V. Hauv Txoj Haujlwm B, V_CCpin = +44 V, v_EE pin = −4 V. Yog tsis tau tso, V_CC pin = +24 V, v_EE pin = −4 V.
JVCC	A	JVCC txuas xaiv V_CC pin muab qhov chaw. Hauv Txoj Haujlwm A, V_CC tus pin yog muab los ntawm lub nkoj TIAB SA 8330 DC / DC converter. Hauv Txoj Haujlwm B, V_CC tus pin yog muab txawm tias VCC_EXT connector.
JVEE	A	JVEE txuas xaiv V_EE pin muab qhov chaw. Hauv Txoj Haujlwm A, V_EE tus pin yog muab los ntawm on-board LT8330 DC / DC converter. Hauv Txoj Haujlwm B, V_EE tus pin yog muab txawm tias VEE_EXT connector.
JVDDH	A	JVDDH txuas xaiv V_DDH pin muab qhov chaw. Hauv Txoj Haujlwm A, V_DDH tus pin yog muab los ntawm lub nkoj TIAB SA 1761 2.5 V LDO regulator Hauv Txoj Haujlwm B, V_DDH tus pin yog muab txawm tias VDDH_EXT connector. Yog tsis tau tso, V_DDH tus pin tuaj yeem khi rau AGND tus pin los ntawm kev ntxig R40 resistor. Txhawm rau lov tes taw lub LDO regulator, khi V_DDH pin rau GND pin. Nrog lub regulator yog neeg xiam oob qhab, txuas V_DDL tus pin rau ib qho khoom siv sab nraud hauv thaj tsam ntawm 1.71 V rau 1.89 V los ntawm JVDDL txuas.
JVDD	A	JVDD txuas xaiv V_DD pin muab qhov chaw. Hauv Txoj Haujlwm A, V_DD tus pin yog muab los ntawm on-board LT1761 5 V LDO regulator. Hauv Txoj Haujlwm B, V_DD tus pin yog muab txawm tias VDD_EXT connector.
JVDDL	Tsis tso	JVDDL txuas xaiv V_DDL pin muab qhov chaw. Hauv Txoj Haujlwm A, V_DDL tus pin yog muab los ntawm on-board LT1761 1.8 V LDO regulator. Txhawm rau siv qhov kev teeb tsa no, khi V_DDH pin rau hauv av los ntawm JVDDH txuas. Hauv Txoj Haujlwm B, V_DDL tus pin yog muab txawm tias VDDL_EXT connector. Txhawm rau siv qhov kev teeb tsa no, khi V_DDH pin rau hauv av los ntawm JVDDH txuas. Yog tias tsis muab tso rau, tus tswj hwm sab hauv LDO yog siv rau JVDDH txuas mus rau hauv Txoj Haujlwm A lossis Txoj Haujlwm B.

JVIO	Tsis tso	Qhov txuas JVIO xaiv V_IO pin muab qhov chaw. Yog tsis tau tso, V_IO tus pin yog muab los ntawm ZedBoard (default). Tsis tas li ntawd, V_IO tus pin tuaj yeem muab los ntawm ob qho tib si on-board LDO regulators lossis ib qho khoom siv sab nraud. Hauv Txoj Haujlwm A, V_IO tus pin yog muab los ntawm on-board LT1761 LDO regulator nrog cov zis voltage nyob ntawm JVIO_LDO txuas. R66 resistor (pom hauv Daim duab 7) yog unsoldered. Hauv Txoj Haujlwm B, V_IO tus pin yog muab txawm tias VIO_EXT connector. R66 resistor yog unsoldered. Nco ntsoov daim teb programmable rooj vag array (FPGA) duab muab ua haujlwm ntawm 2.5 V digital qib; Yog li ntawd, siv ceev faj thaum hloov qhov chaw nyob ntawm JVIO txuas jumper.
JVIO_LDO	Tsis tso	JVIO_LDO txuas xaiv LT1761 LDO regulator tso zis voltage thaum JVIO txuas nyob rau hauv Txoj Haujlwm B. Ntxig, LT1761 tso zis voltagyog 3.3v. Tsis tso, LT1761 tso zis voltagyog 1.8v.

CONNECTORS THIAB SOCKETS
Cov connectors thiab sockets ntawm EVAL-AD4857FMCZ tau teev tseg hauv Table 2.
Table 2. On-Board Connectors

Txuas	Muaj nuj nqi
SMA0+ rau SMA7+	Zoo analog input Subminiature Version A (SMA) rau Channel 0 txog Channel 7
SMA0- to SMA7-	Tsis zoo analog input SMA rau Channel 0 txog Channel 7
P1	FPGA mezzanine card (FMC) connector

COV PHOOJ YWG
Lub ZedBoard muab 12 V rau lub zog rau cov ntsia hlau rau cov khoom sib txawv ntawm EVAL-AD4857FMCZ. AD4857 siv tsib lub hwj huam mov nram qab no:
► Positive High Voltage fais fab mov (VCCpin)
► Negative High Voltage fais fab mov (VEEpin)
► Low Voltage fais fab mov (VDDpin)
► 1.8V fais fab mov (VDDLpin)
► Digital fais fab mov (VIOpin)

Ib qho kev sib xyaw ntawm cov TIAB SA 8330 DC / DC converter thiab TIAB SA 1761 LDO regulator tsim tag nrho cov khoom xav tau ntawm lub rooj tsavxwm.
Table 3. Cov khoom siv hluav taws xob zoo muaj nyob hauv EVAL-AD4857FMCZ

Fais fab mov (V)	Muaj nuj nqi	Cheebtsam
+24	VCC	TIAB SA 8330
-24	SAIB	TIAB SA 8330
+2.5	VDDH	TIAB SA 1761
+5	VDD	TIAB SA 1761
+1.8	VIO	TIAB SA 1761

REFERENCE CIRCUIT
Los ntawm lub neej ntawd, AD4857 nyob rau hauv EVAL-AD4857FMCZ siv lub suab nrov sab hauv, tsis tshua muaj drift (10 ppm / ° C siab tshaj), qhov kub thiab txias compensated band-gap siv uas yog lub Hoobkas trimmed rau 4.096 V thiab sab hauv siv tsis.
Raws li kev xaiv xaiv, ib TXC 6655 siab precision, tsis tshua muaj drift (2 ppm / ° C siab tshaj), 4.096 V voltage siv kuj muab. Qhov kev siv sab nraud no tuaj yeem siv rau hauv ob qhov kev teeb tsa sib txawv, raws li tau piav qhia hauv AD4857 cov ntaub ntawv thiab raws li hauv qab no:
► Sab nrauv siv nrog sab hauv tsis. Rau qhov kev teeb tsa no, txuas rau sab nraud siv rau REFIO tus pin thiab populate R62 resistor qhia hauv daim duab 7.
► Sab nrauv siv nrog cov neeg xiam oob khab sab hauv. Rau qhov kev teeb tsa no, txuas cov lus siv sab nraud rau REFBUF tus pin thiab populate R46 resistor qhia hauv daim duab 7 thiab tseem txuas REFIO qhov ntsuas taw tes rau hauv av.

KEV LAG LUAM BOARD SCHEMATICS THIAB ARTWORK

ESD ceev faj
ESD (electrostatic paug) rhiab ntaus ntawv. Cov khoom siv hluav taws xob thiab hluav taws xob hluav taws xob tuaj yeem tso tawm yam tsis muaj kev kuaj pom. Txawm hais tias cov khoom no muaj patented lossis proprietary tiv thaiv circuitry, kev puas tsuaj yuav tshwm sim ntawm cov khoom siv hluav taws xob ESD. Yog li ntawd, yuav tsum tau ceev faj kom raug ESD kom tsis txhob muaj kev ua haujlwm tsis zoo lossis tsis ua haujlwm.
Cov Cai thiab Cov Cai
Los ntawm kev siv lub Rooj Tswjhwm Saib Xyuas Kev Ntsuam Xyuas tau tham hauv no (ua ke nrog txhua yam cuab yeej, cov ntaub ntawv cov ntaub ntawv lossis cov ntaub ntawv txhawb nqa, "Tsev Saib Xyuas Kev Ntsuam Xyuas"), koj pom zoo ua raws li cov ntsiab lus thiab cov xwm txheej tau teev tseg hauv qab no ("Kev Pom Zoo") tshwj tsis yog tias koj tau yuav lub Lub Rooj Tswjhwm Saib Xyuas, nyob rau hauv rooj plaub no Analog Devices Standard Terms and Conditions of Sale yuav tsum tswj. Tsis txhob siv Pawg Saib Xyuas Kev Ntsuam Xyuas kom txog thaum koj tau nyeem thiab pom zoo rau Daim Ntawv Pom Zoo. Koj qhov kev siv Pawg Saib Xyuas Kev Ntsuam Xyuas yuav qhia koj qhov kev lees paub ntawm Daim Ntawv Pom Zoo. Daim ntawv cog lus no yog tsim los ntawm thiab nruab nrab ntawm koj ("Cov Neeg Siv Khoom") thiab Analog Devices, Inc. ("ADI"), nrog rau nws qhov chaw tseem ceeb ntawm kev lag luam ntawm Raws li cov lus cog tseg thiab cov xwm txheej ntawm Daim Ntawv Pom Zoo, ADI tau tso cai rau Cov Neeg Siv Khoom Dawb, txwv, tus kheej, ib ntus, tsis suav nrog, tsis yog sublicensable, tsis hloov pauv daim ntawv tso cai rau siv lub Rooj Tswjhwm Saib Xyuas Kev Ntsuam Xyuas Tshwm Sim Xwb. Cov neeg siv khoom nkag siab thiab pom zoo tias Pawg Saib Xyuas Kev Ntsuas yog muab rau lub hom phiaj nkaus xwb thiab tshwj xeeb uas tau hais los saum toj no, thiab pom zoo tsis siv Pawg Saib Xyuas Kev Ntsuas rau lwm lub hom phiaj. Tsis tas li ntawd, daim ntawv tso cai tso cai tau nthuav tawm raws li cov kev txwv ntxiv hauv qab no: Cov neeg siv khoom yuav tsum tsis txhob (i) xauj, xauj, tso saib, muag, hloov pauv, muab, sublicense, lossis faib rau Pawg Saib Xyuas Kev Ntsuam Xyuas; thiab (ii) tso cai rau ib tog twg los nkag rau Pawg Saib Xyuas Kev Ntsuam Xyuas. Raws li siv nyob rau hauv no, lo lus "Third Party" suav nrog lwm lub koom haum uas tsis yog ADI, Cov Neeg Siv Khoom, lawv cov neeg ua haujlwm, cov koom tes thiab cov kws pab tswv yim hauv tsev. Lub Rooj Tswjhwm Saib Xyuas Kev Ntsuam Xyuas tsis raug muag rau Cov Neeg Siv Khoom; tag nrho cov cai uas tsis tau tso cai qhia meej hauv no, suav nrog cov tswv cuab ntawm Pawg Saib Xyuas Kev Ntsuas, yog tshwj tseg los ntawm ADI. Kev tsis pub leej twg paub. Daim ntawv cog lus no thiab Pawg Saib Xyuas Kev Ntsuam Xyuas yuav tsum suav tias yog cov ntaub ntawv tsis pub lwm tus paub thiab muaj tswv cuab ntawm ADI. Cov neeg siv khoom yuav tsis nthuav tawm lossis hloov ib feem ntawm Pawg Saib Xyuas Kev Ntsuam Xyuas mus rau lwm tus tog twg yog vim li cas. Thaum txiav tawm ntawm kev siv Pawg Saib Xyuas Kev Ntsuam Xyuas lossis kev txiav tawm ntawm Daim Ntawv Pom Zoo no, Cov Neeg Siv Khoom pom zoo xa rov qab Pawg Saib Xyuas Kev Ntsuas rau ADI tam sim ntawd. Kev txwv ntxiv. Cov neeg siv khoom tsis tuaj yeem tshem tawm, decompile lossis thim rov qab cov khoom siv hluav taws xob ntawm Pawg Saib Xyuas Kev Ntsuas. Cov neeg siv khoom yuav tsum ceeb toom rau ADI txog ib qho kev puas tsuaj tshwm sim lossis kev hloov kho lossis kev hloov pauv uas nws ua rau Pawg Saib Xyuas Kev Ntsuam Xyuas, suav nrog tab sis tsis txwv rau kev sib tsoo lossis lwm yam haujlwm uas cuam tshuam rau cov ntsiab lus ntawm Pawg Saib Xyuas Kev Ntsuas. Kev hloov kho rau Pawg Saib Xyuas Kev Ntsuam Xyuas yuav tsum ua raws li txoj cai lij choj, suav nrog tab sis tsis txwv rau RoHS Cov Lus Qhia. TERMINATION. ADI tuaj yeem txiav Daim Ntawv Pom Zoo no txhua lub sijhawm thaum muab ntawv ceeb toom rau Cov Neeg Siv Khoom. Cov neeg siv khoom pom zoo rov qab mus rau ADI Pawg Saib Xyuas Kev Ntsuam Xyuas thaum lub sijhawm ntawd. LIMITATION OF LIABILITY. LUB TSEV KAWM NTAWV NTAWM NO yog muab "raws li yog" thiab ADI tsis muaj kev lav phib xaub lossis kev sawv cev ntawm txhua yam uas muaj kev hwm rau nws. ADI tshwj xeeb tshaj tawm txhua yam kev sawv cev, kev pom zoo, kev lees paub, lossis kev lav phib xaub, nthuav tawm lossis hais qhia, cuam tshuam rau daim ntawv ntsuam xyuas suav nrog, tab sis tsis txwv rau, NTAWM NO, WARRANTYOF WARRANTY Rau ib lub hom phiaj tshwj xeeb lossis tsis muaj kev cuam tshuam ntawm kev txawj ntse muaj cai. YUAV UA LI CAS ADI thiab nws cov ntawv tso cai yuav raug lav rau ib qho xwm txheej, tshwj xeeb, tsis ncaj, lossis qhov kev puas tsuaj tshwm sim los ntawm cov neeg siv khoom muaj los yog siv qhov kev ntsuam xyuas BOARD, tsis muaj kev cuam tshuam, QHOV CHAW UA HAUJ LWM, cov nqi ua haujlwm lossis kev poob haujlwm zoo. ADI tag nrho kev lav phib xaub los ntawm ib qho twg thiab txhua qhov laj thawj yuav tsum raug txwv rau tus nqi ntawm ib puas peb las ($ 100.00). EXPORT. Cov neeg siv khoom pom zoo tias nws yuav tsis ncaj qha lossis tsis ncaj qha xa tawm Pawg Saib Xyuas Kev Ntsuam Xyuas mus rau lwm lub tebchaws, thiab nws yuav ua raws li tag nrho cov kev cai lij choj hauv Tebchaws Meskas thiab cov cai tswjfwm ntsig txog kev xa tawm. TSEV KAWM NTAWV. Daim ntawv cog lus no yuav raug tswj hwm los ntawm thiab txhais raws li cov cai tseem ceeb ntawm Lub Tebchaws ntawm Massachusetts (tsis suav nrog kev tsis sib haum xeeb ntawm txoj cai lij choj). Txhua yam kev cai lij choj hais txog Daim Ntawv Pom Zoo no yuav raug hnov hauv lub xeev lossis tsoomfwv cov tsev hais plaub uas muaj kev txiav txim plaub ntug hauv Suffolk County, Massachusetts, thiab Cov Neeg Siv Khoom yuav xa mus rau tus kheej txoj cai thiab qhov chaw ntawm cov tsev hais plaub.

Cov ntaub ntawv / Cov ntaub ntawv

ANALOG Devices AD4857 Buffered 8-Channel Simultaneous Sampling [ua pdf] Cov neeg siv phau ntawv qhia
EVAL-AD4857FMCZ, AD4857 Buffered 8-Channel Simultaneous Sampling, AD4857, Buffered 8-Channel Simultaneous Sampling, Simultaneous Samplias, Sampling

Cov ntaub ntawv

Cov neeg siv phau ntawv