MAX3782EVKIT [MAXIM]
Evaluation Kit for the MAX3782 ; 评估板MAX3782\n
| 型号： | MAX3782EVKIT |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Evaluation Kit for the MAX3782
|
| 文件： | 总7页 (文件大小：533K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-2470; Rev 0; 5/02
MAX3782 Evaluation Kit
General Description
Features
ꢀ Fully Assembled and Tested
The MAX3782 evaluation kit (EV kit) is an assembled
demonstration board that provides easy evaluation of the
MAX3782 dual 1.25Gbps transceiver. The MAX3782 EV
kit requires one +3.3V supply and includes an LED to
indicate the lock status of MAX3782 PLLs.
ꢀ +3.3V Operation
ꢀ Allows Easy Testing of Thermal Performance
ꢀ Easy Selection of Operating Modes
Component Suppliers
Ordering Information
SUPPLIER
AVX
Coilcraft
PHONE
FAX
PART
MAX3782EVKIT
*Exposed pad
TEMP RANGE
IC PACKAGE
803-946-0690
847-639-6400
803-626-3123
847-639-1469
-5°C to +85°C
68 QFN-EP*
Note: Please indicate that you are using the MAX3782 when con-
tacting these component suppliers
Component List
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
J31, J32, TP1,
C1–C19, C22–
37
0.1µF 10ꢀ, 10V ꢁ(iꢂn
cera(ic capacitors ꢁ0402n
4
Test points
TP2
C26, C34–C46
J34–J37,
0
33µF 10ꢀ, 16V ꢁ(iꢂn
taꢂtalu( capacitor
Not installed
C20
C21
1
1
J45–J57
J38, J39, J40
J41–J44
R1–R8
3
0
8
3
0
1
1
3-pin headers (0.1in centers)
Not installed
2.2µF 10ꢀ, 16V ꢁ(iꢂn
taꢂtalu( capacitor
0Ω 5ꢀ resistors (0ꢁ03)
10kΩ 1ꢀ resistors (0ꢁ03)
Not installed
0.01µF 10ꢀ, 10V ꢁ(iꢂn
cera(ic capacitors ꢁ0402n
C27, C28
C29
2
0
4
R9, R10, R11
R12–R25
R2ꢁ
Not iꢂstalled
3ꢁ0Ω 5ꢀ resistor (0402)
MAX3782UGK ꢁ8-pin QFN-EP
1µF 10ꢀ, 10V ꢁ(iꢂn
cera(ic capacitors ꢁ0603n
C30–C33
U1
Inverter
22pF 5ꢀ, 10V ꢁ(iꢂn
cera(ic capacitor ꢁ0402n
C47
D1
1
1
Digi-Key 29ꢁ-110ꢁ-1,
Texas Instruments SN74AHCT04PWR
U2
1
Red LED T-1 package
None
None
None
1
1
1
MAX3782 EV kit circuit board, rev A
MAX3782 EV kit data sheet
MAX3782 data sheet
SMB coꢂꢂectors, PC (ouꢂt
Digi-Key J467-ND
J1–J22, J33
23
SMA Coꢂꢂectors, side (ouꢂt
Digi-Key J502-ND
J23–J30
8
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX3782 Evaluation Kit
Interfacing to LVDS Inputs and Outputs
The LVDS outputs ꢁRDAT_ aꢂd RCLK_ n are AC-
coupled to allow direct iꢂterfaciꢂg to 50Ω oscillo-
scopes. The LVDS iꢂputs ꢁTDAT_ aꢂd TCLK_ n are
DC-coupled. For these iꢂputs to fuꢂctioꢂ, provide the
proper AC aꢂd DC voltages. The LVDS iꢂputs require
DC biasiꢂg aꢂd therefore caꢂꢂot be AC-coupled. For
this reasoꢂ, if the LVDS outputs are to be exterꢂally
looped back to the LVDS iꢂputs, the AC-coupliꢂg
capacitors oꢂ the EV board ꢁC1–C4 aꢂd C13–C16n
(ust be replaced with 0Ω shorts.
Quick Start
1n Apply +3.3V to the VCC piꢂ. Coꢂꢂect power sup-
ply grouꢂd to the GND piꢂ.
2n Disable syste( loopback by shortiꢂg the VCC side
of the LOOPEN ju(per.
3n Apply 1.25Gbps data to the RX1 aꢂd RX2 iꢂputs.
4n Apply a 125MHz refereꢂce clock to the REFCLK
iꢂputs.
5n Apply 1.25Gbps LVDS data to the TDAT1 aꢂd
TDAT2 iꢂputs.
Terminating Unused Outputs
If oꢂly oꢂe side of a differeꢂtial sigꢂal is beiꢂg
observed oꢂ a 50Ω oscilloscope, balaꢂce the circuit by
si(ilarly ter(iꢂatiꢂg the other output.
6n Apply 625MHz iꢂput clocks to the TCLK1 aꢂd
TCLK2 iꢂputs. The phase drift betweeꢂ TCLK aꢂd
REFCLK (ust be <800ps after reset ꢁrefer to the
MAX3782 data sheetn.
Temperature Sensor
The MAX3782 has aꢂ iꢂtegrated te(perature seꢂsor to
iꢂdicate the te(perature of the die. Iꢂdepeꢂdeꢂtly
power the te(perature seꢂsor circuit by applyiꢂg 3.3V
to the ceꢂter piꢂ of J39 aꢂd applyiꢂg grouꢂd to the
GND piꢂ. Moꢂitor the TEMPSENS output voltage at TP1
to allow calibratioꢂ of the te(perature seꢂsor.
7n Briefly short the GND side of the RESET ju(per.
Move the short to the VCC side for ꢂor(al operatioꢂ.
8n The LOCK LED should light, iꢂdicatiꢂg that the
traꢂs(itter aꢂd receiver are iꢂ lock.
9n The data fro( RX1 should be preseꢂt at the
RDAT1 output, with the recovered 625MHz clock
at the RCLK1 output.
Exposed-Pad Package
The exposed-pad ꢁEPn, 68-piꢂ QFN iꢂcorporates fea-
tures that provide a very low ther(al resistaꢂce path for
heat re(oval fro( the IC. The pad is electrical grouꢂd
oꢂ the MAX3782 aꢂd (ust be soldered to the circuit
board for proper ther(al aꢂd electrical perfor(aꢂce.
10n The data applied at the TDAT1 iꢂput should be
preseꢂt at the TX1 output.
Detailed Description
Interfacing to CML Inputs and Outputs
All CML iꢂputs ꢁRX1 aꢂd RX2 n aꢂd outputs ꢁTX1 aꢂd
TX2 n oꢂ the MAX3782 are AC-coupled to si(plify test-
iꢂg. Differeꢂtial iꢂput data should be betweeꢂ 370(V
P-P
aꢂd 2000(V
ꢁ185(V
aꢂd 1000(V
or (easured
P-P
P-P
P-P
siꢂgle eꢂdedn. The CML outputs are AC-coupled to allow
for direct coꢂꢂectioꢂ to 50Ω oscilloscopes.
Table 1. Controls, Test Points and LEDs
NAME
TYPE
PIN
VCC
GND
VCC
GND
VCC
GND
LOCK
DESCRIPTION
Short for ꢂor(al operatioꢂ
LOOPEN
ꢁJU38n
3-piꢂ header
Short to eꢂable loopback testiꢂg
Short to coꢂꢂect VCC for the TEMPSENS circuit to the rest of the VCC ꢂetwork
Short to disable the TEMPSENS circuit
VCCTEMP
ꢁJU39n
3-piꢂ header
Short for ꢂor(al operatioꢂ
RESET
ꢁJU40n
3-piꢂ header
LED
Mo(eꢂtarily short to reset FIFO aꢂd receiver co(poꢂeꢂts
D1 lights oꢂly wheꢂ the traꢂs(itter PLL aꢂd both receiver PLLs are iꢂ lock
D1
Wheꢂ JU3 is shorted to VCC, the voltage at TP1 is proportioꢂal to the die
juꢂctioꢂ te(perature
TP1
TP2
Test poiꢂt
Test poiꢂt
TEMPSENS
LOCK
TP2 caꢂ be used to (oꢂitor the voltage at the LOCK output
2
_______________________________________________________________________________________
MAX3782 Evaluation Kit
REFCLK+
J10
SMB
REFCLK+
VCC
REFCLK-
RDAT1+
J2
RCLK1+
J4
VCC
J9
SMB
SMB
SMB
J57
R9
10kΩ
RDAT1-
J1
R25
OPEN
J3
J33
SMB
SMB
SMB
TDO-TJAG
RCLK1-
R24
R10
10kΩ
C29
OPEN
VCC
OPEN
C13
C14
C15
C16
VCC
0.1µF
0.1µF
0.1µF
0.1µF
BIAS-1-POS
BIAS-1-NEG
C27
C28
0.01µF
58
0.01µF
68
TDO-JTAG
67
VCC5
66
RDAT1-
65
64
63
62
GND
61
60
59
RDAT1+
RCLK1-
RCLK1+
VCC6
REFCLK- REFCLK+
GND
J49 J50 J51 J52
1
2
3
GND
R12
OPEN
J11
SMB
TCLK2+
TCLK2-
TDAT2+
TDAT2-
R13
OPEN
J12
SMB
R14
OPEN
J13
4
SMB
R15
OPEN
J14
5
6
SMB
GND
7
TRST-TJAG
VCC5
VCC
8
C1
0.1µF
U1
J15
9
SMB
RCLK2+
RCLK2+
RCLK2-
RDAT2+
RDAT2-
GND
MAX3782
C2
0.1µF
J16
10
11
12
SMB
RCLK2-
J17
C3
0.1µF
SMB
RDAT2+
C4
0.1µF
J18
SMB
RDAT2-
13
14
15
VCC
R11
10kΩ
LOCK
LOCK
TP2
VCC3
VCC3
VCC
C19
0.1µF
D1
RED
LED
16
17
RXFIL2
GND
R26
360Ω
U2-A
C47
22pF
2
1
TDI-JTAG TMS-JTAG TCK-JTAG
18 19 20
GND
21
VCC5
22
RX1+
23
RX1-
24
VCC5
25
GND
26
VCC5
27
RX2+
28
74HCO4
VCC
VCC
VCC
VCC VCC
VCC
VCC
J34
J35
R20
OPEN
R21
OPEN
R22
OPEN
SMB
J19
SMB
J20
J36
J37
SMB
J21
SMB
J22
J53 J54 J55 J56
RX1+ RX1- RX2+ RX2-
C12
0.1µF
C11
0.1µF
J24
C10
0.1µF
J23
J25
SMATAB SMATAB
RX1+ RX1-
SMATAB
Figure 1. MAX3782 EV Kit Schematic (1 of 2)
_______________________________________________________________________________________
3
MAX3782 Evaluation Kit
R1
R5
VCC
TDAT1-
TCLK1-
0Ω
0Ω
J5
SMB
J7
SMB
BIAS-1-POS BIAS-1-NEG
J45
C30
C22
0.1µF
1µF
TDAT1-
TDAT1+
J6
SMB
TCLK1+
J8
SMB
J46
J47
J48
BIAS-1-NEG
BIAS-1-POS
BIAS-2-POS
BIAS-2-NEG
R2
0Ω
R6
0Ω
VCC1
TDAT1+
TCLK1-
J43
J44
J42
LVDS BIAS-
LVDS BIAS+
CML BIAS+
C31
1µF
C23
0.1µF
VCC
TCLK1+
R3
0Ω
R7
0Ω
VCC2
J40
R19
OPEN
R18
OPEN
R17
OPEN
R16
VCC
OPEN
C32
1µF
C24
0.1µF
57
56
55
54
TCLK1+
53
52
TDAT1-
TDAT1+
TCLK1-
VCC6
RESET
J41
J31
CML BIAS-
VCC
51
R4
0Ω
R8
0Ω
VCC3
GND
VCC1
C33
C25
0.1µF
C20
33µF
C21
C26
0.1µF
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
VCC1
TXFIL
1µF
2.2µF
J32
C18
GND
0.1µF
VCC2
C45
VCC3
VCC1
VCC
C46
C44
0.1µF
GND
VCC4
TX2+
TX2-
0.1µF
0.1µF
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
C5
0.1µF
C34
0.1µF
C35
0.1µF
C36
0.1µF
C37
C38
0.1µF
J30
0.1µF
SMATAB
TX2+
C6
0.1µF
U1
VCC
VCC
J29
SMATAB
TX2-
MAX3782
C39
0.1µF
C40
0.1µF
C41
0.1µF
C42
0.1µF
C43
0.1µF
VCC
VCC4
GND
DISTRIBUTED FILTER CAPS
VCC
VCC4
TX1+
C7
0.1µF
J28
SMATAB
TX1+
C8
0.1µF
J27
SMATAB
TX1-
TX1-
VCC
VCC4
VCC6
RXFIL1
VCC2
GND
VCC
C17 VCC2
0.1µF
RX2-
29
VCC5
30
GND
31
VCCTEMP TEMPSENS LOOPEN
32 33 34
VCC
VCC
J38
R23
OPEN
LOOPEN
TP1
VCC
C9
0.1µF
J26
J39
SMATAB
VCCTEMP
Figure 1. MAX3782 EV Kit Schematic (2 of 2)
_______________________________________________________________________________________
4
MAX3782 Evaluation Kit
1.0"
Figure 2. MAX3782 EV Kit Component Placement Guide—Component Side
_______________________________________________________________________________________
5
MAX3782 Evaluation Kit
1.0"
1.0"
Figure 4. MAX3782 EV Kit PC Board Layout—Solder Side
Figure 3. MAX3782 EV Kit PC Board Layout—Component Side
1.0"
1.0"
Figure 6. MAX3782 EV Kit PC Board Layout—Ground Plane
Figure 5. MAX3782 EV Kit PC Board Layout—Power Plane
6
_______________________________________________________________________________________
MAX3782 Evaluation Kit
1.0"
Figure 7. MAX3782 EV Kit Component Placement Guide—Solder Side
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 7
© 2002 Maxi( Iꢂtegrated Products
Priꢂted USA
is a registered trade(ark of Maxi( Iꢂtegrated Products.
相关型号：
MAX3783UCM+D
Interface Circuit, BIPolar, PQFP48, 7 X 7 MM, 1 MM HEIGHT, ROHS COMPLIANT, MS-026ABC-HD, TQFP-48
MAXIM
MAX3783UCM+TD
Interface Circuit, BIPolar, PQFP48, 7 X 7 MM, 1 MM HEIGHT, ROHS COMPLIANT, MS-026ABC-HD, TQFP-48
MAXIM
©2020 ICPDF网 联系我们和版权申明