MAX9989EVKIT [MAXIM]
Evaluation Kits for the MAX9989/MAX9990 ; 评估套件为MAX9989 / MAX9990\n
| 型号： | MAX9989EVKIT |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Evaluation Kits for the MAX9989/MAX9990
|
| 文件： | 总7页 (文件大小：226K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-2703; Rev 0; 11/02
MAX9989/MAX9990 Evaluation Kits
General Description
Features
The MAX9989/MAX9990 evaluation kits (EV kits) simpli-
fy the evaluation of the MAX9989/MAX9990 LO buffers.
They are fully assembled and tested at the factory.
Standard 50Ω SMA connectors are included for the
input and both outputs to allow quick and easy evalua-
tion on the test bench.
ꢀ Fully Assembled and Tested EV Kits
ꢀ +14dBm to +20dBm Adjustable Output Power
1dB Output Power Variation
ꢀ
ꢀ Isolated PLL Output (+3dBm)
ꢀ Low Output Noise: -170dBc/Hz at +17dBm
ꢀ 40dB Reverse Isolation
This document provides a list of equipment required to
evaluate the device, a straightforward test procedure to
verify functionality, a circuit schematic, a bill of materials
(BOM), and artwork for each layer of the PC boards.
ꢀ Better than 35dB Main Driver Output to PLL Amp
Output Isolation
Contact MaximDirect sales at 888-629-4642 to check
on pricing and availability for these kits.
ꢀ 110mA Supply Current at +17dBm
ꢀ ESD Protection
Ordering Information
Component Suppliers
SUPPLIER
Johnson
Murata
PHONE
WEBSITE
FREQUENCY
TEMP
RANGE
RANGE
(MHz)
PART
IC PACKAGE
507-833-8822 www.johnsoncomponents.com
770-436-1300 www.murata.com
-40°C to
+85°C
MAX9989EVKIT
MAX9990EVKIT
20 Thin QFN-EP* 700 to 1100
20 Thin QFN-EP* 1500 to 2200
-40°C to
+85°C
Component List (MAX9989)
*EP = Exposed paddle.
DESIGNATION QTY
DESCRIPTION
47pF 5ꢀ, 50ꢁ C0ꢂ-tꢃpe ceramꢄc
capacꢄtors (0603)
Murata ꢂRM1885C1H470J
Component List (MAX9990)
C1, C2, C4, C6,
7
C8, C9, C10
DESIGNATION QTY
DESCRIPTION
0.1µF 10ꢀ, 16ꢁ ꢅ7R-tꢃpe ceramꢄc
capacꢄtors (0603)
Murata ꢂRM188R71C104K
22pF 5ꢀ, 50ꢁ C0ꢂ-tꢃpe ceramꢄc
capacꢄtors (0603)
Murata ꢂRM1885C1H220J
C1, C2, C4, C5,
C6, C8, C9, C10
C3, C7, C11
C5
3
1
3
8
3
3
5pF 0.25pF, 50ꢁ C0ꢂ-tꢃpe ceramꢄc
capacꢄtor (0603)
Murata ꢂRM1885C1H5R0C
0.1µF 10ꢀ, 16ꢁ ꢅ7R-tꢃpe ceramꢄc
capacꢄtors (0603)
Murata ꢂRM188R71C104K
C3, C7, C11
J1, J2, J3
PC board edge-mount SMA RF
connectors (flat-tab launch)
Johnson 142-0741-856
PC board edge-mount SMA RF
connectors (flat-tab launch)
Johnson 142-0741-856
J1, J2, J3
R1
1
4
100Ω 5ꢀ resꢄstor (0603)
R1
1
4
100Ω 5ꢀ resꢄstor (0603)
R2–R5
Not ꢄnstalled
R2–R5
Not ꢄnstalled
Large test poꢄnt for 0.062ꢄn PC board
(red)
Large test poꢄnt for 0.062ꢄn PC board
(red)
TP1
1
TP1
1
Mouser 151-107 or equꢄvalent
Mouser 151-107 or equꢄvalent
Large test poꢄnt for 0.062ꢄn PC board
(black)
Mouser 151-103 or equꢄvalent
Large test poꢄnt for 0.062ꢄn PC board
(black)
Mouser 151-103 or equꢄvalent
TP2
U1
1
1
TP2
U1
1
1
MAꢅ9989ETP-T
MAꢅ9990ETP-T
________________________________________________________________ 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.
MAX9989/MAX9990 Evaluation Kits
Testing the Buffer
Quick Start
The MAꢅ9987/MAꢅ9988 Eꢁ kꢄts are fullꢃ assembled and
factorꢃ tested. Follow the ꢄnstructꢄons ꢄn the Connections
and Setup sectꢄon for proper devꢄce evaluatꢄon.
1) From the procedure above, the power meter should
be readꢄng a power of about +17dBm. Keep ꢄn mꢄnd
that because of a 2nd harmonꢄc component ꢄn the
output, these measured results are slꢄghtlꢃ hꢄgher
than the true on-frequencꢃ RF power.
Test Equipment Required
Table 1 lꢄsts the equꢄpment requꢄred to verꢄfꢃ the opera-
tꢄon of the MAꢅ9989/MAꢅ9990 Eꢁ kꢄts. It ꢄs ꢄntended as
a guꢄde onlꢃ, and some substꢄtutꢄons are possꢄble.
2) Ensure that the supplꢃ current ꢄs not more than
122mA at ꢁ
= 5.25ꢁ and P = +10dBm.
IN
CC
3) Leavꢄng the 20dB power pad connected to OUTLO,
move the power detector to OUTPLL (removꢄng the
50Ω termꢄnatꢄon) and verꢄfꢃ an output level of about
+3dBm. Be sure to turn off the 20dB offset.
Connections and Setup
Thꢄs sectꢄon provꢄdes a step-bꢃ-step guꢄde to testꢄng
the basꢄc functꢄonalꢄtꢃ of the Eꢁ kꢄts. As a general pre-
cautꢄon to prevent damagꢄng the outputs bꢃ drꢄvꢄng
hꢄgh-ꢁSWR loads, do not turn on DC power or the RF
sꢄgnal generator untꢄl all connectꢄons are made:
4) After testꢄng, dꢄsable the RF generator, dꢄsconnect
the supplꢃ, then dꢄsconnect the RF cables.
Layout Considerations
A properlꢃ desꢄgned PC board ꢄs an essentꢄal part of
anꢃ RF/mꢄcrowave cꢄrcuꢄt. Keep RF sꢄgnal lꢄnes as short
as possꢄble to reduce losses, radꢄatꢄon, and ꢄnduc-
tance. For best performance, route the ground pꢄn
traces dꢄrectlꢃ to the exposed paddle underneath the
package. Thꢄs paddle should be connected to the
ground plane of the board bꢃ usꢄng multꢄple vꢄas under
the devꢄce to provꢄde the best RF/thermal conductꢄon
path. Solder the exposed paddle, on the bottom of the
devꢄce package, to a PC board exposed pad.
1) Calꢄbrate the power meter at 900MHz for the
MAꢅ9989, or at 1800MHz for the MAꢅ9990. Be sure
to use a power sensor rated to at least 20dBm.
Measure the loss of the 20dB attenuator (pad) that ꢄs
connected to OUTLO; account for thꢄs loss as an off-
set ꢄn the power meter.
2) Connect a 20dB pad to the LO drꢄver output
(OUTLO). The 20dB pad maꢄntaꢄns a reasonable
load ꢁSWR for the output drꢄvers and protects the
RF equꢄpment from accꢄdental overload.
3) Connect a 50Ω termꢄnatꢄon to OUTPLL.
4) For the MAꢅ9989, set the RF sꢄgnal generator for
900MHz CW (ꢄ.e., unmodulated) at +10dBm
(accounts for 3dB loss of ꢄnput pad); for the
MAꢅ9990, set the generator for 1800MHz at
+12dBm. Connect the generator to the Eꢁ kꢄt ꢄnput
through a 3dB pad. Dꢄsable the RF output untꢄl all
connectꢄons are made.
Table 1. List of Required Equipment
EQUIPMENT
HP E3631A
QTY
DESCRIPTION
DC power supplꢃ
1
1
1
1
1
1
1
1
Fluke 75 serꢄes II
HP/Agꢄlent 8648B
HP 437B
Dꢄgꢄtal multꢄmeter
RF sꢄgnal generator
RF power meter
5) Connect the power sensor to OUTLO’s 20dB pad.
HP 8482A
Hꢄgh-power sensor (power head)
20dB (1W) attenuator
3dB attenuator
6) Set the DC supplꢃ to +5.0ꢁ (set the current lꢄmꢄt to
around 250mA, ꢄf possꢄble). Dꢄsable the output volt-
age and connect the supplꢃ to the Eꢁ kꢄt through the
ammeter.
20dB pad
3dB pad
50Ω termꢄnatꢄon
50Ω (1W) termꢄnatꢄon
7) Enable the supplꢃ.
8) Enable the RF sꢄgnal generator’s output.
2
_______________________________________________________________________________________
MAX9989/MAX9990 Evaluation Kits
POWER SUPPLY
3-OUT, HPIB
(AG E3631A)
BENCH
MULTIMETER HPIB
(HP 34401A)
(AMMETER)
+
-
+ -
50Ω
OUTPLL
+5V
GND
MAX9989/MAX9990
EV KIT
RF SIGNAL GENERATOR
(HP 8648B)
RF HIGH-
POWER SENSOR
IN
OUTLO
20dB
(1W)
3dB
RF POWER METER
(GIGA 80701A,
HP 437B)
Figure 1. Test Setup Diagram
_______________________________________________________________________________________
3
MAX9989/MAX9990 Evaluation Kits
5.0V
5.0V
5.0V
TP1**
+5V
C7
C11
C10
C8
TP2
GND
R1
100Ω
C9
C1
SMA
OUTPLL
20
19
18
17
16
GND
IN
GND
1
15
MAX9989
MAX9990
SMA
IN
GND
GND
2
3
4
5
14
13
12
11
VCCREF
5.0V
C3
C2
VCC2
VCC2
GND
REF
5.0V
BIAS
C5
C6
6
7
8
9
10
C4
SMA
OUTLO
R4*
R5*
R3*
R2*
*THESE RESISTORS ARE LEFT UNINSTALLED FROM FACTORY.
REFER TO TABLE 1 IN THE MAX9989/MAX9990 DATA SHEET
FOR INFORMATION ON SELECTING OPTIONAL VALUES TO SET OUTPUT POWER.
**SINCE +5V MUST BE APPLIED AT THE SAME TIME FOR ALL V PINS,
CC
ALL V PINS ARE ROUTED TO ONE COMMON PORT.
CC
Figure 2. MAX9989/MAX9990 EV Kit Schematic
4
_______________________________________________________________________________________
MAX9989/MAX9990 Evaluation Kits
1.0"
1.0"
Figure 3b. MAX9990 EV Kit Component Placement Guide—
Top Silkscreen
Figure 3a. MAX9989 EV Kit Component Placement Guide—
Top Silkscreen
1.0"
1.0"
Figure 4. MAX9989/MAX9990 EV Kit PC Board Layout—Top
Soldermask
Figure 5. MAX9989/MAX9990 EV Kit PC Board Layout—Top
Layer Metal
_______________________________________________________________________________________
5
MAX9989/MAX9990 Evaluation Kits
1.0"
1.0"
Figure 7. MAX9989/MAX9990 EV Kit PC Board Layout—Inner
Layer 3 (Routes)
Figure 6. MAX9989/MAX9990 EV Kit PC Board Layout—Inner
Layer 2 (GND)
1.0"
1.0"
Figure 9. MAX9989/MAX9990 EV Kit PC Board Layout—Bottom
Soldermask
Figure 8. MAX9989/MAX9990 EV Kit PC Board Layout—Bottom
Layer Metal
6
_______________________________________________________________________________________
MAX9989/MAX9990 Evaluation Kit
1.0"
Figure 10. MAX9989/MAX9990 EV Kit PC Board Layout—
Bottom Silkscreen
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 Maxꢄm Integrated Products
Prꢄnted USA
ꢄs a regꢄstered trademark of Maxꢄm Integrated Products.
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