DC1662A - Demo Manual

LTC5585 Demo Board (DC1662A) Quick Start Guide
Quick Start Procedures:
1.
2.
3.
4.
5.
6.
7.
Connect test equipments as shown in Figure 1 with all signal sources and DC supplies off.
Turn on the 5V DC power supply.
Connect EN to VCC_SENSE.
Monitor the DC volt meter, and adjust the DC supply voltage until VCC_SENSE is 5V.
Verify ICC is approximately 190mA.
Turn on the RF and the LO signal generators.
Adjust the spectrum analyzer settings. Be sure to use enough input attenuation to avoid overdriving the spectrum analyzer.
8. Take measurement.
Using the IIP2 and DC Offset adjustment features:
Method 1 (On-board trim pots):
1. Install jumpers to all 6 positions of jumper block JP1
2. Apply 1V DC to VCTRL.
3. Connect EIP2 and EDC to VCC_SENSE.
4. Adjust REF trim pot until the voltage on the REF test point reaches 0.5V.
5. Adjust IIP2 and DC Offset using the on-board trim pots.
Method 2 (External voltage sources):
1. Remove jumpers from all 6 positions of jumper block JP1.
2. Connect EIP2 and EDC to VCC_SENSE.
3. Using 5 separate DC power supplies, apply 0.5V to each of the demo board REF, IP2I, IP2Q,
DCOI, and DCOQ test points.
4. Vary the voltages on IP2I, IP2Q, DCO1, and DCOQ to adjust IIP2 and DC Offset.
Preliminary
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1
Spectrum
Analyzer
FSEM30
Combiner
Mini-Circuits
ZFSCJ-2-1
DC Block
Combiner
Mini-Circuits
ZFSCJ-2-1
DC Block
DC Block
50-ohm
Termination
DC Block
3dB
PAD
Signal
Generator
SMJ100A
1V DC Power
Supply
(20mA Minimum)
DC Volt
Meter
5V DC Power
Supply
(250mA Minimum)
Signal
Generator
SME06
3dB
PAD
Mini-Circuits
ZRL-3500
6dB
PAD
Combiner
MCLI
PS2-173
Signal
Generator
SME06
3dB
PAD
Mini-Circuits
ZRL-3500
6dB
PAD
6dB
PAD
Figure 1. Measurement Setup
Preliminary
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Figure2. Demo Board Schematic
Preliminary
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Item Qty Reference
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
0
0
7
2
3
1
2
4
10
3
6
1
6
8
1
1
5
4
1
1
1
Part Description
C1-C8,C14,C17,C23-C28,R5-R8,R16
C9
C10,C11,C31-C35
C13,C19
C15,C36,C37
C16
C12,C18
C21,C22,C29,C30
E1-E6,E8-E10,E13
E7,E11,E12
J1-J6
JP1
XJP1 (6 LOCATION FOR JP1)
L1-L4,R1-R4
L5
L6
PT1-PT5
R9,R11,R13,R14
R15
T1
U1
Preliminary
OPT, 0402
OPT, 0603
CAP., X7R, 0.1uF, 10%, 16V, 0402
IND., MULTILAYER, 5.1nH, +/-0.3nH, 0402
CAP., C0G, 1000pF, 5%, 50V, 0402
CAP., X7R, 4.7uF, 10%, 16V, 0805
RES., CHIP, 0 Ohm, 0402
CAP., X5R, 1uF, 10%, 10V, 0402
TESTPOINT, TURRET, .063"
TESTPOINT, TURRET, .094"
CONN., SMA, 50-OHM, EDGE-LANCH
HEADER, 6 X 2 PIN, 2MM
SHUNT
RES., CHIP, 0 Ohm, 0805
CAP., C0G, 1.0pF, +/-0.05pF, 0402
CAP., C0G, 1.2pF, +/-0.05pF, 0402
POT., 4mm SMD, 500 Ohm
RES., CHIP, 100 Ohm, 1%, 1/16W, 0402
RES., CHIP, 1 Ohm, 1%, 1/8W, 0805
TRANSFORMER, RF BALUN
IC, LT5585IUF#PBF, QFN 4mm X 4mm
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Manufacturer / Part #
MURATA, GRM155R71C104KA88D
MURATA, LQG15HS5N1S02D
MURATA, GRM1555C1H102JA01D
MURATA, GRM21BR71C475KA73L
VISHAY, CRCW04020000Z0
MURATA, GRM155R61A105KE15D
MILL-MAX, 2308-2-00-80-00-00-07-0
MILL-MAX, 2501-2-00-80-00-00-07-0
E.F.JOHNSON, 142-0701-851
SAMTEC, TMM-106-02-L-D
SAMTEC, 2SN-BK-G
VISHAY, CRCW08050000Z0
MURATA, GJM1555C1H1R0WB01D
MURATA, GJM1555C1H1R2WB01D
BOURNS, 3214X-1-501-E
VISHAY, CRCW0402100RFKED
VISHAY, CRCW08051R00FNEA
ANAREN, BD0826J50200A00
LINEAR TECH., LT5585IUF#PBF
4
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