DC2085A - Demo Manual

DEMO MANUAL DC2085
LTC2000, LTC2000A
16-, 14-, 11-Bit, 2.5Gsps to 2.7Gsps DACs
Description
Demonstration circuit 2085 supports the LTC®2000 and
LTC2000A, a high speed, high dynamic range family of
DACs. It was specially designed for applications that require differential DC coupled outputs. DC2085 supports
the complete family of the LTC2000 including 16, 14 and
11 bit parts. For all the variations see Table 1.
The circuitry on the analog outputs is optimized for analog
frequencies from DC-1.08GHz.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2085
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Table 1. DC2085 Variants
DC2085 VARIANTS
PART NUMBER
RESOLUTION
MAXIMUM SAMPLE RATE
OUTPUT FREQUENCY
DC2085A-A
LTC2000-16
16-Bit
2.5Gsps
DC-1000MHz
DC2085A-B
LTC2000-14
14-Bit
2.5Gsps
DC-1000MHz
DC2085A-C
LTC2000-11
11-Bit
2.5Gsps
DC-1000MHz
DC2085A-D
LTC2000A-16
16-Bit
2.7Gsps
DC-1080MHz
DC2085A-E
LTC2000A-14
14-Bit
2.7Gsps
DC-1080MHz
DC2085A-F
LTC2000A-11
11-Bit
2.7Gsps
DC-1080MHz
Performance Summary
Specifications are at TA = 25°C
PARAMETER
CONDITIONS
MIN
TYP
MAX
Supply Voltage – DC2085
This supply must provide up to 800mA
4.8
5.0
5.2
Sampling Frequency (Sample Clock Frequency)
UNITS
V
300
2500 or 2700
MHz
0
15
dBm
Differential Input Voltage Range
±0.2
±0.6
V
Common Mode Voltage Range
0.4
1.8
V
Sample Clock Level (Single-Ended)
Use a 50Ω Source
LVDS Inputs
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1
DEMO MANUAL DC2085
Quick Start Procedure
DC2085 is easy to set up to evaluate the performance of the
LTC2000. Refer to Figure 1 for proper measurement equipment set-up and follow the procedure below:
Setup
The Altera Stratix IV GX FPGA Development Kit was
supplied with the DC2085 demonstration circuit. Follow
the Altera Stratix IV demo manual to install the required
software and for connecting the Altera Stratix IV to the
DC2085 and to a PC.
5V
+
SINGLE-ENDED
SAMPLE CLOCK INPUT
DIFFERENTIAL OUTPUTS
NOMINAL OUTPUTS LOOK LIKE 50Ω
PER SIDE TO DRIVE AN EXTERNAL
BALUN, OR COMBINER
JUMPERS SHOWN IN THEIR DEFAULT POSITIONS
THE DC2085 CONNECTS TO THE ALTERA STRATIX IV
EVALUATION BOARD VIA HSMC CONNECTORS
CONNECT USB TO PC
RUNNING LTDACGen SOFTWARE
Figure 1. DC2085 Setup (zoom for details)
2
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DEMO MANUAL DC2085
Quick Start Procedure
Hardware Setup
SMAs
J2 & J3: Differential Trigger Input. Apply a signal to J2
from a 50Ω driver. Absorptive filters are required for
data sheet performance. Use J2 and J3 if the trigger is a
differential signal.
J4: Sample Clock Input. Apply a clock signal to this
SMA connector from a 50Ω driver. A 0dBm clock source
should be sufficient, but for best phase noise and jitter
performance, use the highest possible amplitude and slew
rate, up to 15dBm.
J5 & J6:Differential Output Signals. These SMAs provide
access to the differential outputs of the DAC. The output
impedance is designed to be 50Ω at each SMA, or 100Ω
differential. Connect an external balun or combiner to
these pins to drive a single-ended spectrum analyzer.
Linear Technology has various coupon boards for specific
frequencies and applications. More information is available
at www.linear.com.
J8:SYNC. This SMA is to provide access to the sync pin
of the LT8614. It is not used in normal use.
Turrets
+5V:Positive Input Voltage for the DAC and Digital Circuits.
This voltage feeds a series of regulators that supply the proper
voltages for the DAC. The voltage range for this turret is 4.8V
to 5.2V. Note: For close-in phase noise plots, driving this
voltage is not ideal. There is a known 20kHz noise hump in
the spectrum that is generated by the regulators. For the best
phase noise performance, back drive the onboard regulators
with the provided turrets from a low noise supply.
GND: Ground Connection. This demo board has only a
single ground plane. This turret should be tied to the GND
terminal of the power supply being used.
SVDD3V0: Optional 3.0V Input. This pin is connected
directly to the SVDD pin of the DAC. It requires a supply
that can deliver up to 100mA. Driving this pin will shut
down the onboard regulator.
AVDD3V3: Optional 3.3V Input. This pin is connected
directly to the AVDD3V3 pin of the DAC. It requires a
supply that can deliver up to 200mA. Driving this pin will
shut down the onboard regulator.
DVDD3V3: Optional 3.3V Input. This pin is connected
directly to the DVDD3V3 pin of the DAC. It requires a
supply that can deliver up to 50mA. Driving this pin will
shut down the onboard regulator.
AVDD1V8: Optional 1.8V Input. This pin is connected
directly to the AVDD1V8 pin of the DAC. It requires a
supply that can deliver up to 1A. Driving this pin will shut
down the onboard regulator.
DVDD3V3: Optional 1.8V Input. This pin is connected
directly to the DVDD1V8 pin of the DAC. It requires a
supply that can deliver up to 500mA. Driving this pin will
shut down the onboard regulator.
VP1: This is a test point that is at the output of the onboard switching regulator. It is meant for test purposes.
It can also be driven to 2.5V to shut down the output of
the switching regulator.
TSTP & TSTN: These pins are tied directly to the TSTP
and TSTN pins of the DAC. They can be used to measure
the internal temperature and timing of the LVDS inputs.
FSADJ:This is an optional pin that is tied directly to the
FSADJ pin of the DAC. It can be used to set the full-scale
output current of the DAC. In normal operation this pin
is tied to GND through 500Ω to set a current of 40mA at
the output.
REFIO: This pin is tied directly to the REFIO pin of the
DAC and is used to set the reference voltage for the DAC.
Normally it is internally set to 1.25V but can be overdriven
with an external voltage from 1.1V to 1.4V.
Jumpers
The DC2085 demonstration circuit should have the following jumper settings as default positions.
JP1: PD. In the RUN position this pin results in normal
operation of the DAC. In the SHDN position the DAC is
powered down. (Default:RUN or up)
JP2:SPI and JTAG. This jumper selects how the FPGA is
programmed. In the SPI position the FPGA is programmed
from the onboard FTDI chip and the LTDACGen software. In
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3
DEMO MANUAL DC2085
quick Start Procedure
the JTAG position the J9 is used with a JTAG programmer
to program the FPGA. (Default:SPI or down)
Connectors
J1: DC590. This is an optional header that can be used
to program the DAC with the DC590. (Default:removed)
J9:JTAG. This is an optional header that can be used to
program the FPGA through a JTAG programmer. (Default:
removed)
J7:USB. Connect a USB cable from J7 to a computer with
the LTDACGen software installed.
J10 & J11: HSMC Connectors. These connectors are
designed to connect to the Altera Stratix IV development
board. All of the communication between the FPGA and
the DAC is routed through these connectors.
APPLYING POWER AND SIGNALS TO THE DC2085
DEMONSTRATION CIRCUIT
If a Stratix IV demo board is used to supply data to the
DC2085, the two boards should first be bolted together
and a proper connection should be made. If Linear Technology provided the Stratix IV board the proper bit file is
already installed in flash memory and will begin to operate
when the board is powered on. If an unprogrammed FPGA
board is used, refer to the appropriate documentation on
how to program it.
Power should be applied to the system in this order:
1. Connect the Altera board to the provided power supply.
2. Connect the USB cable to J7.
3. Apply a clock to J4.
4. Connect any optional output board to J5 and J6.
5. Turn on the voltage to the Altera board.
6. Connect the 5V from a bench supply to the +5V turret
on the DC2085.
7. Open the LTDACGen software and hit connect.
LTDACGen should report back that it is connected to the
FPGA. See Figure 2:
Figure 2. LTDACGen Connected to FPGA
4
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DEMO MANUAL DC2085
Quick Start Procedure
ANALOG OUTPUT NETWORK
The analog output network of the DC2085 has been
designed to maximize the performance of the LTC2000.
The LTC2000 drives two 50Ω resistors on each side to
minimize the impedance it sees. This maximizes the SFDR
the DAC is able to produce. If a larger signal swing is
required this impedance can be increased, but the SFDR
might degrade. The output also has a pi network of 50Ω
resistors to pad the output impedance of the board up to
50Ω per side. This allows the demo board to drive a 50Ω
analyzer through a balun or other combiner.
Linear Technology has various coupon boards for specific
frequencies and applications. More information is available
at www.linear.com.
SAMPLE CLOCK
The sample clock to the DC2085 demonstration circuit
board is marked J4. As a default it is a single-ended 50Ω
input port. There is an onboard balun that does a singleended to differential translation.
For the best noise performance, the sample input must
be driven with a very low jitter signal generator source.
The amplitude should be as large as possible up to ±1.8V
or 9dBm.
SOFTWARE
The software for the DC2085, LTDACGen is available at
www.linear.com free of charge. It simplifies the creation
of complex waveforms and loading them into the FPGA to
test the DC2085. For more information about how to use
the LTDACGen software, refer to the help files that come
with the software.
RESULTS
After everything is set up and the software is connected to the DAC demo system, a sine wave can be
added to the output waveform. The default frequency is
399.932861328MHz (Figure 3). By clicking Update FPGA,
the data is sent to the FPGA and is then used to program
the DAC. A spectrum analyzer can then be used to view
the results (Figure 4).
Figure 3. Default Frequency
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DEMO MANUAL DC2085
quick Start Procedure
Figure 4. DC2085 Results. Close-In (Top) and Wideband (Bottom)
6
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DEMO MANUAL DC2085
Parts List
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
Required Circuit Components
1
13
C1, C25, C26, C29, C31, CAP., X7R, 0.1µF, 16V 10% 0402
C32, C33, C34, C35, C36,
C37, C71, C72
AVX, 0402YC104KAT2A
2
4
C2, C3, C8, C19
CAP., NPO, 0.01µF, 25V 5% 0603
TDK, C1608C0G1H103J
3
9
C4, C6, C9, C11, C14,
C18, C67, C68, C69
CAP., X7R, 1µF, 16V 10% 0603
AVX, 0603YC105KAT2A
4
5
C5, C7, C10, C12, C15
CAP., TANT., 47µF, 16V 10% 7343
AVX, TAJD476K016RNJ
5
4
C13, C16, C27, C28
CAP., X5R, 4.7µF, 16V 20% 1206
TDK, C3216X5R1C475M
6
2
C17, C40
CAP., X5R, 10µF, 10V 20% 0603
AVX, 0603ZD106MA2T
7
1
C20
CAP., C0G, 4.7pF, 50V ± 0.25pF 0603
AVX, 06035A4R7CAT2A
8
2
C21, C24
CAP., X7R, 0.1µF, 16V 10% 0603
TDK, C1608X7R1C104K
9
1
C22
CAP., X7R, 1µF, 25V 10% 0603
TDK, C1608X7R1E105K
10
2
C23, C70
CAP., X7R, 47µF, 10V 10% 1210
MURATA, GRM32ER71A476KE15L
11
1
C30
CAP., X5R, 3.3µF, 16V 10% 0603
TDK, C1608X5R1C335K
12
2
C38, C39
CAP., COG, 27pF, 50V 5% 0402
TDK, C1005C0G1H270J
13
2
C41, C42
CAP., COG, 100pF, 25V 5% 0201
TDK, C0603C0G1E101J
14
1
C43
CAP., X5R, 0.01µF, 16V 10% 0402
MURATA, GRM155R61C103KA01D
15
1
C44
CAP., X7R, 47nF, 25V 10% 0402
MURATA, GRM155R71E473KA88D
16
9
C45, C48, C49, C53, C54, CAP., X5R, 100µF, 6.3V 20% 1206
C58, C61, C62, C64
TDK, C3216X5R0J107M
17
10
C46, C50, C51, C52, C55, CAP., X7S, 2.2µF, 4V 20% 0306
C56, C57, C59, C60, C63
MURATA, LLL185C70G225ME01L
18
1
C47
CAP., COG, 10pF, 25V 5% 0201
MURATA, GRM0335C1E100JA01D
19
0
C65
CAP., OPT, 0402
OPTION
20
1
C66
CAP., NP0, 1pF, 25V ±.25pF 0402
AVX, 04023A1R0CAT2A
21
2
C73, C74
CAP., X7R, 4.7µF, 50V 10% 1206
MURATA, GRM31CR71H475KA12L
22
1
C75
CAP., X7R, 10µF, 50V 10% 1210
MURATA, GRM32ER71H106KA12L
23
2
C76, C77
CAP., X5R, 1µF, 50V 10% 0603
MURATA, GRM188R61H105KAALD
24
1
D1
DIODE, TVS, 70V,SMA
DIODES INC./ ZETEX, SMAT70A-13-F
25
1
D2
DIODE, TVS, 24V,SMA
DIODES INC./ ZETEX, SMAJ24A-13-F
26
1
D3
LED, RED, WATERCLEAR, 0805
WÜRTH, 150080RS75000
27
10
E1, E2, E3, E5–E11
TEST POINT, TURRET, .061, PBF
MILL-MAX, 2308-2-00-80-00-00-07-0
28
2
E4, E12
TEST POINT, TURRET, .094, PBF
MILL-MAX, 2501-2-00-80-00-00-07-0
29
2
JP1, JP2
HEADER, 3 PIN, .079
SULLINS, NRPN031PAEN-RC
30
1
J1
HEADER, 2×7 DUAL ROW
MOLEX 87831-1420
31
3
J2, J3, J8
CON., SMA JACK, STRAIGHT, THRU-HOLE
AMPHENOL CONNEX, 132134
32
1
J4
CON., SMA PCB TOP MOUNT
AEP, 9650-1113-005
33
2
J5, J6
CON., SMA 50Ω EDGE-LAUNCH
EMERSON, 142-0701-851
34
1
J7
CONNECTOR, USB TYPE B, RIGHT ANGLE PCB
MOUNT
FCI, 61729-0010BLF
35
1
J9
HEADER, 2X5, 0.100
SAMTEC, TSW-105-07-L-D
36
2
J10, J11
CONNECTOR, HSMC
SAMTEC, ASP-122952-01
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DEMO MANUAL DC2085
Parts List
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
37
6
L1, L2, L3, L4, L6, L7
FERRITE BEAD, 33Ω AT 100mHz, 1206
MURATA, BLM31PG330SN1L
38
1
L5
INDUCTOR, 2.2µH, 20% HIGH CURRENT, SMT
VISHAY, IHLP2020BZER2R2M11
39
1
L8
INDUCTOR, CERAMIC CHIP, 1nH, 5%, 0402
COILCRAFT, 0402CS-1N0XJLU
40
1
L9
FERRITE BEAD, 30Ω AT 100mHz, 0805
TDK, MPZ2012S300A
41
1
L10
INDUCTOR, 6.8µH, 20% HIGH CURRENT, SMT
VISHAY, IHLP2020BZER6R8M11
42
2
MTG5, MTG6
STANDOFF, NYLON 0.5"
KEYSTONE, 8833 (SNAP ON)
43
2
Q1, Q2
TRANSISTOR, N-CH. POWER MOSFET, SOIC 8L
FAIRCHILD, FDS8870
44
6
R1, R2, R3, R13, R17,
R30
RES., CHIP, 1k, 1/16W, 5% 0402
VISHAY, CRCW04021K00JNED
45
1
R4
RES., CHIP, 4.7k, 1/16W, 5% 0402
YAGEO, RC0402JR-074K7L
46
4
R5, R14–R16
RES., CHIP, 10k, 1/16W, 5% 0402
YAGEO, RC0402JR-0710KL
47
2
R6, R8
RES., CHIP, 2k, 1/16W, 5% 0402
VISHAY, CRCW04022K00JNED
48
0
R7, R10, R23, R24, R25, RES., CHIP, OPT, 0402
R27, R28, R36, R37,
R38, R39, R43, R62, R63
OPTION
49
1
R9
RES., CHIP, 39Ω, 1/16W, 1% 0402
VISHAY, CRCW040239R0FKED
50
1
R11
RES., CHIP, 0Ω JUMPER, 1/16W, 0402
VISHAY, CRCW04020000Z0ED
51
1
R12
RES., CHIP, 12k, 1/16W, 5% 0402
VISHAY, CRCW040212K0JNED
52
1
R18
RES., CHIP, 2.2k, 1/16W, 5% 0402
VISHAY, CRCW04022K20JNED
53
2
R19, R20
RES., CHIP, 3.24k, 1/16W, 1% 0402
VISHAY, CRCW04023K24FKED
54
1
R21
RES., CHIP, 1k, 1/16W, 1% 0402
YAGEO, RC0402FR-071KL
55
1
R22
RES., CHIP, 7.15k, 1/16W, 1% 0402
VISHAY, CRCW04027K15FKED
56
2
R26, R29
RES., CHIP, 49.9Ω, 1/6W, 1% 0201
VISHAY, CRCW020149R9FNED
57
7
R31-R35, R41, R42
RES., CHIP, 10Ω, 1/16W, 1% 0402
VISHAY, CRCW040210R0FKED
58
10
R40, R44, R46, R47,
R48, R57, R58, R59,
R60, R61
RES., CHIP, 50Ω, HIGH FREQ., 1/20W, 0.1% 0402
VISHAY, FC0402E50R0BST1
59
1
R45
RES., CHIP, 499Ω, 1/16W, 1% 0402
VISHAY, CRCW0402499RFKED
60
1
R49
RES., CHIP, 41.2k, 1/10W, 1% 0603
VISHAY, CRCW060341K2FKEA
61
1
R50
RES., CHIP, 309k, 1/10W, 1% 0603
VISHAY, CRCW0603309KFKEA
62
1
R51
RES., CHIP, 243k, 1/10W, 1% 0603
VISHAY, CRCW0603243KFKEA
63
1
R52
RES., CHIP, 50Ω, 1/8W, 5% 0603
VISHAY, FC0603E50R0JST1
64
1
R53
RES., CHIP, 560Ω, 1/10W, 5% 0603
VISHAY, CRCW0603560RJNEA
65
1
R54
RES., CHIP, 10k, 1/10W, 1% 0603
VISHAY, CRCW060310K0FKEA
66
2
R55, R56
RES., CHIP, 20Ω, 1/16W, 1% 0402
VISHAY, CRCW040220R0FKED
67
1
T1
TRANSFORMER, BALUN
ANAREN, B0430J50100AHF
68
1
U2
IC, USB TO MULTIPURPOSE UART/FIFO, TQFP
FTDI, FT2232HL
69
1
U3
IC, QUAD MUX/DEMUX, TSSOP-16
FAIRCHILD, FST3257MTCX
70
1
U4
IC, EEPROM 1kBIT 3MHZ, 8TSSOP
MICROCHIP, 93LC46C-I/ST
71
1
U5
IC, MICROPOWER REGULATOR, SO-8
LINEAR TECHNOLOGY, LT1763CS8-3#PBF
72
2
U6, U7
IC, MICROPOWER REGULATOR, SO-8
LINEAR TECHNOLOGY, LT1763CS8-3.3#PBF
73
1
U8
IC, BUCK REGULATOR, QFN
LINEAR TECHNOLOGY, LT8614IUDC#PBF
74
1
U9
IC, VOLTAGE REFERENCE, MSOP
LINEAR TECHNOLOGY, LTC6655CHMS8-2.048#PBF
8
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DEMO MANUAL DC2085
Parts List
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
75
2
U10, U11
I.C., LOW DROPOUT REGULATOR, 3×3mm, DFN
LINEAR TECHNOLOGY, LT3080EDD#PBF
76
1
U12
I.C., 80V IDEAL DIODE, DFN-6L
LINEAR TECHNOLOGY, LTC4359HDCB-#TRPBF
77
2
XJP1, XJP2
SHUNT, 2mm
SAMTEC, 2SN-BK-G
78
1
Y1
CRYSTAL, 12.0 MHz, SMT
ABRACON, ABMM2-12.000MHZ-E2-T
GENERAL BOM
DC2085A
IC, 16-BIT 2.5Gsps DAC
LINEAR TECHNOLOGY, LTC2000IY-16
GENERAL BOM
DC2085A
IC, 14-BIT 2.5Gsps DAC
LINEAR TECHNOLOGY, LTC2000IY-14
GENERAL BOM
DC2085A
IC, 11-BIT 2.5Gsps DAC
LINEAR TECHNOLOGY, LTC2000IY-11
GENERAL BOM
DC2085A
IC, 16-BIT 2.7Gsps DAC
LINEAR TECHNOLOGY, LTC2000AIY-16
GENERAL BOM
DC2085A
IC, 14-BIT 2.7Gsps DAC
LINEAR TECHNOLOGY, LTC2000AIY-14
GENERAL BOM
DC2085A
IC, 11-BIT 2.7Gsps DAC
LINEAR TECHNOLOGY, LTC2000AIY-11
DC2085A-A Required Circuit Components
1
1
2
1
U1
DC2085A-B Required Circuit Components
1
1
2
1
U1
DC2085A-C Required Circuit Components
1
1
2
1
U1
DC2085A-D Required Circuit Components
1
1
2
1
U1
DC2085A-E Required Circuit Components
1
1
2
1
U1
DC2085A-F Required Circuit Components
1
1
2
1
U1
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9
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
A
B
C
D
GND
GND
GND
GPIO
EEVCC
EESDA
EESCL
EEGND
1
1
CK
J4
1
TRIG P
J3
TRIG N
J2
DCKIN
DCKIP
(FROM PAGE 4)
DC590
J1
VCCIO
CS
SCK/SCL
MOSI/SDA
MISO
3
8
13
14
10
9
11
12
6
4
7
5
2
J10
J9
SVDD3V0
DCKIP
DCKIN
5
DIGITAL INPUTS [DA0..DA15] AND [DB0..DB15] FROM PAGE 4
DAP1
L8 1nH
C66
1pF
NP0
1
TRIGGER_P
TRIGGER_N
2
C65
OPT
0402
(T0 PAGE 4)
C47
10pF
0201
COG
DAP9
1
DAP10
VUNREG
DAP0
DAN0
S7
S8
DAN0
DAP0
DBN0
DBP0
S9
S10
DAP2
DAN1
DAP1
R9
R10
DBN1
DBP1
DBN0
DBP0
DAN1
DAP3
DBN1
DBP1
DBP2
DBN2
Q9
Q10
DAN2
DAP2
R7
R8
DAN2
DAP4
DBN2
DBP2
DBP3
DBN3
P9
P10
DAN3
DAP3
Q7
Q8
DAN3
DAP5
DBN3
DBP3
DBP4
DBN4
N9
N10
DAN4
DAP4
P7
P8
DAN4
DAP6
DBN4
DBP4
DBP5
DBN5
M9
M10
DAN5
DAP5
N7
N8
DAN5
DAP7
DBN5
DBP5
DBP6
DBN6
L9
L10
DAN6
DAP6
M7
M8
DAN6
DAP8
DBN6
DBP6
L7
L8
DAN7
DAN7
DAP7
DBP7
DBN7
K9
K10
DBN7
DBP7
K7
K8
DAN8
H7
H8
DAN8
DAP8
DBN8
DBP8
H9
H10
DBN8
DBP8
DAN9
G7
G8
U1*
DAN9
DAP9
T1
3
GND
IN
GND
E11
4
5
6
4
C42
100pF
0201
COG
0.01uF
0402
X5R
C43
C41
100pF
0201
COG
TSTP TSTN
E10
ANAREN XINGER
2
1
DBN9
DBP9
G9
G10
DAP11
DAN10
DAP10
F9
F10
DBN10
DBP10
DBN9
DBP9
DAN10
DAP12
DBN10
DBP10
F7
F8
DAN11
DAN11
DAP11
DBP11
DBN11
E9
E10
DBN11
DBP11
E7
E8
DAN12
DAP13
DAN13
DAN12
DAP12
DBN12
DBP12
DBN13
DBP13
D9
D10
DBN12
DBP12
D7
D8
DAP14
DAN13
DAP13
C9
C10
DBN13
DBP13
C7
C8
DAN14
DAP15
DAN15
DAN14
DAP14
B7
B8
DAN15
DAP15
A9
A10
DBN14
DBP14
A7
A8
4
R26
49.9
0201
1%
R29
49.9
0201
1%
R4
R3
DBN15
DBP15
B9
B10
DBN14
DBP14
DBN15
DBP15
S1
S2
S5
S4
S3
SVDD3V0
PD
CS
SCK
SDI
SD0
TSTP
TSTN
S6
SVDD
CKP
CKN
10
DCKOP
DCKON
IOUTN
IOUTP
FSADJ
REFIO
R45 499
E8
J8
J7
J1
H1
M2
M1
FSADJ
E9
3
2
1
RUN
DCKON
DCKOP
R48
50
0402
R47
50
0402
3
(T0 PAGE 4)
R24
OPT
0402
R23
OPT
0402
PD_ALT
SHDN
(TO PAGE 4)
C40
10uF
R42
R41
REFIO
10
10
PD
SVDD3V0 JP1
3
R25
OPT
0402
R43
OPT
0402
R28
OPT
0402
R60
50
0402
R58
50
0402
R57
50
0402
R27
OPT
0402
R59
50
0402
R44
50
0402
R62
OPT
0402
LTC2000AIY-11
2
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
CUSTOMER NOTICE
LTC2000AIY-14
APPROVALS
SCALE = NONE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
PCB DES. M. HAWKINS
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG. C. MAYOTT
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
LTC2000AIY-16
-F
LTC2000IY-11
-E
LTC2000IY-14
-D
-C
-A
-B
U1
LTC2000IY-16
ASSY
*ASSEMBLY TABLE
2. REFER TO PAGE 4 FOR LTC2000 POWER CONNECTIONS.
1. ALL RESISTORS ARE SIZE 0402, U.O.N.
NOTES:
R46
50
0402
R40
50
0402
R61
50
0402
R63
OPT
0402
2
Figure 5. DC2085 Demo Circuit Schematic (Sheet 1)
A3
A2
5
DATE:
N/A
SIZE
10
1
10
1
1
IOUTNB
IOUTPB
TO PAGE 4
01/30/2014
1
SHEET
DEMO CIRCUIT 2085A
1
3
OF 4
REV.
LTC Confidential-For Customer Use Only
LTC2000 HIGH SPEED DAC
IC NO. LTC2000-X FAMILY
DATE
C. MAYOTT 01/30/2014
APPROVED
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
J5
J6
PD_ALT
SDO_ALT
SDO_FTDI
SDI_ALT
SDI_FTDI
SCK_ALT
SCK_FTDI
CS_ALT
CS_FTDI
PRODUCTION
DESCRIPTION
REVISION HISTORY
TECHNOLOGY Fax: (408)434-0507
R31
R37 OPT
R33 10
R36 OPT
R32 10
R38 OPT
R34
R39 OPT
R35 10
3
REV
TITLE: SCHEMATIC
-
ECO
A
B
C
D
DEMO MANUAL DC2085
Schematic Diagram
dc2085afa
A
B
C
R18
2.2K
RESET#
CS
CLK
DATA
1
2
3
4
5
6
R14
10K
SVDD3V0
USB
J7
5
VBUS
4
3
2
1
DO
DI
CLK
CS
VSS
ORG
NC
VCC
C39
27pF
NPO
R15
10K
5
6
7
8
1
R12 12K
C30
3.3uF
3
4
4
C38
27pF
NPO
R13 1K
C29
0.1uF
SVDD3V0
C26
0.1uF
Y1 12.0 Mhz
FTDI_1V8
SVDD3V0
93LC46C-I/ST
U4
R16
10K
SVDD3V0
USBDUSBD+
L6
C25
0.1uF
FERRITE BEAD, 33 OHMS
2
D
L7
FERRITE BEAD, 33 OHMS
SVDD3V0
4
13
3
2
63
62
61
14
6
7
8
49
50
TEST
OSCO
OSCI
EECS
EECLK
EEDATA
RESET#
REF
DM
DP
VREGOUT
VREGIN
C28
4.7uF
C27
4.7uF
4
9
FTDI_1V8
FT2232HL
U2
RDN
SPI
JTAG
JP2
3
2
1
3
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
R3
1K
R5
10K
2
SCALE = NONE
APP ENG. C. MAYOTT
PCB DES. M. HAWKINS
TDI
TCK
TDO
TMS
BD4
1
3
5
7
9
J9
DATE:
N/A
SIZE
9
7
SVDD3V0
1
CS_IF 12
SDO_IF
SDI_IF
SCK_IF 4
S
4A
3A
2A
1A
CS_FTDI
15
SDO_FTDI
SDI_FTDI
SCK_FTDI
14
13 TMS
TDO
11
10 TDI
TCK
5
6
1
SHEET
DEMO CIRCUIT 2085A
2
LTC2000 HIGH SPEED DAC
IC NO. LTC2000-X FAMILY
01/30/2014
BD2
BD0
3
OF 4
REV.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
OE
4B1
4B2
3B1
3B2
2B1
2B2
U3
BD3
BD1
OEN_CTRL
FST3257MTCX
2
3
C1 0.1uF
1B1
1B2
1
C37
0.1uF
R11
0 OHMS
R10
OPT
C36
0.1uF
SVDD3V0
C35
0.1uF
TECHNOLOGY
2
4
6
8
10
JTAG
TITLE: SCHEMATIC
BD5
R4
4.7K
VBUS
BD6
C34
0.1uF
SVDD3V0
RXEN
R7 OPT
SIWUA_CTRL
APPROVALS
R17
1K
R6
2K
R8
2K
C33
0.1uF
2
SVDD3V0
C32
0.1uF
SYSCLK
BC7
R2
1K
SVDD3V0
R1
1K
R9 39
FIFO_DATA_IN6
FIFO_DATA_IN4
FIFO_DATA_IN2
FIFO_DATA_IN0
PWRENN
BC6
BC4
BC2
BC0
BD7
SUSPEND#
BC5
BC3
BC1
AC7
WM
TXEN
FIFO_DATA_IN7
FIFO_DATA_IN5
FIFO_DATA_IN3
FIFO_DATA_IN1
CUSTOMER NOTICE
60
36
48
52
53
54
55
57
58
59
38
39
40
41
43
44
45
46
26
27
28
29
30
32
33
34
16
17
18
19
21
22
23
24
C31
0.1uF
FTDI_1V8
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
PWREN#
SUSPEND#
BCBUS0
BCBUS1
BCBUS2
BCBUS3
BCBUS4
BCBUS5
BCBUS6
BCBUS7
BDBUS0
BDBUS1
BDBUS2
BDBUS3
BDBUS4
BDBUS5
BDBUS6
BDBUS7
ACBUS0
ACBUS1
ACBUS2
ACBUS3
ACBUS4
ACBUS5
ACBUS6
ACBUS7
ADBUS0
ADBUS1
ADBUS2
ADBUS3
ADBUS4
ADBUS5
ADBUS6
ADBUS7
SVDD3V0
3
Figure 6. DC2085 Demo Circuit Schematic (Sheet 2)
VPHY
VPLL
AGND
10
12
37
64
VCORE
VCORE
VCORE
20
31
42
56
VCCIO
VCCIO
VCCIO
VCCIO
GND
GND
GND
GND
GND
GND
GND
GND
1
5
11
15
25
35
47
51
16
VCC
GND
8
5
A
B
C
D
DEMO MANUAL DC2085
Schematic Diagram
11
dc2085afa
A
B
C
E12
D2
SMAJ24A
D1
SMAT70A
SYNC
J8
+5V
E4
1
+5V
5
C70
47uF
1210
5
SHDN
3
2
1
R30
1K
0402
C9
1.0uF
C6
1.0uF
C4
1.0uF
5
6
7
8
R53
560
R52 50
FERRITE BEAD, 33 OHMS
L1
4
GND
1
2 2
1
4
IN
3
SOURCE
LTC4359HDCB
U12
C44
47nF
0402
25V
Q1
FDS8870
U7
BYP
SEN
OUT
4
C75
10uF
1210
L10
C73
4.7uF
1206
BST
GND2
GND2
2
1
R51
243K
R50
309K
C23
47uF
1210
PAD
VOUT
VOUT
VOUT
2
SCALE = NONE
APP ENG. C. MAYOTT
PCB DES. M. HAWKINS
APPROVALS
U9
DATE:
N/A
SIZE
R20
3.24K
R19
3.24K
4
3
2
1
GND
GND
VIN
SHDN
E6
R22
7.15K
R21
1K
C15
47uF
DVDD1V8
C12
47uF
C17
10uF
+
E5
AVDD1V8
1
C19
0.01uF
1
SHEET
DEMO CIRCUIT 2085A
3
LTC2000 HIGH SPEED DAC
3
OF 4
REV.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
C16
4.7uF
LTC2000-X FAMILY
01/30/2014
IC NO.
5
6
7
8
+
DVDD1V8
C13
4.7uF
AVDD1V8
TECHNOLOGY
GND
OUTS
OUTF
GND
LTC6655CHMS8-2.048
9
1
2
3
9
1
2
3
TITLE: SCHEMATIC
C18
1.0uF
L4
VCTRL
VIN
VIN
U10
LT3080EDD
PAD
VOUT
VOUT
VOUT
VP1
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
3
VCTRL
VIN
VIN
LT3080EDD
U11
FERRITE BEAD, 33 OHMS
SVDD3V0
5
8
7
5
8
7
2
E7
CUSTOMER NOTICE
2.2V
VP1
R54
10K
C72
0.1uF
R56 20
C14
1.0uF
FERRITE BEAD, 33 OHMS
C71
0.1uF
R55 20
C11
1.0uF
L3
+5V
+5V
Q2
FDS8870
4
L2
FERRITE BEAD, 33 OHMS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
C20
4.7pF
L5 2.2uH
C21
0.1uF
2
DVDD3V3
AVDD3V3
SVDD3V0
C77
1.0uF
C69
1.0uF
E3
C68
1.0uF
E2
C67
1.0uF
E1
3
Figure 7. DC2085 Demo Circuit Schematic (Sheet 3)
C74
4.7uF
1206
20
1
9
8
22
21
3
11
10
13
C10
47uF
VIN2
+
C7
47uF
C5
47uF
SYNC/MODE SW
SW
TR/SS
SW
SW
INTVCC
BIAS
RT
FB
PG
GND1
GND1
VIN1
6.8uH
1
15
2
16
17
19
6
7
4
LT8614
C8
0.01uF
U8
+
DVDD3V3
C3
0.01uF
AVDD3V3
+
SVDD3V0
C2
0.01uF
L9
4
2
1
4
2
1
4
2
1
FERRITE BEAD
R49 41.2K
C22 1.0uF
C24 0.1uF
C76
D3
RED 1.0uF
BYP
SEN
OUT
LT1763CS8-3.3
SHDN
IN
U6
BYP
SEN
OUT
LT1763CS8-3.3
SHDN
IN
4
LT1763CS8-3
SHDN
IN
POWER
FAULT
5
8
5
8
5
8
U5
GND
GND
GND
3
6
7
GND
GND
GND
3
6
7
GND
GND
GND
3
6
7
D
VSS
6
1
OUT
2
7
GATE
PAD
2
1
14
EN/UV
GND
18
5
6
7
8
3
2
1
SET
4
SET
12
4
5
A
B
C
D
DEMO MANUAL DC2085
Schematic Diagram
dc2085afa
A
B
C
D
162
164
38
40
34
36
30
32
26
28
22
24
18
20
14
16
10
12
6
8
2
4
162
164
38
40
34
36
30
32
26
28
22
24
18
20
14
16
10
12
6
8
2
4
J11A
ASP-122952-01
GND
GND
JTAG_TDO
CLKOUT0
SDA
JTAG_TCK
XCVR_TXP0
XCVR_TXN0
XCVR_TXP1
XCVR_TXN1
XCVR_TXP2
XCVR_TXN2
XCVR_TXP3
XCVR_TXN3
XCVR_TXP4
XCVR_TXN4
XCVR_TXP5
XCVR_TXN5
XCVR_TXP6
XCVR_TXN6
GND
GND
JTAG_TDI
CLKIN0
SCL
JTAG_TMS
5
XCVR_RXPO
XCVR_RXN0
XCVR_RXP1
XCVR_RXN1
XCVR_RXP2
XCVR_RXN2
XCVR_RXP3
XCVR_RXN3
XCVR_RXP4
XCVR_RXN4
XCVR_RXP5
XCVR_RXN5
XCVR_RXP6
XCVR_RXN6
GND
GND
JTAG_TDO
CLKOUT0
SDA
JTAG_TCK
XCVR_TXP0
XCVR_TXN0
XCVR_TXP1
XCVR_TXN1
XCVR_TXP2
XCVR_TXN2
XCVR_TXP3
XCVR_TXN3
XCVR_TXP4
XCVR_TXN4
XCVR_TXP5
XCVR_TXN5
XCVR_TXP6
XCVR_TXN6
BANK 1
XCVR_RXP7
XCVR_TXP7
XCVR_RXN7
XCVR_TXN7
GND
GND
JTAG_TDI
CLKIN0
SCL
JTAG_TMS
XCVR_RXPO
XCVR_RXN0
XCVR_RXP1
XCVR_RXN1
XCVR_RXP2
XCVR_RXN2
XCVR_RXP3
XCVR_RXN3
XCVR_RXP4
XCVR_RXN4
XCVR_RXP5
XCVR_RXN5
XCVR_RXP6
XCVR_RXN6
BANK 1
XCVR_RXP7
XCVR_TXP7
XCVR_RXN7
XCVR_TXN7
ASP-122952-01
J10A
GND
GND
GND
GND
GND
FIFO_DATA_IN1
FIFO_DATA_IN5
FIFO_DATA_IN7
TXEN
WM
RXEN
RDN
SYSCLK
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
161
163
FIFO_DATA_IN0
CS_ALT
AC7
SUSPEND#
SIWUA_CTRL
OEN_CTRL
FIFO_DATA_IN6
FIFO_DATA_IN4
FIFO_DATA_IN3
FIFO_DATA_IN2
RESET#
SDO_ALT
5
7
1
3
161
163
37
39
33
35
29
31
25
27
21
23
17
19
13
15
9
11
5
7
1
3
166
168
42
44
46
48
50
52
54
56
58
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100
166
168
42
44
46
48
50
52
54
56
58
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100
4
GND
GND
DBN0
CLK
DCKOP
CS
DCKON
102
104
106
108
110
112
114
116
118
120
122
124
126
128
130
132
134
136
138
140
142
144
146
148
150
152
154
156
158
160
170
172
102
104
106
108
110
112
114
116
118
120
122
124
126
128
130
132
134
136
138
140
142
144
146
148
150
152
154
156
158
160
GND
GND
J11C
GND
GND
BANK 3
LVDS_RXP8
LVDS_TXP8
LVDS_RXN8
LVDS_TXN8
12V
3V3
LVDS_RXP9
LVDS_TXP9
LVDS_RXN9
LVDS_TXN9
12V
3V3
LVDS_RXP10 LVDS_TXP10
LVDS_RXN10 LVDS_TXN10
12V
3V3
LVDS_RXP11 LVDS_TXP11
LVDS_RXN11 LVDS_TXN11
12V
3V3
LVDS_RXP12 LVDS_TXP12
LVDS_RXN12 LVDS_TXN12
12V
3V3
LVDS_RXP13 LVDS_TXP13
LVDS_RXN13 LVDS_TXN13
12V
3V3
LVDS_RXP14 LVDS_TXP14
LVDS_RXN14 LVDS_TXN14
12V
3V3
LVDS_RXP15 LVDS_TXP15
LVDS_RXN15 LVDS_TXN15
12V
3V3
LVDS_RXP16 LVDS_TXP16
LVDS_RXN16 LVDS_TXN16
12V
3V3
CLKIN2P
CLKOUT2P
CLKIN2N
CLKOUT2N
12V
3V3
165
167
BC4
BC2
BC0
DAP1
DBP2
DAP2
DAP3
3
BD0
BD2
BD6
BC5
DBP1
DBP3
BC6
DAP0
TRIGGER_P
TRIGGER_N
DAN3
DBN3
DAN2
DBN2
DAN1
DBN1
DAN0
PWRENN
DBP0
BD1
BD3
BD4
BD5
BD7
BC1
BC3
BC7
DATA
170
172
GND
GND
169
171
DCKIN
DAN7
DBN7
DAN6
DBN6
DAN5
DBN5
DAN4
DBN4
DAN15
DBN15
DAN14
DBN14
DAN13
DBN13
DAN12
DBN12
DAN11
DCKIP
DAP7
DBP7
DAP6
DBP6
DAP5
DBP5
DAP4
DBP4
DAP15
DBP15
DAP14
DBP14
DAP13
DBP13
DAP12
DBP12
DAP11
2
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
CUSTOMER NOTICE
GND
GND
101
103
105
107
109
111
113
115
117
119
121
123
125
127
129
131
133
135
137
139
141
143
145
147
149
151
153
155
157
159
169
171
101
103
105
107
109
111
113
115
117
119
121
123
125
127
129
131
133
135
137
139
141
143
145
147
149
151
153
155
157
159
2
Figure 8. DC2085 Demo Circuit Schematic (Sheet 4)
GND
GND
D0
D2
3V3
LVDS_TXP0
LVDS_TXN0
3V3
LVDS_TXP1
LVDS_TXN1
3V3
LVDS_TXP2
LVDS_TXN2
3V3
LVDS_TXP3
LVDS_TXN3
3V3
LVDS_TXP4
LVDS_TXN4
3V3
LVDS_TXP5
LVDS_TXN5
3V3
LVDS_TXP6
LVDS_TXN6
3V3
LVDS_TXP7
LVDS_TXN7
3V3
CLKOUT1P
CLKOUT1N
3V3
BANK 3
LVDS_RXP8
LVDS_TXP8
LVDS_RXN8
LVDS_TXN8
12V
3V3
LVDS_RXP9
LVDS_TXP9
LVDS_RXN9
LVDS_TXN9
12V
3V3
LVDS_RXP10 LVDS_TXP10
LVDS_RXN10 LVDS_TXN10
12V
3V3
LVDS_RXP11 LVDS_TXP11
LVDS_RXN11 LVDS_TXN11
12V
3V3
LVDS_RXP12 LVDS_TXP12
LVDS_RXN12 LVDS_TXN12
12V
3V3
LVDS_RXP13 LVDS_TXP13
LVDS_RXN13 LVDS_TXN13
12V
3V3
LVDS_RXP14 LVDS_TXP14
LVDS_RXN14 LVDS_TXN14
12V
3V3
LVDS_RXP15 LVDS_TXP15
LVDS_RXN15 LVDS_TXN15
12V
3V3
LVDS_RXP16 LVDS_TXP16
LVDS_RXN16 LVDS_TXN16
12V
3V3
CLKIN2P
CLKOUT2P
CLKIN2N
CLKOUT2N
12V
3V3
PD_ALT
DBP11
DAP10
DBP10
DAP9
DBP9
DAP8
DBP8
SDI_ALT
ASP-122952-01
41
43
45
47
49
51
53
55
57
59
61
63
65
67
69
71
73
75
77
79
81
83
85
87
89
91
93
95
97
99
165
167
DBN11
DAN10
DBN10
DAN9
DBN9
DAN8
DBN8
SCK_ALT
ASP-122952-01
J10C
BANK 2
J11B
GND
GND
41
43
45
47
49
51
53
55
57
59
61
63
65
67
69
71
73
75
77
79
81
83
85
87
89
91
93
95
97
99
3
ASP-122952-01
D1
D3
12V
LVDS_RXP0
LVDS_RXN0
12V
LVDS_RXP1
LVDS_RXN1
12V
LVDS_RXP2
LVDS_RXN2
12V
LVDS_RXP3
LVDS_RXN3
12V
LVDS_RXP4
LVDS_RXN4
12V
LVDS_RXP5
LVDS_RXN5
12V
LVDS_RXP6
LVDS_RXN6
12V
LVDS_RXP7
LVDS_RXN7
12V
CLKIN1P
CLKIN1N
12V
GND
GND
BANK 2
D1
D0
D3
D2
12V
3V3
LVDS_RXP0
LVDS_TXP0
LVDS_RXN0
LVDS_TXN0
12V
3V3
LVDS_RXP1
LVDS_TXP1
LVDS_RXN1
LVDS_TXN1
12V
3V3
LVDS_RXP2
LVDS_TXP2
LVDS_RXN2
LVDS_TXN2
12V
3V3
LVDS_RXP3
LVDS_TXP3
LVDS_RXN3
LVDS_TXN3
12V
3V3
LVDS_RXP4
LVDS_TXP4
LVDS_RXN4
LVDS_TXN4
12V
3V3
LVDS_RXP5
LVDS_TXP5
LVDS_RXN5
LVDS_TXN5
12V
3V3
LVDS_RXP6
LVDS_TXP6
LVDS_RXN6
LVDS_TXN6
12V
3V3
LVDS_RXP7
LVDS_TXP7
LVDS_RXN7
LVDS_TXN7
12V
3V3
CLKIN1P
CLKOUT1P
CLKIN1N
CLKOUT1N
12V
3V3
J10B
ASP-122952-01
HSMC CONNECTORS - MEZZANINE SIDE
4
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
DVDD33
DVDD33
DVDD33
DVDD33
AVDD33
AVDD33
AVDD33
AVDD33
AVDD33
AVDD33
AVDD33
AVDD33
AVDD33
AVDD33
SCALE = NONE
APP ENG. C. MAYOTT
AVDD3V3
AVDD33
AVDD1V8
AVDD18
U1
AVDD18
AVDD18
AVDD18
AVDD18
AVDD18
AVDD18
AVDD18
AVDD18
AVDD18
DVDD18
DVDD18
DVDD18
DVDD18
DVDD18
DVDD18
DVDD18
DVDD18
C59
2.2uF
C55
2.2uF
C50
2.2uF
DATE:
N/A
SIZE
C61
100uF
1
SHEET
DEMO CIRCUIT 2085A
LTC2000-X FAMILY
C64
100uF
DVDD3V3
C62
100uF
4
3
OF 4
REV.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
C63
2.2uF
C45
100uF
SVDD3V0
C46
2.2uF
LTC2000 HIGH SPEED DAC
TECHNOLOGY
C58
100uF
01/30/2014
IC NO.
C53
100uF
AVDD3V3
C54
100uF
DVDD1V8
C48
100uF
AVDD1V8
C49
100uF
C1
C2
C3
C4
D1
D2
D3
E1
E2
A5
B5
C5
D4
D5
E3
E4
E5
DVDD1V8
DVDD18
LTC2000 POWER BYPASS CAPACITORS
LTC2000 POWER CONNECTIONS
TITLE: SCHEMATIC
C60
2.2uF
C56
2.2uF
C51
2.2uF
PCB DES. M. HAWKINS
APPROVALS
C57
2.2uF
C52
2.2uF
M5
N5
P5
Q5
M4
N4
P1
P2
P3
P4
Q1
Q2
Q3
Q4
DVDD33
DVDD3V3
NET CONNECTIONS FOR LTC2000 POWER PINS TO PCB POWER NETS
1
R6
R5
R2
R1
Q6
P6
N6
N3
N2
N1
M6
M3
L6
L5
L4
L3
L2
L1
K6
K5
K4
K3
K2
K1
J6
J5
J4
J3
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
A1
A4
A6
B1
B2
B3
B4
B6
C6
D6
E6
F1
F2
F3
F4
F5
F6
G1
G2
G3
G4
G5
G6
H2
H3
H4
H5
H6
J2
5
A
B
C
D
DEMO MANUAL DC2085
Schematic Diagram
13
dc2085afa
DEMO MANUAL DC2085
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions:
This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT
OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete
in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety
measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union
directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.
If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date
of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU
OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims
arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all
appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or
agency certified (FCC, UL, CE, etc.).
No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance,
customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.
Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and
observe good laboratory practice standards. Common sense is encouraged.
This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
14 Linear Technology Corporation
dc2085afa
LT 0615 REV A • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507 ● www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2014