LINER LTC2158 15db differential amplifier and 14-bit, 310msps dual adc Datasheet

DEMO MANUAL DC1946A
LTC6430 and LTC2158
15dB Differential Amplifier
and 14-Bit, 310Msps Dual ADC
Description
Demonstration circuit 1946A supports the LTC®6430 and
the LTC2158 high speed ADC. It was specially designed
for applications that include an LTC6430, a high speed
amplifier with 15dB of gain.
The circuitry on the analog inputs is optimized for analog
input frequencies from 50MHz up to 1GHz. Refer to the
data sheet for proper input networks for different input
frequencies
Design files for this circuit board are available at
http://www.linear.com/demo
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and PScope
is a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
Table 1. DC1946A
DEMONSTRATION
CIRCUIT
ADC PART NUMBER
AMPLIFIER PART
NUMBER
RESOLUTION
MAXIMUM SAMPLE
RATE
INPUT FREQUENCY
1946A
LTC2158-14
LTC6430-15
14-BIT
310Msps
50-1000MHz
Table 2. Performance Summary (TA = 25°C)
PARAMETER
CONDITION
MIN
Supply Voltage – ADC (V+)
This Supply Must Provide Up to 800mA.
3.0
Supply Voltage – Amplifier (+5V)
This Supply Must Provide Up to 500mA.
This Pin Is Unregulated
4.75
TYP
5
Analog Input Range
Logic Input Voltages
Minimum Logic High
5.25
V
400
mVP-P
0.6
V
V
350
mV
Minimum Logic levels (100Ω Load, 3.5mA Mode,
1.25V Common Mode)
247
mV
10
Minimum Logic Levels (ENC­– Tied to GND)
Minimum Logic Levels (ENC– Not Tied to GND,
1.2V Common Mode)
310
0
Maximum Logic Level (ENC– Tied to GND)
Encode Clock Level (Differential at J2)
V
Nominal Logic Levels (100Ω Load, 3.5mA Mode,
1.25V Common Mode)
Sampling Frequency (Encode Clock Frequency)
Encode Clock Level (Single-Ended at J2)
UNIT
6
1.2
Maximum Logic Low
Logic Output Voltages (Differential)
MAX
V
3.6
0.2
MHz
V
V
dc1946af
1
DEMO MANUAL DC1946A
Quick Start Procedure
Demonstration circuit 1946A is easy to set up to evaluate
the performance of the LTC2158 A/D converter. Refer to
Figure 1 for proper measurement equipment setup and
follow the procedure below:
SETUP
The DC1371 USB demonstration circuit was supplied
with the DC1946A global demonstration circuit, follow the
DC1371 Quick Start Guide to install the required software
and for connecting the DC1371 to the DC1946A and to a PC.
3.0V TO 5V
DIFFERENTIAL
ANALOG INPUTS
JUMPERS SHOWN IN
THEIR DEFAULT POSITIONS
+5V
CHANNEL 1
CHANNEL 2
THE DC1946 CONNECTS
TO THE DC1371 VIA AN
FMC CONNECTOR
SINGLE-ENDED
ENCODE CLOCK
Figure 1. DC1946A Setup (Zoom for Detail)
2
dc1946af
DEMO MANUAL DC1946A
Quick Start Procedure
hardware setup
SMAs
J4 & J5: Channel 1 Analog Inputs: As a default the
DC1946A is populated to accept a single-ended input. Apply a single-ended signal to J4. For use with a differential
signal remove R3 and populate R11 with a 0Ω resistor.
Apply a differential signal to these SMA connectors from
a differential driver. These SMAs are positioned 0.8" apart
to accommodate LTC differential driver boards.
J6 & J7: Channel 2 Analog Inputs. As a default the
DC1946A is populated to accept a single-ended input. Apply a single-ended signal to J6. For use with a differential
signal remove R7 and populate R13 with a 0Ω resistor.
Apply a differential signal to these SMA connectors from
a differential driver. These SMAs are positioned 0.8" apart
to accommodate LTC differential driver boards.
J2 CLK+: Positive Encode Clock Input. As a default the
demo board is populated to accept a single-ended clock
input from a low jitter signal generator. For other population options see the encode clock section of this manual.
J3 CLK–: Negative Encode Clock Input. As a default this
input port is grounded to accommodate the single-ended
clock drive. For other population options see the encode
clock section of this manual.
Turrets
V+ : Positive input voltage for the ADC and digital buffers.
This voltage feeds a regulator that supplies the proper
voltages for the ADC and buffers. The voltage range for
this turret is 3.3V to 5V.
+5V: Positive input voltage for the LTC6430. Apply a 5V
signal to this turret to power the LTC6430. This turret is
connected to the amplifier directly and is not regulated.
There is a resistor on the back of the board R14 that will
connect the power pins of the two amplifiers. By removing
this resistor each amplifier can be powered independently.
SENSE: Optional Reference Voltage. This pin is connected
directly to the SENSE pin of the ADC. Connect SENSE to a
1.25V external reference and the external reference mode
is automatically selected. The external reference must be
1.25V ±25mV for proper operation. If no external voltage
is supplied, this pin will be pulled up to VDD through a
weak pull-up resistor.
GND: Ground Connection. This demo board only has a
single ground plane. This turret should be tied to the GND
terminal of the power supply being used.
Jumpers
The DC1946A demonstration circuit should have the following jumper settings as default positions (per Figure 1)
which configure the ADC in serial programming mode.
In the default configuration JP1-JP2 should be left in the
default locations. This will pull PAR/SER low putting the
part in serial configuration mode.
JP1-PAR/SER: Selects Parallel or Serial Programming
Mode (Default: Serial). The DC1946A will not work in parallel
programming mode unless a custom FPGA load is used.
JP2-EEPROM: EEPROM Write Protect. For factory use
only. Should be left in the enable (PROG) position.
APPLYING POWER AND SIGNALS TO THE DC1946A
DEMONSTRATION CIRCUIT
If a DC1371 is used to acquire data from the DC1946A,
the DC1371 must FIRST be connected to a powered USB
port and provided an external 5V BEFORE applying +3V to
+5.0V across the pins marked V+ and GND on the DC1946A.
The 5V for the LTC6430 should be applied after the ADC
is powered. DC1946A requires 3V for proper operation.
Regulators on the board produce the voltages required for
the ADC. The power for the LTC6430 is unregulated. The
DC1946A demonstration circuit requires up to 800mA on
V+ and 500mA on +5V. The DC1946A should not be removed or connected to the DC1371 while power is applied.
dc1946af
3
DEMO MANUAL DC1946A
Quick Start Procedure
ANALOG INPUT NETWORK
The input network of the DC1946A can be modified to accommodate various applications. In the default setup J4 and
J6 are used as single-ended inputs. Onboard transformers
are used to do a single-ended-to-differential translation
to drive the LTC6430 differentially. If differential drive is
desired both of the inputs are brought out to SMA connectors so the demo board can be driven with a differential
source. To drive the demo board with a differential source
simply remove R3 and R7 and populate R11 and R13 with
0Ω resistors. Then remove T1 and T2 and jump over the
pads with 0Ω resistors. This will allow the board to be
driven differentially from a differential source. The inputs
SMA connectors for the input signals are 0.8" apart to
accommodate LTC differential driver boards.
In almost all cases, off board filters will be required on
the analog input of the differential driver to produce data
sheet SNR.
The off board filters should be located close to the inputs of
the differential driver to avoid reflections from impedance
discontinuities at the driven end of a long transmission line.
Most filters do not present 50Ω outside the passband. In
some cases, 3dB to 10dB pads may be required to obtain
low distortion.
Apply the analog input signal of interest to the SMA connectors on the DC1946A marked J4 and J6.
ENCODE CLOCK
Apply an encode clock to the SMA connector on the
DC1946A demonstration circuit board marked J2. As a
default the DC1946A is populated to have a single-ended
clock input. It is possible to modify the demo board.
For the best noise performance, the encode input must be
driven with a very low jitter signal source. The amplitude
should be as large as possible up to 2VP-P or 10dBm.
Using bandpass filters on the clock and the analog input will
improve the noise performance by reducing the wideband
noise power of the signals. In the case of the DC1946A, a
bandpass filter used for the clock should be used prior to
the DC1075A. Data sheet FFT plots are taken with 10-pole
LC filters made by TTE (Los Angeles, CA) to suppress signal
4
generator harmonics, nonharmonically related spurs and
broadband noise. Low phase noise Agilent 8644B generators are used with TTE bandpass filters for both the clock
input and the analog input.
When using a PECL or LVDS clock you can drive the
DC1946A differentially through J2 and J3. From the default
population, remove the resistors in the R33, R22 and R23
positions and populate 0Ω resistors in the R31, R32, R34,
and R35 positions. Add the appropriate termination for
your clock signal. R27, R28, R29, R30 and R26 are available to provide the proper termination for LVDS, PECL,
or CML signaling. Blocking capacitors can be installed in
the R44 and R45 positions if the common mode voltage
of the clock is not compatible with the LTC2158.
SOFTWARE
The DC1371 is controlled by the PScope™ system software provided or downloaded from the Linear Technology
website at http://www.linear.com/software/. If a DC1371
was provided, follow the DC1371 Quick Start Guide and
the instructions below.
To start the data collection software if “PScope.exe”, is
installed (by default) in \Program Files\LTC\PScope\, double
click the PScope icon or bring up the run window under
the start menu and browse to the PScope directory and
select PScope.
If the DC1946A demonstration circuit is properly connected
to the DC1371, PScope should automatically detect the
DC1946A, and configure itself accordingly. If necessary
the procedure below explains how to manually configure
PScope.
Under the “Configure” menu, go to “ADC Configuration....”
Check the “Config Manually” box and use the following
configuration options, see Figure 2:
Manual Configuration settings:
Bits: 14
Alignment: 16
FPGA Ld: S2157
Channs: 2
dc1946af
DEMO MANUAL DC1946A
Quick Start Procedure
Figure 2: ADC Configuration
Bipolar: Unchecked
Positive-Edge Clk: Unchecked
If everything is hooked up properly, powered and a suitable encode clock is present, clicking the “Collect” button
should result in time and frequency plots displayed in
the PScope window. Additional information and help for
PScope is available in the DC1371 Quick Start Guide and in
the online help available within the PScope program itself.
SERIAL PROGRAMMING
PScope has the ability to program the DC1946A board
serially through the DC1371. There are several options
available for the LTC2158 that are only available through
serially programming. PScope allows all of these features
to be tested.
These options are available by first clicking on the “Set
Demo Bd Options” icon on the PScope toolbar (Figure 3).
Figure 4: Demobd Configuration Options
Sleep Mode – Selects between normal operation, sleep
modes:
Off (Default): ADC is powered and active
On: ADC is powered down
Nap Mode – ADC core powers down while references
stay active:
Figure 3: PScope Toolbar
This will bring up the menu shown in Figure 4.
This menu allows any of the options available for the
LTC2158 to be programmed serially. The LTC2158 family
has the following options:
Off (Default): ADC is powered and active
On: ADC is put into nap mode
Power Down B – Powers down channel 2 while references
stay active:
Off (Default): ADC is powered and active
On: Channel 2 of ADC is powered down
dc1946af
5
DEMO MANUAL DC1946A
Quick Start Procedure
Clock Invert – Selects the polarity of the CLKOUT signal:
Test Pattern – Selects Digital output test patterns:
Disable (Default): Normal CLKOUT polarity
Off (Default): ADC data presented at output
Enable: CLKOUT polarity is inverted
All out = 1: All digital outputs are 1
Clock Delay – Selects the phase delay of the CLKOUT signal:
None (Default): No CLKOUT delay
45 deg: CLKOUT delayed by 45 degrees
90 deg: CLKOUT delayed by 90 degrees
135 deg: CLKOUT delayed by 135 degrees
Clock Duty Cycle – Enables or disables duty cycle stabilizer:
All out = 0: All digital outputs are 0
Checkerboard: OF and D13-D0 Alternate between
1 01 0101 1010 0101 and 0 10 1010 0101 1010 on
alternating samples.
Alternating: Digital outputs alternate between all 1’s
and all 0’s on alternating samples.
ABP – Alternate bit polarity (ABP) mode
Stabilizer off (Default): Duty cycle stabilizer disabled
Off (Default): Disables alternate bit polarity
Stabilizer on: Duty cycle stabilizer enabled
On: Enables alternate bit polarity (Before enabling ABP,
be sure the part is in offset binary mode)
Output Current – Selects the LVDS output drive current:
1.75mA (Default): LVDS output driver current
2.1mA: LVDS output driver current
2.5mA: LVDS output driver current
3.0mA: LVDS output driver current
3.5mA: LVDS output driver current
4.0mA: LVDS output driver current
4.5mA: LVDS output driver current
Internal Termination – Enables LVDS internal termination:
Off (Default): Disables internal termination
On: Enables internal termination
Outputs – Enables digital outputs:
Enabled (Default): Enables digital outputs
TP Enable – Enables test patterns
Disabled (Default): Disables test patterns, ADC data
presented at output
Enabled: Enables the test pattern
Randomizer – Enables data output randomizer
Off (Default): Disables data output randomizer
On: Enables data output randomizer
Two’s Complement – Enables two’s complement mode
Off (Default): Selects offset binary mode
On: Selects two’s complement mode
Once the desired settings are selected hit OK and PScope
will automatically update the register of the device on the
DC1946A demo board.
Disabled: Disables digital outputs
6
dc1946af
DEMO MANUAL DC1946A
Parts List
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
1
14
C1, C3, C6, C8, C10, C16, C18, C20,
C22, C24, C32, C41, C42, C53
CAP., NPO, 1000pF, 50V 5% 0402
MURATA, GRM1555C1H102JA01D
2
16
C2, C5, C11, C13, C14, C21, C25, C29,
C34, C40, C50, C51, C52, C54, C55,
C56
CAP., X5R, 0.1µF, 10V 10% 0402
AVX, 0402ZD104KAT2A
3
3
C4, C17, C30
CAP., X5R, 2.2µF, 10V 20% 0402
TAIYO YUDEN, LMK105BJ225MV-F
4
4
C7, C12, C46, C47
CAP., X5R, 0.47µF, 10V 10% 0402
TDK, C1005X5R1A474K
5
4
C9, C23, C26, C28
CAP., NPO, 68pF, 16V 5% 0402
TDK, C1005C0G1H680J
6
2
C15, C39
CAP., X5R, 1.0µF, 10V 10% 0402
AVX, 0402ZD105KAT2A
7
0
C19, C27, C48, C57, C58, C59, C60
CAP., OPT, 0402
OPTION
8
1
C31
CAP., TANT., 100µF 16V 10% 6032
KEMET, T491C107K016ZT
9
1
C33
CAP., X5R, 47µF, 16V 20% 1210
TAIYO YUDEN, EMK325BJ476MM-T
10
4
C35, C36, C37, C38
CAP., X7R, 47pF, 16V 10% 0402
AVX, 0402YC470KAT2A
11
4
C43, C44, C45, C49
CAP., X5R, 0.01µF, 16V 10% 0402
AVX, 0402YC103KAT2A
12
2
E1, E2
TEST POINT, TURRET, 0.094, PBF
MILL-MAX, 2501-2-00-80-00-00-07-0
13
3
E3, E4, E5
TEST POINT, TURRET, 0.061, PBF
MILL-MAX, 2308-2-00-80-00-00-07-0
14
2
JP1, JP2
HEADER, 3 PIN, 0.079
SULLINS, NRPN031PAEN-RC
15
1
J1
BGA CONNECTOR, 40X10
SAMTEC, SEAM-40-02.0-S-10-2-A-K-TR
16
2
J2, J3
CON., SMA JACK, STRAIGHT, THRU-HOLE
AMPHENOL CONNEX, 132134
17
4
J4, J5, J6, J7
CON., SMA 50Ω EDGE-LAUNCH
EMERSON, 142-0701-851
18
4
L1, L2, L3, L4
INDUCTOR, CER. CHIP, 560nH, 2%, 0603
COILCRAFT, 0603LS-561XGLB
19
1
L5
FERRITE BEAD, 33Ω @ 100MHz, 1206
MURATA, BLM31PG330SN1L
20
1
L6
RES., CHIP, 0Ω, 1/10W, 0603
VISHAY, CRCW06030000Z0EA
21
0
L7 (OPT)
INDUCTOR, OPTION, 0603
OPTION
22
2
L8, L9
INDUCTOR, CER. CHIP, 120nH, 2%, 0402
COILCRAFT, 0402CS-R12XGLU
23
8
R1, R2, R16, R17, R20, R21, R38, R39 RES., CHIP, 49.9Ω, 1/16W, 1% 0402
VISHAY, CRCW040249R9FKED
24
7
R3, R7, R12, R33, R44, R45, R50
VISHAY, CRCW04020000Z0ED
25
0
R4, R6, R11, R13, R27, R28, R29, R30, RES., CHIP, OPT, 0402
R31, R32, R34, R35, R46, R47, R48,
R49, R51, R52
OPTION
26
4
R5, R8, R10, R15
RES., CHIP, 348Ω, 1/16W, 1% 0402
VISHAY, CRCW0402348RFKED
27
2
R9, R37
RES., CHIP, 3k, 1/16W, 1% 0402
VISHAY, CRCW04023K00FKED
28
1
R14
RES., CHIP, 0Ω, 1/8W, 0805
VISHAY, CRCW08050000Z0EA
29
3
R18, R24, R25
RES., CHIP, 4.99k, 1/16W, 1% 0402
VISHAY, CRCW04024K99FKED
30
5
R19, R40, R41, R42, R43
RES., CHIP, 1k, 1/16W, 1% 0402
VISHAY, CRCW04021K00FKED
31
2
R22, R23
RES., CHIP, 5.1Ω, 1/16W, 1% 0402
VISHAY, CRCW04025R10FKED
RES., CHIP, 0Ω, 1/16W, 0402
32
1
R26
RES., CHIP, 100Ω, 1/16W, 1% 0402
VISHAY, CRCW0402100RFKED
33
1
R36
RES., CHIP, 182k, 1/16W, 1% 0402
VISHAY, CRCW0402182KFKED
34
4
R53, R54, R55, R56
RES., CHIP, 150Ω, 1/16W, 1%, 0402
VISHAY, CRCW0402150RFKED
dc1946af
7
DEMO MANUAL DC1946A
Parts List
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
35
3
T1, T2, T3
TRANSFORMER, RF,SMT, 1:1BALUN
MACOM, MABA-007159-000000
36
0
T4, T5 (OPT)
OPTION: TRANSFORMER, RF,SMT, 1:1BALUN
MINI-CIRCUTS, ADTL2-18+
37
1
U1
IC, DUAL 14-BIT ADC, QFN64
LINEAR TECH., LTC2158CUP-14#PBF
38
2
U2, U3
IC, 50Ω IF AMPLIFIER, QFN
LINEAR TECH., LTC6430AIUF-15#PBF
39
1
U4
I.C., LOW DROPOUT REGULATOR, 3X3MM, DFN LINEAR TECH., LT3080EDD-1#PBF
40
1
U5
IC, SERIAL EEPROM, TSSOP
MICROCHIP TECH., 24LC32A-I/ST
41
2
XJP1, XJP2
SHUNT, 2MM
SAMTEC, 2SN-BK-G
8
dc1946af
A
B
C
D
CLK-
CLK+
SENSE
GND
J3
J2
E3
PAR
SER
JP1
V+
1
1
3
2
1
5
PAR/SER
C33
47uF
1210
E2
E1
VDD
OPT
OPT
0 OHMS
R32
PAD
VOUT
VOUT
VOUT
C2
0.1uF
C40
0.1uF
C25
0.1uF
R36
182K
9
1
2
3
C30
2.2uF
C43
0.01uF
OPT
OPT
C45
0.01uF
R35
3
2
1
R34
4
5
T3
MABA-007159-000000
C44
0.01uF
AIN2+
AIN2-
AIN1-
AIN1+
U4
VCTRL
VIN
LT3080EDD-1
5
8
R31
R33
R19 1K
C39
1.0uF
VIN
4
1. ALL RESISTORS AND CAPACITORS ARE 0402
NOTE: UNLESS OTHERWISE SPECIFIED
C49
0.01uF
C15
1.0uF
7
SET
4
V+
3V-6V
4
R20
49.9
R21
49.9
R2
49.9
R1
49.9
R17
49.9
R16
49.9
+
5.1
R22
5.1
R23
C31
100uF
6032
L5
0 OHM RES.
C52
0.1uF
C48
OPT
100
R26
OPT
0603
L7
VDD
C17
2.2uF
15
16
65
1
2
3
4
5
6
7
8
9
10
11
12
13
14
VDD
VDD
GND
VDD
VDD
GND
AINA+
AINAGND
SENSE
VREF
GND
VCM
GND
AINBAINB+
GND
VDD
R45 0 OHMS
R44 0 OHMS
VDD
3K
VDD
VDD
R9
CS
SCK
SDI
SDO
CUSTOMER NOTICE
R29
OPT
R27
OPT
R28
OPT
OPT
R30
0.1uF
C29
2.2uF
C4
C14
0.1uF
OVDD
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
3
GND PAD
LTC2158-14
U1
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.
R39 49.9
R38 49.9
C13
0.1uF
FERRITE BEAD, 33 OHMS
1206
R37
3K
L6
3
VDD
2
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
2
SCALE = NONE
APP ENG. C.MAYOTT
PCB DES. M.HAWKINS
C11
0.1uF
DATE:
N/A
SIZE
C50
0.1uF
C51
0.1uF
C46
0.47uF
10/18/2013
1
DEMO CIRCUIT 1946A
IC NO. LTC2158CUP-14, LTC6430AIUF-15
SHEET 1
3
OF 3
REV.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
C47
0.47uF
OF-
DB0_1-
DB2_3-
DB4_5-
DB6_7-
DB8_9-
DB10_11-
DB12_13-
CLKOUT-
DA0_1-
DA2_3-
DA4_5-
DA6_7-
DA8_9-
DA10_11-
DATE
10/18/2013
LTC2158 AND LTC6430 COMBO BOARD
TECHNOLOGY
C12
0.47uF
OVDD
OF+
DB0_1+
DB2_3+
DB4_5+
DB6_7+
DB8_9+
DB10_11+
DB12_13+
CLKOUT+
DA0_1+
DA2_3+
DA4_5+
DA6_7+
DA8_9+
DA10_11+
DA12_13-
C.MAYOTT
PRODUCTION
DA12_13+
APPROVED
DESCRIPTION
3
1
REVISION HISTORY
REV
TITLE: SCHEMATIC
C7
0.47uF
APPROVALS
C5
0.1uF
VDD
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
-
ECO
OVDD
OGND
DA4_5+
DA4_5DA2_3+
DA2_3DA0_1+
DA0_1CLKOUT+
CLKOUTDB12_13+
DB12_13DB10_11+
DB10_11DB8_9+
DB8_9OGND
OVDD
VDD
PAR/SER
CS
SCK
SDI
SDO
GND
DA12_13+
DA12_13DA10_11+
DA10_11DA8_9+
DA8_9DA6_7+
DA6_7OVDD
VDD
GND
ENC+
ENCGND
OFOF+
DBO_1DBO_1+
DB2_3DB2_3+
DB4_5DB4_5+
DB6_7DB6_7+
OVDD
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
5
A
B
C
D
DEMO MANUAL DC1946A
Schematic Diagram
dc1946af
9
A
B
C
D
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
A33
A34
A35
A36
A37
A38
A39
A40
5
DB2_3+
DB6_7+
DB10_11+
DA2_3+
DA6_7+
DA10_11+
GND
DP1_M2C_P
DP1_M2C_N
GND
GND
DP2_M2C_P
DP2_M2C_N
GND
GND
DP3_M2C_P
DP3_M2C_N
GND
GND
DP4_M2C_P
DP4_M2C_N
GND
GND
DP5_M2C_P
DP5_M2C_N
GND
GND
DP1_C2M_P
DP1_C2M_N
GND
GND
DP2_C2M_P
DP2_C2M_N
GND
GND
DP3_C2M_P
DP3_C2M_N
GND
GND
DP4_C2M_P
DP4_C2M_N
GND
GND
DP5_C2M_P
DP5_C2M_N
GND
SEAM-10X40PIN
J1A
DB2_3-
DB6_7-
DB10_11-
DA2_3-
DA6_7-
DA10_11-
RES1
GND
GND
DP9_M2C_P
DP9_M2C_N
GND
GND
DP8_M2C_P
DP8_M2C_N
GND
GND
DP7_M2C_P
DP7_M2C_N
GND
GND
DP6_M2C_P
DP6_M2C_N
GND
GND
GBTCLK1_M2C_P
GBTCLK1_M2C_N
GND
GND
DP9_C2M_P
DP9_C2M_N
GND
GND
DP8_C2M_P
DP8_C2M_N
GND
GND
DP7_C2M_P
DP7_C2M_N
GND
GND
DP6_C2M_P
DP6_C2M_N
GND
GND
RES0
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
B33
B34
B35
B36
B37
B38
B39
B40
SEAM-10X40PIN
VREF_A_M2C
PRSNT_M2C_N
GND
CLK0_M2C_P
CLK0_M2C_N
GND
LA02_P
LA02_N
GND
LA04_P
LA04_N
GND
LA07_P
LA07_N
GND
LA11_P
LA11_N
GND
LA15_P
LA15_N
GND
LA19_P
LA19_N
GND
LA21_P
LA21_N
GND
LA24_P
LA24_N
GND
LA28_P
LA28_N
GND
LA30_P
LA30_N
GND
LA32_P
LA32_N
GND
VADJ
SEAM-10X40PIN
J1B
H1
H2
H3
H4
H5
H6
H7
H8
H9
H10
H11
H12
H13
H14
H15
H16
H17
H18
H19
H20
H21
H22
H23
H24
H25
H26
H27
H28
H29
H30
H31
H32
H33
H34
H35
H36
H37
H38
H39
H40
J1H
PG_M2C
GND
GND
HA00_P_CC
HA00_N_CC
GND
HA04_P
HA04_N
GND
HA08_P
HA08_N
GND
HA12_P
HA12_N
GND
HA15_P
HA15_N
GND
HA19_P
HA19_N
GND
HB02_P
HB02_N
GND
HB04_P
HB04_N
GND
HB08_P
HB08_N
GND
HB12_P
HB12_N
GND
HB16_P
HB16_N
GND
HB19_P
HB19_N
GND
VADJ
4
SEAM-10X40PIN
J1F
OF-
DB0_1-
DB4_5-
DB8_9-
DB12_13-
DA0_1-
DA4_5-
DA8_9-
DA12_13-
4
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
F13
F14
F15
F16
F17
F18
F19
F20
F21
F22
F23
F24
F25
F26
F27
F28
F29
F30
F31
F32
F33
F34
F35
F36
F37
F38
F39
F40
VDD
OF+
DB0_1+
DB4_5+
DB8_9+
DB12_13+
DA0_1+
DA4_5+
DA8_9+
DA12_13+
GND
HA01_P_CC
HA01_N_CC
GND
GND
HA05_P
HA05_N
GND
HA09_P
HA09_N
GND
HA13_P
HA13_N
GND
HA16_P
HA16_N
GND
HA20_P
HA20_N
GND
HB03_P
HB03_N
GND
HB05_P
HB05_N
GND
HB09_P
HB09_N
GND
HB13_P
HB13_N
GND
HB21_P
HB21_N
GND
HB20_P
HB20_N
GND
VADJ
GND
SEAM-10X40PIN
J1E
G1
G2
G3
G4
G5
G6
G7
G8
G9
G10
G11
G12
G13
G14
G15
G16
G17
G18
G19
G20
G21
G22
G23
G24
G25
G26
G27
G28
G29
G30
G31
G32
G33
G34
G35
G36
G37
G38
G39
G40
E1
E2
E3
E4
E5
E6
E7
E8
E9
E10
E11
E12
E13
E14
E15
E16
E17
E18
E19
E20
E21
E22
E23
E24
E25
E26
E27
E28
E29
E30
E31
E32
E33
E34
E35
E36
E37
E38
E39
E40
3
GND
CLK1_C2M_P
CLK1_C2M_N
GND
GND
HA03_P
HA03_N
GND
HA07_P
HA07_N
GND
HA11_P
HA11_N
GND
HA14_P
HA14_N
GND
HA18_P
HA18_N
GND
HA22_P
HA22_N
GND
HB01_P
HB01_N
GND
PB07_P
HB07_N
GND
HB11_P
HB11_N
GND
HB15_P
HB15_N
GND
HB18_P
HB18_N
GND
VIO_B_M2C
GND
3
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.
C.MAYOTT
2
SCALE = NONE
M.HAWKINS
PCB DES.
APPROVALS
K1
K2
K3
K4
K5
K6
K7
K8
K9
K10
K11
K12
K13
K14
K15
K16
K17
K18
K19
K20
K21
K22
K23
K24
K25
K26
K27
K28
K29
K30
K31
K32
K33
K34
K35
K36
K37
K38
K39
K40
2
APP ENG.
VREF_B_M2C
GND
GND
CLK1_M2C_P
CLK1_M2C_N
GND
HA02_P
HA02_N
GND
HA06_P
HA06_N
GND
HA10_P
HA10_N
GND
HA17_P_CC
HA17_N_CC
GND
HA21_P
HA21_N
GND
HA23_P
HA23_N
GND
HB00_P_CC
HB00_N_CC
GND
HB06_P_CC
HB06_N_CC
GND
HB10_P
HB10_N
GND
HB14_P
HB14_N
GND
HB17_P_CC
HB17_N_CC
GND
VIO_B_M2C
SEAM-10X40PIN
PG_C2M
GND
GND
GBTCLK0_M2C_P
GBTCLK0_M2C_N
GND
GND
LA01_P_CC
LA01_N_CC
GND
LA05_P
LA05_N
GND
LA09_P
LA09_N
GND
LA13_P
LA13_N
GND
LA17_P_CC
LA17_N_CC
GND
LA23_P
LA23_N
GND
LA26_P
LA26_N
GND
TCK
TDI
TDO
3P3VAUX
TMS
TRST_N
GA1
3P3V
GND
3P3V
GND
3P3V
J1D
SEAM-10X40PIN
J1K
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
D25
D26
D27
D28
D29
D30
D31
D32
D33
D34
D35
D36
D37
D38
D39
D40
CUSTOMER NOTICE
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
J12
J13
J14
J15
J16
J17
J18
J19
J20
J21
J22
J23
J24
J25
J26
J27
J28
J29
J30
J31
J32
J33
J34
J35
J36
J37
J38
J39
J40
CLKOUT+
CLKOUT-
SEAM-10X40PIN
J1J
SEAM-10X40PIN
GND
CLK0_C2M_P
CLK0_C2M_N
GND
GND
LA00_P_CC
LA00_N_CC
GND
LA03_P
LA03_N
GND
LA08_P
LA08_N
GND
LA12_P
LA12_N
GND
LA16_P
LA16_N
GND
LA20_P
LA20_N
GND
LA22_P
LA22_N
GND
LA25_P
LA25_N
GND
LA29_P
LA29_N
GND
LA31_P
LA31_N
GND
LA33_P
LA33_N
GND
VADJ
GND
J1G
8
VCC
VSS
10
4
5
24LC32A
U5
SCL
SDA
WP
A2
A1
A0
6
5
7
3
2
1
C54
0.1uF
DATE:
N/A
SIZE
R25
4.99K
3
2
1
JP2
SEAM-10X40PIN
GND
DP0_C2M_P
DP0_C2M_N
GND
GND
DP0_M2C_P
DP0_M2C_N
GND
GND
LA06_P
LA06_N
GND
GND
LA10_P
LA10_N
GND
GND
LA14_P
LA14_N
GND
GND
LA18_P_CC
LA18_N_CC
GND
GND
LA27_P
LA27_N
GND
GND
SCL
SDA
GND
GND
GA0
12P0V
GND
12P0V
GND
3P3V
GND
J1C
10/18/2013
1
DEMO CIRCUIT 1946A
IC NO. LTC2158CUP-14, LTC6430AIUF-15
SHEET 2
3
REV.
OF 3
LTC2158 AND LTC6430 COMBO BOARD
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
PROG
WP
R18
4.99K
EEPROM
TECHNOLOGY
C38
47pF
R24
4.99K
R42 1K
R41 1K
R40 1K
R43 1K
C37
47pF
C36
47pF
C35
47pF
TITLE: SCHEMATIC
SCK
SDI
SDO
CS
1
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
C33
C34
C35
C36
C37
C38
C39
C40
A
B
C
D
DEMO MANUAL DC1946A
Schematic Diagram
dc1946af
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
-INB
+INB
-INA
+INA
R47
OPT
1
1
R6
OPT
R46
OPT
1
1
3
2
1
T2_3
T2_2
T5
4
5
6
1000pF
C1
R56
150
R8
348
R10
348
T2_3
T2_2
T2_1
4
R15
348
C26
68pF
C9
68pF
C28
68pF
C27 OPT
R51 OPT
R55
150
1000pF
C32
1000pF
C20
R54
150
R5
348
C23
68pF
C19 OPT
R52 OPT
R53
150
1000pF
MINI-CIRCUITS, ADT2L-18+
T2_4 3
2
T1_2
T1_3
T2_5 1
T1_1
MINI-CIRCUITS, ADT2L-18+
4
6
T1_4 3
5
C60
OPT
T2_4
4
5
T2_5
T2_1
T1_3
T1_2
C59
OPT T2
MABA-007159
3
2
1
MABA-007159
C58
OPT
T1_4
4
5
T1_5
T1
T1_1
TRANFORMER PART OPTION FOR T1 AND T2
5
T4
R7
0 OHMS
OPT
R13
0 OHMS
R12
R4
OPT
R3
0 OHMS
OPT
R11
0 OHMS
R50
R48
OPT
2
T1_5 1
J7
J6
J5
J4
R49
OPT
C57
OPT
C18
4
6
5
4
3
2
1
6
5
4
3
2
1
NC
NC
NC
NC
NC
NC
25
GND
NC
NC
NC
NC
NC
NC
25
GND
24
IN
-IN
7
24
IN
-IN
23
C41
1000pF
7
GND
GND
8
23
GND
VCC_A
22
GND PAD
VCC
C22
1000pF
VCC_B
9
22
GND PAD
VCC
VCC
9
GND
8
VCC
21
NC
NC
10
21
NC
NC
10
3
13
14
15
16
17
18
UF24 4X4
LTC6430-15
U2
C21
0.1uF
UF24 4X4
VCC_B
13
14
15
16
17
18
U3
LTC6430-15
C56
0.1uF
3
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
2
SCALE = NONE
0805
+5V
APP ENG. C. MAYOTT
L8
AIN1-
AIN1+
1
DEMO CIRCUIT 1946A
IC NO. LTC2158CUP-14, LTC6430AIUF-15
SHEET 3
3
OF 3
REV.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
1
LTC2158 AND LTC6430 COMBO BOARD
TECHNOLOGY
DATE: 10/18/2013
N/A
SIZE
TITLE: SCHEMATIC
AIN2+
L9
120nH
AIN2-
120nH
R14
0 OHMS
+5V
APPROVALS
VCC_B
E5
E4
2
PCB DES. M.HAWKINS
1000pF
C3
1000pF
C8
1000pF
C53
L4
560nH
0603
VCC_B
VCC_A
L1
560nH
0603
1000pF
C16
1000pF
C6
1000pF
C10
L3
560nH
0603
VCC_A
L2
560nH
0603
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
C34
0.1uF
-OUT
GND
NC
T_DIODE
GND
+OUT
C42
1000pF
VCC_A
C55
0.1uF
-OUT
GND
NC
T_DIODE
GND
+OUT
C24
1000pF
19
NC
20
NC
NC
11
NC
12
19
NC
20
NC
NC
11
NC
12
1
2
1
2
1
2
1
2
1
2
1
2
5
A
B
C
D
DEMO MANUAL DC1946A
Schematic Diagram
dc1946af
11
DEMO MANUAL DC1946A
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
12 Linear Technology Corporation
dc1946af
LT 0514 • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507 ● www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2014