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DESCRIPTION
The LTC2393-16 family are low noise high speed ADCs
with both parallel and serial outputs that can operate from
a single 5V supply. The LTC2393-16 family supports a
large ±4.096V fully differential input range. This makes
them ideal for high performance applications that require
maximum dynamic range. Demonstration circuit 1501A
provides the user a means of evaluating the performance
of these ADCs in both parallel and serial modes and is
CLK IN
1MHz MAX
(80MHz FOR SERIAL)
3.3V
MAXIMUM
PK-PK
–
A
IN
0V TO 4.096V
MAXIMUM
+
A
IN
0V TO 4.096V
MAXIMUM
DEMO BOARD
DC1501A-A
DC1501A-B
DC1501A-C
–9V
IC
MAX SAMPLE RATE
LTC2393CLX-16
1Msps
LTC2392CLX-16
0.5Msps
LTC2391CLX-16
0.25Msps
Figure 1. DC1501A Connection Diagram
DEMO MANUAL DC1501A
LTC2393-16/LTC2392-16/
LTC2391-16, 1MSPS, 0.5MSPS,
0.25MSPS Low Noise ADC
intended to dem onstrate recommended grounding, part
placement, routing and bypassing for this family of parts.
Also several suggested driver circuits for the analog inputs
will be presented.
Design fi les 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 of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
GND
+9V
PARALLEL MAX CLK IN
1MHz
0.5MHz
0.25MHz
TO
DC718
SERIAL MAX CLK IN
80MHz
40MHz
20MHz
dc1501A
1
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Related Manuals for Linear Technology LTC2393-16
Summary of Contents for Linear Technology LTC2393-16
- Page 1 L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear of these ADCs in both parallel and serial modes and is Technology Corporation. All other trademarks are the property of their respective owners.
- Page 2 J17. Connect a low jitter 1MHz 3.3V sine wave data. The Collect button then changes to Pause, which or square wave to connector J16 for LTC2393-16. Apply can be clicked to stop data acquisition. 500kHz for LTC2392-16 and 250kHz for LTC2391-16.
- Page 3 DEMO MANUAL DC1501A DC1501A SETUP Figure 2. Single-Ended to Differential Converter Reference Figure 4 can be used. The circuit of Figure 3 AC-couples the input signal and is usable down to about 10kHz. The J7, J8 and J11 allow you to select an on chip reference lower frequency limit can be extended by increasing C37 or an external LT1790A-4.096 as the reference.
- Page 4 DEMO MANUAL DC1501A DC1501A SETUP Figure 3. AC-Coupled Differential Driver Figure 4. DC Coupled Differential Driver Data Collection signal level (–1dB) has to be added back to the SNR that PScope displays. With the example shown in Figure 6 this This demo board is tested in house by duplicating the FFT plot means that the actual SNR would be 94.061dB.
- Page 5 DEMO MANUAL DC1501A DC1501A SETUP If you do not have a signal generator capable of ppm levels of frequency accuracy or if it cannot be slaved to the clock frequency, you can use an FFT with windowing to reduce the “leakage” or spreading of the fundamental, to get a close approximation of the performance parameters.
- Page 6 DEMO MANUAL DC1501A DC1501A MISCELLANEOUS DIP SWITCHES AND JUMPERS Defi nitions OB/2CL- Selects offset binary or two’s complement data format for ADC output word. The default is offset J2- -INPUT sets the bias point for the –input of U2A. The binary.
-
Page 7: Parts List
DEMO MANUAL DC1501A PARTS LIST ITEM QUANTITY REFERENCE DESIGNATOR DESCRIPTION MANUFACTURERS PART NUMBER REQUIRED CIRCUIT COMPONENTS: C1, C9, C39, C52, C54, C55 CAP ., 0603 (opt.) CAP ., NP0, 2200pF, 25V, 5% 1206 AVX, 12063A222JAT2A C4, C5, C7, C12, C16, CAP ., X7R, 1μF, 16V, 10% 0603 AVX, 0603YC105KAT2A C23-C25, C33, C36, C41... - Page 8 DEMO MANUAL DC1501A PARTS LIST ITEM QUANTITY REFERENCE DESIGNATOR DESCRIPTION MANUFACTURERS PART NUMBER REQUIRED CIRCUIT COMPONENTS: R51, R52 RES., Chip, 49.9, 1/16W, 1% 0402 Vishay, CRCW040249R9FKED RES., Chip, 10k, 1/10W, 5% 0603 Vishay, CRCW060310K0JNEA Switch, 219-4MST, CTS Electronic Components, 219-4MST IC., LT1807CMS8 MSOP-8 Linear Tech., LT1807CMS8#TRPBF IC., 24LC025 TSSOP-8...
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Page 9: Schematic Diagram
DEMO MANUAL DC1501A SCHEMATIC DIAGRAM dc1501A... - Page 10 DEMO MANUAL DC1501A SCHEMATIC DIAGRAM dc1501A...
- Page 11 DEMO MANUAL DC1501A SCHEMATIC DIAGRAM dc1501A...
- Page 12 DEMO MANUAL DC1501A PCB LAYOUT AND FILM Top Silkscreen Top Solder Paste dc1501A...
- Page 13 DEMO MANUAL DC1501A PCB LAYOUT AND FILM Top Solder Mask Layer 1 - Top Layer dc1501A...
- Page 14 DEMO MANUAL DC1501A PCB LAYOUT AND FILM Layer 2 - GND Plane 1 Layer 3 - GND Plane 2 dc1501A...
- Page 15 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.
- Page 16 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.
- Page 17 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Analog Devices Inc. DC1501A-C DC1501A-B...
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