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dc1565afa
DEMO MANUAL DC1565A
Description
LTC2153-14, LTC2153-12,
LTC2152-14, LTC2152-12,
LTC2151-14, LTC2151-12,
LTC2150-14, LTC2150-12
12-Bit/14-Bit, 170Msps to 310Msps ADCs
Demonstration circuit 1565A supports a family of
12‑Bit/14‑Bit 170Msps to 310Msps ADCs. Each assem‑
bly features one of the following devices: LTC2153‑14/
LTC2153‑12, LTC2152‑14/LTC2152‑12, LTC2151‑14/
LTC2151‑12, LTC2150‑14/LTC2150‑12, high speed ADCs.
The versions of the 1565A demo board are listed in Table1.
Depending on the required resolution and sample rate,
the DC1565A is supplied with the appropriate ADC. The
L, LT, LTC, LTM, µModule, 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.
circuitry on the analog inputs is optimized for analog input
frequencies from 5MHz to 140MHz. 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
Table 1. DC1565A Variants
DC1565A VARIANTS ADC PART NUMBER RESOLUTION MAXIMUM SAMPLE RATE INPUT FREQUENCY
1565A‑A LTC2152‑14 14‑Bit 250Msps 5MHz to 140MHz
1565A‑B LTC2151‑14 14‑Bit 210Msps 5MHz to 140MHz
1565A‑C LTC2150‑14 14‑Bit 170Msps 5MHz to 140MHz
1565A‑D LTC2152‑12 12‑Bit 250Msps 5MHz to 140MHz
1565A‑E LTC2151‑12 12‑Bit 210Msps 5MHz to 140MHz
1565A‑F LTC2150‑12 12‑Bit 170Msps 5MHz to 140MHz
1565A‑G LTC2153‑14 14‑Bit 310Msps 5MHz to 140MHz
1565A‑H LTC2153‑12 12‑Bit 310Msps 5MHz to 140MHz
perForMAnce sUMMArY
(T
A
= 25°C)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Supply Voltage – DC1565A Depending on Sampling Rate and the A/D Converter
Provided, This Supply Must Provide Up to 500mA.
3 3.6 6 V
Analog Input Range Depending on SENSE Pin Voltage 1.5 or 1.32 V
P‑P
Logic Input Voltages Minimum Logic High
Maximum Logic Low
1.3
0.6
V
V
Logic Output Voltages (Differential) Nominal Logic Levels (100Ω Load, 3.5mA Mode)
Common Mode
Minimum Logic Levels (100Ω Load, 3.5mA Mode)
Common Mode
350
1.25
247
1.25
mV
V
mV
V
Sampling Frequency (Convert Clock Frequency) See Table 1
Encode Clock Level Differential Encode Mode (ENC
–
Not Tied to GND) 0.2 1.9 V
Resolution See Table 1
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dc1565afa
DEMO MANUAL DC1565A
TO PROVIDED
USB CABLE
TO PROVIDED
POWER SUPPLY
CHANNEL 1
PARALLEL/SERIAL
SINGLE-ENDED ENCODE CLOCK
(USE A LOW JITTER SIGNAL GENERATOR
WITH PROPER FILTERING)
dc1565a F01
3.6V TO 6V
qUick stArt proceDUre
Figure 1. DC1565 Setup
Demonstration circuit 1565A is easy to set up to evaluate
the performance of the LTC2152 A/D converter family. Refer
to Figure 1 for proper measurement equipment setup and
follow the procedure below:
Setup
If a DC1371 Data Acquisition and Collection System was
supplied with the DC1565A demonstration circuit, fol‑
low the DC1371 Quick Start Guide to install the required
software and for connecting the DC1371 to the DC1565A
and to a PC.
DC1565A Demonstration Circuit Board Jumpers
The DC1565A demonstration circuit board should have
the following jumper settings as default positions: (as
per Figure 1)
JP2 PAR/SER: Selects parallel or serial programming
mode. (default ‑ serial)
perForMAnce sUMMArY
(T
A
= 25°C)
Input Frequency Range See Table 1
SFDR See Applicable Data Sheet
SNR See Applicable Data Sheet