Linear Technology DC1281A Demo Manual

DESCRIPTION
Demonstration circuit 1281A supports a family of 16-
bit 160Msps/180Msps/185Msps ADCs. Each assem-
bly features one of the following devices: LTC
LTC2209#3BC, or LTC2209#3CD high speed, high dynamic
range ADC.
Other members of this family include the LTC2208 which
is a 130Msps 16-bit version of this device. The LTC2208 is
supported on the DC854 (CMOS) and the DC996 (LVDS).
Lower speed, single-ended clock versions are also sup-
ported on the DC918 and DC919.
Table 1. DC1281A Variants
DC1281A VARIANTS ADC PART NUMBER
1281A-A
1281A-B
1281A-E LTC2209#3BCPBF
1281A-F LTC2209#3BCPBF
1281A-G LTC2209#3CDPBF
1281A-H LTC2209#3CDPBF
PERFORMANCE SUMMARY
PARAMETER
Supply Voltage – LTC2209
Supply Voltage – LTC2209#3BC
and LTC2209#3CD
Analog Input Range
Logic Input Voltages
Logic Output Voltages (Differential) Nominal Logic Levels (100Ω Load)
Sampling Frequency (Convert
Clock Frequency)
Convert Clock Level
Resolution
Input Frequency Range
SFDR
SNR
® 2209,
RESOLUTION
LTC2209 16-Bit
LTC2209 16-Bit
16-Bit
16-Bit
16-Bit
16-Bit
(T = 25°C)
A
CONDITION
Depending on Sampling Rate and the A/D Converter Provided, This Supply Must
Provide Up to 700mA.
Depending on Sampling Rate and the A/D Converter Provided, This Supply Must
Provide Up to 700mA.
Depending on PGA Pin Voltage
Minimum Logic High
Maximum Logic Low
Minimum Logic Levels (100Ω Load)
See Table 1
50Ω Source Impedance, AC-Coupled or Ground Referenced (Convert Clock Input Is
Capacitor Coupled on Board and Terminated with 50Ω).
See Table 1
See Table 1
See Applicable Data Sheet
See Applicable Data Sheet
DEMO MANUAL DC1281A
16-Bit, 160Msps/180Msps/
Several versions of the 1281A demo board supporting
the LTC2209 16-bit series of A/D converters are listed in
Table 1. Depending on the required resolution, sample rate
and input frequency, the DC1281A is supplied with the
appropriate ADC and with an optimized input circuit. The
circuitry on the analog inputs is optimized for analog input
frequencies below 80MHz or from 80MHz to 160MHz. For
higher input frequencies, contact the factory for support.
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; QuikEval
and PScope are trademarks of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
MAXIMUM SAMPLE RATE INPUT FREQUENCY
160Msps 1MHz to 80MHz
160Msps 80MHz to 160MHz
180Msps 1MHz to 80MHz
180Msps 80MHz to 160MHz
185Msps 1MHz to 80MHz
185Msps 80MHz to 160MHz
LTC2209
185Msps ADCs
SUPPLY VOLTAGE
3.3V
3.3V
3.6V
3.6V
3.6V
3.6V
VALUE
Optimized for 3.3V
[3.15V⇔3.45V min/max]
Optimized for 3.6V
[3.5V⇔3.78V min/max]
1.5V to 2.25V
P-P P-P
2V
0.8V
350mV/2.1V Common Mode
247mV/2.1V Common Mode
⇔2.5V
2V Sine Wave or
P-P P-P
Square wave
dc1281af
1