DC918C-D

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 918
16/14 BIT 40 TO 105 MSPS ADC
1
LTC2207, LTC2207-14, LTC2206, LTC2206-14, LTC2205, LTC2205-14,
LTC2204
DESCRIPTION
Demonstration circuit 918 supports members of a
family of 16/14 BIT 130 MSPS ADCs. Each assem-
bly features one of the following devices: LTC2207,
LTC2207-14, LTC2206, LTC2206-14, LTC2205,
LTC2205-14, or LTC2204 high speed, high dynamic
range ADCs.
Other members of this family include the LTC2208
16-Bit 130Msps ADC with LVDS outputs, as well as
the LTC2203 and LTC2202 which are 16-Bit 25Msps
and 10Msps single-ended clock versions. These
7x7mm QFN devices are supported by Demonstra-
tion Circuit 919 (for single-ended clock input).
Several versions of the 918C demo board support-
ing the LTC2207 16-Bit and LTC2207-14 14-Bit se-
ries of A/D converters are listed in Table 1. De-
pending on the required resolution, sample rate and
input frequency, the DC918 is supplied with the ap-
propriate ADC and with an optimized input circuit.
The circuitry on the analog inputs is optimized for
analog input frequencies below 70MHz or from
70MHz to 140MHz. For higher input frequencies,
contact the factory for support.
Design files for this circuit board are available.
Call the LTC factory.
LTC is a trademark of Linear Technology Corporation
Table 1.
DC918C Variants
DC918 VARIANTS ADC PART NUMBER RESOLUTION* MAXIMUM SAMPLE RATE INPUT FREQUENCY
918C-A LTC2207 16-Bit 105Msps 1MHz - 70MHz
918C-B LTC2207 16-Bit 105Msps 70MHz -140MHz
918C-C LTC2206 16-Bit 80Msps 1MHz - 70MHz
918C-D LTC2206 16-Bit 80Msps 70MHz -140MHz
918C-E LTC2205 16-Bit 65Msps 1MHz - 70MHz
918C-F LTC2205 16-Bit 65Msps 70MHz -140MHz
918C-G LTC2204 16-Bit 40Msps 1MHz - 70MHz
918C-H LTC2207-14 14-Bit 105Msps 1MHz - 70MHz
918C-I LTC2207-14 14-Bit 105Msps 70MHz -140MHz
918C-J LTC2206-14 14-Bit 80Msps 1MHz - 70MHz
918C-K LTC2206-14 14-Bit 80Msps 70MHz -140MHz
918C-L LTC2205-14 14-Bit 65Msps 1MHz - 70MHz
QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 918
16/14 BIT 40 TO 105 MSPS ADC
2
Table 2.
Performance Summary (T
A
= 25°C)
PARAMETER CONDITION VALUE
Supply Voltage
Depending on sampling rate and the A/D converter provided,
this supply must provide up to 500mA.
Optimized for 3.3V
[3.15V 3.45V min/max]
Analog input range Depending on PGA Pin Voltage 1.5V
PP
to 2.25V
PP
Minimum Logic High 2.4V
Logic Input Voltages
Maximum Logic Low 0.8V
Minimum Logic High @ -1.6mA 2.3V (33Series terminations) Logic Output Voltage
(74VCX245 output buffer, V
cc
= 2.5V)
Maximum Logic Low @ 1.6mA 0.7V (33 Series terminations)
Sampling Frequency (Convert Clock Frequency) See Table 1
Convert Clock Level 50 Source Impedance, AC coupled or ground referenced
(Convert Clock input is capacitor coupled on board and ter-
minated with 50.)
2V
P-P
2.5V
P-P
Sine Wave
or Square wave
Resolution See Table 1
Input frequency range See Table 1
SFDR See Applicable Data Sheet
SNR See Applicable Data Sheet
QUICK START PROCEDURE
Demonstration circuit 918 is easy to set up to evalu-
ate the performance of the LTC2207/LTC2207-14,
LTC2206/LTC2206-14, LTC2205/LTC2205-14,
LTC2204 A/D converters. Refer to Figure 1 for proper
measurement equipment setup and follow the proce-
dure below:
SETUP
If a DC718 QuickDAACS Data Analysis and Collection
System was supplied with the DC918 demonstration
circuit, follow the DC718 Quick Start Guide to install
the required software and for connecting the DC718 to
the DC918 and to a PC running Windows98, 2000 or
XP.
QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 918
16/14 BIT 40 TO 105 MSPS ADC
3
DC918DEMONSTRATION CIRCUIT BOARD JUMPERS
The DC918 demonstration circuit board
should have the following jumper set-
tings as default: (as per figure 1)
JP1: Output clock polarity: GND
JP2: SENSE: VDD, (Internal reference)
JP3: PGA: GND 2.25V range
JP4: RAND: GND Not randomized
JP5: SHDN: GND Not Shutdown
JP6: DITH: GND No internal dithering

DC918C-D

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
Data Conversion IC Development Tools LTC2206 - CMOS OUT, 80Msps, 16-Bit ADC
Lifecycle:
New from this manufacturer.
Delivery:
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