1
dc2623af
DEMO MANUAL DC2623A
DESCRIPTION
LTC6404-1
Rail-to-Rail SAR ADC
Driver Amplifier
Demonstration circuit 2623A features the
LTC
®
6404-1
amplifier. The DC2623A includes two of these amplifiers
and is designed to drive the inputs of the DC2290 demo
board. The DC2290 features the LTC
®
2387 18-bit, 15Msps
high speed SAR ADC. The linearity and low noise of the
LTC6404-1 make it an ideal candidate to drive the LTC2387
at frequencies above 1MHz. See Table 1.
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Analog
Devices, Inc. All other trademarks are the property of their respective owners.
Note: The DC2623A is configured to provide a voltage gain
of 4 from either a single-ended source or a differential one.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2623A
Figure 1. DC2623A Connection Diagram
Table 1. DC2290 (LTC2387 Family) Driver Boards
INPUT FREQUENCY
DRIVER BOARD
AMPLIFIER
Up to 8kHz
DC2402
LT6237
Up to 1MHz
DC2403
LT6200
>1MHz
Lowest Noise: DC2622
Lowest Distortion: DC2623
ADA4899
LTC6404-1 + AD8002
–5V
+10V
TO DC2290
FROM
DIFFERENTIAL
SOURCE
