DESCRIPTION
DEMO MANUAL DC2403A
LT6200
Rail-to-Rail SAR ADC
Driver Amplifier
Demonstration circuit 2403A features the LT®6200 ampli-
fier. The DC2403A includes two of these amplifiers and is
designed to drive the inputs of the DC2290A demo board.
®
The DC2290A features the LTC
2387 18-bit, 15Msps
high speed SAR ADC. The linearity and low noise of the
–5V +10V
LT6200 make it an ideal candidate to drive the LTC2387
at frequencies up to 1MHz. See Table 1.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2403A
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.
FROM
DIFFERENTIAL
SOURCE
Table 1. DC2290A (LTC2387 Family) Driver Board
INPUT FREQUENCY DRIVE BOARD AMPLIFIER
Up to 8kHz DC2402 LT6237
Up to 1MHz DC2403 LT6200
>1MHz Contact Factory Contact Factory
TO DC2290A
Figure 1. DC2403A Connection Diagram
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DEMO MANUAL DC2403A
QUICK START PROCEDURE
Connect the DC2403A to a DC2290A using the two output
SMA connectors J2, J4. Connect the +10V and –5V DC
supplies to the turrets on the DC2403A.
HARDWARE SETUP
SIGNAL CONNECTIONS
J1 +IN. This is the positive signal input.
J3 –IN. This is the negative signal input.
J4 –OUT. This is the negative signal output.
J2 +OUT. This is the positive signal output.
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
1 6 C4, C6, C14, C16, C21, C23 CAP., TANT, 10µF, 16V, 20%, 0805 VISHAY, 298D106X0016R2T
2 2 C3, C5 CAP., X5R, 1µF, 16V, 10%, 0603 AVX, 0603YD105KAT2A
3 2 C1, C2 CAP., X5R, 22µF, 16V 10%, 1210 AVX, 1210YD226K AT2A
4 4 C7, C9, C20, C22 CAP., X5R, 0.1µF, 16V 10% 0402 AVX, 0402YD104K AT2A
5 1 C13 CAP., X7R, 0.01µF, 6.3V 10%, 0603 MURATA, GRM188R70J103KA01D
6 2 C8, C11 CAP., NPO, 1000pF, 16V, 5%, 1206 AVX, 1206YA 102JAT2A
7 2 E4, E5 TEST POINT, TURRET, .064" MILL MAX, 2308-2-00-80-00-00-07-0
8 3 E1, E2, E3 TEST POINT, TURRET, .094" MILL-MAX, 2501-2-00-80-00-00-07-0
9 2 J1, J3 CONN, SMA, 50Ω, EDGE-LAUNCH, FEMALE E.F. JOHNSON, 142-0701-851
10 2 J2, J4 CONN, SMA, 50Ω, EDGE-LAUNCH, MALE E.F. JOHNSON, 142-0801-811
11 2 R5, R9 RES., 24.9Ω, 1/10W, 1% 0603 PANASONIC, ERJ-3EKF24R9V
12 2 R7, R11 RES., 15.0Ω, 1/10W, 1% 0603 PANASONIC, ERJ-3EKF15R0V
13 1 R4 RES., 5.11kΩ, 1/10W, 1% 0603 PANASONIC, ERJ-3EKF5111V
14 2 R1, R3 RES., 1.00kΩ, 1/10W, 1% 0603 PANASONIC, ERJ-3EKF1001V
15 1 R2 RES., 1.05kΩ, 1/10W, 1% 0603 PANASONIC, ERJ-3EKF1051V
16 1 U2 IC, MICROPOWER REGULATOR, SO8 LINEAR TECH., LT1763CS8#PBF
17 2 U3, U4 IC, 400MHz AMPLIFIER, MS8 LINEAR TECH., LT6200CS8#PBF
18 1 U1 IC, MICROPOWER NEG. REGULATOR, SOT-23 LINEAR
TECH., LT1964ES5-SD#PBF
2
dc2403afa
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