LTC2400 Linear Technology, LTC2400 Datasheet - Page 38

• Manufacturer Part Number: LTC2400
• Description: 24-Bit uPower No Latency ADC in SO-8
• Manufacturer: Linear Technology

LTC2400
The performance of the LTC2400 can be verified using the
demonstration board DC228, see Figure 42 for the sche-
matic. This circuit uses the computer’s serial port to
generate power and the SPI digital signals necessary for
starting a conversion and reading the result. It includes a
Labview application software program (see Figure 43)
TYPICAL APPLICATIONS
38
GROUND
V
REFOUT
V
INPUT
REFIN
J2
J1
J3
J4
NOTES: UNLESS OTHERWISE SPECIFIED
INSTALL SHUNTS ON PIN 2 AND 3 OF JP1 AND JP2
EXTERNAL
REF
10 F
10 F
C1
C2
1
JP2 ONBOARD
2 3
REF
C3
10 F
U
1
2
3
4
V
V
V
GND
Figure 42. 24-Bit A/D Demo Board Schematic
CC
REF
IN
LTC2400
U1
SDO
50Hz
SCK
CS
F
O
Figure 43. Display Graphic
1
8
7
6
5
JP1
5V
2 3 60Hz
12
9
4
6
LT1236ACS8-5
OUT
74HC14
74HC14
74HC14
0.1 F
GND
U3-2
U3-4
U3-6
8
13 10
U2
C4
which graphically captures the conversion results. It can
be used to determine noise performance, stability, and
with an external source, linearity. As exemplified in the
schematic, the LTC2400 is extremely easy to use. This
demonstration board and associated software is available
by contacting Linear Technology.
3
4
IN
2
5
2
74HC14
74HC14
74HC14
U3-1
U3-3
U3-5
11
1
6
C6
22 F
+
51k
51k
R1
R2
C5
100 F
16V
100
R3
SCLKDTR
DOUTCTS
CSRTS
BAV74LT1
D1
J6
EXT V
8V TO 15V
1
6
2
7
3
8
4
9
5
+
DB9
J5
2400 F42