LTC2418CGN Linear Technology, LTC2418CGN Datasheet - Page 15

• Manufacturer Part Number: LTC2418CGN
• Description: IC ADC 24BIT DIFF INPUT 28SSOP
• Manufacturer: Linear Technology

Specifications of LTC2418CGN

• Number Of Bits: 24
• Sampling Rate (per Second): 7.5
• Data Interface: MICROWIRE™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 1mW
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP (0.150", 3.95mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

APPLICATIO S I FOR ATIO
Table 2. Channel Selection for the LTC2418
* 0
*Default at power up
Output Data Format
The LTC2414/LTC2418 serial output data stream is 32 bits
long. The first 3 bits represent status information indicat-
ing the sign and conversion state. The next 23 bits are the
conversion result, MSB first. The next 5 bits (Bit 5 to Bit 1)
SGL
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
MUX ADDRESS
ODD/
SIGN
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
A2 A1 A0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
U
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
U
IN
IN
IN
0
+
–
+
IN
IN
IN
1
–
+
+
W
IN
IN
IN
2
+
–
+
IN
IN
IN
3
–
+
+
U
IN
IN
IN
4
+
–
+
IN
IN
IN
5
–
+
+
IN
IN
IN
6
indicate which channel the conversion just performed was
selected. The address bits programmed during this data
output phase select the input channel for the next conver-
sion cycle. These address bits are output during the sub-
sequent data read, as shown in Figure 3b. The last bit is a
+
–
+
CHANNEL SELECTION
IN
IN
IN
7
–
+
+
IN
IN
IN
8
+
–
+
IN
IN
IN
9
–
+
+
LTC2414/LTC2418
IN
IN
IN
10
+
–
+
IN
IN
IN
11
–
+
+
IN
IN
IN
12
+
–
+
IN
IN
IN
13
–
+
+
IN
IN
IN
14
+
–
+
IN
IN
IN
15
–
+
+
15
241418fa
COM
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–