LTC1296DCSW Linear Technology, LTC1296DCSW Datasheet - Page 11

• Manufacturer Part Number: LTC1296DCSW
• Description: IC DATA ACQ SYSTEM 12BIT 20-SOIC
• Manufacturer: Linear Technology
• Type: Data Acquisition System (DAS), ADCr

Specifications of LTC1296DCSW

• Resolution (bits): 12 b
• Sampling Rate (per Second): 46.5k
• Data Interface: Serial, Parallel
• Voltage Supply Source: Dual ±
• Voltage - Supply: ±5V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: LTC1296DCS

Table 1a. LTC1294/6 Multiplexer Channel Selection
SGL/
DIFF
Unipolar/Bipolar (UNI)
The UNI bit determines whether the conversion will be
unipolar or bipolar. When UNI is a logical one, a unipolar
conversion will be performed on the selected input volt-
A
SGL/
Table 1b. LTC1293 Channel Selection
DIFF
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
PPLICATI
MUX ADDRESS
MUX ADDRESS
SIGN
ODD
1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 0
0 0 0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0 0 0
SIGN
ODD
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
OUTPUT CODE
Unipolar Transfer Curve (UNI = 1)
SELECT
SELECT
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
1 0
•
•
•
1 0
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
O
DIFFERENTIAL CHANNEL SELECTION
U
0
+
–
INPUT VOLTAGE
0
+
–
S
V
V
DIFFERENTIAL CHANNEL SELECTION
REF
REF
–
+
1
1LSB
0V
– 1LSB
– 2LSB
I FOR ATIO
•
•
•
–
+
U
1
+
–
2
Not Used
Not Used
2
+
–
INPUT VOLTAGE
–
+
3
(VREF = 5V)
4.9988V
4.9976V
0.0012V
W
3
–
+
0V
•
•
•
4
+
–
LTC1293 AI03a
4
+
–
–
+
5
U
5
–
+
+
–
6
1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 0
0 0 0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0 0 0
SGL/
DIFF
7
–
+
1
1
1
1
1
1
1
1
MUX ADDRESS
SIGN
ODD
•
•
•
SGL/
DIFF
0
0
0
0
1
1
1
1
age. When UNI is a logical zero, a bipolar conversion will
result. The input span and code assignment for each
conversion type are shown in the figures below:
1
1
1
1
1
1
1
1
MUX ADDRESS
SELECT
SIGN
ODD
1 0
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
0
0
0
0
1
1
1
1
LTC1293/LTC1294/LTC1296
SELECT
Unipolar Output Code (UNI = 1)
1 0
0
0
1
1
0
0
1
1
0
+
0
1
0
1
0
1
0
1
SINGLE-ENDED CHANNEL SELECTION
1
+
0
+
SINGLE-ENDED CHANNEL SELECTION
+
1
2
+
Not Used
Not Used
2
+
3
+
3
+
4
+
+
4
+
5
+
5
+
6
COM
–
–
–
–
–
–
+
LTC1293 AI03b
7
11
129346fs
V
COM
IN
–
–
–
–
–
–
–
–