LTC1096IS8 Linear Technology, LTC1096IS8 Datasheet - Page 18

• Manufacturer Part Number: LTC1096IS8
• Description: IC A/D CONV 8BIT SRL IN/OUT8SOIC
• Manufacturer: Linear Technology

Specifications of LTC1096IS8

• Number Of Bits: 8
• Sampling Rate (per Second): 33k
• Data Interface: Serial
• Number Of Converters: 1
• Power Dissipation (max): 600µW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LTC1096/LTC1096L
LTC1098/LTC1098L
APPLICATIONS INFORMATION
Multiplexer (MUX) Address
The bits of the input word following the START bit assign
the MUX confi guration for the requested conversion. For
a given channel selection, the converter will measure the
voltage between the two channels indicated by the “+”
and “–” signs in the selected row of the followintg tables.
In single-ended mode, all input channels are measured
with respect to GND.
MSB-First/LSB-First (MSBF)
The output data of the LTC1098(L) is programmed for
MSB-fi rst or LSB-fi rst sequence using the MSBF bit.
When the MSBF bit is a logical one, data will appear on
the D
fi lled in indefi nitely following the last data bit. When the
MSBF bit is a logical zero, LSB-fi rst data will follow the
normal MSB-fi rst data on the D
Sequence)
18
SINGLE-ENDED MUX MODE
DIFFERENTIAL MUX MODE
OUT
line in MSB-fi rst format. Logical zeros will be
LTC1098(L) Channel Selection
SGL/DIFF
MUX ADDRESS
1
1
0
0
ODD/SIGN
OUT
0
1
0
1
line. (see Operating
0
+
+
–
CHANNEL #
1
+
–
+
10968 AI03
GND
–
–
Unipolar Transfer Curve
The LTC1096(L)/LTC1098(L) are permanently confi gured
for unipolar only. The input span and code assignment for
this conversion type are shown in the following fi gures
for a 5V reference.
Operation with D
The LTC1098(L) can be operated with D
together. This eliminates one of the lines required to com-
municate to the microprocessor (MPU). Data is transmit-
ted in both directions on a single wire. The processor pin
connected to this data line should be confi gurable as either
an input or an output. The LTC1098(L) will take control of
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 0
0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0
•
•
•
OUTPUT CODE
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 0
0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0
•
•
•
IN
Unipolar Transfer Curve
Unipolar Output Code
and D
INPUT VOLTAGE
V
V
REF
REF
1LSB
OUT
0V
– 1LSB
– 2LSB
•
•
•
Tied Together
INPUT VOLTAGE
(V
REF
4.9805V
4.9609V
0.0195V
= 5.000V)
0V
IN
•
•
•
and D
10968 AI05
OUT
10968 AI04
10968fc
tied
V
IN