LTC1094CN Linear Technology, LTC1094CN Datasheet - Page 15

• Manufacturer Part Number: LTC1094CN
• Description: IC DATA ACQ SYS 10BIT 8CH 20-DIP
• Manufacturer: Linear Technology
• Type: Data Acquisition System (DAS), ADCr

Specifications of LTC1094CN

• Resolution (bits): 10 b
• Data Interface: Serial
• Voltage Supply Source: Dual ±
• Voltage - Supply: 4.5 V ~ 10 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 20-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Sampling Rate (per Second): -

MSB-First/LSB-First (MSBF)
The output data of the LTC1091/LTC1093/LTC1094 is
programmed for MSB-first or LSB-first sequence using
the MSBF bit. When the MSBF bit is a logical one, data will
appear on the D
will be filled in indefinitely following the last data bit to
accommodate longer word lengths required by some
microprocessors. When the MSBF bit is a logical zero,
LSB-first data will follow the normal MSB-first data on the
D
Unipolar/Bipolar (UNI)
The UNI bit of the LTC1093/LTC1094 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 voltage. When UNI is a logical zero, a bipolar
conversion will result. The input span and code assign-
ment for each conversion type are shown in the figures
below.
The LTC1091/LTC1092 are permanently configured for
unipolar mode.
A
OUT
PPLICATI
line. (See operating sequence).
OUT
O
line in MSB-first format. Logical zeros
U
–V
REF
S
–V
REF
I FOR ATIO
+ 1LSB
U
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 1
0 0 0 0 0 0 0 0 0 0
Bipolar Transfer Curve (UNI = 0) LTC1093/LTC1094 Only
W
0V
Unipolar Transfer Curve (UNI = 1)
0 1 1 1 1 1 1 1 1 1
0 1 1 1 1 1 1 1 1 0
0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0
1LSB
–2LSB
U
–1LSB
1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 0
1 0 0 0 0 0 0 0 0 1
1 0 0 0 0 0 0 0 0 0
1LSB
V
Bipolar Output Code (UNI = 0) LTC1093/LTC1094 Only
Unipolar Output Code (UNI = 1)
REF
0 1 1 1 1 1 1 1 1 1
0 1 1 1 1 1 1 1 1 0
0 0 0 0 0 0 0 0 0 1
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 1 1 1 0
1 0 0 0 0 0 0 0 0 1
1 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 1 1 1 0
0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0
OUTPUT CODE
– 2LSB
OUTPUT CODE
V
REF
•
•
•
•
•
•
– 1LSB
•
•
•
V
REF
V
REF
1091-4 AI11
INPUT VOLTAGE
– 2LSB
–(V
LTC1093/LTC1094
INPUT VOLTAGE
LTC1091/LTC1092
V
V
V
V
V
V
IN
REF
REF
REF
REF
REF
REF
–(V
–1LSB
–2LSB
1LSB
1LSB
– 1LSB
0V
0V
– 1LSB
– 2LSB
) + 1LSB
– 1LSB
– 2LSB
•
•
•
•
•
•
REF
•
•
•
V
)
REF
1091-4 AI12
INPUT VOLTAGE
INPUT VOLTAGE
V
(V
(V
IN
–0.0098V
–0.0195V
–4.9902V
–5.000V
4.9902V
4.9805V
0.0098V
4.9951V
4.9902V
0.0049V
REF
REF
0V
0V
•
•
•
•
•
•
•
•
•
= 5V)
= 5V)
1091-4AI14
1091-4AI13
15