LTC1446CS8 Linear Technology, LTC1446CS8 Datasheet - Page 9

• Manufacturer Part Number: LTC1446CS8
• Description: IC D/A CONV 12BIT R-R DUAL 8SOIC
• Manufacturer: Linear Technology

Specifications of LTC1446CS8

• Settling Time: 14µs
• Number Of Bits: 12
• Data Interface: Serial
• Number Of Converters: 2
• Voltage Supply Source: Single Supply
• Power Dissipation (max): 5mW
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

This circuit shows how to use an LTC1446 and an
LT
with an offset that can be digitally programmed. V
which can be set by loading the appropriate digital code
TYPICAL APPLICATIONS
®
1077 to make a wide bipolar output swing 12-bit DAC
A Wide Swing, Bipolar Output DAC with Digitally Controlled Offset
P
V
U
OUT
–4.096
–8.190
8.190
4.094
0
N
CLK
D
CS/LD
D
IN
OUT
LTC1446
OUT A
V
V
OUT B
OUT A
GND
A: V
B: V
C: V
V
CC
,
OUT A
OUT A
OUT A
for DAC A, sets the offset. As this value changes, the
transfer curve for the output moves up and down as
illustrated in the graph below.
5V
0V
2.048V
4.095V
50k
50k
100k
0.1 F
A
B
C
1446/46L F02
+
–
LT1077
–15V
15V
100k
D
IN
LTC1446/LTC1446L
V
2 (V
OUT
OUT B
=
– V
OUT A)
9