LTC8143 Linear Technology Corporation, LTC8143 Datasheet - Page 7

• Manufacturer Part Number: LTC8143
• Description: Ltc8143 - Improved Industry Standard Serial 12-bit Multiplying Dacs
• Manufacturer: Linear Technology Corporation

TYPICAL APPLICATIONS
(LOGIC INPUTS
OMITTED FOR
0.1 F
–10V TO 10V
CLARITY)
V
REF
DGND
V
5V
DD
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
14
12
1111
1000
1000
0111
0000
MSB
BINARY NUMBER IN
U
DIGITAL INPUT
DAC REGISTER
LTC7543
LTC8143
V
REF
15
1111
0000
0000
1111
0000
Bipolar Operation (4-Quadrant Multiplication)
Bipolar Offset Binary Code Table
AGND
R
FB
16
3
1111
0001
0000
1111
0000
LSB
OUT 1
OUT 2
1
2
V
V
0V
– V
– V
REF
REF
REF
REF
33pF
ANALOG OUTPUT
(2047/2048)
(1/2048)
(1/2048)
(2048/2048) = – V
–
+
LT1112
1/2
V
OUT
REF
10k
R1
R2
20k
LTC7543/LTC8143
–
+
LT 1112
1/2
20k
R3
7543/8143 TA04
V
OUT
7