LTC1597BIN(RevA) View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC1597BIN
(Rev.:RevA)
(Rev.:RevA)
Linear Technology
LTC1597BIN Datasheet PDF : 20 Pages
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APPLICATIONS INFORMATION
LTC1591/LTC1597
VREF
+
1/2 LT1112
–
5V
0.1μF
3
2
1
23 4
5
R1
RCOM
REF VCC ROFS
RFB
14
DATA
INPUTS
R1
R2
LTC1591-1
ROFS RFB
14-BIT DAC
IOUT1 6
AGND 7
10 TO 21,
24, 25
WR LD CLR
WR
9 8 28
LD
CLR
NC NC
26 27
22
DGND
33pF
–
1/2 LT1112
+
Bipolar Offset Binary Code Table
VOUT =
–VREF
TO VREF
DIGITAL INPUT
BINARY NUMBER
IN DAC REGISTER
MSB
LSB
1111 1111 1111 11
1000 0000 0000 01
1000 0000 0000 00
0111 1111 1111 11
0000 0000 0000 00
ANALOG OUTPUT
VOUT
VREF (8,191/8,192)
VREF (1/8,192)
0V
–VREF (1/8,192)
–VREF
1591/97 F02a
Figure 2a. Bipolar Operation (4-Quadrant Multiplication) VOUT = – VREF to VREF
VREF
+
1/2 LT1112
–
5V
0.1μF
3
2
1
23 4
5
R1
RCOM
REF VCC ROFS
RFB
16
DATA
INPUTS
R1
R2
LTC1597-1
ROFS RFB
16-BIT DAC
IOUT1 6
AGND 7
10 TO 21,
24 TO 27
WR LD CLR
WR
9 8 28
LD
CLR
22
DGND
33pF
–
1/2 LT1112
+
VOUT =
–VREF
TO VREF
Bipolar Offset Binary Code Table
DIGITAL INPUT
BINARY NUMBER
IN DAC REGISTER
MSB
LSB
1111
1000
1000
0111
0000
1111
0000
0000
1111
0000
1111
0000
0000
1111
0000
1111
0001
0000
1111
0000
ANALOG OUTPUT
VOUT
VREF (32,767/32,768)
VREF (1/32,768)
0V
–VREF (1/32,768)
–VREF
1591/97 F02b
Figure 2b. Bipolar Operation (4-Quadrant Multiplication) VOUT = – VREF to VREF
15917fa
15
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