Datasheet
LTC1665/LTC1660
18
166560fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 1999
LT 0112 REV A • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER DESCRIPTION COMMENTS
LTC1661 Dual 10-Bit V
OUT
DAC in 8-Lead MSOP Package V
CC
= 2.7V to 5.5V Micropower Rail-to-Rail Output
LTC1663 Single 10-Bit V
OUT
DAC in SOT-23 Package V
CC
= 2.7V to 5.5V, Internal Reference, 60μA
LTC1446/
LTC1446L
Dual 12-Bit V
OUT
DACs in SO-8 Package with Internal Reference LTC1446: V
CC
= 4.5V to 5.5V, V
OUT
= 0V to 4.095V
LTC1446L: V
CC
= 2.7V to 5.5V, V
OUT
= 0V to 2.5V
LTC1448 Dual 12-Bit V
OUT
DAC in SO-8 Package V
CC
= 2.7V to 5.5V, External Reference Can Be Tied to V
CC
LTC1454/
LTC1454L
Dual 12-Bit V
OUT
DACs in SO-16 Package with Added Functionality LTC1454: V
CC
= 4.5V to 5.5V, V
OUT
= 0V to 4.095V
LTC1454L: V
CC
= 2.7V to 5.5V, V
OUT
= 0V to 2.5V
LTC1458/
LTC1458L
Quad 12-Bit Rail-to-Rail Output DACs with Added Functionality LTC1458: V
CC
= 4.5V to 5.5V, V
OUT
= 0V to 4.095V
LTC1458L: V
CC
= 2.7V to 5.5V, V
OUT
= 0V to 2.5V
LTC1590 Dual 12-Bit I
OUT
DAC in SO-16 Package V
CC
= 4.5V to 5.5V, 4-Quadrant Multiplication
LTC1659 Single Rail-to-Rail 12-Bit V
OUT
DAC in 8-Lead MSOP Package
V
CC
: 2.7V to 5.5V
Low Power Multiplying V
OUT
DAC. Output Swings from GND to
REF. REF Input Can Be Tied to V
CC
LT1460 Micropower Precision Series Reference, 2.5V, 5V, 10V Versions 0.075% Max, 10ppm/°C Max, Only 130μA Supply Current
2
61611
DAC A
CLR V
CC
REF
5V
U1 LTC1660
0.1μF
0.1μF
0.1μF
V
A
3
V
H
´
= V
H
+ ΔV
H
V
L
´
= V
L
+ V
L
V
L
´
1
2
V
H
(FROM MAIN DAC)
V
L
(FROM MAIN DAC)
10V
–5V
R
G
50k
R
F
5k
V
B
V
C
V
D
GND
166560 TA03
3
DAC B
0.1μF
R
G
50k
R
G
50k
R
G
50k
–
+
U2A
LT1369
QUAD
0.1μF
5
7
6
R
F
5k
R
F
5k
R
F
5k
LOGIC
DRIVE
PIN DRIVER
(1 OF 2)
DAC C
DAC D
DAC H
DAC G
DAC F
DAC E
CS/LD
SCK
D
IN
4
5
8
1
9
7
–
+
U2B
LT1369
QUAD
V
L
V
OUT
V
H
CODE A
512
512
512
CODE B
1023
512
0
ΔV
H
, ΔV
L
–250mV
0
+250mV
V
A
= V
C
= 2.5V
For Resistor Values Shown:
Adjustment Range = 250mV
Adjustment Step Size = 500μV
Note: DACs E Through H Can Be
Configured for a Second Pin Driver
With U2C and U2D of the LT1369
V
H
´
= V
H
+
(V
A
– V
B
)
R
F
R
G
V
L
´
= V
L
+
(V
C
– V
D
)
R
F
R
G
V
H
´
A Pin Driver V
H
and V
L
Adjustment Circuit for ATE Applications