LTC1661 Linear Technology, LTC1661 Datasheet - Page 12

• Manufacturer Part Number: LTC1661
• Description: Micropower Dual 10-Bit DAC in MSOP
• Manufacturer: Linear Technology

LTC1661
TYPICAL APPLICATIO
12
RELATED PARTS
PART NUMBER
LTC1446/LTC1446L
LTC1448
LTC1454/LTC1454L
LTC1458/LTC1458L
LTC1659
LTC1663
LTC1665/LTC1660
CS/LD
SCK
D
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
IN
DESCRIPTION
Dual 12-Bit V
Dual 12-Bit V
Dual 12-Bit V
Quad 12-Bit Rail-to-Rail Output DACs with Added Functionality
Single Rail-to-Rail 12-Bit V
V
Single 10-Bit V
Octal 8/10-Bit V
CC
1
1
3
2
3
2
: 2.7V to 5.5V
4
4
LTC1661
LTC1661
DAC A
DAC B
DAC B
DAC A
OUT
OUT
OUT
6
6
U1
U2
5V
5V
OUT
OUT
7
DACs in SO-8 Package with Internal Reference
DAC in SO-8 Package
DACs in SO-16 Package with Added Functionality
DAC in SOT-23 Package
U
DAC in 16-Pin Narrow SSOP
0.1 F
0.1 F
Pin Driver V
OUT
8
V
5
V
5
V
8
V
A1
B1
B2
A2
DAC in 8-Lead MSOP Package
= 2.5V
= 2.5V
(FROM MAIN
50k
50k
50k
50k
(FROM MAIN
R2
R3
R5
R7
INPUT DAC)
INPUT DAC)
V
V
L
H
= –2.5V
= 7.5V
H
R1
5k
R8
5k
and V
3
2
6
5
–
+
+
–
LT1368
LT1368
U3A
U3B
8
4
–5V
10V
L
Adjustment in ATE Applications
0.1 F
R6
5k
0.1 F
R4
5k
1
7
V
V
H
L
= V
= V
H
L
+ V
+ V
0.1 F
0.1 F
V
V
V
FOR VALUES SHOWN,
L
H
A1
H
COMMENTS
LTC1446: V
LTC1446L: V
V
LTC1454: V
LTC1454L: V
LTC1458: V
LTC1458L: V
Low Power Multiplying V
GND to REF. REF Input Can Be Tied to V
V
V
L
V
V
CC
CC
CC
H
H
=
=
=
LOGIC
DRIVE
FOR EACH U1 AND U2
, V
, V
= 2.7V to 5.5V, External Reference Can Be Tied to V
= 2.7V to 5.5V, Internal Reference, 60 A
= 2.7V to 5.5V, Micropower, Rail-to-Rail Output
CODE A CODE B
V
V
V
–2.5V 250mV
512
512
512
A2
H
L
L
L
+
+
ADJUSTMENT RANGE = 250mV
STEP SIZE = 500 V
= 2.5V
V
V
CC
CC
CC
H
L
CC
CC
CC
R1
R2
R1
R2
= 4.5V to 5.5V, V
= 4.5V to 5.5V, V
= 4.5V to 5.5V, V
DRIVER
(1 0F N)
= 2.7V to 5.5V, V
= 2.7V to 5.5V, V
= 2.7V to 5.5V, V
PIN
1023
(V
(V
512
0
A1
A2
1661f LT/TP 0100 4K • PRINTED IN THE USA
LINEAR TECHNOLOGY CORPORATION 1999
– V
– V
OUT
B1
B2
DAC. Output Swings from
–250mV
250mV
7.5V 250mV
V
OUT
OUT
OUT
)
)
H
OUT
OUT
OUT
V
, V
0
OUT
= 0V to 4.095V
= 0V to 4.095V
= 0V to 4.095V
= 0V to 2.5V
= 0V to 2.5V
= 0V to 2.5V
L
CC
1661 F03
CC