LTC1661
14
1661fa
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
LINEAR TECHNOLOGY CORPORATION 1999
LT 1110 REV A PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
+
U3A
LT1368
PIN
DRIVER
(1 0F N)
VH
VL
VOUT
1661 F03
LOGIC
DRIVE
4
–5V
10V
5V
VH = 7.5V
(FROM MAIN
INPUT DAC)
VL = –2.5V
(FROM MAIN
INPUT DAC)
VA1 = 2.5V
VH′ = VH + VH
VL′ = VL + VL
VB1
R4
5k
0.1F
8
3
1
CS/LD
DIN
SCK
4
6
3
2
1
8
5
2
0.1F
R3
50k
LTC1661
U1
DAC A
DAC B
R2
50k
R1
5k
0.1F
+
U3B
LT1368
5V
VB2
VA2 = 2.5V
6
1
4
6
3
2
7
5
8
5
0.1F
R7
50k
LTC1661
U2
DAC B
DAC A
R5
50k
R6
5k
7
R8
5k
0.1F
FOR EACH U1 AND U2
CODE A CODE B VH, VL
512
1023
–250mV
512
0
512
0
250mV
–2.5V 250mV
7.5V 250mV
VA2 = 2.5V
VA1 =
VH +
(VA1 – VB1)
VH′ =
R1
R2
VL +
(VA2 – VB2)
VL′ =
FOR VALUES SHOWN,
VH, VL ADJUSTMENT RANGE = ±250mV
VH, VL STEP SIZE = 500V
R1
R2
Pin Driver VH and VL Adjustment in ATE Applications
PART NUMBER
DESCRIPTION
COMMENTS
LTC1446/LTC1446L Dual 12-Bit VOUT DACs in SO-8 Package with Internal Reference
LTC1446: VCC = 4.5V to 5.5V, VOUT = 0V to 4.095V
LTC1446L: VCC = 2.7V to 5.5V, VOUT = 0V to 2.5V
LTC1448
Dual 12-Bit VOUT DAC in SO-8 Package
VCC = 2.7V to 5.5V, External Reference Can Be Tied to VCC
LTC1454/LTC1454L Dual 12-Bit VOUT DACs in SO-16 Package with Added
Functionality
LTC1454: VCC = 4.5V to 5.5V, VOUT = 0V to 4.095V
LTC1454L: VCC = 2.7V to 5.5V, VOUT = 0V to 2.5V
LTC1458/LTC1458L Quad 12-Bit Rail-to-Rail Output DACs with Added Functionality
LTC1458: VCC = 4.5V to 5.5V, VOUT = 0V to 4.095V
LTC1458L: VCC = 2.7V to 5.5V, VOUT = 0V to 2.5V
LTC1659
Single Rail-to-Rail 12-Bit VOUT DAC in 8-Lead MSOP Package
VCC: 2.7V to 5.5V
Low Power Multiplying VOUT DAC. Output Swings from GND to
REF. REF Input Can Be Tied to VCC
LTC1663
Single 10-Bit VOUT DAC in SOT-23 Package
VCC = 2.7V to 5.5V, Internal Reference, 60A
LTC1665/LTC1660
Octal 8/10-Bit VOUT DAC in 16-Pin Narrow SSOP
VCC = 2.7V to 5.5V, Micropower, Rail-to-Rail Output
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