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LTC1654IGN#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
13
LTC1654
1654fb
This circuit shows how to use an LTC1654 and an LT
®
1077
to make a wide bipolar output swing 14-bit DAC with an
offset that can be digitally programmed. V
OUTA
, which can
be set by loading the appropriate code for DAC A, sets the
offset. As this value changes, the transfer curve for the
output moves up and down as illustrated in the graph
below.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
X
1
/X
1/2
B
CLR
SCK
SDI
CS/LD
DGND
SDO
X
1
/X
1/2
A
V
CC
V
OUT B
REFHI B
REFLO B
AGND
REFLO A
REFHI A
V
OUT A
LTC1654
0.1µF
49.9k
1%
5V
1654 TA02
µP
100k
1%
49.9k
1%
V
OUT
2 (V
OUTB
– V
OUTA
)
15V
–15V
100k
1%
–
+
LT1077
V
OUT
0
V
OUTA
≅ 0V
V
OUTA
≅ 2.5V
V
OUTA
≅ 5V
CODE
5
1654 TA03
–5
–10
10
16383
A Wide Swing, Bipolar Output 14-Bit DAC with Digitally Controlled Offset
TYPICAL APPLICATIO S
U
14
LTC1654
1654fb
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
X
1
/X
1/2
B
CLR
SCK
SDI
CS/LD
DGND
SDO
X
1
/X
1/2
A
V
CC
V
OUT B
REFHI B
REFLO B
AGND
REFLO A
REFHI A
V
OUT A
LTC1654
0.1µF
2.7V TO 5.5V
OUTPUT B: 0V TO V
CC
OUTPUT A: 0V TO V
CC
1654 TA01
µP
Dual 14-Bit Voltage Output DAC
TYPICAL APPLICATIO S
U
15
LTC1654
1654fb
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.
PACKAGE DESCRIPTION
U
GN16 (SSOP) 0502
12
3
4
5
6
7
8
.229 – .244
(5.817 – 6.198)
.150 – .157**
(3.810 – 3.988)
16
15
14
13
.189 – .196*
(4.801 – 4.978)
12 11 10
9
.016 – .050
(0.406 – 1.270)
.015 ± .004
(0.38 ± 0.10)
× 45°
0° – 8° TYP
.007 – .0098
(0.178 – 0.249)
.053 – .068
(1.351 – 1.727)
.008 – .012
(0.203 – 0.305)
.004 – .0098
(0.102 – 0.249)
.0250
(0.635)
BSC
.009
(0.229)
REF
.254 MIN
RECOMMENDED SOLDER PAD LAYOUT
.150 – .165
.0250 TYP.0165
± .0015
.045
±.005
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
INCHES
(MILLIMETERS)
NOTE:
1. CONTROLLING DIMENSION: INCHES
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
GN Package
16-Lead Plastic SSOP (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1641)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LTC1654IGN#TRPBF

Mfr. #:
Buy LTC1654IGN#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Digital to Analog Converters - DAC 2x 14-B R2R DAC in 16-Lead SSOP Package
Lifecycle:
New from this manufacturer.
Delivery:
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