
1
LTC1591/LTC1597
14-Bit and 16-Bit Parallel
Low Glitch Multiplying DACs
with 4-Quadrant Resistors
DESCRIPTIO
N
U
The LTC
1591/LTC1597 are pin compatible, parallel input
14-bit and 16-bit multiplying current output DACs that oper-
ate from a single 5V supply. INL and DNL are accurate to 1LSB
over the industrial temperature range in both 2- and 4-
quadrant multiplying modes. True 16-bit 4-quadrant multi-
plication is achieved with on-chip 4-quadrant multiplication
resistors.
These DACs include an internal deglitcher circuit that reduces
the glitch impulse to less than 2nV-s (typ). The asynchronous
CLR pin resets the LTC1591/LTC1597 to zero scale and
LTC1591-1/LTC1597-1 to midscale.
The LTC1591/LTC1597 are available in 28-pin SSOP and
PDIP packages and are specified over the industrial tempera-
ture range.
For serial interface 16-bit current output DACs refer to the
LTC1595/LTC1596 data sheet.
, LTC and LT are registered trademarks of Linear Technology Corporation.
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Process Control and Industrial Automation
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Direct Digital Waveform Generation
I
Software-Controlled Gain Adjustment
I
Automatic Test Equipment
APPLICATIO
S
U
I
True 16-Bit Performance Over Industrial
Temperature Range
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DNL and INL: 1LSB Max
I
On-Chip 4-Quadrant Resistors Allow Precise 0V to
10V, 0V to –10V or
±
10V Outputs
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Pin Compatible 14- and 16-Bit Parts
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Asynchronous Clear Pin
LTC1591/LTC1597: Reset to Zero Scale
LTC1591-1/LTC1597-1: Reset to Midscale
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Glitch Impulse < 2nV-s
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28-Lead SSOP Package
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Low Power Consumption: 10
μ
W Typ
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Power-On Reset
FEATURES
TYPICAL APPLICATIO
N
U
LTC1591/LTC1591-1 Integral Nonlinearity
1.0
V
REF
= 10V
V
OUT
=
±
10V BIPOLAR
LTC1597/LTC1597-1 Integral Nonlinearity
1.0
V
REF
= 10V
V
OUT
=
±
10V BIPOLAR
DIGITAL INPUT CODE
0
I
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
16384
32768
1591/97 TA03
49152
65535
DIGITAL INPUT CODE
0
I
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
4096
8192
1591/97 TA02
12288
16383
16-Bit, 4-Quadrant Multiplying DAC with a
Minimum of External Components
V
CC
LTC1597-1
R
FB
R
FB
R
OFS
R
OFS
5V
LD
LD
CLR
3
R1
2
R
COM
9
8
28
23
15pF
7
22
1
REF
4
5
0.1
μ
F
6
I
OUT1
15pF
V
OUT
=
–V
REF
TO V
REF
1591/97 TA01
AGND
DGND
–
+
LT
1468
WR
10
24 TO 27
WR
CLR
V
REF
–
+
LT1468
16-BIT DAC
R1
R2
16
DATA
INPUTS