FEATURES
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LTC1591/LTC1597
14-Bit and 16-Bit Parallel
Low Glitch Multiplying DACs
with 4-Quadrant Resistors
DESCRIPTION
The LTC
廬
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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True 16-Bit Performance Over Industrial
Temperature Range
DNL and INL: 1LSB Max
On-Chip 4-Quadrant Resistors Allow Precise 0V to
10V, 0V to 鈥?10V or
鹵
10V Outputs
Pin Compatible 14- and 16-Bit Parts
Asynchronous Clear Pin
LTC1591/LTC1597: Reset to Zero Scale
LTC1591-1/LTC1597-1: Reset to Midscale
Glitch Impulse < 2nV-s
28-Lead SSOP Package
Low Power Consumption: 10碌W Typ
Power-On Reset
APPLICATIONS
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Process Control and Industrial Automation
Direct Digital Waveform Generation
Software-Controlled Gain Adjustment
Automatic Test Equipment
TYPICAL APPLICATION
16-Bit, 4-Quadrant Multiplying DAC with a
Minimum of External Components
V
REF
5V
0.1碌F
LTC1591/LTC1591-1 Integral Nonlinearity
1.0
0.8
INTEGRAL NONLINEARITY (LSB)
LT
廬
1468
15pF
1
REF
23 4
V
CC
R
OFS
R
OFS
R
FB
V
OUT
=
鈥揤
REF
TO V
REF
INTEGRAL NONLINEARITY (LSB)
5
R
FB
15pF
3
R1
R1
16
DATA
INPUTS
10 TO 21,
24 TO 27
2
R
COM
R2
LTC1597/LTC1597-1 Integral Nonlinearity
1.0
0.8
0.6
0.4
0.2
0
鈥?.2
鈥?.4
鈥?.6
鈥?.8
鈥?.0
0
49152
32768
16384
DIGITAL INPUT CODE
65535
1591/97 TA03
LTC1597-1
16-BIT DAC
DGND
WR LD CLR
22
WR
LD
CLR
9
8
28
+
AGND
7
鈥?/div>
I
OUT1
6
LT1468
1591/97 TA01
U
U
U
V
REF
= 10V
V
OUT
=
鹵10V
BIPOLAR
0.6
0.4
0.2
0
鈥?.2
鈥?.4
鈥?.6
鈥?.8
鈥?.0
0
12288
8192
4096
DIGITAL INPUT CODE
16383
1591/97 TA02
+
鈥?/div>
V
REF
= 10V
V
OUT
=
鹵10V
BIPOLAR
1
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