
1
LTC1591/LTC1597
15917fa
14-Bit and 16-Bit Parallel
Low Glitch Multiplying DACs
with 4-Quadrant Resistors
The LTC
1591/LTC1597 are pin compatible, parallel input
14-bit and 16-bit multiplying current output DACs that oper-
atefromasingle5Vsupply.INLandDNLareaccurateto1LSB
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.
■ Process Control and Industrial Automation
■ Direct Digital Waveform Generation
■ Software-Controlled Gain Adjustment
■ Automatic Test Equipment
■ 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 – 10V or
±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
μW Typ
■ Power-On Reset
LTC1591/LTC1591-1 Integral Nonlinearity
LTC1597/LTC1597-1 Integral Nonlinearity
DIGITAL INPUT CODE
0
INTEGRAL
NONLINEARITY
(LSB)
1.0
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
VREF = 10V
VOUT = ±10V BIPOLAR
DIGITAL INPUT CODE
0
INTEGRAL
NONLINEARITY
(LSB)
1.0
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
VREF = 10V
VOUT = ±10V BIPOLAR
16-Bit, 4-Quadrant Multiplying DAC with a
Minimum of External Components
TYPICAL APPLICATIO
U
APPLICATIO S
U
DESCRIPTIO
U
FEATURES
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
VCC
LTC1597-1
RFB
ROFS
5V
LD
32
98
28
23
15pF
7
22
R1
RCOM
1
REF
4
5
0.1
μF
6
IOUT1
15pF
VOUT =
–VREF
TO VREF
1591/97 TA01
AGND
DGND
–
+
LT
1468
WR
10 TO 21,
24 TO 27
WR
CLR
VREF
–
+
LT1468
16-BIT DAC
R1
R2
16
DATA
INPUTS