LTC1591_15 Datasheet, PDF (1/20 Pages) Linear Technology – 14-Bit and 16-Bit Parallel Low Glitch Multiplying DACs with 4-Quadrant Resistors

LTC1591/LTC1597
FEATURES
14-Bit and 16-Bit Parallel
Low Glitch Multiplying DACs
with 4-Quadrant Resistors
DESCRIPTIO
■ _{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: 10μW Typ}
■ _{Power-On Reset}
U
APPLICATIO S
■ _{Process Control and Industrial Automation}
■ _{Direct Digital Waveform Generation}
■ _{Software-Controlled Gain Adjustment}
■ _{Automatic Test Equipment}
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.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
16-Bit, 4-Quadrant Multiplying DAC with a
Minimum of External Components
V_REF
+
5V
LT^®1468
–
0.1μF
15pF
3
2
1 23 4
5
R1
R_COM
REF V_CC R_OFS
R_FB
16
DATA
INPUTS
R1
R2
LTC1597-1
R_OFS R_FB
16-BIT DAC
I_{OUT1 6}
AGND 7
10 TO 21,
24 TO 27
WR LD CLR
WR
9 8 28
LD
CLR
22
DGND
15pF
–
LT1468
+
V_OUT =
–V_REF
TO V_REF
1591/97 TA01
LTC1591/LTC1591-1 Integral Nonlinearity
1.0
0.8
V_REF = 10V
V_OUT = ±10V BIPOLAR
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
4096
8192 12288 16383
DIGITAL INPUT CODE
1591/97 TA02
LTC1597/LTC1597-1 Integral Nonlinearity
1.0
0.8
V_REF = 10V
V_OUT = ±10V BIPOLAR
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
16384 32768 49152
DIGITAL INPUT CODE
65535
1591/97 TA03
15917fa
1