LTC2753
Dual Current Output
12-/14-/16-Bit SoftSpan
DACs with Parallel I/O
FEATURES
DESCRIPTION
The LTC®2753 is a family of dual 12-, 14-, and 16-bit
multiplying parallel-input, current-output DACs. These
DACs operate from a single 2.7V to 5.5V supply and are all
guaranteedmonotonicovertemperature.TheLTC2753A-16
provides 16-bit performance ( 1LꢀS ꢁIL and DILꢂ over
temperature without any adjustments. These ꢀoftꢀpan™
DACs offer six output ranges—two unipolar and four
bipolar—that can be programmed through the parallel
interface, or pinstrapped for operation in a single range.
■
Six Programmable Output Ranges
Unipolar: 0V to 5V, 0V to 10V
Bipolar: ±5V, ±10V, ±±25V, –±25V to 725V
■
Maximum 16-Bit INL Error: ±1 LSB oꢀer Temperature
■
Low 1μA (Maximum) Supply Current
■
Guaranteed Monotonic oꢀer Temperature
■
Low Glitch Impulse 1nV•s
■
2.7V to 5.5V ꢀingle ꢀupply Operation
■
2μs ꢀettling Time to 1 LꢀS
■
Parallel ꢁnterface with Readback of All Registers
TheLTC2753DACsuseabidirectionalinput/outputparallel
interface that allows readback of any on-chip register. A
power-on reset circuit resets the DAC outputs to 0V when
power is initially applied. A logic low on the CLR pin asyn-
chronously clears the DACs to 0V in any output range.
■
Asynchronous CLR Pin Clears DAC Outputs to 0V in
Any Output Range
Power-On Reset to 0V
48-Pin 7mm × 7mm QFI Package
■
■
The parts are specified over commercial and industrial
temperature ranges.
APPLICATIONS
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
ꢀoftꢀpan is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
■
High Resolution Offset and Gain Adjustment
■
Process Control and ꢁndustrial Automation
■
Automatic Test Equipment
■
Data Acquisition ꢀystems
TYPICAL APPLICATION
Dual 16-Bit VOUT DAC with Software-Selectable Ranges
LTC±753-16 Integral Nonlinearity (INL)
LTC2753-16
R
47
2
V
REF
5V
OFꢀA
1.0
R
V
V
= 5V
REF
±10V RANGE
ꢁI
DD
46
R
ꢁ
FSA
15pF
0.8
0.6
= 5V
+
–
45
4
–
OUT1A
R1
R2
1/2 LT1469
0.4
R
1
COM
V
1/2 LT1469
+
DAC A
OUTA
ꢁ
0.2
OUT2A
150pF
0.0
REFA 48
REFS 39
44
43
R
R
VOꢀA
VOꢀS
–0.2
–0.4
–0.6
–0.8
–1.0
32
ꢁ
ꢁ
+
OUT2S
25°C
90°C
–45°C
V
1/2 LT1469
–
DAC S
OUTS
42
41
OUT1S
15pF
R
40
OFꢀS
R
0
16384
32768
CODE
49152
65535
FSS
3
2753 TA01
ꢀPAI ꢁ/O
DATA ꢁ/O
ꢁ/O PORT
ꢁ/O PORT
16
2753 TA01b
2753f
1