
LTC2753
1
2753f
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Dual Current Output
12-/14-/16-Bit SoftSpan
DACs with Parallel I/O
The LTC2753 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 (±1LSB INL and DNL) over
temperature without any adjustments. These SoftSpan
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.
The LTC2753 DACs use a bidirectional input/output parallel
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.
The parts are specied over commercial and industrial
temperature ranges.
Dual 16-Bit VOUT DAC with Software-Selectable Ranges
■
Six Programmable Output Ranges
Unipolar: 0V to 5V, 0V to 10V
Bipolar: ±5V, ±10V, ±2.5V, –2.5V to 7.5V
■
Maximum 16-Bit INL Error: ±1 LSB over Temperature
■
Low 1μA (Maximum) Supply Current
■
Guaranteed Monotonic over Temperature
■
Low Glitch Impulse 1nVs
■
2.7V to 5.5V Single Supply Operation
■
2μs Settling Time to ±1 LSB
■
Parallel Interface with Readback of All Registers
■
Asynchronous CLR Pin Clears DAC Outputs to 0V in
Any Output Range
■
Power-On Reset to 0V
■
48-Pin 7mm × 7mm QFN Package
■
High Resolution Offset and Gain Adjustment
■
Process Control and Industrial Automation
■
Automatic Test Equipment
■
Data Acquisition Systems
LTC2753-16 Integral Nonlinearity (INL)
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
CODE
0
–1.0
INL
(LSB)
–0.8
–0.4
–0.2
0.0
1.0
0.4
16384
32768
–0.6
0.6
0.8
0.2
49152
65535
2753 TA01b
25°C
90°C
–45°C
VDD = 5V
VREF = 5V
±10V RANGE
+
–
+
–
+
SPAN I/O
DATA I/O
DAC A
46
47
R1
R2
2
1
48
39
40
LTC2753-16
RFBA
IOUT1A
VOUTA
VOUTB
IOUT2A
RVOSA
RVOSB
IOUT2B
IOUT1B
RFBB
45
4
44
43
32
42
41
ROFSB
REFB
REFA
150pF
15pF
1/2 LT1469
RCOM
RIN
ROFSA
VREF
5V
DAC B
2753 TA01
16
3
I/O PORT