Linear Technology DC1112A - LTC2755: 16-bit, Quad, SoftSpan, 1LSB INL Iout DAC, req. DC590 DC1112A DC1112A Fiche De Données
Codes de produits
DC1112A
LTC2755
1
2755f
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Quad Current Output
12-/14-/16-Bit SoftSpan
DACs with Parallel I/O
The LTC
®
2755 is a family of quad 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
guaranteed monotonic over temperature. The LTC2755A-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.
DACs operate from a single 2.7V to 5.5V supply and are all
guaranteed monotonic over temperature. The LTC2755A-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 LTC2755 DACs use a bidirectional input/output paral-
lel interface that allows readback of any internal register,
including the DAC output span settings. A power-on reset
circuit resets the DAC outputs to 0V when power is initially
applied. A logic low on the CLR pin asynchronously clears
the DACs to 0V in any output range.
lel interface that allows readback of any internal register,
including the DAC output span settings. A power-on reset
circuit resets the DAC outputs to 0V when power is initially
applied. A logic low on the CLR pin asynchronously clears
the DACs to 0V in any output range.
The parts are specifi ed over commercial and industrial
temperature ranges.
temperature ranges.
Quad 16-Bit V
OUT
DAC with Software-Selectable Ranges
■
Program or Pin-Strap Six 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 1nV•s
■
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
■
64-Pin 9mm × 9mm QFN Package
■
High Resolution Offset and Gain Adjustment
■
Process Control and Industrial Automation
■
Automatic Test Equipment
■
Data Acquisition Systems
LTC2755-16 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. Protected by U.S. Patents, including 7034735,
7256721.
property of their respective owners. Protected by U.S. Patents, including 7034735,
7256721.
2755 TA01
V
REF2
5V
V
REF1
5V
SPAN I/O
DATA I/O
–
+
+
+
–
DAC C
I
OUT1C
R
FBC
R
OFSC
R
OFSB
REFD
R
OFSD
R
OFSA
MSPAN
GND
R
IN2
R
IN1
REFC
REFA REFB
R
COM2
R
COM1
LTC2755-16
I
OUT2C
I
OUT1D
I
OUT2A
I
OUT1A
R
FBA
R
VOSA
R
FBD
I
OUT2D
R
VOSD
R
VOSC
V
OUTC
V
OUTD
V
OUTA
DAC D
5V
0.1μF
+
–
–
DAC B
I
OUT2B
R
FBB
V
DD
I
OUT1B
R
VOSB
V
OUTB
–
+
+
+
–
–
I/O PORT
I/O PORT
DAC A
+
–
–
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
2755 TA01b
25°C
90°C
–45°C
90°C
–45°C
V
DD
= 5V
V
REF
= 5V
±10V RANGE
SINGLE
DUAL
QUAD
Part Number
LTC2751
LTC2753
LTC2755
SoftSpan Parallel I
OUT
DAC Selector Guide