Linear Technology LTC2752 Dual 16-Bit SoftSpan IOUT DAC with Serial SPI Interface Demo Board, req DC590B DC1684A-B DC1684A-B データシート
製品コード
DC1684A-B
LTC2752
2752f
Typical applicaTion
FeaTures
applicaTions
DescripTion
Dual16-Bit
SoftSpan I
OUT
DACs
The LTC
®
2752 is a dual 16-bit multiplying serial-input,
current-output digital-to-analog converter. It operates from
a single 3V to 5V supply and is guaranteed monotonic
over temperature. The LTC2752A provides full 16-bit
performance (±1LSB INL and DNL, max) over temperature
without any adjustments. This SoftSpan™ DAC offers
six output ranges (up to ±10V) that can be programmed
through the 3-wire SPI serial interface, or pinstrapped for
operation in a single range.
Any on-chip register (including DAC output-range set-
Any on-chip register (including DAC output-range set-
tings) can be read for verification in just one instruction
cycle; and if you change register content, the altered
register will be automatically read back during the next
instruction cycle.
Voltage-controlled offset and gain adjustments are also
Voltage-controlled offset and gain adjustments are also
provided; and the power-on reset circuit and CLR pin both
reset the DAC outputs to 0V regardless of output range.
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners. Protected by U.S. Patents, including 5481178.
Dual 16-Bit V
OUT
DAC with Software-Selectable Ranges
n
Program or Pin-Strap Six Output Ranges
0V to 5V, 0V to 10V, –2.5V to 7.5V, ±2.5V, ±5V, ±10V
n
Maximum 16-Bit INL Error: ±1 LSB over
Temperature
n
Guaranteed Monotonic over Temperature
n
Glitch Impulse 0.6nV•s (3V), 2.2nV•s (5V)
n
Serial Readback of All On-Chip Registers
n
1μA Maximum Supply Current
n
2.7V to 5.5V Single-Supply Operation
n
16-Bit Settling Time: 2µs
n
Voltage-Controlled Offset and Gain Trims
n
Clear and Power-On-Reset to 0V Regardless of
Output Range
n
48-Pin 7mm
× 7mm LQFP Package
n
High Resolution Offset and Gain Adjustment
n
Process Control and Industrial Automation
n
Automatic Test Equipment
n
Data Acquisition Systems
LTC2752
V
DD
GND
GE
ADJB
SPI with READBACK
–
+
+
–
DAC B
REFERENCE
5V
V
OUTB
R
INA
REF
A
REFERENCE
5V
REFB
R
OFSA
R
OFSB
R
COMB
R
COMA
R
INB
V
OSADJB
ALL AMPLIFIERS 1/2 LT1469
I
OUT1B
I
OUT2B
R
FBB
GE
ADJA
+
–
2752 TA01
V
OUTA
V
OSADJA
I
OUT1A
I
OUT2A
R
FBA
+
–
DAC A
CODE
0
–1.0
INL (LSB)
–0.8
–0.4
–0.2
0
1.0
0.4
16384
32768
2752 TA01b
–0.6
0.6
0.8
0.2
49152
65535
±10V RANGE
Integral Nonlinearity (INL)