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參數資料
| 型號： | LTC2757BILX#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | DAC |
| 英文描述： | PARALLEL, WORD INPUT LOADING, 2.1 us SETTLING TIME, 18-BIT DAC, PQFP48 |
| 封裝： | 7 X 7 MM, LEAD FREE, PLASTIC, MS-026, LQFP-48 |
| 文件頁數： | 1/20頁 |
| 文件大小： | 259K |
| 代理商： | LTC2757BILX#PBF |
LTC2757
1
2757f
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
18-Bit SoftSpan IOUT DAC
with Parallel I/O
The LTC2757 is an 18-bit multiplying parallel-input, cur-
rent-output digital-to-analog converter that provides full 18-
bit performance—INL and DNL of ±1LSB maximum—over
temperature without any adjustments. 18-bit monotonicity
is guaranteed in all performance grades. This SoftSpan
DAC operates from a single 3V to 5V supply and offers
six output ranges (up to ±10V) that can be programmed
through the parallel interface or pin-strapped for operation
in a single range.
In addition to its precision DC specications, the LTC2757
also offers excellent AC specications, including 2.1μs
full-scale settling to 1LSB and 1.4nVs glitch impulse.
The LTC2757 uses a bidirectional input/output parallel
interface that allows readback of any on-chip register,
including DAC output-range settings; and a CLR pin and
power-on reset circuit that each reset the DAC output to
0V regardless of output range.
18-Bit Voltage Output DAC with Software-Selectable Ranges
n Maximum 18-Bit INL Error: ±1 LSB Over Temperature
n Program or Pin-Strap Six Output Ranges:
0V to 5V, 0V to 10V, –2.5V to 7.5V, ±2.5V, ±5V, ±10V
n Guaranteed Monotonic Over Temperature
n Low Glitch Impulse 1.4nVs (3V), 3nVs (5V)
n 18-Bit Settling Time: 2.1μs
n 2.7V to 5.5V Single Supply Operation
n Reference Current Constant for All Codes
n Voltage-Controlled Offset and Gain Trims
n Parallel Interface with Readback of All Registers
n Clear and Power-On-Reset to 0V Regardless of
Output Range
n 48-Pin 7mm
× 7mm LQFP Package
n Instrumentation
n Medical Devices
n Automatic Test Equipment
n Process Control and Industrial Automation
LTC2757 Integral Nonlinearity
L, LT, LTC, LTM, Linear Technology and the Linear logo 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.
150pF
+
–
LT1012
–
+
LT1468
18-BIT DAC WITH SPAN SELECT
LTC2757
VOSADJ
RCOM
RIN
ROFS
REF
5V
REF
RFB
IOUT1
VOUT
IOUT2
GND
WR
UPD
READ
D/S
CLR
M-SPAN
SPAN I/O
S2-S0
GAIN
ADJUST
GEADJ
27pF
VDD
2757 TA01
WR
UPD
READ
D/S
CLR
0.1μF
DATA I/O
D17-D0
OFFSET
ADJUST
CODE
0
65536
–1.0
INL
(LSB)
–0.8
–0.6
–0.4
–0.2
0.6
0.4
0.2
0
0.8
1.0
131072
196608
262143
2757 TA01b
±10V RANGE
90°C
25°C
–45°C
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