参数资料
型号: LTC1458LISW#TRPBF
厂商: Linear Technology
文件页数: 1/12页
文件大小: 0K
描述: IC D/A CONV 12BIT R-R QUAD28SOIC
标准包装: 1,000
设置时间: 14µs
位数: 12
数据接口: 串行
转换器数目: 4
电压电源: 单电源
功率耗散(最大): 2.4mW
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
供应商设备封装: 28-SOIC
包装: 带卷 (TR)
输出数目和类型: 4 电压,单极
采样率(每秒): *
1
LTC1458/LTC1458L
Quad 12-Bit Rail-to-Rail
Micropower DACs
Daisy-Chained Control Outputs
The LTC
1458/LTC1458L are complete single supply,
quad rail-to-rail voltage output, 12-bit digital-to-analog
converters (DACs) in SO-28 and SSOP-28 packages. They
include an output buffer amplifier with variable gain (
×1 or
×2) and an easy-to-use 3-wire cascadable serial interface.
The LTC1458 has an onboard reference of 2.048V and a
full-scale output of 4.095V in a
×2 gain configuration. It
operates from a single 4.5V to 5.5V supply dissipating
only 5.5mW (ICC = 1.1mA typ).
The LTC1458L has an onboard 1.22V reference and a full-
scale output of 2.5V in a
×2 gain configuration. It operates
from a single supply of 2.7V to 5.5V dissipating 2.4mW.
Excellent DNL, low supply current and a wide range of
built-in functions allow these parts to be used in a host of
applications when flexibility, power and single supply
operation are important.
s
Quad 12-Bit DAC
s
Buffered True Rail-to-Rail Voltage Output
s
Maximum DNL Error: 0.5LSB
s
5V Operation, ICC: 1.1mA Typ (LTC1458)
s
3V Operation, ICC: 800A Typ (LTC1458L)
s
Internal or External Reference Operation
s
Settling Time: 14
s to ±0.5LSB
s
Schmitt Trigger On Clock Input Allows Direct
Optocoupler Interface
s
Power-On Reset and CLR Pin
s
SSOP-28 Package
s
3-Wire Cascadable Serial Interface with 250kHz
Update Rate
s
Low Cost
Functional Block Diagram: Quad 12-Bit Rail-to-Rail DAC
Differential Nonlinearity
vs Input Code
s
Digital Calibration
s
Industrial Process Control
s
Automatic Test Equipment
s
Low Power Systems
1458 BD01
48-BIT
SHIFT REGISTER
AND
DAC REGISTER
CLK
DIN
5V (LTC1458)
3V TO 5V (LTC1458L)
2.048V (LTC1458)
1.22V (LTC1458L)
REFHI C
REFOUT
VOUT C
VCC
REFLO C
X1/X2 C
X1/X2 D
X1/X2 A
X1/X2 B
REFHI D
VOUT D
REFLO D
REFHI B
FROM
P
VOUT B
REFLO B
REFHI A
VOUT A
REFLO A
DOUT
CS/LD
CLR
DAC D
DAC C
DAC B
DAC A
CODE
0
DNL
(LSB)
0.5
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
1024
2048 2560
1458 G09
512
1536
3072 3584 4095
DESCRIPTIO
U
FEATURES
APPLICATIO S
U
TYPICAL APPLICATIO
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
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