参数资料
型号: LTC1657IGN#TR
厂商: Linear Technology
文件页数: 1/16页
文件大小: 0K
描述: IC DAC 16BIT R-R MICROPWR 28SSOP
标准包装: 2,500
设置时间: 20µs
位数: 16
数据接口: 并联
转换器数目: 1
电压电源: 单电源
功率耗散(最大): 3mW
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-SSOP(0.154",3.90mm 宽)
供应商设备封装: 28-SSOP
包装: 带卷 (TR)
输出数目和类型: 1 电压,单极;1 电压,双极
采样率(每秒): *
1
LTC1657/LTC1657L
Parallel 16-Bit Rail-to-Rail
Micropower DAC
s
16-Bit Monotonic Over Temperature
s
Deglitched Rail-to-Rail Voltage Output: 8nVs
s
ICC: 650A Typ
s
Maximum DNL Error:
±1LSB
s
Settling Time: 20
s to ±1LSB
s
Built-In Reference: 2.048V (LTC1657)
1.25V (LTC1657L)
s
Internal Power-On Reset to Zero Volts
s
Asynchronous CLR Pin
s
Output Buffer Configurable for Gain of 1 or 2
s
Parallel 16-Bit or 2-Byte Double Buffered Interface
s
Narrow 28-Lead SSOP Package
s
Multiplying Capability
The LTC
1657/LTC1657L are complete single supply, rail-
to-rail voltage output, 16-bit digital-to-analog converters
(DAC) in a 28-pin SSOP or PDIP package. They include a
rail-to-rail output buffer amplifier, an internal reference
and a double buffered parallel digital interface.
The LTC1657/LTC1657L have separate reference input
pins that can be driven by an external reference. The full-
scale output can be 1 or 2 times the reference voltage
depending on how the X1/X2 pin is connected. The LTC1657
operates from a 4.5V to 5.5V supply and has an onboard
2.048V reference. The LTC1657L operates from a 2.7V to
5.5V supply and has an onboard 1.25V reference.
The LTC1657/LTC1657L are similar to Linear Technol-
ogy Corporation’s LTC1450/LTC1450L 12-bit VOUT DAC
family, allowing an upgrade path. They are the only
buffered 16-bit parallel DACs in a 28-lead SSOP package
and include an onboard reference for stand alone
performance.
, LTC and LT are registered trademarks of Linear Technology Corporation.
s
Instrumentation
s
Digital Calibration
s
Industrial Process Control
s
Automatic Test Equipment
s
Communication Test Equipment
Differential Nonlinearity
vs Input Code
REFLO
GND
LTC1657: 4.5V TO 5.5V
LTC1657L: 2.7V TO 5.5V
LTC1657:
0V TO 4.096V
LTC1657L:
0V TO 2.5V
16-BIT
DAC
R
25
REFHI
REFOUT
22
24
23
X1/X2
21
20
26
1657 TA01
VOUT
VCC
D15 (MSB)
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
1
2
28
27
D8
D7
DATA IN FROM
MICROPROCESSOR
DATA BUS
FROM
MICROPROCESSOR
DECODE LOGIC
FROM
SYSTEM RESET
D0 (LSB)
+
REFERENCE
LTC1657: 2.048V
LTC1657L: 1.25V
16-BIT
DAC
REGISTER
POWER-ON
RESET
LDAC
CLR
WR
CSMSB
CSLSB
LSB
8-BIT
INPUT
REGISTER
MSB
8-BIT
INPUT
REGISTER
DESCRIPTIO
U
FEATURES
APPLICATIO S
U
BLOCK DIAGRA
W
DIGITAL INPUT CODE
0
16384
32768
49152
65535
DIFFERENTIAL
NONLINEARITY
(LSB)
1657 TA02
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
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