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LTC1668IG

更新时间： 2024-01-11 09:56:59
品牌 Logo 应用领域
凌特 - Linear 转换器数模转换器光电二极管信息通信管理
页数 文件大小 规格书
16页 731K
描述
16-Bit, 50Msps DAC

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LTC1668IG 技术参数

是否无铅：含铅是否Rohs认证：符合
生命周期：Active包装说明：SSOP,
针数：28Reach Compliance Code：compliant
风险等级：5.14Is Samacsys：N
最大模拟输出电压：1 V最小模拟输出电压：-1 V
转换器类型：D/A CONVERTER输入位码：BINARY
输入格式：PARALLEL, WORDJESD-30 代码：R-PDSO-G28
JESD-609代码：e3长度：10.2 mm
最大线性误差 (EL)：0.0122%湿度敏感等级：1
标称负供电电压：-5 V位数：16
功能数量：1端子数量：28
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：SSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：2 mm标称安定时间 (tstl)：0.02 µs
标称供电电压：5 V表面贴装：YES
技术：BICMOS温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：5.3 mm
Base Number Matches：1

LTC1668IG 数据手册

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Final Electrical Specifications  
LTC1668  
16-Bit, 50Msps DAC  
February 2000  
U
FEATURES  
DESCRIPTIO  
The LTC®1668 is a 16-bit, 50Msps differential current  
output DAC implemented on a high performance BiCMOS  
process with laser trimmed, thin-film resistors. The com-  
bination of a novel current-steering architecture and a  
high performance process produces a DAC with excep-  
tional AC and DC performance. This is the first 16-bit DAC  
in the marketplace to exhibit an SFDR (spurious free  
dynamic range) of 87dB for an output signal frequency of  
1MHz.  
■
50Msps Update Rate  
■
16-Bit Resolution  
■
High Spectral Purity: 87dB SFDR at 1MHz fOUT  
Differential Current Outputs  
30ns Settling Time  
5pV-s Glitch Impulse  
Low Power: 180mW from ±5V Supplies  
TTL/CMOS (3.3V or 5V) Inputs  
■
■
■
■
■
■
Small Package: 28-Pin SSOP  
Operating from ±5V supplies, the LTC1668 can be con-  
figured to provide full-scale output currents up to 10mA.  
The differential current outputs of the DAC allow single-  
endedortruedifferentialoperation. The–1Vto1Voutput  
compliance of the LTC1668 allows the outputs to be con-  
nected directly to external resistors to produce a differ-  
ential output voltage without degrading the converter’s  
linearity.Alternatively,theoutputscanbeconnectedtothe  
summing junction of a high speed operational amplifier,  
or to a transformer.  
U
APPLICATIO S  
■
Cellular Base Stations  
■
Multicarrier Base Stations  
■
Wireless Communication  
■
Direct Digital Synthesis (DDS)  
■
xDSL Modems  
■
Arbitrary Waveform Generation  
Automated Test Equipment  
■
■
Instrumentation  
The LTC1668 is available in a 28-pin SSOP and is fully  
specified over the industrial temperature range.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
16-Bit, 50Msps DAC  
5V  
0.1µF  
Single Tone SFDR  
–5  
V
LTC1668  
DD  
f
f
= 25Msps  
REFOUT  
2.5V  
CLOCK  
= 1.007MHz  
–15  
–25  
–35  
–45  
–55  
–65  
–75  
–85  
–95  
–105  
OUT  
REFERENCE  
R
SET  
2k  
AMPLITUDE = 0dBFS  
0.1µF  
I
REFIN  
= –8.5dBm  
SFDR = 86dBc  
52.3Ω  
52.3Ω  
I
I
OUT A  
+
+
–
16-BIT  
HIGH SPEED  
DAC  
1V  
P-P  
DIFFERENTIAL  
V
OUT  
OUT B  
–
COMP1  
COMP2  
LADCOM  
C1  
0.1µF  
V
SS  
AGND DGND CLK  
DB15  
DB0  
C2  
0.1µF  
1668 TA01  
0.05  
6.3  
12.55  
FREQUENCY (1.25MHz/DIV)  
CLOCK 16-BIT DATA  
INPUT INPUT  
0.1µF  
1668 G01  
–5V  
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.  
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-  
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.  
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