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LTC1272-3ACS PDF预览

LTC1272-3ACS

更新时间: 2024-02-10 23:10:47
品牌 Logo 应用领域
凌特 - Linear 转换器
页数 文件大小 规格书
20页 339K
描述
12-Bit, 3us, 250kHz Sampling A/D Converter

LTC1272-3ACS 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:DIP包装说明:DIP, DIP24,.3
针数:24Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.65最大模拟输入电压:15 V
最小模拟输入电压:-0.3 V最长转换时间:3 µs
转换器类型:ADC, SUCCESSIVE APPROXIMATIONJESD-30 代码:R-GDIP-T24
JESD-609代码:e0最大线性误差 (EL):0.012%
位数:12功能数量:1
端子数量:24最高工作温度:125 °C
最低工作温度:-55 °C输出位码:BINARY, OFFSET BINARY
输出格式:PARALLEL, WORD封装主体材料:CERAMIC, GLASS-SEALED
封装代码:DIP封装等效代码:DIP24,.3
封装形状:RECTANGULAR封装形式:IN-LINE
峰值回流温度(摄氏度):NOT SPECIFIED电源:5 V
认证状态:Not Qualified采样速率:0.25 MHz
采样并保持/跟踪并保持:SAMPLE座面最大高度:5.715 mm
子类别:Analog to Digital Converters最大压摆率:30 mA
标称供电电压:5 V表面贴装:NO
技术:BICMOS温度等级:MILITARY
端子面层:Tin/Lead (Sn/Pb)端子形式:THROUGH-HOLE
端子节距:2.54 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:7.62 mm
Base Number Matches:1

LTC1272-3ACS 数据手册

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LTC1272  
12-Bit, 3µs, 250kHz  
Sampling A/D Converter  
U
DESCRIPTIO  
EATURE  
S
F
The LTC1272 is a 3µs, 12-bit, successive approximation  
sampling A/D converter. It has the same pinout as the  
industry standard AD7572 and offers faster conversion  
time, on-chip sample-and-hold, and single supply opera-  
tion.ItusesLTBiCMOSTM switched-capacitortechnologyto  
combine a high speed 12-bit ADC with a fast, accurate  
sample-and-hold and a precision reference.  
AD7572 Pinout  
12-Bit Resolution  
3µs and 8µs Conversion Times  
On-Chip Sample-and-Hold  
Up to 250kHz Sample Rates  
5V Single Supply Operation  
No Negative Supply Required  
On-Chip 25ppm/°C Reference  
75mW (Typ) Power Consumption  
24-Pin Narrow DIP and SOL Packages  
ESD Protected on All Pins  
The LTC1272 operates with a single 5V supply but can also  
accept the 5V/–15V supplies required by the AD7572 (Pin  
23, the negative supply pin of the AD7572, is not connected  
ontheLTC1272). TheLTC1272hasthesame0Vto5Vinput  
range as the AD7572 but, to achieve single supply opera-  
tion, it provides a 2.42V reference output instead of the  
5.25V of the AD7572. It plugs in for the AD7572 if the  
reference capacitor polarity is reversed and a 1µs sample-  
and-hold acquisition time is allowed between conversions.  
O U  
PPLICATI  
A
S
High Speed Data Acquisition  
Digital Signal Processing (DSP)  
Multiplexed Data Acquisition Systems  
Single Supply Systems  
The output data can be read as a 12-bit word or as two  
8-bit bytes. This allows easy interface to both 8-bit and  
higher processors. The LTC1272 can be used with a  
crystal or an external clock and comes in speed grades of  
3µs and 8µs.  
LTBiCMOS is a trademark of Linear Technology Corporation  
U
O
TYPICAL APPLICATI  
1024 Point FFT, fS = 250kHz, fIN = 10kHz  
Single 5V Supply, 3µs, 12-Bit Sampling ADC  
5V  
LTC1272  
0
ANALOG INPUT  
A
V
V
DD  
IN  
(0V TO 5V)  
2.42V  
REF  
OUTPUT  
–20  
+
S
(N+D)  
NC  
BUSY  
CS  
V
= 72.1  
REF  
10µF  
µP  
0.1µF  
+
0.1µF  
10µF  
AGND  
D11 (MSB)  
D10  
–40  
–60  
CONTROL  
LINES  
RD  
–80  
D9  
HBEN  
CLK OUT  
CLK IN  
D0/8  
D8  
–100  
–120  
–140  
D7  
D6  
8 OR 12-BIT  
PARALLEL  
BUS  
D5  
D1/9  
0
20  
40  
60  
80  
100  
120  
D4  
D2/10  
D3/11  
FREQUENCY (kHz)  
DGND  
LTC1272 • TA02  
LTC1272 • TA01  
1

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