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LT1469

更新时间： 2023-12-20 18:44:05
品牌 Logo 应用领域
亚德诺 - ADI 放大器运算放大器
页数 文件大小 规格书
20页 2389K
描述
双通道、90MHz、22V/μs、准确度达16位的运算放大器

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LT1469 数据手册

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LT1469  
Dual 90MHz, 22V/µs  
16-Bit Accurate Operational Amplifier  
FEATURES  
DESCRIPTION  
The LT®1469 is a dual, precision high speed operational  
amplifierwith16-bitaccuracyand900nssettlingto150µV  
for 10V steps. This unique blend of precision and AC  
performance makes the LT1469 the optimum choice for  
highaccuracyapplicationssuchasDACcurrent-to-voltage  
conversion and ADC buffers. The initial accuracy and drift  
characteristicsoftheinputoffsetvoltageandinvertinginput  
bias current are tailored for inverting applications.  
n
90MHz Gain Bandwidth, f = 100kHz  
n
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n
n
n
n
n
n
n
n
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Maximum Input Offset Voltage: 125µV  
Settling Time: 900ns (A = –1, 150µV, 10V Step)  
22V/µs Slew Rate  
Low Distortion: –96.5dB for 100kHz, 10V  
Maximum Input Offset Voltage Drift: 3µV/°C  
Maximum Inverting Input Bias Current: 10nA  
Minimum DC Gain: 300V/mV  
Minimum Output Swing into 2k: 12.8V  
Unity-Gain Stable  
Input Noise Voltage: 5nV/√Hz  
Input Noise Current: 0.6pA/√Hz  
Total Input Noise Optimized for 1kΩ < R < 20kΩ  
Specified at 5V and 15V Supplies  
V
P-P  
The 90MHz gain bandwidth ensures high open-loop gain  
at frequency for reducing distortion. In noninverting ap-  
plications such as an ADC buffer, the low distortion and  
DC accuracy allow full 16-bit AC and DC performance.  
S
The 22V/µs slew rate of the LT1469 improves large signal  
performance compared to other precision op amps in  
applications such as active filters and instrumentation  
amplifiers.  
APPLICATIONS  
n
Precision Instrumentation  
The LT1469 is available in a space saving 4mm × 4mm  
leadless package, as well as in small outline and DIP pack-  
ages. A single version, the LT1468, is also available.  
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High Accuracy Data Acquisition Systems  
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16-Bit DAC Current-to-Voltage Converter  
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ADC Buffer  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
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Low Distortion Active Filters  
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Photodiode Amplifiers  
TYPICAL APPLICATION  
16-Bit DAC I-to-V Converter and Reference Inverter for Bipolar Output Swing (VOUT = –10V to 10V)  
15V  
Bipolar Multiplying Mode (LTC1597)  
Signal-to-(Noise + Distortion)  
V
REF  
40  
+
DAC INPUT CODE = ALL ZEROS  
1/2 LT1469  
50  
60  
V
= 20V  
REF  
P-P  
2.4µs SETTLING TIME  
TO 1LSB ON 20V STEP  
–
15pF  
70  
15pF  
80  
12k 12k  
12k  
12k  
500kHz FILTER  
–
16 BITS  
DAC INPUTS  
LTC1597  
90  
R
LPF  
1/2 LT1469  
+
V
OUT  
100  
110  
80kHz FILTER  
C
30kHz  
FILTER  
LPF  
10  
100  
1k  
10k  
100k  
–15V  
1469 TA01  
FREQUENCY (Hz)  
1469 TA01a  
1469fb  
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