Features and Benefits
- DC Gain Linearity: 14 Bits
- Maximum DC Offset: ±1.5mV
- DC Offset TempCo: 7µV/°C
- Device Fully Tested at fCUTOFF = 80kHz
- Maximum Cutoff Frequency: 120kHz (VS = ±8V)
- Drives 1kΩ Load with 0.02% THD or Better
- Signal-to-Noise Ratio: 90dB
- Input Impedance: 500MΩ
- Selectable Elliptic or Linear Phase Response
- Operates from Single 5V up to ±8V Power Supplies
- Available in an 18-Pin SO Wide Package
The LTC1066-1 is an 8th order elliptic lowpass filter which simultaneously provides clock-tunability and DC accuracy. The unique and proprietary architecture of the filter allows 14 bits of DC gain linearity and a maximum of 1.5mV DC offset. An external RC is required for DC accurate operation. With ±7.5V supplies, a 20k resistor and a 1µF capacitor, the cutoff frequency can be tuned from 800Hz to 100kHz. A clock-tunable 10Hz to 100kHz operation can also be achieved (see Typical Application section).
The filter does not require any external active components such as input/output buffers. The input/output impedance is 500MΩ/0.1Ω and the output of the filter can source or sink 40mA. When pin 8 is connected to V+ , the clock-to-cutoff frequency ratio is 50:1 and the input signal is sampled twice per clock cycle to lower the risk of aliasing. For frequencies up to 0.75fCUTOFF , the passband ripple is ±0.15dB. The gain at fCUTOFF is -1dB and the filter’s stopband attenuation is 80dB at 2.3fCUTOFF . Linear phase operation is also available with a clock-to-cutoff frequency ratio of 100:1 when pin 8 is connected to ground.
The LTC1066-1 is available in an 18-pin SO Wide package..
- Data Acquisition Systems
- Anti-Aliasing Filters
- Smoothing Filters
- Audio Signal Processing
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.