Overview
The LTC1562IG-2#TRPBF, produced by Analog Devices Inc., is a low noise, low distortion continuous-time filter integrated circuit. This device is optimized for a wide range of applications requiring high dynamic range and flexibility in filter configurations. It contains four matched, 2nd order, 3-terminal universal continuous-time filter blocks, each with a virtual-ground input node and two rail-to-rail outputs. This allows for various filter responses such as lowpass, bandpass, highpass, allpass, notch, and elliptic filters without the need for a clock signal.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Filter Type | Universal, Continuous-Time | |
| Number of Filters | 4 | |
| Filter Order | Up to 8th order (by cascading 2nd order sections) | |
| Frequency - Cutoff or Center | 10kHz to 150kHz | Hz |
| Voltage - Supply | Single 5V power supply | V |
| Signal-to-Noise Ratio | Up to 94dB | dB |
| Input Current Limit | < 1mA | mA |
| Output Load Capability | Nominal net load of 5kΩ and 30pF |
Key Features
- Four independent 2nd order filter blocks with virtual-ground input nodes and rail-to-rail outputs.
- Programmable center frequency, Q, and gain using external resistors.
- Supports various filter responses: lowpass, bandpass, highpass, allpass, notch, and elliptic.
- No clock signal required.
- Low noise and low distortion performance.
- Built-in gain capability for low level signal amplification.
- Ability to configure as dual 4th order Butterworth lowpass filter with high signal-to-noise ratio.
Applications
The LTC1562IG-2#TRPBF is designed for applications where dynamic range and signal integrity are crucial. It is particularly useful in:
- Audio processing and filtering.
- Medical devices requiring high signal-to-noise ratios.
- Industrial control systems needing precise signal filtering.
- Telecommunication systems for signal conditioning.
- Any application requiring flexible and high-performance continuous-time filtering.
Q & A
- What is the LTC1562IG-2#TRPBF?
The LTC1562IG-2#TRPBF is a low noise, low distortion continuous-time filter integrated circuit produced by Analog Devices Inc.
- How many filter blocks does the LTC1562IG-2#TRPBF contain?
The device contains four independent 2nd order filter blocks.
- What types of filter responses can be achieved with the LTC1562IG-2#TRPBF?
The device supports lowpass, bandpass, highpass, allpass, notch, and elliptic filter responses.
- What is the typical signal-to-noise ratio of the LTC1562IG-2#TRPBF?
The signal-to-noise ratio can be up to 94dB when configured as a dual 4th order Butterworth lowpass filter.
- How is the center frequency of the filter blocks programmed?
The center frequency is programmed using external resistors according to simple design formulas.
- What is the maximum input current limit for good distortion performance?
The input current should be limited to less than 1mA for good distortion performance.
- Can the LTC1562IG-2#TRPBF be used for low level signal amplification?
Yes, the device has built-in gain capability for amplifying low level signals.
- What is the typical output load capability of the LTC1562IG-2#TRPBF?
The outputs are designed to drive a nominal net load of 5kΩ and 30pF.
- Does the LTC1562IG-2#TRPBF require a clock signal?
No, the device does not require a clock signal.
- What are some common applications of the LTC1562IG-2#TRPBF?
Common applications include audio processing, medical devices, industrial control systems, and telecommunication systems.
