Overview
The LTC1563-2IGN#PBF is a member of the LTC1563 family of active RC, 4th order lowpass filters produced by Analog Devices Inc. This component is designed for ease of use, featuring rail-to-rail inputs and outputs, and a low DC offset, making it suitable for systems with up to 16-bit resolution. The LTC1563-2 specifically provides a unity-gain Butterworth response, while the LTC1563-3 offers a unity-gain Bessel response. The proprietary architecture allows for simple resistor calculations to set the cutoff frequency, making it versatile for various applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Total Supply Voltage (VS), HS Mode | 3 | 11 | V | ||
| Total Supply Voltage (VS), LP Mode | 2.7 | 11 | V | ||
| DC Offset Voltage, LP Mode | VS = 2.7V, fC = 25.6kHz, RFIL = 100k | ±2 | ±7 | mV | |
| Cutoff Frequency Range, HS Mode | VS = 3V | 0.256 | 256 | kHz | |
| Cutoff Frequency Accuracy, HS Mode | VS = 3V, RFIL = 100k, fC = 25.6kHz | –2.0 | ±1.5 | 3.5 | % |
| Output Voltage Swing High (LPB Pin) | VS = 3V, fC = 25.6kHz, RFIL = 100k, RL = 10k to GND | 2.9 | 2.95 | V | |
| Package | 16-Lead SSOP (Narrow 0.15 Inch) |
Key Features
- Rail-to-rail inputs and outputs
- Low DC offset voltage, suitable for up to 16-bit resolution systems
- Unity-gain Butterworth (LTC1563-2) or Bessel (LTC1563-3) response
- Simple resistor calculation for setting the cutoff frequency: R = 10k (256kHz/fC)
- Low power mode and near zero power shutdown mode
- High speed (HS) and low power (LP) modes
- Compact 16-Lead SSOP (Narrow 0.15 Inch) package
Applications
The LTC1563-2IGN#PBF is suitable for a variety of applications requiring precise lowpass filtering, including:
- Audio and video signal processing
- Medical devices requiring high signal integrity
- Industrial control systems
- Test and measurement equipment
- Any system needing high-quality, low-noise filtering with adjustable cutoff frequencies
Q & A
- What is the primary function of the LTC1563-2IGN#PBF?
The primary function is to act as a 4th order active RC lowpass filter with rail-to-rail inputs and outputs.
- What types of responses does the LTC1563 family offer?
The LTC1563-2 offers a unity-gain Butterworth response, while the LTC1563-3 offers a unity-gain Bessel response.
- How is the cutoff frequency set for the LTC1563?
The cutoff frequency is set using a simple resistor calculation: R = 10k (256kHz/fC).
- What are the operating voltage ranges for the LTC1563?
The total supply voltage ranges from 2.7V to 11V in LP mode and 3V to 11V in HS mode.
- What is the DC offset voltage of the LTC1563?
The DC offset voltage is typically ±2 to ±7 mV in LP mode.
- What are the key features of the low power mode?
The low power mode reduces the supply current by an order of magnitude and includes a near zero power shutdown mode.
- What is the package type of the LTC1563-2IGN#PBF?
The component is packaged in a 16-Lead SSOP (Narrow 0.15 Inch).
- What are some common applications for the LTC1563?
Common applications include audio and video signal processing, medical devices, industrial control systems, and test and measurement equipment.
- How does the LTC1563 handle high and low frequency applications?
The component operates in both high speed (HS) and low power (LP) modes to handle different frequency applications efficiently.
- What is the significance of the proprietary architecture of the LTC1563?
The proprietary architecture allows for a simple resistor calculation to set the cutoff frequency, making the component easy to use and design with.
