Overview
The LTC1562IG#PBF, produced by Analog Devices Inc., is a low noise, low distortion continuous-time filter. This device is optimized for a center frequency (fO) range of 10kHz to 150kHz and features rail-to-rail inputs and outputs. It consists of four independent 2nd order filter blocks that can be cascaded to form higher order filters, such as one 8th order or two 4th order filters. Each block provides lowpass and bandpass outputs, and highpass, allpass, notch, and elliptic responses can also be realized with appropriate external circuitry.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Center Frequency (fO) | 10kHz | 150kHz | |||
| Total Harmonic Distortion (THD) | fIN = 20kHz, 2.8VP-P, RL = 5k, CL = 30pF | -100 dB | |||
| Shutdown Supply Current | SHDN Pin to V+, VS = ±2.375V | 1.0 µA | 15 µA | µA | |
| Shutdown Delay | SHDN Pin Steps from 0V to V+ | 20 µs | µs | ||
| Shutdown Recovery Delay | SHDN Pin Steps from V+ to 0V | 100 µs | µs | ||
| Supply Voltage | 5V to 10V Total | V | |||
| Package | 20-Lead SSOP |
Key Features
- Rail-to-rail inputs and outputs
- No clock required
- Four independent 2nd order filter blocks
- Programmable center frequency, Q, and gain using external resistors
- Lowpass, bandpass, highpass, allpass, notch, and elliptic filter responses possible
- High dynamic range, up to 118dB with ±5V supply
- DC accurate to 3mV (typical)
- “Zero-Power” shutdown mode
- Single or dual supply operation
Applications
The LTC1562IG#PBF is designed for applications where dynamic range and low noise are critical. It is suitable for a variety of filtering tasks, including:
- Dual 4th order Butterworth lowpass filters with high signal-to-noise ratios
- Audio and video signal processing
- Medical and industrial instrumentation
- Telecommunications and data acquisition systems
- Any application requiring precise and flexible analog filtering
Q & A
- What is the center frequency range of the LTC1562IG#PBF?
The center frequency range is from 10kHz to 150kHz.
- How many filter blocks does the LTC1562IG#PBF contain?
The device contains four independent 2nd order filter blocks.
- What types of filter responses can be achieved with the LTC1562IG#PBF?
Lowpass, bandpass, highpass, allpass, notch, and elliptic filter responses are possible.
- What is the typical dynamic range of the LTC1562IG#PBF?
The dynamic range can be as high as 118dB with a ±5V supply.
- Does the LTC1562IG#PBF require a clock signal?
No, it does not require a clock signal.
- What is the package type of the LTC1562IG#PBF?
The package type is 20-Lead SSOP.
- What is the shutdown current of the LTC1562IG#PBF?
The shutdown supply current is typically 1.0 µA with VS = ±2.375V.
- Can the LTC1562IG#PBF operate on a single or dual supply?
Yes, it can operate on either a single or dual supply, with a total voltage range of 5V to 10V.
- How is the center frequency programmed on the LTC1562IG#PBF?
The center frequency is programmed using three external resistors.
- What is the DC accuracy of the LTC1562IG#PBF?
The DC accuracy is typically 3mV.
