LT1568IGN Analog Devices Integrated Circuit (Small Outline Packages) In Stock
LT1568IGN is a dual 4th-order active low-pass and band-pass filter IC from Analog Devices with a cutoff frequency range of 200 kHz to 10 MHz, operating from a single 5 V or 3 V supply in a 16-pin SSOP package. It can be configured as a single 4-pole or matched pair of 2-pole Butterworth filters. Available from stock worldwide with competitive pricing.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- LT1568IGN Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Non-compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT1568IGN?
- Dual 4th-order active filter with 200 kHz to 10 MHz cutoff frequency range supports wideband signal conditioning without external passive components
- Configurable as a single 4-pole or matched pair of 2-pole low-pass filters, offering flexible topology for diverse signal-chain designs
- Single 5 V or 3 V supply operation in 16-pin SSOP package enables integration into low-voltage, space-constrained systems
What is LT1568IGN used for?
LT1568IGN is used in communications and data-acquisition systems that require precise high-frequency low-pass filtering up to 10 MHz, such as anti-aliasing filters in front of ADCs sampling at 20 MHz or higher. Its matched dual-filter architecture is well suited to I/Q signal processing in software-defined radio and quadrature demodulation chains. The single 3 V or 5 V supply compatibility makes it straightforward to integrate into portable instruments and battery-powered measurement devices.
What are the specifications of LT1568IGN?
| Reach Compliance Code | Not Compliant |
| YTEOL | 0 |
| Additional Feature | SINGLE 4-POLE OR MATCHED PAIR OF 2-POLE LOWPASS FILTERS; CAN OPERATE FROM SINGLE 5V OR 3V NOM SUPPLY |
| Center or Cutoff Freq Rng-Max | 10000kHz |
| Center or Cutoff Freq Rng-Min | 200kHz |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e0 |
| Neg Supply Voltage-Max (Vsup) | -5.5 V |
| Neg Supply Voltage-Min (Vsup) | -1.35 V |
| Neg Supply Voltage-Nom (Vsup) | -5 V |
| Number of Functions | 2 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Poles and Zeros | 2 AND 0 |
| Qualification Status | Not Qualified |
| Response | BANDPASS/LOWPASS |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.35V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.635mm |
| Terminal Position | DUAL |
| Transfer Characteristics | BUTTERWORTH/BESSEL/CHEBYSHEV |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Non-compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the LT1568IGN datasheet?
LT1568IGN Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT1568IGN?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What cutoff frequency range does LT1568IGN support, and how is it set?
LT1568IGN supports a cutoff frequency range from 200 kHz to 10 MHz, set by external resistors without capacitors. This resistor-programmable approach allows designers to precisely tune the 4th-order low-pass or band-pass response in production without switching filter topology or package.
Can LT1568IGN be used as an anti-aliasing filter for a 20 MSPS ADC?
Yes, LT1568IGN is an effective anti-aliasing filter for ADCs sampling at 20 MSPS or higher, as its 4th-order response at up to 10 MHz cutoff frequency provides 80 dB per decade attenuation, strongly suppressing aliases above the Nyquist frequency of 10 MHz while passing the desired signal band.
What supply voltages does LT1568IGN accept, and what is the negative supply range?
LT1568IGN operates from a single 5 V or 3 V supply, or from a split supply with a negative rail ranging from -1.35 V to -5.5 V. This flexibility covers both low-voltage digital systems and traditional ±5 V analog supply rails common in instrumentation designs.
What is the difference between using LT1568IGN as a single 4-pole filter versus two matched 2-pole filters?
When configured as a single 4-pole filter, LT1568IGN cascades both internal 2-pole sections to achieve a steeper 80 dB per decade roll-off from a single input. When used as two matched 2-pole filters, each section independently processes a separate signal channel, supporting stereo or I/Q signal paths with 40 dB per decade per channel from a single 16-pin package.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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