LTC1068
PRODUCTIONClock-Tunable, Quad Second Order, Filter Building Blocks
- Part Models
- 18
- 1ku List Price
- Starting From $7.56
Part Details
- Four Identical 2nd Order Filter Sections in an SSOP Package
- 2nd Order Section Center Frequency Error:
- ±0.3% Typical and ±0.8% Maximum
- Low Noise per 2nd Order Section, Q ≤ 5:
- LTC1068-200 50µVRMS, LTC1068 50µVRMS
- LTC1068-50 70µVRMS, LTC1068-25 90µVRMS
- Low Power Supply Current: 4.5mA, Single 5V, LTC1068-50
- Operation with ±5V Power Supply, Single 5V Supply or Single 3.3V Supply
The LTC1068 product family consists of four monolithic clock-tunable filter building blocks. Each product contains four matched, low noise, high accuracy 2nd order switched-capacitor filter sections. An external clock tunes the center frequency of each 2nd order filter section. The LTC1068 products differ only in their clock-to-center frequency ratio. The clock-to-center frequency ratio is set to 200:1 (LTC1068-200), 100:1 (LTC1068), 50:1 (LTC1068-50) or 25:1 (LTC1068-25). External resistors can modify the clock-to-center frequency ratio. High performance, quad 2nd order, dual 4th order or 8th order filters can be designed with an LTC1068 family product. Designing filters with an LTC1068 product is fully supported by FilterCAD™ filter design software for Windows.
The LTC1068 products are available in a 28-pin SSOP surface mount package. A customized version of an LTC1068 family product can be obtained in a 16-lead SO package with internal thin-film resistors. Please contact LTC Marketing for details.
Applications
- Lowpass or Highpass Filters:
- LTC1068-200, 0.5Hz to 25kHz;
- LTC1068, 1Hz to 50kHz;
- LTC1068-50, 2Hz to 50kHz;
- LTC1068-25, 4Hz to 200kHz
- Bandpass or Bandreject (Notch) Filters:
- LTC1068-200, 0.5Hz to 15kHz;
- LTC1068, 1Hz to 30kHz;
- LTC1068-50, 2Hz to 30kHz;
- LTC1068-25, 4Hz to 140kHz
Documentation
Data Sheet 1
Reliability Data 1
User Guide 1
Technical Articles 4
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. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC1068-200CG#PBF | 28-Lead SSOP | ||
| LTC1068-200CG#TRPBF | 28-Lead SSOP | ||
| LTC1068-200IG#PBF | 28-Lead SSOP | ||
| LTC1068-200IG#TRPBF | 28-Lead SSOP | ||
| LTC1068-25CG#PBF | 28-Lead SSOP | ||
| LTC1068-25CG#TRPBF | 28-Lead SSOP | ||
| LTC1068-25IG#PBF | 28-Lead SSOP | ||
| LTC1068-25IG#TRPBF | 28-Lead SSOP | ||
| LTC1068-50CG#PBF | 28-Lead SSOP | ||
| LTC1068-50CG#TRPBF | 28-Lead SSOP | ||
| LTC1068-50IG#PBF | 28-Lead SSOP | ||
| LTC1068-50IG#TRPBF | 28-Lead SSOP | ||
| LTC1068CG#PBF | 28-Lead SSOP | ||
| LTC1068CG#TRPBF | 28-Lead SSOP | ||
| LTC1068CN#PBF | 24-Lead PDIP (Narrow 0.3 Inch) | ||
| LTC1068IG#PBF | 28-Lead SSOP | ||
| LTC1068IG#TRPBF | 28-Lead SSOP | ||
| LTC1068IN#PBF | 24-Lead PDIP (Narrow 0.3 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Aug 6, 2022 - 22_0171 Laser Top Mark Conversion for SSOP Packages Assembled in PNG |
||
| LTC1068-200CG#PBF | PRODUCTION | |
| LTC1068-200CG#TRPBF | PRODUCTION | |
| LTC1068-200IG#PBF | PRODUCTION | |
| LTC1068-200IG#TRPBF | PRODUCTION | |
| LTC1068-25CG#PBF | PRODUCTION | |
| LTC1068-25CG#TRPBF | PRODUCTION | |
| LTC1068-25IG#PBF | PRODUCTION | |
| LTC1068-25IG#TRPBF | PRODUCTION | |
| LTC1068-50CG#PBF | PRODUCTION | |
| LTC1068-50CG#TRPBF | PRODUCTION | |
| LTC1068-50IG#PBF | PRODUCTION | |
| LTC1068-50IG#TRPBF | PRODUCTION | |
| LTC1068CG#PBF | PRODUCTION | |
| LTC1068CG#TRPBF | PRODUCTION | |
| LTC1068IG#PBF | PRODUCTION | |
| LTC1068IG#TRPBF | PRODUCTION | |
|
Mar 7, 2019 - 19_0046 Assembly Transfer of 18,20,24,28 Lead PDIP to Cirtek |
||
| LTC1068CN#PBF | PRODUCTION | |
| LTC1068IN#PBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Silicon Oscillators 2 | ||
| LTC6900 | PRODUCTION | Low Power, 1kHz to 20MHz Resistor Set SOT-23 Oscillator |
| LTC6930-X.XX | 32.768kHz to 8.192MHz Precision µPower Oscillators | |
Tools & Simulations
LTspice 3
Models for the following parts are available in LTspice:
- LTC1068
- LTC1068-200
- LTC1068-25
- LTC1068-50
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
LTC1068-200CG | Universal Low Noise 8th Order Filter Building Block (200:1, fc to 25KHz)
Resources
LTC1068-25CG | Universal High Speed 8th Order Filter Building Block (25:1, fc to 200KHz)
Resources
LTC1068-50CG | Universal Low Power 8th Order Filter Building Block (50:1, fc to 25KHz)
Resources
LTC1068CG | Universal Low Noise 8th Order Filter Building Block (100:1, fc to 50KHz)