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Features
- 1kHz to 68MHz Square Wave Output
- 0.5% (Typ) Initial Frequency Accuracy
- Frequency Error <1.1% Over All Settings
- 10ppm/°C Typical Frequency Drift Over Temperature
- 0.1% Resolution
- 1.7mA Typical Supply Current (f < 1MHz, VS = 2.7V)
- 2.7V to 5.5V Single Supply Operation
- Jitter <0.4% Typical 1kHz to 8MHz
- Easy to Use SPI (LTC6903) or I2C (LTC6904) Serial Interface
- Output Enable Pin
- –55°C to 125°C Operation
- MS8 Package
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The LTC6903/LTC6904 are low power self contained digital frequency sources providing a precision frequency from 1kHz to 68MHz, set through a serial port. The LTC6903/ LTC6904 require no external components other than a power supply bypass capacitor, and they operate over a single wide supply range of 2.7V to 5.5V.
The LTC6903/LTC6904 feature a proprietary feedback loop that linearizes the relationship between digital control setting and frequency, resulting in a very simple frequency setting equation:
where OCT is a 4-bit digital code and DAC is a 10-bit digital code.
The LTC6903 is controlled by a convenient SPI compatible serial interface. The LTC6904 uses an industry standard I2C compatible interface.
Applications
- Precision Digitally Controlled Oscillator
- Power Management
- Direct Digital Frequency Synthesis (DDS) Replacement
- Replacement for DAC and VCO
- Switched Capacitor Filter Clock
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LTC6904
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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 |
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| LTC6904CMS8#PBF |
8-Lead MSOP
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| LTC6904CMS8#TRPBF |
8-Lead MSOP
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| LTC6904HMS8#PBF |
8-Lead MSOP
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| LTC6904HMS8#TRPBF |
8-Lead MSOP
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| LTC6904IMS8#PBF |
8-Lead MSOP
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| LTC6904IMS8#TRPBF |
8-Lead MSOP
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| LTC6904MPMS8#PBF |
8-Lead MSOP
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| LTC6904MPMS8#TRPBF |
8-Lead MSOP
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- LTC6904CMS8#PBF
- Pin/Package Drawing
- 8-Lead MSOP
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
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SamacSys
- LTC6904CMS8#TRPBF
- Pin/Package Drawing
- 8-Lead MSOP
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- LTC6904HMS8#PBF
- Pin/Package Drawing
- 8-Lead MSOP
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- LTC6904HMS8#TRPBF
- Pin/Package Drawing
- 8-Lead MSOP
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- LTC6904IMS8#PBF
- Pin/Package Drawing
- 8-Lead MSOP
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- LTC6904IMS8#TRPBF
- Pin/Package Drawing
- 8-Lead MSOP
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- LTC6904MPMS8#PBF
- Pin/Package Drawing
- 8-Lead MSOP
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- LTC6904MPMS8#TRPBF
- Pin/Package Drawing
- 8-Lead MSOP
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
Filter by Model
Part Models
Product Lifecycle
PCN
Feb 3, 2020
- 20_0128
Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC
LTC6904CMS8#PBF
PRODUCTION
LTC6904CMS8#TRPBF
PRODUCTION
LTC6904HMS8#PBF
PRODUCTION
LTC6904HMS8#TRPBF
PRODUCTION
LTC6904IMS8#PBF
PRODUCTION
LTC6904IMS8#TRPBF
PRODUCTION
LTC6904MPMS8#PBF
PRODUCTION
LTC6904MPMS8#TRPBF
PRODUCTION
Jun 5, 2024
- 24_0003
Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)
LTC6904MPMS8#PBF
PRODUCTION
LTC6904MPMS8#TRPBF
PRODUCTION
Filter by Model
Part Models
Product Lifecycle
PCN
Feb 3, 2020
- 20_0128
Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC
LTC6904CMS8#PBF
PRODUCTION
LTC6904CMS8#TRPBF
PRODUCTION
LTC6904HMS8#PBF
PRODUCTION
LTC6904HMS8#TRPBF
PRODUCTION
LTC6904IMS8#PBF
PRODUCTION
LTC6904IMS8#TRPBF
PRODUCTION
LTC6904MPMS8#PBF
PRODUCTION
LTC6904MPMS8#TRPBF
PRODUCTION
Jun 5, 2024
- 24_0003
Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)
LTC6904MPMS8#PBF
PRODUCTION
LTC6904MPMS8#TRPBF
PRODUCTION
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