CDCEL937 Series
Programmable 3-PLL VCXO clock synthesizer with 1.8-V LVCMOS outputs
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Programmable 3-PLL VCXO clock synthesizer with 1.8-V LVCMOS outputs
| Part | PLL | Frequency - Max [Max] | Type | Output | Number of Circuits | Input | Voltage - Supply [Min] | Voltage - Supply [Max] | Ratio - Input:Output [custom] | Ratio - Input:Output [custom] | Supplier Device Package | Divider/Multiplier | Mounting Type | Package / Case | Package / Case | Package / Case | Operating Temperature [Min] | Operating Temperature [Max] | Differential - Input:Output [custom] | Differential - Input:Output [custom] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments CDCEL937PW | Yes with Bypass | 230 MHz | Clock/Frequency Synthesizer | LVCMOS | 1 | Crystal, LVCMOS | 1.7 V | 1.9 V | 1 | 7 | 20-TSSOP | Yes/No | Surface Mount | 0.173 in | 4.4 mm | 20-TSSOP | -40 °C | 85 °C | ||
Texas Instruments CDCEL937PWR | Yes with Bypass | 230 MHz | Clock/Frequency Synthesizer | LVCMOS | 1 | Crystal, LVCMOS | 1.7 V | 1.9 V | 1 | 7 | 20-TSSOP | Yes/No | Surface Mount | 0.173 in | 4.4 mm | 20-TSSOP | -40 °C | 85 °C | ||
Texas Instruments CDCEL937PWRG4 | Yes with Bypass | 230 MHz | Clock/Frequency Synthesizer | LVCMOS | 1 | Crystal, LVCMOS | 1.7 V | 1.9 V | 1 | 7 | 20-TSSOP | Yes/No | Surface Mount | 0.173 in | 4.4 mm | 20-TSSOP | -40 °C | 85 °C |
Key Features
• Member of Programmable Clock Generator FamilyCDCEx913: 1PLL, 3 OutputsCDCEx925: 2PLL, 5 OutputsCDCEx937: 3PLL, 7 OutputsCDCEx949: 4LL, 9 OutputsIn-System Programmability and EEPROMSerial Programmable Volatile RegisterNonvolatile EEPROM to Store Customer SettingFlexible Input Clocking ConceptExternal Crystal: 8MHz to 32MHzOn-Chip VCXO: Pull Range ±150ppmSingle-Ended LVCMOS up to 160MHzFree Selectable Output Frequency up to 230MHzLow-Noise PLL CorePLL Loop Filter Components IntegratedLow Period Jitter (Typical 60ps)Separate Output Supply PinsCDCE937: 3.3V and 2.5VCDCEL937: 1.8VFlexible Clock DriverThree User-Definable Control Inputs [S0/S1/S2], for Example, SSC Selection, Frequency Switching, Output Enable or Power DownGenerates Highly Accurate Clocks for Video, Audio, USB, IEEE1394, RFID, Bluetooth™, WLAN, Ethernet™, and GPSGenerates Common Clock Frequencies Used With TI DaVinci™, OMAP™, DSPsProgrammable SSC ModulationEnables 0PPM Clock Generation1.8V Device Power SupplyWide Temperature Range –40°C to 85°CPackaged in TSSOPDevelopment and Programming Kit for Easy PLL Design and Programming (TI Pro-Clock™)Member of Programmable Clock Generator FamilyCDCEx913: 1PLL, 3 OutputsCDCEx925: 2PLL, 5 OutputsCDCEx937: 3PLL, 7 OutputsCDCEx949: 4LL, 9 OutputsIn-System Programmability and EEPROMSerial Programmable Volatile RegisterNonvolatile EEPROM to Store Customer SettingFlexible Input Clocking ConceptExternal Crystal: 8MHz to 32MHzOn-Chip VCXO: Pull Range ±150ppmSingle-Ended LVCMOS up to 160MHzFree Selectable Output Frequency up to 230MHzLow-Noise PLL CorePLL Loop Filter Components IntegratedLow Period Jitter (Typical 60ps)Separate Output Supply PinsCDCE937: 3.3V and 2.5VCDCEL937: 1.8VFlexible Clock DriverThree User-Definable Control Inputs [S0/S1/S2], for Example, SSC Selection, Frequency Switching, Output Enable or Power DownGenerates Highly Accurate Clocks for Video, Audio, USB, IEEE1394, RFID, Bluetooth™, WLAN, Ethernet™, and GPSGenerates Common Clock Frequencies Used With TI DaVinci™, OMAP™, DSPsProgrammable SSC ModulationEnables 0PPM Clock Generation1.8V Device Power SupplyWide Temperature Range –40°C to 85°CPackaged in TSSOPDevelopment and Programming Kit for Easy PLL Design and Programming (TI Pro-Clock™)
Description
AI
The CDCE937 and CDCEL937 devices are modular PLL-based low cost, high-performance, programmable clock synthesizers, multipliers and dividers. The devices generate up to 7 output clocks from a single input frequency. Each output can be programmed in-system for any clock frequency up to 230MHz, using up to three independent configurable PLLs.
The CDCEx937 has separate output supply pins, VDDOUT, which is 1.8V for CDCEL937 and to 2.5V to 3.3V for CDCE937.
The input accepts an external crystal or LVCMOS clock signal. If an external crystal is used, an on-chip load capacitor is adequate for most applications. The value of the load capacitor is programmable from 0 to 20pF. Additionally, an on-chip VCXO is selectable which allows synchronization of the output frequency to an external control signal, that is, PWM signal.
The CDCE937 and CDCEL937 devices are modular PLL-based low cost, high-performance, programmable clock synthesizers, multipliers and dividers. The devices generate up to 7 output clocks from a single input frequency. Each output can be programmed in-system for any clock frequency up to 230MHz, using up to three independent configurable PLLs.
The CDCEx937 has separate output supply pins, VDDOUT, which is 1.8V for CDCEL937 and to 2.5V to 3.3V for CDCE937.
The input accepts an external crystal or LVCMOS clock signal. If an external crystal is used, an on-chip load capacitor is adequate for most applications. The value of the load capacitor is programmable from 0 to 20pF. Additionally, an on-chip VCXO is selectable which allows synchronization of the output frequency to an external control signal, that is, PWM signal.