사양
| 속성 | 가치 |
| Supplier | Texas Instruments |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Type | Clock Synchronizer |
| PLL | Yes |
| Input | CML, HCSL, LVDS, LVPECL |
| Output | CML, HCSL, LVCMOS, LVDS, LVPECL |
| Number of Circuits | 2 |
| Ratio - Input: Output | 4:8 |
| Differential - Input: Output | Yes/Yes |
| Frequency - Max | 200MHz, 750MHz |
| Divider / Multiplier | Yes/Yes |
| Voltage - Supply | 1.71V ~ 1.89V, 2.375V ~ 2.625V, 3.135V ~ 3.465V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
개요
Description
LMK05028RGCR is a Texas Instruments clock-management IC in the LMK family. It provides jitter-cleaning and distribution: ingest a reference clock and generate multiple low-jitter output clocks synchronized to that reference. It is controlled via I2C, allowing programming of dividers/multipliers, enabling/disabling outputs, drive strength, and optional spread-spectrum. It supports common output formats (e.g., LVDS/LVCMOS/CML) and is designed for high-performance applications such as ADC/DAC front ends, RF transceivers, FPGAs, and other digital systems requiring clean, synchronized clocks. The RGCR suffix indicates a specific package variant. Benefits include reduced phase noise, smaller BOM, and simpler layout compared with discrete clocking. For exact specs—input frequency range, number of outputs, jitter performance, and the I2C register map—consult the LMK05028RGCR datasheet.
Features
Here are the key features of TI LMK05028RGCR (clock conditioner/fan-out):
- High-performance jitter-cleaning clock conditioner and multi-output clock distributor.
- Two selectable clock reference inputs with automatic/selectable failover.
- Up to 8 outputs with per-output enables and configurable drive.
- Flexible output formats: LVCMOS, LVDS, LVPECL, and HCSL (selectable per output).
- I2C/SPI control for programming, monitoring, and test modes.
- Spread-spectrum clock modulation to reduce EMI.
- Low-power operation with a 3.3V supply; industrial temperature range.
- Small RGCR package suitable for space-constrained designs.
Note: Exact pinout, drive levels, and supported input ranges are in the datasheet. For precise specifications and configuration options, please refer to TI LMK05028RGCR datasheet.
- High-performance jitter-cleaning clock conditioner and multi-output clock distributor.
- Two selectable clock reference inputs with automatic/selectable failover.
- Up to 8 outputs with per-output enables and configurable drive.
- Flexible output formats: LVCMOS, LVDS, LVPECL, and HCSL (selectable per output).
- I2C/SPI control for programming, monitoring, and test modes.
- Spread-spectrum clock modulation to reduce EMI.
- Low-power operation with a 3.3V supply; industrial temperature range.
- Small RGCR package suitable for space-constrained designs.
Note: Exact pinout, drive levels, and supported input ranges are in the datasheet. For precise specifications and configuration options, please refer to TI LMK05028RGCR datasheet.
Pinout
- Pin count: 28 pins (QFN package, RGCR variant).
- Function: A clock-generation/jitter-cleaning device. It acts as a clock conditioner and distribution IC: inputs a reference clock, uses an internal PLL/dividers to generate and distribute multiple low-jitter output clocks for system components.
- Function: A clock-generation/jitter-cleaning device. It acts as a clock conditioner and distribution IC: inputs a reference clock, uses an internal PLL/dividers to generate and distribute multiple low-jitter output clocks for system components.
Manufacturer
- Manufacturer: Texas Instruments (TI).
- What kind of company: TI is an American multinational semiconductor company that designs and manufactures analog, mixed-signal, and embedded processing ICs and related products, headquartered in Dallas, Texas.
- What kind of company: TI is an American multinational semiconductor company that designs and manufactures analog, mixed-signal, and embedded processing ICs and related products, headquartered in Dallas, Texas.
Application
LMK05028RGCR is a jitter-clean clock conditioner and distribution device. It provides multiple clean clock outputs from a reference, suitable for:
- Networking/data-center equipment (routers, switches, base stations)
- High-speed SerDes interfaces (PCIe, SATA, USB, HDMI, JESD204B)
- FPGA/ASIC timing networks and multi-clock-domain designs
- RF/microwave test equipment and instrumentation
- Automotive and industrial electronics needing low-noise clocks
- Any system requiring precise, low-jitter clock distribution and synchronization
- Networking/data-center equipment (routers, switches, base stations)
- High-speed SerDes interfaces (PCIe, SATA, USB, HDMI, JESD204B)
- FPGA/ASIC timing networks and multi-clock-domain designs
- RF/microwave test equipment and instrumentation
- Automotive and industrial electronics needing low-noise clocks
- Any system requiring precise, low-jitter clock distribution and synchronization
Package
28-pin QFN package (5x5 mm) with exposed pad; RoHS-compliant.
