Overview
The LMK04610RTQR is a high-performance, ultra-low noise, and low power clock jitter cleaner produced by Texas Instruments. It is part of the LMK0461x device family, which is renowned for its industry-leading performance and compliance with the JESD204B standard. This device is designed to provide exceptional clock signal quality, making it ideal for applications requiring precise timing and low jitter.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package Type | VQFN-56 (RTQ) |
| Pins | 56 |
| Operating Temperature Range (°C) | -40 to 85 |
| Number of Inputs | 2 |
| Number of Outputs | 10 differential output clocks |
| Output Frequency (Max), MHz | 2000 |
| Output Frequency (Min), MHz | 0.03 |
| Output Level | HCSL, LVDS, LVPECL |
| Supply Voltage (Min), V | 1.7 |
| Supply Voltage (Max), V | 3.465 |
| RMS Jitter at 1966.08 MHz | 48 fs |
| RMS Jitter at 983.04 MHz | 50 fs |
| RMS Jitter at 122.88 MHz | 61 fs |
| Noise Floor at 122.88 MHz | -165 dBc/Hz |
| Power Consumption (Typical with 10 outputs active) | 0.88 W |
Key Features
- Dual-loop PLL architecture
- Ultra-low noise performance: 48-fs RMS jitter at 1966.08 MHz, 50-fs RMS jitter at 983.04 MHz, and 61-fs RMS jitter at 122.88 MHz
- JESD204B support with single shot, pulsed, and continuous SYSREF
- 10 differential output clocks in 8 frequency groups
- Programmable output swing between 700 mVpp to 1600 mVpp
- 16-bit channel divider
- Minimum SYSREF frequency of 25 kHz
- Maximum output frequency of 2 GHz
- Precision digital delay, dynamically adjustable
- 60-ps step analog delay
- 50% duty cycle output divides, 1 to 65535 (even and odd)
- Two reference inputs
- Holdover mode when inputs are lost
- Automatic and manual switch-over modes
- Loss-of-signal (LOS) detection
- Fully integrated programmable loop filter
- PLL2 phase detector rate up to 250 MHz
- OSCin frequency-doubler
- Integrated low-noise VCO
- Internal power conditioning: better than –80 dBc PSRR on VDDO for 122.88-MHz differential outputs
- 3- or 4-wire SPI interface (4-wire is default)
Applications
The LMK04610RTQR is suitable for a variety of high-performance applications requiring precise timing and low jitter, such as:
- High-speed data converters
- Wireless infrastructure equipment
- Medical imaging equipment
- Aerospace and defense systems
- High-speed networking and telecommunications equipment
Q & A
- What is the primary function of the LMK04610RTQR?
The LMK04610RTQR is a clock jitter cleaner designed to provide ultra-low noise and low power clock signals, particularly for applications requiring JESD204B compliance.
- What is the maximum output frequency of the LMK04610RTQR?
The maximum output frequency is 2 GHz.
- What types of output levels does the LMK04610RTQR support?
The device supports HCSL, LVDS, and LVPECL output levels.
- What is the RMS jitter performance of the LMK04610RTQR at 1966.08 MHz?
The RMS jitter at 1966.08 MHz is 48 fs.
- Does the LMK04610RTQR support JESD204B?
Yes, the device supports JESD204B with single shot, pulsed, and continuous SYSREF.
- What is the operating temperature range of the LMK04610RTQR?
The operating temperature range is -40°C to 85°C.
- How many differential output clocks does the LMK04610RTQR provide?
The device provides 10 differential output clocks in 8 frequency groups.
- What is the minimum SYSREF frequency supported by the LMK04610RTQR?
The minimum SYSREF frequency is 25 kHz.
- Does the LMK04610RTQR have holdover mode?
Yes, the device has a holdover mode when inputs are lost.
- What is the typical power consumption of the LMK04610RTQR with 10 outputs active?
The typical power consumption is 0.88 W.
- What interface does the LMK04610RTQR use for configuration?
The device uses a 3- or 4-wire SPI interface, with 4-wire being the default.
