Specifications
| Type | Description |
|---|---|
| Part Number | LMK03806 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Component Type | Other |
| Package / Case | 64-pin WQFN (NKD), 9.00 mm x 9.00 mm |
| Output clock count | 14 programmable outputs; programmable LVDS, LVPECL, or LVCMOS output format |
| Unique output frequencies | Up to 8 across programmable outputs |
| Maximum output frequency | Up to 2.6 GHz clock output synthesis capability |
| VCO frequency range | 2.37 GHz to 2.6 GHz tunable VCO frequency |
| RMS jitter, 1.875 MHz to 20 MHz | < 50 fs at 312.5 MHz output frequency |
| RMS jitter, 12 kHz to 20 MHz | < 150 fs at 312.5 MHz output frequency |
| Supply voltage | 3.15 V min, 3.3 V nom, 3.45 V max; recommended operating conditions |
| Ambient operating temperature | -40 C min, 25 C nom, 85 C max at VCC = 3.3 V |
| Junction operating temperature | 125 C max at VCC = 3.3 V |
| Absolute maximum supply voltage | -0.3 V min, 3.6 V max; never exceed 3.6 V |
| Absolute maximum input voltage | -0.3 V to VCC + 0.3 V on input pins |
| Lead temperature | 260 C max for soldering, 4 seconds |
| Absolute maximum junction temperature | 150 C max |
| Differential input current | -5 mA min, 5 mA max on OSCin/OSCin* differential input |
| Storage temperature | -65 C min, 150 C max |
| Moisture sensitivity level | MSL 3 package handling rating |
| HBM ESD rating | +/-2000 V per ANSI/ESDA/JEDEC JS-001 |
| CDM ESD rating | +/-750 V per JEDEC JESD22-C101 |
| Machine model ESD rating | +/-150 V |
| Junction-to-ambient thermal resistance | 25.2 C/W on 4-layer JEDEC PCB with 32 thermal vias from die attach pad to embedded copper plane |
| Junction-to-case top thermal resistance | 6.9 C/W; case defined as DAP die attach pad |
| Junction-to-board thermal resistance | 4.0 C/W for NKD 64-pin WQFN package |
| Junction-to-top characterization parameter | 0.1 C/W for NKD 64-pin WQFN package |
| Junction-to-board characterization parameter | 4.0 C/W for NKD 64-pin WQFN package |
| Junction-to-case bottom thermal resistance | 0.8 C/W for NKD 64-pin WQFN package |
| Powerdown supply current | 1 mA typ with no DC path to ground on OSCout1/1* |
| Supply current with all clocks enabled | 445 mA typ; CLKoutX_Y_DIV = 16, CLKoutX_TYPE = 1 (LVDS), PLL locked |
| PLL reference input frequency | 1 MHz min, 500 MHz max for external clock on OSCin |
| OSCin minimum slew rate | 0.15 V/ns min, 0.5 V/ns typ; 20% to 80% PLL reference clock slew rate on OSCin |
| OSCin single-ended input voltage | 0.2 Vpp min, 2.4 Vpp max; AC coupled, unused pin AC coupled to GND |
| OSCin differential input voltage | 0.2 V min, 1.55 V max; AC coupled differential voltage swing, VID |
| OSCin differential voltage swing | 0.4 Vpp min, 3.1 Vpp max; AC coupled, VSS |
| OSCin input offset voltage | 20 mV max DC offset between OSCin and OSCin*, each pin AC coupled |
| Doubler input frequency | 155 MHz max; EN_PLL_REF_2X = 1, OSCin duty cycle 40% to 60% |
| Crystal frequency range, low ESR | 16 MHz min, 20.5 MHz max; RESR <= 40 ohm, CL <= 20 pF |
| Crystal frequency range, higher ESR | 6 MHz min, 16 MHz max; RESR <= 80 ohm, CL <= 22 pF |
| Crystal power dissipation | 120 uW typ with Vectron VXB1 crystal, 20.48 MHz, RESR <= 40 ohm, CL <= 20 pF |
| Reference input type | Crystal, XO, TCXO, or external clock; external clock must be AC coupled |
| Programming interface | MICROWIRE through CLKuWire, DATAuWire, and LEuWire CMOS inputs |
| Datasheet Status | request_only |
Product Overview
The LMK03806 is a Texas Instruments Signal_Chain ultra low jitter clock generator for multi-output clock synthesis. It supports 14 programmable outputs using LVDS, LVPECL, or LVCMOS formats and can generate up to 8 unique output frequencies across those outputs. Its clock output synthesis capability extends up to 2.6 GHz, with a tunable VCO frequency range from 2.37 GHz to 2.6 GHz.
Clock performance is specified with RMS jitter below 50 fs over a 1.875 MHz to 20 MHz integration bandwidth and below 150 fs over a 12 kHz to 20 MHz integration bandwidth, both at 312.5 MHz output frequency. Reference input options include crystal, XO, TCXO, or an AC-coupled external clock through OSCin/OSCin*. Programming is through the MICROWIRE interface using CLKuWire, DATAuWire, and LEuWire CMOS inputs.
The device is housed in a 64-pin WQFN (NKD), 9.00 mm x 9.00 mm package. Recommended operation is from 3.15 V to 3.45 V, with -40 C to 85 C ambient operation and 125 C maximum junction operating temperature. Package handling and assembly facts include MSL 3, 260 C maximum lead temperature for 4 seconds, and thermal resistance values defined for the NKD WQFN package.
Key Features
- 14 programmable clock outputs
- LVDS, LVPECL, or LVCMOS output formats
- Up to 8 unique output frequencies
- Clock output synthesis up to 2.6 GHz
- 2.37 GHz to 2.6 GHz tunable VCO
- < 50 fs RMS jitter at 312.5 MHz
- < 150 fs RMS jitter at 312.5 MHz
- Crystal, XO, TCXO, or external clock reference
- MICROWIRE programming interface with CMOS inputs
- 64-pin WQFN package, 9.00 mm x 9.00 mm
Typical Applications
- Multi-output clock generation
- Low-jitter clock synthesis
- LVDS clock distribution
- LVPECL clock distribution
- LVCMOS clock output systems
- Crystal-referenced clock generation
- XO or TCXO referenced designs
- External reference clock systems
Procurement Notes
When requesting a quote for LMK03806, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What type of device is the LMK03806?
The LMK03806 is an ultra low jitter clock generator from Texas Instruments in the Signal_Chain category. It provides 14 programmable outputs and supports LVDS, LVPECL, or LVCMOS output formats.
How many output frequencies can the LMK03806 generate?
The LMK03806 supports up to 8 unique output frequencies across its programmable outputs. Its clock output synthesis capability extends up to 2.6 GHz, with a tunable VCO range from 2.37 GHz to 2.6 GHz.
What reference inputs are supported by the LMK03806?
The LMK03806 reference input can use a crystal, XO, TCXO, or external clock through OSCin/OSCin*. The extracted datasheet facts specify that an external clock reference must be AC coupled.
What package is used for the LMK03806?
The LMK03806 is supplied in a 64-pin WQFN package, Texas Instruments package code NKD. The package body size is listed as 9.00 mm x 9.00 mm.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 21, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.