Microchip Technology DSC1123NL2-100.0000

Overview

DSC1123NL2-100.0000 from Microchip Technology is a low-jitter precision LVDS oscillator with ±10 ppm frequency stability, 100 MHz nominal output, and operation over –40°C to +105°C. It features enable/disable control (EN pin), 2.25–3.63 V supply range, and delivers <1 ps RMS phase jitter (typ.) for high-speed serial interfaces including PCIe Gen3 and DisplayPort.

For engineers reviewing the DSC1123NL2-100.0000 datasheet, DSC1123NL2-100.0000 pinout, DSC1123NL2-100.0000 application, or DSC1123NL2-100.0000 equivalent, this MEMS-based clock source offers drop-in replacement capability for 6-pin LVDS crystal oscillators in thermally demanding industrial and networking systems requiring stable, low-noise timing.

Technical Context

The DSC1123NL2-100.0000 integrates a silicon MEMS resonator with on-chip PLL and temperature compensation circuitry to achieve ±10 ppm stability across –40°C to +105°C. Its LVDS outputs deliver 350 mV single-ended swing with 200 ps rise/fall times and 48–52% duty cycle.

Unlike quartz oscillators, it eliminates external load capacitors and supports fast 5 ns output disable time and 20 ns enable time. The EN pin controls output enable only-no standby power-down-distinguishing it from the DSC1103 variant.

Key Specifications

Pinout & Package

Package: 6-Lead VDFN (Very Thin Plastic Dual Flatpack No-Lead), 7.0 mm × 5.0 mm body with 2.8 mm × 1.8 mm exposed thermal pad. Compliant with JEDEC MO-220, MSL 1 @ 260°C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LVDS oscillator applications.

Compared with Si510-AC100M0000 and DSC1103NL5-100.0000, the DSC1123NL2-100.0000 uniquely balances fast output enable/disable (20 ns/5 ns), tight ±10 ppm stability over extended temperature, and MEMS reliability-making it optimal for PCIe Gen3 and SAS-3 systems requiring responsive clock control without standby current penalties.

Availability

DSC1123NL2-100.0000 is available at Aetrix Electronics and suitable for PCIe Gen3 systems, industrial video surveillance equipment, and optical line terminals requiring stable component supply with guaranteed long-term availability.

Supply support for DSC1123NL2-100.0000 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology Inc. is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and timing solutions, with global manufacturing and quality certifications including ISO 9001 and IATF 16949.

The DSC1123 series belongs to Microchip's MEMS oscillator product line, designed specifically for high-reliability, low-jitter clock generation in communications infrastructure, storage, and industrial automation where quartz limitations in shock resistance and aging are unacceptable.

FAQ

What is the operating temperature range of the DSC1123NL2-100.0000?

The DSC1123NL2-100.0000 operates from –40°C to +105°C (extended industrial grade). This range is confirmed by the "L" suffix in the part number and validated in Table 1-1 of DS20005745C. It is qualified to MIL-STD-883 for shock and vibration, making it suitable for harsh environments such as base station radios and transportation control units where thermal cycling exceeds commercial-grade limits.

Does the DSC1123NL2-100.0000 support output enable/disable functionality?

Yes, the DSC1123NL2-100.0000 supports output enable/disable via its EN pin (Pin 1). When EN is high or floating, outputs are active; when pulled low, both LVDS outputs go high-impedance. Unlike the DSC1103 variant, the DSC1123NL2-100.0000 does not enter standby mode-internal circuitry remains powered, enabling faster 20 ns re-enable time.

What is the supply voltage range and current consumption of the DSC1123NL2-100.0000?

The DSC1123NL2-100.0000 accepts 2.25 V to 3.63 V supply voltage. With outputs enabled, typical supply current is 29–32 mA at 3.3 V and 100 MHz. When EN is low (outputs disabled), supply current drops to 22 mA (typ.). A 0.1 µF ceramic capacitor is mandatory on the VDD pin per Figure 4-1 in the datasheet.

Is the DSC1123NL2-100.0000 a drop-in replacement for quartz-based LVDS oscillators?

Yes, the DSC1123NL2-100.0000 is explicitly specified as a drop-in replacement for standard 6-pin LVDS crystal oscillators in industry-standard footprints, including 7.0 mm × 5.0 mm. Its pinout (EN, NC, GND, OUT+, OUT–, VDD), voltage levels, and LVDS electrical characteristics comply with ANSI TIA/EIA-644-A, enabling direct PCB substitution without schematic or layout changes.

What is the phase jitter performance of the DSC1123NL2-100.0000 at 100 MHz?

At 100 MHz, the DSC1123NL2-100.0000 achieves <1 ps RMS phase jitter (typ.), integrated from 12 kHz to 20 MHz. This value is derived from Figure 3-2 (Phase Jitter vs. Integration Bandwidth) and confirmed in the "Integrated Phase Noise" row of Table 1-1 (JPH = 0.28 psRMS @ 156.25 MHz; extrapolated performance at 100 MHz remains sub-1 ps).