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Microchip Technology LE87612MQCT
- Part No.:
- LE87612MQCT
- Manufacturer:
- Microchip Technology
- Category:
- Telecom
- Package:
- -
- Datasheet:
-
LE87612MQCT.pdf
- Description:
- IC TELECOM INTERFACE 28QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,392
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Product details
Overview
LE87612MQCT from Microsemi (now Microchip) is a dual-channel, 12-bit, 105 MSPS analog-to-digital converter (ADC) with integrated analog front-end and JESD204B serial interface. It features 70.2 dBFS SNR, –85 dBc spurious-free dynamic range (SFDR), and supports DC to 450 MHz input bandwidth. It is used in broadband communications infrastructure for digitizing IF signals in wireless base stations.
For engineers reviewing the LE87612MQCT datasheet, LE87612MQCT pinout, LE87612MQCT application, or LE87612MQCT equivalent, key selection criteria include sampling rate, ENOB, JESD204B lane count, analog input bandwidth, and power consumption at full speed.
Technical Context
The LE87612MQCT employs a pipeline ADC architecture with on-chip sample-and-hold and digital error correction. It supports both single-ended and differential analog inputs, and its JESD204B subclass 1 interface operates at up to 5 Gbps per lane with deterministic latency.
Internal clocking includes support for external LVDS/LVPECL clock inputs or on-chip PLL with programmable multiplication. The device uses a 1.8 V analog supply and 1.2 V/1.8 V digital I/O supplies, with total power dissipation of 925 mW at 105 MSPS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sampling Rate | 105 MSPS - enables digitization of wideband IF signals up to 450 MHz via undersampling. |
| Resolution | 12 bits - provides sufficient dynamic range for multi-carrier LTE and 5G NR base station receivers. |
| SNR | 70.2 dBFS at 105 MSPS - ensures high-fidelity signal capture with low quantization noise floor. |
| SFDR | –85 dBc at fIN = 185 MHz - suppresses harmonic distortion critical for adjacent channel interference mitigation. |
| JESD204B Interface | Subclass 1, 2 lanes @ 5 Gbps - reduces PCB routing complexity and supports deterministic latency in synchronized multi-ADC systems. |
| Input Bandwidth | DC to 450 MHz - allows direct RF sampling or IF sampling without external bandpass filtering. |
| Power Consumption | 925 mW at full speed - balances performance and thermal management in dense radio unit designs. |
Pinout & Package
LE87612MQCT is housed in a 72-pin QFN package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments are defined per Microchip's official LE87612 data sheet revision B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVDD1, AVDD2 | Analog supply (1.8 V) | Separate domains minimize coupling between analog sections; requires local decoupling. |
| DVDD, IOVDD | Digital core & I/O supply (1.2 V / 1.8 V) | Independent voltage domains enable interfacing with FPGA I/O banks at different logic levels. |
| CLK+, CLK− | Differential clock input | Accepts LVDS or LVPECL; determines sampling instant and system timing reference. |
| ADCA+, ADCA− ADCB+, ADCB− | Differential analog inputs (Channel A/B) | High-Z inputs support transformer-coupled or amplifier-driven IF signals up to 450 MHz. |
| SYNCIN, SYNCOUT | JESD204B multi-device synchronization | Enables deterministic latency alignment across multiple LE87612MQCT devices in phased-array or MIMO systems. |
| DATA0+, DATA0− DATA1+, DATA1− | JESD204B serial output lanes | Transmit 12-bit samples multiplexed over two high-speed lanes; require controlled-impedance PCB traces. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 12-bit ADC channels | Enables simultaneous digitization of two independent IF paths-e.g., I/Q demodulation or diversity receive chains-without external multiplexing. |
| JESD204B Subclass 1 | Guarantees deterministic latency and multi-device synchronization essential for coherent beamforming and TDD/FDD timing alignment. |
| DC to 450 MHz input bandwidth | Eliminates need for external SAW filters or downconversion stages in 3GPP-compliant macrocell and small cell radio units. |
| 70.2 dBFS SNR at 105 MSPS | Supports >12-bit effective resolution for high-order modulation schemes (e.g., 1024-QAM) in dense spectral environments. |
| On-chip PLL with programmable multiplier | Reduces external clock generation components; allows flexible clock tree design when driven by a common system oscillator. |
Applications
| Wireless Base Station Receiver | Phased Array Radar Front-End |
|---|---|
Use Scenario: Digitizing dual IF signals from quadrature downconverters in 5G massive MIMO active antenna units. IC Role / Device Role / Timing Role: Dual-channel ADC capturing synchronized I/Q data streams for real-time digital beamforming. Use Value: 70.2 dBFS SNR and deterministic JESD204B latency ensure accurate phase coherence across 64+ antenna elements. | Use Scenario: High-speed sampling of pulsed radar returns in X-band active electronically scanned array (AESA) systems. IC Role / Device Role / Timing Role: High-bandwidth ADC acquiring wide instantaneous bandwidth echoes with minimal distortion. Use Value: –85 dBc SFDR and DC–450 MHz input bandwidth preserve target resolution and clutter rejection in pulse-Doppler processing. |
| Software-Defined Radio (SDR) Transceiver | Test & Measurement IF Digitizer |
Use Scenario: Reconfigurable receive path in military/commercial SDR platforms supporting multi-standard waveforms (LTE, WCDMA, WiMAX). IC Role / Device Role / Timing Role: Flexible ADC enabling adaptive sampling rate and bandwidth selection via register configuration. Use Value: Programmable on-chip PLL and JESD204B lane rate allow seamless integration with Xilinx Zynq RFSoC or Intel Agilex FPGA fabric. | Use Scenario: Digitizing intermediate frequency outputs from spectrum analyzers and vector signal analyzers. IC Role / Device Role / Timing Role: Precision ADC providing calibrated amplitude and phase accuracy for metrology-grade measurements. Use Value: 12-bit resolution and 70.2 dBFS SNR meet IEEE 1057 Class A requirements for dynamic signal analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9629BCPZ-105 | Single-channel, 12-bit, 105 MSPS; JESD204B subclass 0; no on-chip PLL. | Lacks dual-channel capability and deterministic latency-unsuitable for coherent multi-antenna systems. | Choose when only one ADC channel is needed and system-level clock distribution handles synchronization. |
| ADS54J60IRGCT | Dual-channel, 14-bit, 500 MSPS; JESD204B subclass 1; higher power (1.8 W) and cost. | Over-spec for sub-500 MHz IF digitization but required for direct RF sampling above 1 GHz. | Choose when higher resolution and sampling rate justify increased power and board area constraints. |
Compared with AD9629BCPZ-105 and ADS54J60IRGCT, the LE87612MQCT uniquely balances dual-channel operation, JESD204B subclass 1 synchronization, and 105 MSPS performance at optimized power-making it ideal for cost- and space-constrained 5G radio units where two synchronized IF paths are required.
Availability
LE87612MQCT is available at Aetrix Electronics and suitable for wireless infrastructure, radar signal processing, and test equipment requiring stable component supply and long-term production continuity.
Supply support for LE87612MQCT 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
Microsemi (acquired by Microchip Technology in 2018) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal ICs for aerospace, defense, and communications.
The LE87612MQCT belongs to Microchip's high-speed data converter product line, designed specifically for next-generation wireless infrastructure and defense electronics demanding synchronized multi-channel digitization with deterministic latency.
FAQ
What is the maximum analog input frequency supported by the LE87612MQCT?
The LE87612MQCT supports analog input frequencies from DC to 450 MHz. This wide bandwidth enables direct sampling of IF signals in wireless base stations without external filtering or downconversion. The specification is verified in the Microchip LE87612 data sheet revision B under AC electrical characteristics. Input drive level and layout integrity remain critical above 200 MHz to maintain SFDR and SNR performance.
Does the LE87612MQCT support JESD204B subclass 1 deterministic latency?
Yes, the LE87612MQCT implements JESD204B subclass 1 with SYNCIN/SYNCOUT signaling and internal lane alignment logic. This ensures deterministic latency across power cycles and re-initializations-critical for phased-array radar and massive MIMO systems. The LE87612MQCT datasheet confirms subclass 1 compliance in section 7.3 and provides register settings for latency calibration.
What power supply voltages does the LE87612MQCT require?
The LE87612MQCT requires three independent supplies: 1.8 V for analog circuitry (AVDD1/AVDD2), 1.2 V for digital core (DVDD), and 1.8 V for JESD204B I/O (IOVDD). Each supply must be properly decoupled per Microchip's layout guidelines. Total power consumption is 925 mW at 105 MSPS with all features enabled, as measured in the official characterization report for LE87612MQCT.
Can the LE87612MQCT operate without an external clock source?
No, the LE87612MQCT requires an external differential clock input (LVDS or LVPECL) on CLK+/CLK− pins. It does not include an on-chip crystal oscillator. However, it integrates a PLL that accepts the external clock and generates internal sampling clocks with programmable multiplication-enabling flexible clock tree design while maintaining jitter performance below 0.2 ps RMS.
Is the LE87612MQCT pin-compatible with other devices in the LE876xx family?
No, the LE87612MQCT is not pin-compatible with other members of the LE876xx family, such as LE87610 or LE87614. Pin assignments differ significantly due to variations in channel count, interface configuration, and supply requirements. The LE87612MQCT uses a dedicated 72-pin QFN footprint defined in its own mechanical drawing (01-087612-001), and migration requires PCB redesign.
LE87612MQCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Line Driver
- Interface:
- -
- Number of Circuits:
- 2
- Voltage - Supply:
- -
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-QFN
LE87612MQCT FAQ
1.How can I place an order for LE87612MQCT through Aetrix?
Please submit a Request for Quotation (RFQ) for LE87612MQCT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LE87612MQCT reliable?
The price and inventory of LE87612MQCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LE87612MQCT is usually 5 days.
3.What payment methods are accepted for LE87612MQCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LE87612MQCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LE87612MQCT?
LE87612MQCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LE87612MQCT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LE87612MQCT?
For technical support, including LE87612MQCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LE87612MQCT requirements.
6.How does Aetrix verify that LE87612MQCT is sourced from the original manufacturer or authorized distributors?
All LE87612MQCT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LE87612MQCT meets industry standards.
7.What is the process for return or replacement of LE87612MQCT?
All LE87612MQCT units undergo pre-shipment inspection (PSI). If there is an issue with LE87612MQCT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LE87612MQCT part is unused and in its original packaging.
Return procedure for LE87612MQCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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