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Microchip Technology LE9653AQCT
- Part No.:
- LE9653AQCT
- Manufacturer:
- Microchip Technology
- Category:
- Telecom
- Package:
- 36-QFN
- Datasheet:
-
LE9653AQCT.pdf
- Description:
- IC TELECOM INTERFACE 36QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,995
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Product details
Overview
LE9653AQCT from Microsemi is a single-channel Subscriber Line Interface Circuit (SLIC) designed for FXS voice termination in VoIP gateways, supporting 150V peak battery voltage and up to 100-VRMS ringing with 5 REN load. It implements full BORSCHT functionality with programmable DC feed (up to 45mA), wideband/narrowband operation, A-law/µ-law coding, and integrated switching regulator controllers for high-voltage flyback or inverting-boost architectures.
For engineers reviewing the LE9653AQCT datasheet, LE9653AQCT pinout, LE9653AQCT application, or LE9653AQCT equivalent, this device is selected for fixed wireless, PON SFU, eMTA, and FTTX systems requiring programmable telephony supervision, GR-909-compliant loop testing, and ZSI/PCM/SPI interface flexibility on 2-layer PCBs.
Technical Context
The LE9653AQCT integrates dual high-voltage switching regulator controllers-high-voltage flyback and high-voltage inverting-boost-both capable of delivering 140V peak ringing voltage while tracking battery during ringing. Its digital supervision engine supports fully programmable loop start thresholds, ground start detection, and on/off-hook debounce timing.
It provides complete voice signal processing including DTMF generation, call progress tone synthesis, howler tone, transhybrid balance, and transmit/receive gain equalization-all configurable via VP-API-II software. The ZSI interface uses only four wires (ZCLK, ZMOSI, ZMISO, ZSYNC), reducing board routing complexity versus SPI/PCM alternatives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Battery Voltage | 150 V - Enables support for global telephony standards requiring higher line feed voltages, especially in long-loop or high-impedance deployments. |
| Ringing Voltage (RMS) | 100 VRMS @ 5 REN - Delivers compliant ringing performance across international subscriber loads without external boost circuitry. |
| Max Loop Current | 45 mA - Sustains reliable off-hook detection and DC feed under worst-case loop resistance conditions per GR-909. |
| Interface Options | ZSI (4-wire) / PCM / SPI - ZSI reduces PCB layer count and routing congestion; PCM/SPI enables legacy host compatibility. |
| Operating Temp | –40°C to +85°C - Qualified for industrial-grade deployment in residential gateways, outdoor DSLAMs, and FTTX terminal units. |
| Package | 36-pin QFN, 4×6 mm - Surface-mount footprint optimized for compact VoIP gateway designs with thermal pad for power dissipation. |
| Compliance | Telcordia GR-909-CORE / TIA-1063 - Integrated diagnostics enable automated line fault detection without external test hardware. |
Pinout & Package
LE9653AQCT is housed in a 36-pin, 4×6 mm QFN package with exposed thermal pad (EPAD/GND). The package supports reflow soldering and meets RoHS 2 Directive 2011/65/EU.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TIPD1 / RINGD1 | Analog Tip/Ring Driver Outputs | Differential line drivers delivering programmable DC feed and AC signaling to telephone line; support ±100V swing capability. |
| VBAT1 | High-Voltage Battery Input | Primary input for flyback/inverting-boost regulators; accepts up to 150V peak for ringing and DC feed generation. |
| SWOUTY / SWVSY / SWISY / SWCMPY | Switching Regulator Control Outputs | Drive external MOSFETs in high-voltage flyback or inverting-boost topologies; support tracking regulation during ringing. |
| ZCLK / ZMOSI / ZMISO / ZSYNC | ZSI Serial Interface Signals | 4-wire control interface enabling low-pin-count configuration and real-time parameter updates without SPI/PCM overhead. |
| IHL1 / RSN1 / RTV1 | Supervision Sense Inputs | Monitor metallic/longitudinal currents and tip/ring voltages for GR-909-compliant loop diagnostics and fault detection. |
| AVDD / DVDD / DVDD1V2 / VDDSW / VDDHPI | Power Domain Supplies | Separate analog, digital, core, switcher, and high-voltage interface rails ensure noise isolation and stable operation across domains. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable BORSCHT | Full telephony function set-including battery feed, overvoltage protection, ringing, supervision, coding, hybrid, and test-configured via VP-API-II without hardware changes. |
| GR-909 Diagnostic Engine | On-chip line test logic performs Telcordia GR-909-CORE outward tests (e.g., REN, resistive/capacitive faults) using internal references-no external instrumentation required. |
| VeriVoice Manufacturing Test (VVMT) | Self-contained C-source test package enables production-line validation of line integrity, ring trip, DC feed, and tone generation without dedicated ATE. |
| Two-Layer PCB Support | Reference designs validated for 2-layer boards reduce BOM cost and simplify layout for cost-sensitive residential gateways and ATAs. |
| Worldwide Signaling Profiles | VP Profile Wizard generates country-specific profiles (ring cadence, tone frequencies, impedance, metering) directly consumable by VP-API-II at runtime. |
Applications
| Fixed Wireless (LTE) Gateways | DSL Residential Gateways |
|---|---|
Use Scenario: LTE-based home voice access point providing PSTN replacement service in rural or mobile broadband deployments. IC Role / Device Role / Timing Role: SLIC implementing FXS line interface with programmable DC feed, ringing, and loop supervision for analog phone port. Use Value: 150V peak battery enables reliable operation over long loops common in LTE backhaul environments; ZSI interface simplifies integration with low-pin-count SoCs. |
Use Scenario: Multi-service DSL gateway delivering voice, data, and video to residential subscribers with legacy analog phones. IC Role / Device Role / Timing Role: Single-channel SLIC managing BORSCHT functions for one FXS port, interfacing with VoIP processor via ZSI or PCM. Use Value: 100-VRMS ringing at 5 REN satisfies North American and European regulatory requirements; VeriVoice diagnostics enable remote line troubleshooting. |
| PON Single Family Units (SFU) | Analog Telephone Adapters (ATAs) |
Use Scenario: Fiber-to-the-home endpoint converting GPON/EPON data to analog voice for standard telephones in apartment buildings. IC Role / Device Role / Timing Role: FXS line driver with integrated high-voltage regulator and GR-909-compliant loop test for drop-in voice service provisioning. Use Value: Flyback regulator architecture delivers efficient 140V peak ringing without external transformer complexity; supports factory test via VVMT. |
Use Scenario: Compact plug-and-play adapter connecting traditional telephones to VoIP services via Ethernet or Wi-Fi. IC Role / Device Role / Timing Role: Cost-optimized SLIC enabling full telephony feature set in space-constrained enclosure with minimal external components. Use Value: 4×6 mm QFN package and 2-layer reference design reduce bill-of-materials and assembly cost; software compatibility with LE9641/LE9651 simplifies firmware reuse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SLIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LE9643AQCT | 95V peak battery; supports buck-boost and inverting-boost regulators only; max 85V peak ringing; 30mA max loop current. | Suitable for shorter-loop deployments and lower-power gateways where 150V headroom is unnecessary. | Select LE9643AQCT when system-level battery voltage and ringing requirements fall within its 95V/85V envelope and cost sensitivity is higher. |
| Si32260-A-GM | 120V peak battery; integrated DC-DC controller; no ZSI interface; requires external high-voltage MOSFETs for flyback. | Targeted at mid-tier VoIP platforms with SPI-only host interfaces and moderate ringing demands (≤120V). | Choose Si32260-A-GM if ZSI is not needed and existing design uses Silicon Labs' ProSLIC ecosystem and VP-API-II-compatible toolchain. |
Compared with LE9643AQCT and Si32260-A-GM, the LE9653AQCT uniquely supports 150V peak battery and 140V peak ringing via flyback architecture while retaining ZSI for minimal-pin-count host integration-making it optimal for next-generation FTTX and LTE gateways demanding global compliance and field-diagnostic capability.
Availability
LE9653AQCT is available at Aetrix Electronics and suitable for fixed wireless gateways, PON SFUs, DSL IADs, and analog telephone adapters requiring stable component supply, long-term lifecycle assurance, and GR-909-compliant diagnostics.
Supply support for LE9653AQCT 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 Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and timing solutions for communications, aerospace, defense, and industrial markets.
The LE9653AQCT belongs to the miSLIC™ Series-a sixth-generation SLIC family engineered for VoIP gateway manufacturers needing software-configurable, GR-909-compliant FXS interfaces with integrated high-voltage power conversion and diagnostic intelligence.
FAQ
What is the maximum ringing voltage supported by the LE9653AQCT?
The LE9653AQCT supports up to 140V peak ringing voltage using either its high-voltage flyback or high-voltage inverting-boost switching regulator architectures. This enables compliance with international telephony standards requiring high ringing energy across 5 REN loads, and is confirmed in the LE9653 datasheet (Document #157152) and Product Brief (Doc #157126).
Does the LE9653AQCT support ZSI interface mode, and what are its advantages?
Yes, the LE9653AQCT supports ZSI (Zephyr Serial Interface) mode using only four pins: ZCLK, ZMOSI, ZMISO, and ZSYNC. This reduces PCB routing complexity and eliminates the need for level shifters or additional GPIOs compared to SPI or PCM, making it ideal for resource-constrained VoIP SoCs-confirmed in Figure 1 and Table on page 3 of the LE9643/LE9653 Product Brief.
How does the LE9653AQCT handle line diagnostics and compliance testing?
The LE9653AQCT integrates VeriVoice Professional Test Suite capabilities, enabling on-chip execution of Telcordia GR-909-CORE and TIA-1063 diagnostics-including REN measurement, resistive/capacitive fault detection, loop condition reads, and ringing self-test. These functions operate without external test equipment, as documented in Sections 5 and 6 of the Product Brief (Doc #157126).
Is the LE9653AQCT pin-compatible with the LE9643AQCT?
No, the LE9653AQCT is not pin-compatible with the LE9643AQCT despite sharing the same 36-pin QFN package and pinout layout. While both devices use identical mechanical packaging and pin assignments (per Figure 4), their internal regulator architectures and voltage ratings differ significantly-requiring distinct external component selection (e.g., transformer, MOSFETs, feedback networks) per each device's datasheet.
What software tools are required to configure and test the LE9653AQCT?
Configuration and testing of the LE9653AQCT require Microsemi's VoicePath API-II (VP-API-II) software for runtime control, VoicePath Profile Wizard for generating country-specific telephony profiles, and VeriVoice Professional Test Suite or VeriVoice Manufacturing Test Package (VVMT) for diagnostics. All are distributed under license and referenced in Collateral Section (Page 8) of the LE9643/LE9653 Product Brief.
LE9653AQCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- miSLIC™
- Package/Case:
- 36-QFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Subscriber Line Interface Circuit
- Interface:
- PCM, Serial, SPI
- Number of Circuits:
- 1
- Voltage - Supply:
- 150V
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 36-QFN (4x6)
LE9653AQCT FAQ
1.How can I place an order for LE9653AQCT through Aetrix?
Please submit a Request for Quotation (RFQ) for LE9653AQCT 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 LE9653AQCT reliable?
The price and inventory of LE9653AQCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LE9653AQCT is usually 5 days.
3.What payment methods are accepted for LE9653AQCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LE9653AQCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LE9653AQCT?
LE9653AQCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LE9653AQCT 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 LE9653AQCT?
For technical support, including LE9653AQCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LE9653AQCT requirements.
6.How does Aetrix verify that LE9653AQCT is sourced from the original manufacturer or authorized distributors?
All LE9653AQCT 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 LE9653AQCT meets industry standards.
7.What is the process for return or replacement of LE9653AQCT?
All LE9653AQCT units undergo pre-shipment inspection (PSI). If there is an issue with LE9653AQCT, 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 LE9653AQCT part is unused and in its original packaging.
Return procedure for LE9653AQCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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