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Analog Devices Inc. HMC495LP3E
- Part No.:
- HMC495LP3E
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Modulators
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
HMC495LP3E.pdf
- Description:
- RF MODULATOR 250MHZ-3.8GHZ 16QFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
HMC495LP3E from Analog Devices (formerly Hittite Microwave) is a SiGe wideband direct quadrature modulator RFIC designed for RF signal upconversion in digital communication systems. It operates from 250 MHz to 3800 MHz, delivers -158 dBm/Hz noise floor, 38 dBc uncalibrated carrier suppression, and requires only +3.3 V @ 108 mA supply. It serves as the core modulation stage in UMTS/GSM basestations and ISM transceivers.
For engineers reviewing the HMC495LP3E datasheet, HMC495LP3E pinout, HMC495LP3E application, or HMC495LP3E equivalent, key selection criteria include its 250–3800 MHz RF bandwidth, differential/single-ended LO drive flexibility (-6 to +6 dBm), DC–250 MHz baseband input range, 3×3 mm QFN package, and calibrated vs. uncalibrated suppression trade-offs.
Technical Context
The HMC495LP3E implements a direct-conversion quadrature architecture with separate I/Q differential baseband inputs (Ip/In, Qp/Qn), differential or single-ended LO interface (LOP/LON), and single-ended 50 Ω matched RF output (RFP). Its SiGe process enables wide instantaneous bandwidth and low phase noise contribution.
It features dual bias supplies (VB1/VB2) and dual power rails (Vcc1/Vcc2) to independently optimize LO stage linearity and output stage efficiency. Carrier and sideband suppression are tunable via DC bias voltage adjustment on baseband ports and VB2, enabling system-level calibration across temperature and frequency bands.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 250 MHz to 3800 MHz - supports multi-band cellular (UMTS, GSM, CDMA), WLL, and ISM applications without band switching. |
| Output Noise Floor | -158 dBm/Hz typical - enables high dynamic range in wideband receivers and low-error-rate digital modulation. |
| Carrier Suppression | 38 dBc uncalibrated - reduces DC offset and local oscillator leakage in zero-IF architectures without external calibration circuitry. |
| LO Input Power | -6 dBm to +6 dBm - accommodates low-power synthesizers or buffered LO sources; supports both differential and single-ended drive. |
| Baseband Bandwidth | DC to 250 MHz - supports GMSK, QPSK, QAM, and SSB modulation with standard 10 pF AC-coupling capacitors. |
| Supply Voltage & Current | +3.3 V @ 108 mA total - low-power operation suitable for compact, thermally constrained RF front-ends. |
| Package | 3×3 mm, 16-pin QFN (LP3) with exposed thermal paddle - RoHS-compliant matte tin finish, MSL1, optimized for RF grounding and thermal dissipation. |
Pinout & Package
HMC495LP3E is housed in a 3×3 mm, 16-pin QFN package (LP3E) with an exposed ground paddle requiring soldering to PCB RF ground per Hittite Application Note. Pin numbering follows standard QFN convention; all ground pins (1, 4, 9, 12) and the paddle must be connected to a low-inductance RF/DC ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12 | GND | RF/DC ground reference; mandatory connection to PCB ground plane with multiple vias for impedance control and thermal conduction. |
| 2, 3 | LOP, LON | Differential LO input; supports single-ended drive (one pin driven, other terminated to 50 Ω) with external 68 Ω shunt resistor for improved VSWR. |
| 5 | VB2 | LO-stage bias voltage (2.7–3.0 V); tuning this adjusts sideband suppression, noise floor, and current draw. |
| 6, 7 | Qn, Qp | Differential quadrature baseband input; high-impedance, DC-biased at 1.0–1.15 V; carrier suppression optimized via DC offset tuning. |
| 8 | VB1 | Output-stage bias voltage; connect directly to Vcc (3.3 V) to set nominal operating point. |
| 10 | N/C | No internal connection; leave unconnected and unstubbed on PCB layout. |
| 11 | RFP | Single-ended 50 Ω RF output; requires series AC-coupling capacitor to block DC feedthrough to downstream stages. |
| 13 | Vcc1 | Supply for mixer and output stages (3.3 V, 37 mA); decouple with local 1000 pF + 4.7 µF capacitance. |
| 14, 15 | Ip, In | Differential in-phase baseband input; identical biasing and tuning behavior as Qp/Qn for I/Q amplitude/phase balance. |
| 16 | Vcc2 | Supply for LO stage (3.3 V, 64 mA); independent rail enables LO-stage optimization without affecting mixer performance. |
Key Features
| Feature | Design Value |
|---|---|
| Wideband RF operation | 250–3800 MHz continuous coverage eliminates need for multiple narrowband modulators in multi-standard radios. |
| Calibration-tunable suppression | Carrier suppression ≥38 dBc and sideband suppression ≥34 dBc achievable via manual DC bias adjustment on I/Q ports and VB2. |
| Flexible LO interface | Accepts -6 to +6 dBm LO drive in differential or single-ended mode, reducing external buffer requirements and simplifying LO chain design. |
| Integrated bias control | Dual independent bias supplies (VB1, VB2) and dual power rails (Vcc1, Vcc2) allow stage-specific optimization for linearity, noise, and power. |
| Minimal external components | 50 Ω RF output match and DC blocking achieved with only series capacitor; no external baluns, transformers, or matching networks required. |
Applications
| UMTS Basestation Transmitter | ISM Band 2.4 GHz Transceiver |
|---|---|
Use Scenario: Transmit path in outdoor small-cell UMTS Node B supporting 5 MHz channel bandwidth and 3GPP-compliant W-CDMA signals. IC Role / Device Role / Timing Role: Direct-conversion quadrature modulator converting baseband I/Q signals to RF carrier at 1960–2140 MHz. Use Value: Delivers -59.7 dBc ACPR at 1960 MHz and -59.2 dBc at 2140 MHz with -17.3 dBm and -14.4 dBm channel power, meeting 3GPP spectral mask requirements. |
Use Scenario: Full-duplex 2.4 GHz ISM transceiver in industrial wireless sensor node with GMSK modulation. IC Role / Device Role / Timing Role: RF upconverter generating 2400–2483.5 MHz output from DC–250 MHz baseband I/Q inputs. Use Value: Provides 38 dBc carrier suppression and -158 dBm/Hz noise floor, enabling >70 dB adjacent-channel rejection and robust low-SNR link budget. |
| GSM/CDMA Basestation | Fixed Wireless Access (FWA) Unit |
Use Scenario: Multi-carrier transmitter in macrocell basestation supporting simultaneous GSM900, DCS1800, and CDMA2000 bands. IC Role / Device Role / Timing Role: Wideband modulator handling 880–960 MHz (CDMA), 1710–1880 MHz (DCS), and 1850–1990 MHz (PCS) RF synthesis. Use Value: Maintains >35 dBc uncalibrated carrier suppression across all bands and achieves -72.3 dBc ACPR at 880 MHz, satisfying IS-95 spectral emission limits. |
Use Scenario: Customer-premises equipment (CPE) in 3.4–3.8 GHz fixed wireless broadband access system using QAM-64 modulation. IC Role / Device Role / Timing Role: Final-stage modulator translating OFDM baseband to 3400–3800 MHz RF output. Use Value: Supports 20 MHz instantaneous bandwidth with 17 dBm OIP3 and -158 dBm/Hz noise floor, preserving EVM <3% under 64-QAM loading. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wideband quadrature modulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADL5375-05 | Wider baseband bandwidth (DC–1 GHz), higher supply current (190 mA), 5 mm × 5 mm package; requires external LO buffering for >+4 dBm drive. | Better suited for high-order QAM in microwave backhaul; less optimal for space-constrained 3G basestations due to larger footprint. | Select ADL5375-05 when >500 MHz baseband bandwidth or higher output IP3 (>20 dBm) is required; HMC495LP3E remains preferred for cost-sensitive, compact 3G/ISM designs. |
| TRF3705 | Narrower RF range (400–3800 MHz, gap below 400 MHz), lower carrier suppression (32 dBc uncalibrated), single 3.3 V supply (no VB1/VB2 tuning). | Limited suitability for sub-400 MHz ISM (e.g., 900 MHz) and UMTS Band V (800 MHz); no bias-based suppression tuning capability. | Choose TRF3705 only for 400–3800 MHz-only applications where board space and BOM count are secondary to integration level; HMC495LP3E offers superior low-end coverage and calibration flexibility. |
Compared with ADL5375-05 and TRF3705, the HMC495LP3E uniquely balances 250–3800 MHz coverage, 3×3 mm size, and analog bias tuning for carrier/sideband suppression-making it optimal for compact, multi-band 3G/ISM transmitters where layout area and calibration headroom are critical.
Availability
HMC495LP3E is available at Aetrix Electronics and suitable for UMTS basestation transmitters, ISM 2.4 GHz transceivers, and fixed wireless access units requiring stable component supply and long-term lifecycle support.
Supply support for HMC495LP3E 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
Analog Devices acquired Hittite Microwave in 2014 and maintains its high-performance RF portfolio, specializing in silicon germanium (SiGe) and GaAs integrated circuits for communications infrastructure.
The HMC495LP3E belongs to Hittite's legacy wideband modulator product line, engineered specifically for zero-IF and direct-conversion transmitters in cellular, broadband wireless, and ISM applications demanding wide instantaneous bandwidth and low noise.
FAQ
What is the RF frequency range supported by the HMC495LP3E?
The HMC495LP3E supports a continuous RF frequency range from 250 MHz to 3800 MHz. This covers key bands including GSM900, UMTS (1920–2170 MHz), PCS/CDMA (1850–1990 MHz), 2.4 GHz ISM, and 3.4–3.8 GHz fixed wireless. Performance data across sub-bands (e.g., 450–960 MHz, 1800–2200 MHz) is specified in the datasheet with measured P1dB, IP3, and noise floor values.
Does the HMC495LP3E require external matching components on the RF output?
No, the HMC495LP3E RF output (pin 11, RFP) is internally matched to 50 Ω, eliminating the need for external baluns, transformers, or matching networks. Only a series AC-coupling capacitor is required to block DC voltage from appearing on the load. The device achieves ≥16 dB RF port return loss across its operating band without additional components.
How is carrier suppression tuned on the HMC495LP3E?
Carrier suppression on the HMC495LP3E is tuned by adjusting the DC bias voltage on the differential I/Q input ports (Ip/In and Qp/Qn). The nominal bias range is 1.0–1.15 V, and fine-tuning within ±5 mV offset optimizes suppression for a given LO frequency and power level. This analog calibration method enables >38 dBc uncalibrated and >45 dBc calibrated suppression without digital control circuitry.
What are the supply voltage and current requirements for the HMC495LP3E?
The HMC495LP3E requires two independent 3.3 V supplies: Vcc1 (37 mA, for mixer/output stage) and Vcc2 (64 mA, for LO stage), totaling 108 mA at nominal operation. Supply voltage tolerance is 3.0–3.6 V. VB1 connects directly to Vcc; VB2 is separately biased at 2.7–3.0 V to optimize LO-stage linearity and sideband suppression.
Is the HMC495LP3E pin-compatible with the HMC495LP3?
Yes, the HMC495LP3E is a RoHS-compliant drop-in replacement for the HMC495LP3, sharing identical pinout, electrical specifications, and mechanical outline. The only differences are lead finish (100% matte Sn vs. Sn/Pb) and peak reflow temperature (260 °C vs. 235 °C); both are qualified for MSL1 handling and use the same 3×3 mm QFN LP3 package footprint.
HMC495LP3E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Strip
- Product Status:
- Obsolete
- Function:
- Modulator
- LO Frequency:
- 250MHz ~ 3.8GHz
- RF Frequency:
- 250MHz ~ 3.8GHz
- P1dB:
- 2dBm
- Noise Floor:
- -158dBm/Hz
- Output Power:
- -6dBm
- Current - Supply:
- 108 mA
- Voltage - Supply:
- 3V ~ 3.6V
- Test Frequency:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
HMC495LP3E FAQ
1.How can I place an order for HMC495LP3E through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC495LP3E 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 HMC495LP3E reliable?
The price and inventory of HMC495LP3E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC495LP3E is usually 5 days.
3.What payment methods are accepted for HMC495LP3E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC495LP3E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC495LP3E?
HMC495LP3E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC495LP3E 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 HMC495LP3E?
For technical support, including HMC495LP3E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC495LP3E requirements.
6.How does Aetrix verify that HMC495LP3E is sourced from the original manufacturer or authorized distributors?
All HMC495LP3E 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 HMC495LP3E meets industry standards.
7.What is the process for return or replacement of HMC495LP3E?
All HMC495LP3E units undergo pre-shipment inspection (PSI). If there is an issue with HMC495LP3E, 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 HMC495LP3E part is unused and in its original packaging.
Return procedure for HMC495LP3E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HMC495LP3E Tags
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