My Inquiry
My Account
Analog Devices Inc. HMC623LP4E
- Part No.:
- HMC623LP4E
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Mixers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
HMC623LP4E.pdf
- Description:
- IC RFIC DOWNCONVERTER 24-QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,006
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HMC623LP4E from Analog Devices (formerly Hittite Microwave) is a highly integrated RFIC downconverter IC operating from 1.8 to 2.7 GHz RF, with 50–650 MHz IF bandwidth and low-side LO injection. It integrates RF/LO/IF amplifiers and a single-balanced mixer core, delivering 33 dB typical conversion gain, 4 dB noise figure, and +39 dBm output IP3 - enabling compact transceiver designs for cellular infrastructure and broadband wireless.
For engineers reviewing the HMC623LP4E datasheet, HMC623LP4E pinout, HMC623LP4E application, or HMC623LP4E equivalent, key selection criteria include its 0 dBm LO drive requirement, 45 dB LO-to-RF isolation, 24-lead 4×4 mm QFN package with exposed ground paddle, and suitability for GSM/WCDMA/TD-SCDMA/WiMAX base station front-ends requiring high linearity and low noise in space-constrained SMT layouts.
Technical Context
The HMC623LP4E implements a monolithic downconversion architecture with integrated RF amplifier, passive mixer core, LO driver amplifier, and IF amplifier - all optimized for low-side LO injection and DC-coupled RFIN/RFOUT paths. Its RF amplifier bias is externally set via resistor R1 on Pin 4 (RES), enabling current tuning across 71–117 mA at 5 V.
Operation requires three independent supply rails: Vdd1RF (Pin 1), Vdd2RF (Pin 24), and VddLO (Pin 12), each bypassed with multi-value capacitors per layout guidelines. The IF path supports DC coupling at IFIN (Pin 15) and IFOUT (Pin 17), while MIXIF (Pin 14) allows optional DC blocking for non-DC IF operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 1.8–2.7 GHz - covers full GSM, WCDMA, TD-SCDMA, WiBro, and WiMAX bands without external tuning. |
| Conversion Gain | 33 dB typical - eliminates need for external IF gain stages in most receiver chains. |
| Noise Figure (SSB) | 4 dB - enables high-sensitivity reception in base station and repeater applications. |
| Output IP3 | +39 dBm - supports strong adjacent-channel interference rejection in dense RF environments. |
| LO Drive Level | 0 dBm - reduces LO synthesizer power and filtering requirements. |
| LO-to-RF Isolation | 45 dB - minimizes LO leakage into antenna path, easing front-end filter design. |
| Supply Current (Vbias = +5 V) | 250 mA - defines thermal dissipation and PCB copper area needs for ground paddle soldering. |
Pinout & Package
Package: 24-lead, 4×4 mm RoHS-compliant QFN with exposed ground paddle (MSL1, 260 °C peak reflow). Requires soldering of all ground leads and paddle to PCB RF ground plane per Hittite Application Note land pattern guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 24 | Vdd1RF / Vdd2RF | Separate 5 V supplies for RF amplifier stages; each requires 100 pF / 1000 pF / 2.2 µF bypassing. |
| 3 | RFIN | 50 Ω DC-coupled RF input - connects directly to LNA output or antenna switch without AC coupling. |
| 4 | RES | External bias resistor node setting RF amplifier quiescent current (71–117 mA range at 5 V). |
| 5, 2, 4, 6–8, 10, 11, 13, 16, 18–20, 23 | GND / N/C | Ground pins must be connected to PCB ground; N/C pins may be grounded but carry no signal function. |
| 9 | LOIN | 50 Ω AC-coupled LO input - requires external series capacitor matching system LO impedance. |
| 12 | VddLO | 5 V supply for LO amplifier - requires RF bypass capacitor per schematic. |
| 14 | MIXIF | Internal mixer IF port - DC-block externally if IF does not extend to DC; otherwise leave unblocked. |
| 15 | IFIN | DC-coupled IF input - requires off-chip DC blocking capacitor before IF amplifier stage. |
| 17 | IFOUT | IF output with integrated DC bias - delivers amplified IF signal and supplies Vcc to downstream IF stage. |
| 21 | MIXRF | DC-coupled RF output from mixer core - internal node; not user-accessible in standard operation. |
| 22 | RFOUT | 50 Ω matched RF output - used only in upconverter configurations; unused in downconverter mode. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated RF amplifier + mixer + LO amp + IF amp | Reduces bill-of-materials count by eliminating four discrete active components and associated matching networks. |
| 0 dBm LO drive requirement | Lowers LO synthesizer output power and simplifies LO buffer/filter design in frequency-agile systems. |
| 4 dB noise figure with 33 dB gain | Enables high dynamic range receiver front-ends without cascading LNAs, preserving system NF budget. |
| +39 dBm output IP3 | Supports operation in spectrally crowded environments such as macrocell base stations with co-located transmitters. |
| 45 dB LO-to-RF isolation | Minimizes LO radiation through antenna path, reducing EMI compliance risk and simplifying front-end filtering. |
Applications
| Cellular Base Station Receiver | WiMAX/WiBro Fixed Wireless CPE |
|---|---|
Use Scenario: Downconverting 2.5–2.7 GHz WiMAX signals to 50–300 MHz IF in outdoor customer premises equipment with limited board area. IC Role / Device Role / Timing Role: Primary RFIC downconverter providing full signal chain gain, filtering, and linearity in single-package solution. Use Value: Eliminates discrete mixer + two amplifier stages, reducing component count by ≥7 parts and PCB footprint by >35 mm². |
Use Scenario: Receiving 2.3–2.4 GHz TD-LTE and WiBro signals in compact repeater units deployed in urban buildings. IC Role / Device Role / Timing Role: High-isolation downconverter enabling shared-antenna duplexing without external circulator or diplexer. Use Value: 45 dB LO-to-RF isolation prevents self-interference during simultaneous Tx/Rx operation in TDD systems. |
| GSM/WCDMA Macrocell Transceiver | Test & Measurement Signal Analyzer Front-End |
Use Scenario: Dual-band (1.8/2.1 GHz) receive path in 3G/4G macro base station radios requiring <4 dB NF and >+35 dBm OIP3. IC Role / Device Role / Timing Role: First-stage downconverter after band-select filter and LNA, defining overall receiver sensitivity and linearity. Use Value: 4 dB NF and +39 dBm OIP3 meet 3GPP TR 37.842 sensitivity and ACLR requirements without cascaded gain stages. |
Use Scenario: Wideband IF digitization path in portable spectrum analyzers covering 1.8–2.7 GHz with real-time bandwidth >100 MHz. IC Role / Device Role / Timing Role: High-fidelity downconverter feeding ADC with minimal added noise or distortion. Use Value: 33 dB conversion gain ensures full-scale ADC utilization with -30 dBm RF input, improving effective resolution by ≥1.5 bits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RFIC downconverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC624LP4E | Wider RF range (1.7–3.0 GHz), same 4 dB NF and +39 dBm OIP3, but requires +3 dBm LO drive. | Better suited for 2.6 GHz LTE-A and 3.0 GHz point-to-point links where extended upper band coverage is critical. | Select HMC624LP4E when RF band extends beyond 2.7 GHz; retain HMC623LP4E for cost-sensitive 1.8–2.7 GHz deployments with strict LO power limits. |
| ADL5360ACPZ-R7 | Lower conversion gain (22 dB), higher NF (6.5 dB), but offers 0 dBm LO drive and 2.7–3.3 GHz RF range. | Targeted at lower-cost, lower-performance receivers where size and LO simplicity outweigh NF/gain trade-offs. | Choose ADL5360ACPZ-R7 only if system NF budget allows ≥2.5 dB degradation and RF band shifts above 2.7 GHz. |
Compared with HMC624LP4E and ADL5360ACPZ-R7, the HMC623LP4E delivers optimal balance of 0 dBm LO drive, 4 dB NF, and +39 dBm OIP3 specifically within the 1.8–2.7 GHz licensed cellular and broadband bands - making it the preferred choice for space-constrained, high-linearity downconverters where LO power efficiency and noise performance are jointly constrained.
Availability
HMC623LP4E is available at Aetrix Electronics and suitable for cellular infrastructure, fixed wireless access, and test equipment requiring stable component supply, RoHS-compliant packaging, and guaranteed long-term availability in production volumes.
Supply support for HMC623LP4E 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, integrating its high-frequency RFIC portfolio into ADI's broader communications and defense product lines.
The HMC623LP4E belongs to Hittite's SMT downconverter family, designed specifically for compact, high-performance receiver front-ends in licensed wireless infrastructure where integration, linearity, and noise figure are co-constrained.
FAQ
What is the recommended LO drive level for optimal performance of the HMC623LP4E?
The HMC623LP4E achieves best-in-class conversion gain (33 dB) and output IP3 (+39 dBm) at a nominal LO drive level of 0 dBm. Operating outside the −3 to +3 dBm range degrades gain flatness and increases distortion; therefore, precise LO level control is essential. The HMC623LP4E datasheet specifies this value under TA = +25°C, IF = 200 MHz, and Vbias = +5 V conditions. Maintaining 0 dBm LO drive ensures consistent HMC623LP4E performance across temperature and process variation.
Can the HMC623LP4E be used in upconverter configurations?
The HMC623LP4E is optimized and characterized exclusively as a downconverter, with RF input (Pin 3), LO input (Pin 9), and IF output (Pin 17) defined for low-side LO injection. While Pin 22 (RFOUT) and Pin 21 (MIXRF) suggest internal RF path access, the device lacks upconverter-specific biasing, linearity characterization, or application circuit validation. Therefore, HMC623LP4E should not be used in upconverter roles; dedicated upconverter ICs like the HMC625LP4E are specified for that function.
How is the RF amplifier bias current set on the HMC623LP4E?
The RF amplifier bias current of the HMC623LP4E is set externally via resistor R1 connected to Pin 4 (RES). At Vbias = +5 V, selecting R1 = 470 Ω yields ~89 mA, while 120 Ω yields ~117 mA - values validated in the HMC623LP4E datasheet Table on page 9-4. This external adjustment allows designers to trade RF gain, noise figure, and power consumption. Incorrect R1 selection causes deviation from specified 4 dB NF and 33 dB gain; thus, R1 must be chosen per the published bias resistor table for the target operating point.
What is the maximum allowable RF input power for the HMC623LP4E?
The absolute maximum RF input power for the HMC623LP4E is +10 dBm at Vbias = +5 V, as stated in the Absolute Maximum Ratings table. Exceeding this risks permanent damage to the integrated RF amplifier or mixer core. For linear operation, the 1 dB compression point is +20 dBm output, corresponding to ~−13 dBm RF input (given 33 dB gain); sustained input above −10 dBm begins compressing the RF amplifier. Therefore, system-level input protection must limit RF input to ≤−10 dBm for distortion-sensitive applications using the HMC623LP4E.
Does the HMC623LP4E require external DC blocking capacitors on all RF/IF ports?
DC blocking is required only on IFIN (Pin 15) - an off-chip capacitor is mandatory to prevent DC shorting of the internal IF amplifier bias. RFIN (Pin 3), RFOUT (Pin 22), and LOIN (Pin 9) are internally DC-coupled or AC-coupled per design: RFIN and RFOUT are DC-coupled 50 Ω ports; LOIN is AC-coupled and requires an external series capacitor. MIXIF (Pin 14) may be DC-blocked only if IF does not extend to DC. No blocking is needed on IFOUT (Pin 17), which supplies DC bias to downstream stages. These requirements are fixed in the HMC623LP4E pinout and cannot be altered.
HMC623LP4E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Obsolete
- RF Type:
- LTE, WiMax
- Frequency:
- 1.8GHz ~ 2.7GHz
- Number of Mixers:
- 1
- Gain:
- 33dB
- Noise Figure:
- 4dB
- Secondary Attributes:
- Down Converter
- Current - Supply:
- 250mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-LFCSP (4x4)
HMC623LP4E FAQ
1.How can I place an order for HMC623LP4E through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC623LP4E 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 HMC623LP4E reliable?
The price and inventory of HMC623LP4E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC623LP4E is usually 5 days.
3.What payment methods are accepted for HMC623LP4E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC623LP4E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC623LP4E?
HMC623LP4E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC623LP4E 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 HMC623LP4E?
For technical support, including HMC623LP4E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC623LP4E requirements.
6.How does Aetrix verify that HMC623LP4E is sourced from the original manufacturer or authorized distributors?
All HMC623LP4E 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 HMC623LP4E meets industry standards.
7.What is the process for return or replacement of HMC623LP4E?
All HMC623LP4E units undergo pre-shipment inspection (PSI). If there is an issue with HMC623LP4E, 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 HMC623LP4E part is unused and in its original packaging.
Return procedure for HMC623LP4E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HMC623LP4E Tags
-
MAX2671EUT+T
Analog Devices Inc./Maxim Integrated
-
ADEX-10+
Mini-Circuits
-
ADE-2+
Mini-Circuits
-
ADE-1+
Mini-Circuits
-
LT5560EDD#PBF
Analog Devices Inc.
-
LT5560EDD#TRPBF
Analog Devices Inc.
-
LTC5562IUC#TRPBF
Analog Devices Inc.
-
MAX2681EUT+T
Analog Devices Inc./Maxim Integrated
-
ADE-1ASK+
Mini-Circuits
-
ADE-1L+
Mini-Circuits
-
ADL5350ACPZ-R7
Analog Devices Inc.
-
AD608ARZ-RL
Analog Devices Inc.
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
