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Analog Devices Inc. LTC5588IPF-1
- Part No.:
- LTC5588IPF-1
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Modulators
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
LTC5588IPF-1.pdf
- Description:
- RF MODULATOR 200MHZ-6GHZ 24UFQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LTC5588IPF-1 from Analog Devices (formerly Linear Technology) is a high-performance direct-conversion I/Q quadrature modulator for RF transmitter signal chains. It operates from 200MHz to 6000MHz, delivers +35dBm typical OIP3 at 2140MHz with LINOPT optimization, supports 0.5V DC-coupled differential baseband inputs, and integrates on-chip LO quadrature generation and balun for 50Ω single-ended RF output - deployed in LTE/W-CDMA basestations and microwave point-to-point links.
For engineers reviewing the LTC5588IPF-1 datasheet, LTC5588IPF-1 pinout, LTC5588IPF-1 application, or LTC5588IPF-1 equivalent, key selection considerations include its wideband RF frequency coverage, user-optimized OIP3 via LINOPT voltage tuning, fast 10ns/17ns enable/disable timing, integrated thermistor for temperature calibration, and 24-pin UTQFN 4mm × 4mm package with exposed ground pads.
Technical Context
The LTC5588IPF-1 implements a double-balanced mixer architecture driven by differential I/Q baseband inputs (BBPI/BBMI/BBPQ/BBMQ) with 0.5V common-mode voltage and 430MHz baseband bandwidth. Its on-chip LO buffer accepts single-ended or differential LO drive and generates precise 90° quadrature signals internally to feed the mixers.
RF output is delivered through an integrated on-die balun that converts differential mixer outputs to a 50Ω single-ended RF port. The device supports both high-side and low-side LO injection, enables image-reject upconversion, and allows OIP3 optimization via external LINOPT voltage adjustment - with performance validated across –40°C to 85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 200MHz to 6000MHz RF output - covers sub-1GHz through 5G FR1 bands without external frequency translation. |
| OIP3 (Optimized) | +35.1dBm at 2140MHz - enables high-linearity W-CDMA 4-carrier transmission with low ACPR. |
| Conversion Gain | +0.2dB at 2140MHz - near-unity gain simplifies cascaded stage design and reduces external amplification needs. |
| Output Noise Floor | –160.6dBm/Hz at 6MHz offset (no BB input) - supports high SNR in wideband receivers and sensitive transmitters. |
| Enable Timing | tOFF = 10ns, tON = 17ns - enables rapid TDD switching and burst-mode operation in time-division systems. |
| Supply Voltage | 3.15V to 3.45V - tightly regulated 3.3V operation ensures stable performance across industrial temperature range. |
| Thermistor Output | 1.385kΩ at 25°C, 11Ω/°C slope - enables closed-loop temperature compensation of LO feedthrough and image rejection. |
Pinout & Package
24-lead UTQFN 4mm × 4mm package (PF24MA variant) with exposed ground pads (Pins 25, 26) requiring PCB soldering for thermal and electrical integrity. Pin count and layout match standard 24-pin QFN footprint with 0.5mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BBPI / BBMI / BBPQ / BBMQ | Differential Baseband Inputs (I+, I–, Q+, Q–) | DC-coupled, 0.5V common-mode, high-impedance interface compatible with DAC outputs or baseband processors. |
| LOP / LOM | Differential LO Input | Accepts 50Ω-terminated single-ended or differential LO drive; internal buffer and quadrature generator eliminate external phase shifter. |
| RF | Single-Ended RF Output | 50Ω matched output with integrated balun - connects directly to PA input or bandpass filter without external matching. |
| VCC1 / VCC2 | Power Supply Inputs | Separate analog supply pins reduce noise coupling; require local 100nF + 4.7μF decoupling per pin. |
| EN | Enable Control | CMOS-compatible digital input; transitions RF output from –68.9dBm (off) to full power in 17ns. |
| LINOPT | OIP3 Optimization Voltage Input | Analog input pin where externally applied voltage (2.56V typical) tunes mixer bias for peak third-order linearity. |
| GND / GNDRF / NC | Ground & No-Connect | Multiple GND pins (including dedicated RF ground) and NC pins ensure isolation between analog, RF, and digital domains. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrahigh OIP3 with LINOPT tuning | External voltage on LINOPT pin adjusts internal bias to maximize OIP3 - achieves +35.1dBm at 2140MHz vs. +30.9dBm unoptimized. |
| Integrated LO quadrature generation | On-chip circuitry synthesizes precise 90° phase shift from single LO input - eliminates need for external hybrid coupler or polyphase filter. |
| DC-coupled 0.5V common-mode baseband interface | Supports direct connection to baseband DACs without AC coupling or level-shifting - reduces component count and preserves low-frequency signal integrity. |
| Fast enable/disable with settling control | 10ns turn-off and 17ns turn-on, with <85ns LO suppression/image rejection settling - meets stringent TDD guard-band timing in LTE/FDD and 5G NR. |
| On-die temperature sensor (thermistor) | Factory-calibrated 1.385kΩ resistance at 25°C with 11Ω/°C slope - enables real-time thermal drift compensation of critical RF parameters. |
| Single-ended 50Ω RF output with integrated balun | Eliminates discrete balun or transformer - reduces BOM, board area, and insertion loss while maintaining broadband 200–6000MHz RF match (S22 < –10dB). |
Applications
| LTE/W-CDMA Basestation Transmitter | Point-to-Point Microwave Radio |
|---|---|
|
Use Scenario: Transmitting multi-carrier W-CDMA signals in macrocell basestations operating at 2140MHz. IC Role / Device Role / Timing Role: Direct-conversion quadrature modulator converting baseband I/Q DAC outputs into RF carrier with image rejection and LO feedthrough suppression. Use Value: +35.1dBm optimized OIP3 enables 4-carrier W-CDMA operation with ACPR < –70dBc, meeting 3GPP spectral mask requirements without external predistortion. |
Use Scenario: Full-duplex 5.8GHz point-to-point backhaul link with tight EVM and adjacent channel leakage constraints. IC Role / Device Role / Timing Role: High-linearity upconverter generating clean RF output from FPGA-based baseband processor with programmable LINOPT tuning. Use Value: 200–6000MHz coverage supports license-exempt ISM bands; –56.6dBc image rejection at 2140MHz minimizes filtering complexity in compact outdoor radios. |
| Broadcast Modulator (DVB-T/T2) | Military SDR Transceiver |
|
Use Scenario: OFDM-based DVB-T2 transmitter operating at UHF band (470–702MHz) requiring low EVM and wide dynamic range. IC Role / Device Role / Timing Role: I/Q modulator accepting 8-bit parallel baseband data and generating spectrally pure RF output with minimal group delay variation. Use Value: –160.6dBm/Hz noise floor at 6MHz offset preserves SNR in wideband 8K FFT channels; 430MHz baseband bandwidth accommodates 8MHz channel bandwidths. |
Use Scenario: Wideband tactical radio supporting multiple waveforms (e.g., SINCGARS, HF/VHF/UHF) across 30MHz–3GHz with rapid frequency agility. IC Role / Device Role / Timing Role: Reconfigurable direct-conversion modulator enabling software-defined waveform synthesis with hardware-assisted image cancellation. Use Value: Fast 10ns turn-off supports time-slicing between receive and transmit; thermistor-enabled calibration maintains LO feedthrough < –40dBm across –40°C to 85°C military temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quadrature modulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADL5375-05 | 500MHz–4GHz range; fixed 0.5V CM; no LINOPT pin; requires external LO phase splitter. | Limited to sub-4GHz; lacks user-tunable OIP3; higher LO feedthrough (–35dBm typical) without nulling. | Select when cost-sensitive designs prioritize simplicity over ultrahigh linearity above 4GHz. |
| TRF372017 | 300MHz–4.8GHz; integrated PLL/VCO; 3.3V/5V dual supply; no on-die thermistor. | Higher integration but narrower RF range; no LINOPT optimization; less precise temperature compensation. | Prefer for compact SDR platforms needing integrated LO synthesis, not for high-OIP3 basestation front-ends. |
Compared with ADL5375-05 and TRF372017, the LTC5588IPF-1 uniquely combines 200–6000MHz coverage, LINOPT-driven OIP3 optimization up to +35.1dBm, and factory-trimmed thermistor for closed-loop calibration - making it the only choice for wideband, high-linearity, temperature-stable basestation and microwave transmitter designs.
Availability
LTC5588IPF-1 is available at Aetrix Electronics and suitable for LTE basestation development, point-to-point microwave radio production, and broadcast modulator manufacturing requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC5588IPF-1 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 Linear Technology in 2017 and maintains its high-performance RF product lines with rigorous automotive-grade qualification and military-grade reliability testing.
The LTC5588IPF-1 belongs to Linear's precision RF modulator family, engineered specifically for wireless infrastructure transmitters demanding ultrahigh linearity, wide instantaneous bandwidth, and robust thermal stability in harsh environments.
FAQ
What is the operating frequency range of the LTC5588IPF-1?
The LTC5588IPF-1 operates from 200MHz to 6000MHz RF output frequency, covering cellular bands (700MHz, 2100MHz, 2600MHz), WiMAX, ISM, and 5G FR1. Its RF match (S22 < –10dB) spans 700–5000MHz across multiple LO frequencies, and LO match (S11 < –10dB) supports 600–6000MHz - verified in the official datasheet under Electrical Characteristics tables.
How does the LINOPT pin improve performance of the LTC5588IPF-1?
The LINOPT pin on the LTC5588IPF-1 accepts an external analog voltage (typically 2.56V) to adjust internal bias currents and optimize OIP3. At 2140MHz, applying the optimal LINOPT voltage raises OIP3 from +30.9dBm (unoptimized) to +35.1dBm - a 4.2dB improvement confirmed in Figure G28 of the LTC5588-1 datasheet and essential for meeting stringent ACPR requirements in multi-carrier W-CDMA.
What is the baseband interface specification for the LTC5588IPF-1?
The LTC5588IPF-1 features four DC-coupled differential baseband inputs (BBPI/BBMI/BBPQ/BBMQ) with a fixed 0.5V DC common-mode voltage, ±0.43V swing (0.86VP-P single-ended), and 430MHz –1dB bandwidth. Input resistance is –3kΩ (single-ended), and baseband current is –136μA - all specified in the "Baseband Inputs" section of the Electrical Characteristics table.
Does the LTC5588IPF-1 include integrated temperature sensing?
Yes, the LTC5588IPF-1 integrates a factory-trimmed thermistor (RT = 1.385kΩ at 25°C, 11Ω/°C slope) referenced to the EN pin. When 100μA is sourced into the thermistor (via external circuit), resistance changes linearly with die temperature - enabling real-time calibration of LO feedthrough and image rejection, as documented in Note 14 and Electrical Characteristics table.
What package type and thermal requirements apply to the LTC5588IPF-1?
The LTC5588IPF-1 uses a 24-lead UTQFN 4mm × 4mm package (PF24MA variant) with exposed ground pads (Pins 25, 26) that must be soldered to the PCB for thermal dissipation and RF grounding. Thermal resistance is θJA = 43°C/W and θJC = 7°C/W - requiring adequate copper pour and vias beneath the exposed pad per Linear's layout guidelines in the datasheet.
LTC5588IPF-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-UFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Modulator/Mixer
- LO Frequency:
- 200MHz ~ 6GHz
- RF Frequency:
- 200MHz ~ 6GHz
- P1dB:
- 12dBm
- Noise Floor:
- -160dBm/Hz
- Output Power:
- 4.2dBm
- Current - Supply:
- 303 mA
- Voltage - Supply:
- 3.15V ~ 3.45V
- Test Frequency:
- 2.14GHz
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-UTQFN (4x4)
LTC5588IPF-1 FAQ
1.How can I place an order for LTC5588IPF-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC5588IPF-1 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 LTC5588IPF-1 reliable?
The price and inventory of LTC5588IPF-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC5588IPF-1 is usually 5 days.
3.What payment methods are accepted for LTC5588IPF-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC5588IPF-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC5588IPF-1?
LTC5588IPF-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC5588IPF-1 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 LTC5588IPF-1?
For technical support, including LTC5588IPF-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC5588IPF-1 requirements.
6.How does Aetrix verify that LTC5588IPF-1 is sourced from the original manufacturer or authorized distributors?
All LTC5588IPF-1 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 LTC5588IPF-1 meets industry standards.
7.What is the process for return or replacement of LTC5588IPF-1?
All LTC5588IPF-1 units undergo pre-shipment inspection (PSI). If there is an issue with LTC5588IPF-1, 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 LTC5588IPF-1 part is unused and in its original packaging.
Return procedure for LTC5588IPF-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC5588IPF-1 Tags
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