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Analog Devices Inc. LTC5591IUH#TRPBF
- Part No.:
- LTC5591IUH#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Mixers
- Package:
- 24-WQFN Exposed Pad
- Datasheet:
-
LTC5591IUH#TRPBF.pdf
- Description:
- IC MIXER 1.3-2.3GHZ 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,654
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Product details
Overview
LTC5591IUH#TRPBF from Analog Devices (formerly Linear Technology) is a dual-channel, high-dynamic-range, downconverting RF mixer IC optimized for 1.3GHz–2.3GHz RF input and 1.4GHz–2.1GHz LO frequencies. It delivers 8.5dB conversion gain, 26.2dBm IIP3, and 9.9dB noise figure at 1950MHz, with independent channel shutdown and low-power mode. It serves as the core RF-to-IF signal translation element in LTE/W-CDMA diversity receivers.
For engineers reviewing the LTC5591IUH#TRPBF datasheet, LTC5591IUH#TRPBF pinout, LTC5591IUH#TRPBF application, or LTC5591IUH#TRPBF equivalent, key selection criteria include its 47dB channel-to-channel isolation, 50Ω single-ended RF/LO interface, differential 300Ω||2.3pF IF output impedance, 1.25W total power consumption at 3.3V, and support for both low-side and high-side LO injection.
Technical Context
The LTC5591IUH#TRPBF integrates two identical passive double-balanced mixer cores, each with dedicated LO buffer amplifiers, IF differential amplifiers, and independent enable control (ENA/ENB). Its RF and LO inputs are single-ended and internally matched to 50Ω across operating bands without external matching networks when driven with 0dBm LO.
It supports flexible biasing via IFBA/IFBB pins for IF amplifier current tuning, and features an ISEL pin to select between normal (218mA mixer + 240mA IF amp) and low-current mode (143mA mixer + 144mA IF amp). The IF outputs (IFA+/IFA−, IFB+/IFB−) are open-collector differential, requiring external biasing through inductors or transformer center-taps to VCCIF (3.3V or 5V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 1.3GHz to 2.3GHz - Covers LTE Band 1/3/7/38/40 and W-CDMA uplink/downlink bands. |
| LO Frequency Range | 1.4GHz to 2.1GHz - Enables low-side (fLO = fRF − fIF) or high-side (fLO = fRF + fIF) injection with 190MHz IF. |
| Conversion Gain | 8.5dB at 1950MHz - Reduces need for post-mixer gain stages, lowering system noise and component count. |
| IIP3 | 26.2dBm at 1950MHz - Supports strong adjacent-channel interferers in dense cellular base station environments. |
| Noise Figure | 9.9dB at 1950MHz - Enables high sensitivity in multichannel diversity receivers with lossy SAW/BAW IF filters. |
| Channel Isolation | 47dB - Prevents crosstalk between parallel receive paths in MIMO and diversity architectures. |
| Supply Current | 458mA max (3.3V VCCA/VCCB + 3.3V VCCIF) - Requires careful thermal management in compact RRUs. |
Pinout & Package
24-lead (5mm × 5mm) plastic QFN package with exposed ground pad (Pin 25), rated for –40°C to 105°C operation. Thermal resistance θJC = 7°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RFA, RFB (1, 6) | Single-ended RF inputs | 50Ω matched when LO driven at 0dBm; require DC-blocking capacitors (e.g., 2.7pF) due to internal DC-grounded transformer primary. |
| CTA, CTB (2, 5) | RF transformer center-taps | Bias at 1.2V; bypass capacitor (e.g., 2.2–3.3pF) tunes channel isolation without degrading gain or linearity. |
| LO (16) | Single-ended local oscillator input | Internally 50Ω matched in all states (enabled/disabled); requires 4.7pF DC-blocking capacitor. |
| ENA, ENB (14, 17) | Independent channel enable | Logic-high (>2.5V) activates channel; <0.3V disables with 500µA shutdown current. |
| ISEL (18) | Low-current mode select | High (>2.5V) reduces total supply current to 287mA while maintaining usable performance for power-constrained designs. |
| IFA+, IFA−, IFB+, IFB− (9,10,21,22) | Differential IF outputs | Open-collector, 300Ω||2.3pF impedance at 190MHz; require external biasing (e.g., 150nH inductors to VCCIF). |
| VCCA, VCCB (12, 19) | LO buffer & bias supplies | 3.3V ±0.2V supplies; each draws ~91mA; must be decoupled with 1µF + 22pF near pin. |
| VCCIF (9,10,21,22) | IF amplifier supplies | Supports 3.3V or 5V; sets IF output P1dB (10.7dBm @3.3V, 13.9dBm @5V) and noise floor. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent mixer channels | Enables simultaneous diversity or MIMO reception with no shared signal path degradation. |
| 47dB channel-to-channel isolation | Minimizes inter-channel interference in compact multichannel front-ends without additional shielding. |
| 0dBm LO drive requirement | Eliminates need for external LO buffer amplifiers, reducing bill-of-materials and layout complexity. |
| 50Ω RF/LO input match across full band | Ensures stable VSWR and predictable system-level return loss without per-frequency tuning. |
| Independent ENA/ENB and ISEL control | Allows dynamic power scaling-e.g., disable one channel during single-antenna operation or enter low-power mode during idle periods. |
Applications
| 3G/4G Diversity Receiver | Remote Radio Unit (RRU) |
|---|---|
|
Use Scenario: Dual-antenna LTE base station receiver handling simultaneous uplink signals in Band 1 (1920–1980MHz). IC Role / Device Role / Timing Role: Downconverts RF to 190MHz IF with high linearity and low noise, enabling adjacent-channel rejection per 3GPP TS 36.104. Use Value: 26.2dBm IIP3 prevents desensitization from co-site interferers; 47dB isolation avoids cross-talk between antenna paths. |
Use Scenario: Compact outdoor macrocell RRU with space-constrained PCB and thermal envelope. IC Role / Device Role / Timing Role: Dual-channel RF front-end mixer providing parallel IF outputs for digital beamforming ADCs. Use Value: 5mm × 5mm QFN package and integrated transformers reduce solution size by >30% vs discrete mixer + balun designs. |
| MIMO Multichannel Receiver | Wideband Spectrum Analyzer Front-End |
|
Use Scenario: 4×4 MIMO test equipment capturing simultaneous 20MHz LTE carriers across 1.7–2.2GHz. IC Role / Device Role / Timing Role: Four LTC5591IUH#TRPBF devices provide eight synchronized IF outputs for parallel digitization. Use Value: Matched conversion gain (±0.25dB flatness) and NF (<0.5dB variation) ensure consistent channel calibration. |
Use Scenario: Portable spectrum analyzer requiring wide instantaneous bandwidth and high dynamic range. IC Role / Device Role / Timing Role: High-linearity downconversion stage preceding 500MHz IF ADC, supporting 5–500MHz IF output range. Use Value: 15.5dB NF under 5dBm blocking enables accurate measurement of weak signals in presence of strong interferers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel downconverting mixer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC1040LP5E | Higher RF range (1.7–2.7GHz), lower IIP3 (23.5dBm), no independent channel shutdown. | Optimized for point-to-point microwave links; lacks low-power mode and fine-grained enable control. | Select when wider RF bandwidth is critical and channel independence is not required. |
| MAX19997AETX+ | Lower noise figure (8.5dB), narrower RF range (1.5–2.2GHz), fixed 5V-only supply. | Targeted at high-sensitivity test equipment; no 3.3V operation or ISEL low-power option. | Select when ultimate sensitivity outweighs power flexibility and temperature range (–40°C to 85°C only). |
Compared with HMC1040LP5E and MAX19997AETX+, the LTC5591IUH#TRPBF uniquely balances wide RF coverage (1.3–2.3GHz), high linearity (26.2dBm IIP3), independent channel control, and dual-supply flexibility (3.3V/5V IF), making it optimal for thermally constrained, multi-standard wireless infrastructure.
Availability
LTC5591IUH#TRPBF is available at Aetrix Electronics and suitable for 3G/4G wireless infrastructure diversity receivers, remote radio units, and MIMO multichannel receivers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC5591IUH#TRPBF 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- and industrial-grade qualification.
The LTC5591IUH#TRPBF belongs to Linear's high-dynamic-range mixer family, designed specifically for cellular infrastructure front-ends where linearity, isolation, and thermal robustness are critical in dense RF environments.
FAQ
What is the recommended LO drive level for optimal performance of the LTC5591IUH#TRPBF?
The LTC5591IUH#TRPBF is specified for 0dBm LO drive across its 1.4GHz–2.1GHz range. Performance degrades outside –4dBm to +6dBm; below –4dBm, conversion gain drops and IIP3 falls sharply. At 0dBm, the device achieves its rated 8.5dB gain, 26.2dBm IIP3, and 9.9dB NF at 1950MHz. Drive levels above +3dBm increase LO leakage and spurious outputs.
Can the LTC5591IUH#TRPBF operate with different supply voltages on VCCA/VCCB and VCCIF?
Yes. The LTC5591IUH#TRPBF supports independent supplies: VCCA/VCCB must be 3.3V (±0.2V), while VCCIF accepts either 3.3V or 5V. Using 5V on VCCIF raises the IF output P1dB from 10.7dBm to 13.9dBm and slightly improves noise figure, but increases total current by ~40mA per channel. This dual-supply flexibility allows optimization for dynamic range versus power in the LTC5591IUH#TRPBF design.
How does the ISEL pin affect the performance of the LTC5591IUH#TRPBF?
When ISEL is pulled high (>2.5V), the LTC5591IUH#TRPBF enters low-current mode, reducing total supply current from 458mA to 287mA. This trades 0.5dB conversion gain, 1.5dB IIP3, and 0.3dB NF for ~37% power savings. It remains fully functional for moderate-dynamic-range applications like indoor small cells, but is not recommended for macrocell base stations where full specification compliance is mandatory.
What is the purpose of the CTA and CTB pins on the LTC5591IUH#TRPBF?
CTA (Pin 2) and CTB (Pin 5) are the center-taps of the internal RF transformer secondaries. They sit at a nominal 1.2V DC bias and require AC coupling to ground via a small capacitor (e.g., 2.2–3.3pF). Adjusting this capacitor tunes channel-to-channel isolation-e.g., 2.7pF yields >47dB isolation at 1950MHz-without significantly affecting conversion gain or IIP3. Placement within 2mm of the pin is critical for high-frequency effectiveness in the LTC5591IUH#TRPBF layout.
Does the LTC5591IUH#TRPBF support both low-side and high-side LO injection?
Yes. The LTC5591IUH#TRPBF supports both configurations: low-side LO (fLO = fRF − fIF) for 1700–2300MHz RF input with 190MHz IF, and high-side LO (fLO = fRF + fIF) for 1300–1800MHz RF input with same IF. The datasheet provides separate AC performance curves for each mode, confirming 24.3dBm IIP3 and 10.1dB NF at 1600MHz RF in high-side configuration. No hardware change is needed-only LO frequency and filtering are reconfigured.
LTC5591IUH#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- RF Type:
- W-CDMA, CDMA, GSM, UMTS
- Frequency:
- 1.3GHz ~ 2.3GHz
- Number of Mixers:
- 2
- Gain:
- 8.5dB
- Noise Figure:
- 9.9dB
- Secondary Attributes:
- -
- Current - Supply:
- 239mA
- Voltage - Supply:
- 3.1V ~ 3.5V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QFN (5x5)
LTC5591IUH#TRPBF FAQ
1.How can I place an order for LTC5591IUH#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC5591IUH#TRPBF 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 LTC5591IUH#TRPBF reliable?
The price and inventory of LTC5591IUH#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC5591IUH#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC5591IUH#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC5591IUH#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC5591IUH#TRPBF?
LTC5591IUH#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC5591IUH#TRPBF 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 LTC5591IUH#TRPBF?
For technical support, including LTC5591IUH#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC5591IUH#TRPBF requirements.
6.How does Aetrix verify that LTC5591IUH#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC5591IUH#TRPBF 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 LTC5591IUH#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC5591IUH#TRPBF?
All LTC5591IUH#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC5591IUH#TRPBF, 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 LTC5591IUH#TRPBF part is unused and in its original packaging.
Return procedure for LTC5591IUH#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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