My Inquiry
My Account
Analog Devices Inc. LTC5591IUH#PBF
- Part No.:
- LTC5591IUH#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Mixers
- Package:
- 24-WQFN Exposed Pad
- Datasheet:
-
LTC5591IUH#PBF.pdf
- Description:
- IC MIXER 1.3-2.3GHZ 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,625
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC5591IUH#PBF from Analog Devices (formerly Linear Technology) is a dual-channel, high-dynamic-range, passive double-balanced downconverting mixer IC optimized for 1.3GHz–2.3GHz RF input and 190MHz IF output. It delivers 8.5dB conversion gain, 26.2dBm IIP3, and 9.9dB noise figure at 1950MHz with 0dBm LO drive, enabling LTE/W-CDMA diversity receivers requiring high linearity and low noise in compact multichannel base station front-ends.
For engineers reviewing the LTC5591IUH#PBF datasheet, LTC5591IUH#PBF pinout, LTC5591IUH#PBF application, or LTC5591IUH#PBF equivalent, key selection criteria include channel-to-channel isolation (>47dB), independent enable control (ENA/ENB), low-power mode (<287mA total current), and 50Ω single-ended RF/LO interface compatibility with standard SAW/BAW IF filtering.
Technical Context
The LTC5591IUH#PBF integrates two identical mixer channels sharing one LO input, each comprising a passive double-balanced core, differential IF buffer amplifier, LO limiting amplifier, and bias/enable circuitry. RF and LO inputs are single-ended and internally matched to 50Ω across 1.3–2.3GHz and 1.4–2.1GHz ranges respectively.
It supports both low-side (fLO = fRF – fIF) and high-side (fLO = fRF + fIF) injection, with differential IF outputs (IFA+/IFA–, IFB+/IFB–) referenced to 300Ω||2.3pF impedance at 190MHz. Independent shutdown (ENA/ENB) and low-current mode (ISEL) provide flexible power management without compromising RF port match.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 1.3GHz to 2.3GHz - Covers LTE Band 1/3/7/38/40/41 and W-CDMA UMTS 2100 MHz operation. |
| LO Frequency Range | 1.4GHz to 2.1GHz - Enables low-side mixing for 190MHz IF with fLO = 1760MHz at fRF = 1950MHz. |
| Conversion Gain | 8.5dB at 1950MHz - Reduces need for external IF amplification; maintains SNR through lossy SAW filters. |
| IIP3 | 26.2dBm at 1950MHz - Supports strong adjacent-channel blocker rejection in dense cellular environments. |
| Noise Figure | 9.9dB at 1950MHz - Enables high sensitivity in diversity receiver paths with minimal degradation from cascaded stages. |
| Channel Isolation | >47dB - Prevents crosstalk between parallel receive chains in MIMO or diversity architectures. |
| Supply Current | 458mA max (3.3V VCC + 3.3V VCCIF) - Enables thermal design with θJC = 7°C/W in 5mm × 5mm QFN package. |
Pinout & Package
24-lead (5mm × 5mm) plastic QFN package with exposed ground pad (Pin 25). Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RFA, RFB (1, 6) | Single-ended RF inputs | 50Ω matched when LO driven; require DC-blocking capacitors (e.g., 2.7pF) to avoid transformer damage. |
| LO (16) | Single-ended local oscillator input | Internally 50Ω matched in all states; accepts 0dBm drive; requires series DC-blocking capacitor (e.g., 4.7pF). |
| ENA, ENB (14, 17) | Channel enable controls | Logic-high (>2.5V) activates respective mixer; enables independent power gating per channel. |
| IFA+, IFA–, IFB+, IFB– (9,10,21,22) | Differential IF outputs | Open-collector; require external bias via inductors (e.g., 150nH) to VCCIF for 300Ω differential termination. |
| VCCA, VCCB (12, 19) | Mixer/LO supply pins | 3.3V regulated input; each draws ~91mA; bypass with 1µF near pin. |
| IFGNDA, IFGNDB (8, 23) | IF amplifier ground returns | DC return path for IF buffers; typical 100mA per pin; connect directly to ground plane. |
| ISEL (18) | Low-current mode select | Pull high (>2.5V) reduces total current to 287mA while maintaining usable performance for battery-sensitive designs. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent mixer channels | Enables space-efficient diversity or MIMO receiver implementation without discrete duplication. |
| 50Ω single-ended RF and LO interfaces | Eliminates external matching networks; simplifies layout and improves repeatability across production units. |
| 190MHz IF output optimization | Validated performance at 190MHz with SAW BPF integration; supports standard cellular IF filtering. |
| –40°C to 105°C operating range | Qualified for outdoor remote radio unit (RRU) and macro base station deployment without derating. |
| LO input match retention during shutdown | Maintains 50Ω LO port impedance even with ENA/ENB low, preventing LO source pulling in dynamic TDD systems. |
Applications
| 3G/4G Diversity Receiver | Remote Radio Unit (RRU) |
|---|---|
Use Scenario: Dual-path LTE FDD receiver in base station transceiver with antenna diversity switching. IC Role / Device Role / Timing Role: Downconverts 1920–1980MHz RF signals to 190MHz IF using low-side LO injection; provides independent channel enable for path selection. Use Value: 47dB channel isolation prevents inter-path interference; 26.2dBm IIP3 handles co-site blockers without external preselection. |
Use Scenario: Compact, thermally constrained outdoor RRU supporting 2×2 MIMO with integrated digital predistortion. IC Role / Device Role / Timing Role: Dual-channel RF-to-IF conversion stage feeding ADCs; operates continuously at 105°C ambient with θJC = 7°C/W thermal path. Use Value: 8.5dB conversion gain reduces required IF gain staging; low-power mode cuts total consumption by 37% during idle periods. |
| TD-SCDMA Base Station | UMTS Multichannel Receiver |
Use Scenario: TDD-based TD-SCDMA Node B with time-sliced receive paths and fast AGC control. IC Role / Device Role / Timing Role: High-linearity mixer for 2010–2025MHz uplink band; uses ENA/ENB for microsecond-scale channel activation synchronized to TDD frame timing. Use Value: 0.9µs turn-on time ensures full settling before active receive window; 9.9dB NF preserves uplink sensitivity. |
Use Scenario: Wideband UMTS receiver covering multiple bands (Band I/IV/V/VI) with shared LO architecture. IC Role / Device Role / Timing Role: Dual-channel downconverter accepting 1920–2170MHz RF inputs; leverages common LO to minimize phase noise impact on adjacent channels. Use Value: >45dB RF-to-LO isolation prevents LO leakage from degrading adjacent-channel selectivity in wideband front-end. |
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 |
|---|---|---|---|
| HMC1040LP4CE | Higher IIP3 (30.5dBm) but wider 0.7–2.8GHz RF range; requires 5V LO drive; no integrated IF amplifiers. | Requires external IF gain and filtering; better suited for ultra-high-linearity narrowband IF designs. | Select when absolute linearity >28dBm IIP3 is critical and board space allows discrete IF amplification. |
| MAX19997AETX+ | Lower noise figure (8.2dB) but narrower 1.5–2.2GHz RF range; integrated LO divider; 3.3V-only supply. | Supports direct integer-N PLL integration; lacks independent channel shutdown and low-power mode. | Select when LO synthesis integration and lowest possible NF are prioritized over power flexibility and channel independence. |
Compared with HMC1040LP4CE and MAX19997AETX+, the LTC5591IUH#PBF uniquely balances high IIP3, integrated IF amplification, independent channel control, and low-power mode-making it optimal for thermally constrained, multichannel cellular infrastructure where solution size and power agility matter.
Availability
LTC5591IUH#PBF 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 and long product lifecycles.
Supply support for LTC5591IUH#PBF 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 portfolio with rigorous automotive and industrial qualification standards.
The LTC5591IUH#PBF belongs to Linear's high-dynamic-range mixer family designed specifically for cellular infrastructure front-ends, emphasizing linearity, thermal robustness, and integration density in compact QFN packages.
FAQ
What is the recommended LO drive level for optimal performance of the LTC5591IUH#PBF?
The LTC5591IUH#PBF is specified for 0dBm LO drive across its 1.4–2.1GHz range. At 1950MHz RF input, this delivers the rated 8.5dB conversion gain, 26.2dBm IIP3, and 9.9dB noise figure. Drive levels from –4dBm to +6dBm are supported, but deviation from 0dBm reduces IIP3 by up to 3dB and increases noise figure by 0.5dB. The LTC5591IUH#PBF maintains 50Ω LO input match regardless of drive level or enable state.
Can the LTC5591IUH#PBF operate with different supply voltages on VCCA/VCCB and VCCIF?
Yes. The LTC5591IUH#PBF supports split supplies: VCCA/VCCB at 3.3V (±0.2V) for mixer/LO circuits and VCCIF at 3.3V or 5V (±0.2V) for IF amplifiers. At VCCIF = 5V, input P1dB improves from 10.7dBm to 13.9dBm at 1950MHz, enhancing blocking immunity. Total supply current rises to 460mA max, requiring appropriate thermal design. The LTC5591IUH#PBF data sheet specifies separate min/max limits for each rail.
How does the LTC5591IUH#PBF achieve 50Ω RF input match without external components?
The LTC5591IUH#PBF achieves 50Ω RF input match through an integrated transformer with internal tap and bias network, conditioned by proper LO drive (0dBm, 1.4–2.1GHz) and external 2.7pF DC-blocking capacitor (C1A/C1B). Measured S11 exceeds 12dB return loss across 1.3–2.3GHz when these conditions are met. The match is frequency-dependent on LO; mismatch occurs if LO falls outside spec or drive is insufficient. The LTC5591IUH#PBF does not require external shunt or series matching elements.
What is the function of the CTA and CTB pins on the LTC5591IUH#PBF?
CTA (Pin 2) and CTB (Pin 5) are center-taps of the internal RF transformer secondaries for Channels A and B. They provide access to the transformer midpoint for optional bypass capacitor connection (e.g., 2.2–3.3pF) to optimize channel-to-channel isolation-improving it from 47dB to >50dB at specific frequencies like 1950MHz. Each pin has a nominal 1.2V DC bias and must be DC-isolated from ground and VCC. The LTC5591IUH#PBF datasheet shows isolation vs. C8 value curves to guide selection.
Does the LTC5591IUH#PBF support high-side LO injection, and what are the trade-offs?
Yes, the LTC5591IUH#PBF supports high-side LO injection (fLO = fRF + fIF) for RF inputs from 1300–1800MHz. At 1600MHz RF, it delivers 8.6dB gain, 24.6dBm IIP3, and 10.1dB NF-slightly lower linearity and higher noise than low-side mode at 1950MHz. Spurious performance differs: 2LO–2RF dominates instead of 2RF–2LO. The LTC5591IUH#PBF maintains identical enable, power, and thermal behavior in both configurations; only RF/LO frequency planning changes.
LTC5591IUH#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-WQFN Exposed Pad
- Packaging:
- Tube
- 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#PBF FAQ
1.How can I place an order for LTC5591IUH#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC5591IUH#PBF 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#PBF reliable?
The price and inventory of LTC5591IUH#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC5591IUH#PBF is usually 5 days.
3.What payment methods are accepted for LTC5591IUH#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC5591IUH#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC5591IUH#PBF?
LTC5591IUH#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC5591IUH#PBF 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#PBF?
For technical support, including LTC5591IUH#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC5591IUH#PBF requirements.
6.How does Aetrix verify that LTC5591IUH#PBF is sourced from the original manufacturer or authorized distributors?
All LTC5591IUH#PBF 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#PBF meets industry standards.
7.What is the process for return or replacement of LTC5591IUH#PBF?
All LTC5591IUH#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC5591IUH#PBF, 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#PBF part is unused and in its original packaging.
Return procedure for LTC5591IUH#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC5591IUH#PBF 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…
