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Analog Devices Inc. LTC5509ESC6#TRMPBF
- Part No.:
- LTC5509ESC6#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Detectors
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LTC5509ESC6#TRMPBF.pdf
- Description:
- IC RF DETECT 300MHZ-3GHZ SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,639
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Product details
Overview
LTC5509ESC6#TRMPBF from Analog Devices (formerly Linear Technology) is a monolithic RF power detector IC designed for envelope detection and RSSI measurement in wireless transceivers. It features an on-chip temperature-compensated Schottky diode peak detector, buffered DC output, 300MHz–3GHz frequency coverage, –30dBm to +6dBm input power range, and operates from 2.7V to 6V supply. It is used in GSM/EDGE mobile front-ends for transmit power monitoring.
For engineers reviewing the LTC5509ESC6#TRMPBF datasheet, LTC5509ESC6#TRMPBF pinout, LTC5509ESC6#TRMPBF application, or LTC5509ESC6#TRMPBF equivalent, key selection criteria include its linear VOUT vs. RF input voltage response, sub-2µA shutdown current, SC70-6 package compatibility, and absence of gain compression across its full dynamic range.
Technical Context
The LTC5509ESC6#TRMPBF integrates a passive Schottky diode detector with internal biasing (60µA), a 28pF peak-detector capacitor, and a rail-to-rail buffer amplifier - all in a single SC70-6 die. Its RFIN pin is referenced to VCC and includes a 250Ω internal termination, enabling direct AC-coupled RF input without external matching networks at 850MHz/1.85GHz/3GHz.
Operation is controlled via SHDN (active-high), with <2µA shutdown current and 8–20µs enable time. The buffered VOUT delivers 0.25V–3V swing (at VCC = 3.6V), supports 2mA load, and maintains linearity over temperature (–40°C to 85°C) due to on-die temperature compensation of the Schottky junction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 300MHz to 3GHz - covers GSM, DCS, PCS, UMTS, LTE bands without re-tuning. |
| Input Power Range | –30dBm to +6dBm - enables accurate RSSI across cellular transmit power levels (2G/3G). |
| Supply Voltage | 2.7V to 6V - supports single Li-ion (3.6V) or triple NiMH (4.5V) battery operation. |
| Operating Current | 580–850µA - low quiescent draw preserves battery life in portable RF systems. |
| Shutdown Current | <2µA - allows deep-sleep mode during idle TX/RX intervals. |
| VOUT Bandwidth | 1.5MHz - supports AM/ASK demodulation up to 1.5Mbps data rate. |
| VOUT Slew Rate | 8V/µs - ensures fast transient response to RF envelope changes. |
Pinout & Package
Package: SC70-6 (6-lead plastic SC70), 2.0mm × 1.25mm footprint, 0.65mm pitch, JEDEC MO-203AA compliant. Pin 1 marked by index area notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-high shutdown control | Logic high (≥1.4V) enables detector; internal 150kΩ pull-down ensures default disable. |
| 2,5 - GND | Analog ground reference | Dual ground pins reduce noise coupling between RF and analog sections. |
| 3 - VOUT | Buffered DC output | Delivers linear voltage proportional to RF input amplitude; drives 2kΩ load with 33pF max capacitance. |
| 4 - VCC | Power supply input | 2.7–6V operation; requires local 0.1µF ceramic bypass to GND. |
| 6 - RFIN | RF input (VCC-referenced) | Accepts AC-coupled RF signal; internal 250Ω termination and Schottky detector eliminate external bias network. |
Key Features
| Feature | Design Value |
|---|---|
| Temperature-compensated Schottky detector | Maintains ±0.5dB accuracy over –40°C to 85°C without external calibration. |
| No gain compression architecture | Ensures linear VOUT vs. RF input voltage - critical for true-envelope fidelity in AM/ASK demodulation. |
| Integrated 28pF peak-detector capacitor | Eliminates external capacitor, reducing BOM count and layout sensitivity at 3GHz. |
| VCC-referenced RFIN | Enables direct coupling from common-emitter/power-amplifier output stages without level-shifting circuitry. |
| Fast 8–20µs enable time | Supports burst-mode RF power measurement in TDMA-based protocols (e.g., GSM timeslots). |
Applications
| GSM/EDGE Mobile Transmitter Monitoring | Optical Data Link RSSI |
|---|---|
Use Scenario: Real-time transmit power feedback in dual-band GSM/EDGE handset power amplifiers. IC Role / Device Role / Timing Role: Envelope detector providing DC voltage proportional to PA output amplitude for closed-loop AGC. Use Value: Enables compliance with ETSI EN 301 511 spectral mask and output power tolerance (±2dB) across battery voltage sag. | Use Scenario: Signal strength indication in fiber-to-the-home (FTTH) optical receivers using RF-over-fiber modulation. IC Role / Device Role / Timing Role: RF power detector converting photodiode IF output to calibrated DC RSSI for link margin estimation. Use Value: Delivers stable –30dBm to +6dBm response independent of temperature drift, eliminating manual recalibration. |
| Wireless Data Modem AGC | RF Power Alarm in Cable Infrastructure |
Use Scenario: Automatic gain control in 802.11b/g WLAN client radios operating in noisy ISM band environments. IC Role / Device Role / Timing Role: RSSI generator feeding baseband processor to dynamically adjust LNA/mixer gain before ADC saturation. Use Value: 1.5MHz bandwidth supports rapid AGC loop response (<10µs settling), preventing packet loss during channel handoff. | Use Scenario: Overpower/underrun detection in CATV headend RF distribution amplifiers. IC Role / Device Role / Timing Role: Fault-monitoring detector triggering shutdown when upstream RF input deviates beyond ±3dB of nominal –10dBm. Use Value: Sub-2µA shutdown current enables always-on monitoring without impacting system standby power budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RF power detection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC5508IMS6#TRMPBF | Wider 300MHz–7GHz range; same SC70-6 package; higher 12dBm max input. | Better suited for 5G FR1 and Wi-Fi 6E front-ends requiring >3GHz coverage. | Select LTC5508IMS6#TRMPBF only if operation above 3GHz is required; otherwise LTC5509ESC6#TRMPBF offers tighter low-end accuracy at lower cost. |
| LTC5505IDD#TRMPBF | 40dB dynamic range (–40dBm to 0dBm); different 8-lead DFN package; no internal termination. | Requires external 50Ω matching and bias network; optimized for precision lab-grade measurements. | Choose LTC5505IDD#TRMPBF when extended low-power sensitivity is mandatory; LTC5509ESC6#TRMPBF provides simpler integration for production RF modules. |
Compared with LTC5508IMS6#TRMPBF and LTC5505IDD#TRMPBF, the LTC5509ESC6#TRMPBF delivers optimal balance of frequency coverage, ease of use (integrated termination), and power efficiency for mainstream 2G/3G/4G mobile infrastructure - making it the preferred choice where 3GHz upper limit and SC70-6 footprint are design constraints.
Availability
LTC5509ESC6#TRMPBF is available at Aetrix Electronics and suitable for GSM/EDGE handset manufacturing, optical receiver module assembly, and wireless modem production requiring stable component supply and full traceability.
Supply support for LTC5509ESC6#TRMPBF 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, Inc. (ADI) is a global semiconductor leader specializing in high-performance analog, mixed-signal, and RF technologies for precision signal processing.
The LTC5509ESC6#TRMPBF belongs to ADI's legacy Linear Technology RF detector family, engineered specifically for low-power, wide-dynamic-range envelope detection in battery-operated wireless transceivers.
FAQ
What is the absolute maximum RF input voltage rating for the LTC5509ESC6#TRMPBF?
The RFIN pin of the LTC5509ESC6#TRMPBF has an absolute maximum voltage rating of (VCC ± 1V) to 7V. Exceeding this range risks permanent damage to the integrated Schottky diode. For typical operation at VCC = 3.6V, the safe RFIN peak voltage is ≤4.6V. Always use a series AC-coupling capacitor to block DC offset and prevent violation of this limit.
Does the LTC5509ESC6#TRMPBF require external calibration for temperature drift?
No, the LTC5509ESC6#TRMPBF does not require external calibration. Its on-die temperature-compensated Schottky diode and matched bias circuitry maintain output accuracy within ±0.5dB over –40°C to 85°C, as verified in the datasheet's typical performance curves (Figures 5509 G03–G04). This eliminates factory calibration steps in high-volume mobile RF modules.
Can the LTC5509ESC6#TRMPBF be used for AM demodulation, and what is its supported data rate?
Yes, the LTC5509ESC6#TRMPBF supports AM and ASK demodulation with a 1.5MHz VOUT bandwidth. Its 8V/µs slew rate and linear transfer function allow faithful reconstruction of modulation envelopes up to ~1.5Mbps. Application Note 91 confirms successful use in low-cost AM demodulator circuits without additional filtering components.
What is the recommended PCB layout practice for the RFIN pin of the LTC5509ESC6#TRMPBF?
Place a 33pF AC-coupling capacitor as close as possible to the RFIN pin (Pin 6), followed by a short microstrip trace to the RF source. Avoid stubs or vias near RFIN. Use solid ground plane beneath the SC70-6 footprint, and route VCC with 0.1µF ceramic capacitor directly between Pin 4 and adjacent GND (Pin 2 or 5). Do not share RFIN return path with digital signals.
How does the LTC5509ESC6#TRMPBF differ from the LTC5505 in terms of input impedance and matching requirements?
The LTC5509ESC6#TRMPBF features an internal 250Ω RFIN termination and VCC-referenced input, enabling direct AC-coupled connection without external matching. In contrast, the LTC5505 requires external 50Ω termination and bias tee, increasing component count and layout complexity. This makes the LTC5509ESC6#TRMPBF significantly easier to integrate into space-constrained mobile RF designs.
LTC5509ESC6#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Frequency:
- 300MHz ~ 3GHz
- RF Type:
- General Purpose
- Input Range:
- -30dBm ~ 6dBm
- Accuracy:
- -
- Voltage - Supply:
- 2.7V ~ 6V
- Mounting Type:
- 600 µA
- Supplier Device Package:
- Surface Mount
- Current - Supply:
- SC-70-6
LTC5509ESC6#TRMPBF FAQ
1.How can I place an order for LTC5509ESC6#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC5509ESC6#TRMPBF 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 LTC5509ESC6#TRMPBF reliable?
The price and inventory of LTC5509ESC6#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC5509ESC6#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC5509ESC6#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC5509ESC6#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC5509ESC6#TRMPBF?
LTC5509ESC6#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC5509ESC6#TRMPBF 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 LTC5509ESC6#TRMPBF?
For technical support, including LTC5509ESC6#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC5509ESC6#TRMPBF requirements.
6.How does Aetrix verify that LTC5509ESC6#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC5509ESC6#TRMPBF 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 LTC5509ESC6#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC5509ESC6#TRMPBF?
All LTC5509ESC6#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC5509ESC6#TRMPBF, 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 LTC5509ESC6#TRMPBF part is unused and in its original packaging.
Return procedure for LTC5509ESC6#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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