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Analog Devices Inc./Maxim Integrated MAX2065ETL+T
- Part No.:
- MAX2065ETL+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- RF Amplifiers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
MAX2065ETL+T.pdf
- Description:
- IC AMP CELL 50MHZ-1GHZ 40TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,005
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Product details
Overview
MAX2065ETL+T from Maxim Integrated is a high-linearity 50MHz–1000MHz analog/digital variable-gain amplifier (VGA) featuring dual independent attenuators, +19.4dB typical small-signal gain, 6.5dB noise figure at maximum gain, and +42dBm OIP3 in high-current mode. It serves as a programmable RF gain stage in base station receiver chains requiring fast gain adaptation and blocker resilience.
For engineers reviewing the MAX2065ETL+T datasheet, MAX2065ETL+T pinout, MAX2065ETL+T application, or MAX2065ETL+T equivalent, this VGA supports SPI/parallel digital control, on-chip 8-bit DAC for analog attenuation, four rapid-fire preprogrammed states, and operates from single +5V or +3.3V supply across –40°C to +85°C.
Technical Context
The MAX2065ETL+T integrates three cascaded RF stages-amplifier, digital attenuator, and analog attenuator-with independent RF input/output ports per stage, enabling flexible signal-path configuration to prioritize noise figure (amplifier-first), linearity (amplifier-last), or balanced trade-offs. Its architecture supports simultaneous analog and digital gain control with 62dB total range (31dB analog + 31dB digital).
Digital attenuation uses SPI-compatible or parallel interface with 1dB steps and <25ns switching; analog attenuation is controlled via external voltage (0.25V–2.75V) or internal 8-bit DAC output. The device includes adjustable bias via RSET to trade current consumption (73–146mA) against linearity performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 50MHz to 1000MHz - supports full-band operation across WCDMA, cdma2000®, LTE, WiMAX, and DOCSIS®-compliant systems. |
| Small Signal Gain | +19.4dB typical at 200MHz - enables high dynamic range without external amplification in IF/RF gain stages. |
| Noise Figure | 6.5dB typical at max gain - ensures low degradation of system sensitivity in receiver front-ends. |
| OIP3 | +42dBm at 200MHz (HC mode) - maintains signal integrity under strong interferers in dense spectral environments. |
| Total Gain Range | 62dB (31dB analog + 31dB digital) - provides fine-grained, multi-domain control for AGC loops and calibration routines. |
| Supply Voltage | +5V (full performance) or +3.3V (reduced performance) - simplifies power architecture in mixed-voltage RF subsystems. |
| Package | 40-pin thin QFN (6mm × 6mm, exposed pad) - enables compact, thermally efficient layout in space-constrained base station modules. |
Pinout & Package
The MAX2065ETL+T is housed in a 40-pin thin QFN package (6mm × 6mm) with exposed thermal pad (T4066-3). Pin assignments are defined per Maxim's official pin configuration diagram (Rev 0, p.2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | +5V or +3.3V main supply rail; decoupling required near pin for RF stability. |
| GND | Ground reference | Common return for analog, digital, and RF sections; connects to exposed pad for thermal and electrical integrity. |
| AMP_IN / AMP_OUT | Amplifier RF I/O | 50Ω-matched differential-capable ports; placement defines amplifier-first or amplifier-last topology. |
| ATTEN1_IN / ATTEN1_OUT / ATTEN2_IN / ATTEN2_OUT | Dual attenuator RF I/O | Independent 50Ω paths allow reordering of attenuation stages to optimize NF/OIP3 trade-off. |
| STATE_A / STATE_B | Rapid-fire state select | 2-pin binary control selects one of four preprogrammed digital attenuation states without SPI reconfiguration. |
| DATA / CS / CLK / SER/PAR | SPI/parallel interface | Configures digital attenuator and DAC; SER/PAR selects serial vs. parallel bus mode. |
| VDAC_EN / VREF_SELECT | DAC control | Enables internal 8-bit DAC and selects reference source (internal or external) for analog attenuation. |
| RSET | Bias current setting | External resistor sets operating current mode (LC/HC), directly trading power vs. linearity. |
Key Features
| Feature | Design Value |
|---|---|
| Four rapid-fire preprogrammed states | Enables sub-25ns gain transitions between user-defined attenuation levels for fast-attack blocker protection and ADC overdrive prevention. |
| On-chip 8-bit DAC for analog control | Eliminates external DAC components; provides precise 0.25V–2.75V analog control voltage with ±0.05V drift over temperature. |
| Configurable RF signal path | Three independent RF stages permit amplifier-first (low NF), amplifier-last (high OIP3), or hybrid topologies without redesign. |
| Adjustable bias via RSET | Allows continuous tuning of supply current (73–146mA) and linearity (OIP3 from +33dBm to +42dBm) for power-sensitive deployments. |
| Low digital switching overshoot | <0.05dB amplitude error between states ensures stable envelope tracking in wideband modulation schemes like OFDMA and QAM. |
Applications
| WCDMA/cdma2000® Base Stations | GSM 850/900 EDGE Base Stations |
|---|---|
Use Scenario: Uplink receiver chain in macrocell BTS handling multiple carriers and adjacent-channel interferers. IC Role / Device Role / Timing Role: Programmable IF/RF VGA providing AGC-controlled gain before ADC, with rapid-fire state switching to suppress burst interferers. Use Value: 62dB gain range and +42dBm OIP3 maintain EVM compliance under +20dBm RF input while preventing ADC saturation. |
Use Scenario: Dual-band transceiver module supporting GSM850 and GSM900 with shared RF front-end. IC Role / Device Role / Timing Role: Digitally reconfigurable gain block compensating for antenna mismatch and cable loss across bands. Use Value: 0.5dB gain flatness over 100MHz bandwidth ensures consistent channel response in 200kHz GSM channels. |
| WiMAX/LTE Customer Premise Equipment | Cable Modem Termination Systems (CMTS) |
Use Scenario: Outdoor CPE unit operating in unlicensed 3.5GHz band with variable path loss and interference. IC Role / Device Role / Timing Role: Analog/digital VGA in receive path adapting to fading and co-channel noise in real time. Use Value: Low 6.5dB NF preserves SNR in weak-signal conditions; +19dBm P1dB handles high-level upstream bursts without compression. |
Use Scenario: Downstream RF path in headend equipment delivering DOCSIS®-compliant QAM signals to 100+ subscribers. IC Role / Device Role / Timing Role: Precision gain control element in broadband upconverter output stage, ensuring flat group delay and phase response. Use Value: 18° max insertion phase change over analog control range minimizes constellation rotation in 256-QAM signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog/digital VGA applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX2066ETL+ | Digital-only VGA (no analog attenuator); identical pinout, same 31dB digital range and 25ns switching. | Lacks analog control path and DAC; unsuitable where voltage-based AGC or fine analog trimming is required. | Select when only digital gain control is needed and board space allows removal of external DAC/voltage source. |
| MAX2067ETL+ | Analog-only VGA (no digital attenuator); shares same RF architecture but omits SPI/parallel interface and rapid-fire logic. | Cannot support firmware-driven gain sequencing or state recall; limited to analog loop or manual calibration. | Choose for cost-sensitive designs where digital programmability adds no value and analog-only control suffices. |
Compared with MAX2066ETL+ and MAX2067ETL+, the MAX2065ETL+ uniquely combines both analog and digital gain domains in one IC-enabling hybrid AGC architectures, faster transient response than analog-only VGAs, and finer resolution than digital-only solutions-without requiring additional external components.
Availability
MAX2065ETL+T is available at Aetrix Electronics and suitable for cellular infrastructure, broadband wireless access, and military communications systems requiring stable component supply, extended temperature operation, and long-term lifecycle support.
Supply support for MAX2065ETL+T 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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and RF ICs for demanding industrial, communications, and automotive applications.
The MAX2065ETL+T belongs to Maxim's high-linearity RF VGA product line, engineered specifically for multistandard base station receivers needing wideband gain control, rapid blocker mitigation, and flexible power/performance scaling.
FAQ
What is the operating temperature range for the MAX2065ETL+T?
The MAX2065ETL+T is specified for operation from –40°C to +85°C, with electrical performance guaranteed across this extended industrial temperature range. Junction temperature must not exceed +150°C, and thermal design should account for θJC = +10°C/W and θJA = +38°C/W using the exposed pad for heatsinking.
Does the MAX2065ETL+T support both SPI and parallel digital control?
Yes, the MAX2065ETL+T supports both interfaces: the SER/PAR pin selects between SPI-compatible serial mode (using DATA, CS, CLK) and 5-bit parallel mode (using D0–D4). Both modes provide full 31dB digital attenuation control in 1dB steps with identical timing specifications.
How does the "rapid-fire" feature work on the MAX2065ETL+T?
The MAX2065ETL+T's rapid-fire function uses two pins (STATE_A and STATE_B) to select among four user-preprogrammed digital attenuation states stored in internal registers via SPI. This enables immediate gain switching (<25ns) without retransmitting SPI commands-critical for fast-attack interference suppression in LTE/WiMAX receivers.
Can the MAX2065ETL+T operate from a +3.3V supply?
Yes, the MAX2065ETL+T operates from a single +3.3V supply with slightly reduced performance: OIP3 drops to +37.5dBm, NF increases to 6.7dB, and supply current decreases to 60–80mA. Full +5V performance is recommended for maximum linearity in base station applications.
What is the role of the RSET pin on the MAX2065ETL+T?
The RSET pin sets the MAX2065ETL+T's bias current via an external resistor, allowing selection between low-current (LC) and high-current (HC) modes. In HC mode (RSET = 10kΩ), ICC = 124–146mA and OIP3 = +42dBm; in LC mode (RSET = open), ICC = 73–93mA and OIP3 = +33dBm-enabling direct power/linearity trade-off.
MAX2065ETL+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Frequency:
- 50MHz ~ 1GHz
- P1dB:
- 18.7dBm
- Gain:
- 19.4dB
- Noise Figure:
- 6.8dB
- RF Type:
- Cellular, CDMA, GSM
- Voltage - Supply:
- 3V ~ 3.6V, 4.75V ~ 5.25V
- Current - Supply:
- 124mA
- Test Frequency:
- 350MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-TQFN (6x6)
MAX2065ETL+T FAQ
1.How can I place an order for MAX2065ETL+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX2065ETL+T 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 MAX2065ETL+T reliable?
The price and inventory of MAX2065ETL+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX2065ETL+T is usually 5 days.
3.What payment methods are accepted for MAX2065ETL+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX2065ETL+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX2065ETL+T?
MAX2065ETL+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX2065ETL+T 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 MAX2065ETL+T?
For technical support, including MAX2065ETL+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX2065ETL+T requirements.
6.How does Aetrix verify that MAX2065ETL+T is sourced from the original manufacturer or authorized distributors?
All MAX2065ETL+T 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 MAX2065ETL+T meets industry standards.
7.What is the process for return or replacement of MAX2065ETL+T?
All MAX2065ETL+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX2065ETL+T, 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 MAX2065ETL+T part is unused and in its original packaging.
Return procedure for MAX2065ETL+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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