Analog Devices Inc./Maxim Integrated MAX2027EUP+TD

Overview

MAX2027EUP+TD from Maxim Integrated is a high-performance, digitally controlled variable-gain amplifier (VGA) for IF signal chains operating from 50MHz to 400MHz. It integrates a 5-bit digital attenuator (0–23dB range, ±0.05dB state-to-state accuracy) and a fixed-gain high-linearity amplifier in a single 20-pin TSSOP-EP package. Its output IP3 of 35dBm at all gain settings and 4.7dB noise figure at maximum gain make it suitable for cellular base station receiver/transmitter gain control.

For engineers reviewing the MAX2027EUP+TD datasheet, MAX2027EUP+TD pinout, MAX2027EUP+TD application, or MAX2027EUP+TD equivalent, this device supports precise IF gain adjustment in broadband systems, automatic test equipment, and terrestrial wireless links where dynamic range control, low distortion, and thermal stability across -40°C to +85°C are critical.

Technical Context

The MAX2027EUP+TD implements a cascaded architecture: a digitally controlled 5-bit attenuator (B0–B4 inputs) followed by a fixed-gain amplifier with negative feedback topology. The attenuator provides 23dB of total attenuation in 1dB steps, with absolute accuracy of ±0.15/–0.05dB and relative accuracy of ±0.05dB between adjacent states.

Its RF_IN and RF_OUT ports feature on-chip matching below 250MHz and require external DC-blocking capacitors; above 250MHz, discrete matching components (e.g., 11nH inductors, 5pF capacitors) are recommended per Table 2. Biasing relies on ISET (825Ω to GND), AMPIN–IBIAS choke coupling (330nH), and RF_OUT pull-up choke (680nH to VCC).

Key Specifications

Pinout & Package

MAX2027EUP+TD is housed in a thermally enhanced 20-pin TSSOP-EP (exposed pad) package measuring 4.4mm × 6.5mm, with the EP soldered directly to PCB ground for optimal RF grounding and thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar IF variable-gain amplifier applications.

Compared with ADL5330ACPZ-R7 and LMH6514MM/NOPB, the MAX2027EUP+TD uniquely combines digital 1dB-step control, guaranteed ±0.05dB repeatability, and integrated 50–250MHz matching-making it optimal for factory-calibrated, thermally stable IF gain blocks where deterministic digital control and minimal external components are design priorities.

Availability

MAX2027EUP+TD is available at Aetrix Electronics and suitable for cellular infrastructure, terrestrial microwave links, and automated test equipment requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for MAX2027EUP+TD 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and RF solutions for industrial, communications, and computing markets.

The MAX2027EUP+TD belongs to Maxim's IF signal chain portfolio, designed specifically for digitally programmable gain control in wireless infrastructure receivers and transmitters where linearity, accuracy, and thermal robustness are non-negotiable.

FAQ

What is the exact gain control resolution and accuracy of the MAX2027EUP+TD?

The MAX2027EUP+TD provides 1dB gain resolution across its 23dB attenuation range. Its state-to-state accuracy is ±0.05dB, and absolute attenuation accuracy is +0.15dB/–0.05dB versus ideal. These values are measured and guaranteed over the full –40°C to +85°C operating temperature range, making the MAX2027EUP+TD suitable for precision automatic gain control loops where repeatability is essential.

Does the MAX2027EUP+TD require external matching components for operation at 400MHz?

Yes. While the MAX2027EUP+TD includes on-chip matching optimized for 50–250MHz, operation at 400MHz requires external matching: 8.7nH inductors (L3/L4) and 5pF capacitors (C8/C9) per Table 2 of the datasheet. Without these, input/output return loss degrades below the specified 15dB minimum, compromising gain flatness and OIP3 performance. The MAX2027EUP+TD's internal matching does not extend to the upper end of its 400MHz rated bandwidth.

What is the role of the ISET pin on the MAX2027EUP+TD, and what resistor value is required?

The ISET pin on the MAX2027EUP+TD sets the amplifier's bias current and directly influences output IP3 and supply current. A precision 825Ω ±1% resistor must be connected from ISET to GND. This value establishes a nominal 0.9mA ISET current, resulting in ~60mA total supply current and the specified 35dBm OIP3. Deviations from 825Ω alter linearity and power consumption, so the MAX2027EUP+TD requires strict adherence to this resistor value for datasheet performance.

Can the MAX2027EUP+TD operate with a 3.3V supply?

No. The MAX2027EUP+TD is specified only for VCC = +4.75V to +5.25V. Absolute maximum ratings limit all pins (except AMPIN, IBIAS, ISET) to –0.3V to +5.5V, and functional operation is not characterized below 4.75V. Attempting 3.3V operation will result in degraded gain, increased noise figure, reduced OIP3, and potential failure to meet timing specifications for B0–B4 logic inputs. The MAX2027EUP+TD requires a compliant 5V supply rail.

How is thermal management handled for the MAX2027EUP+TD in high-power applications?

The MAX2027EUP+TD uses a thermally enhanced 20-pin TSSOP-EP package with an exposed paddle (EP) that must be soldered to a solid PCB ground plane using multiple thermal vias. This provides the primary thermal conduction path: junction-to-board resistance is minimized to sustain 1.7W continuous power dissipation at +70°C ambient. Layout guidelines mandate short ground traces to EP and avoidance of thermal isolation-failure to implement proper EP grounding will cause junction temperature to exceed +150°C, triggering reliability degradation or permanent damage to the MAX2027EUP+TD.