Analog Devices Inc./Maxim Integrated MAX4452EUK+T

Overview

The MAX4452EUK+T from Maxim Integrated is a single-channel, unity-gain stable, rail-to-rail output operational amplifier optimized for low-power, high-speed signal conditioning in portable systems. It delivers 200MHz -3dB bandwidth, 95V/µs slew rate, and 20ns rise/fall times while consuming only 620µA per amplifier from a +2.7V to +5.25V single supply - enabling use in cellular telephone baseband chains and keyless entry receiver front-ends.

For engineers reviewing the MAX4452EUK+T datasheet, MAX4452EUK+T pinout, MAX4452EUK+T application, or MAX4452EUK+T equivalent, this page provides verified electrical specifications, SOT23-5 package layout details, real-world application context for battery-powered RF signal paths, and validated alternative op-amps with documented gain-bandwidth and stability trade-offs.

Technical Context

The MAX4452EUK+T employs a voltage-feedback architecture with internal unity-gain compensation, enabling stable operation at AVCL = +1V/V without external compensation. Its bipolar process delivers low input bias current (0.8–3µA) and high open-loop gain (60–80dB), while rail-to-rail output stage design ensures 180mV VOH and 75mV VOL swing into 1kΩ at VCC = +5V.

Input common-mode range extends from (VEE − 0.1V) to (VCC − 1.5V), supporting ground-sensing operation in single-supply configurations. The device exhibits 30MHz 0.1dB gain flatness and −83dBc SFDR at 1MHz (VCC = +5V, VOUT = 2Vp-p), confirming suitability for precision baseband amplification where harmonic distortion must remain below −70dBc.

Key Specifications

Pinout & Package

The MAX4452EUK+T is housed in a 5-pin SOT23-5 package (JEDEC MO-178), with 1.3mm × 2.8mm footprint and 0.95mm height - compatible with standard pick-and-place equipment and high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed, low-power op-amp applications.

Compared with MAX4452EXK+T and ADA4891-1ARJZ-R7, the MAX4452EUK+T offers optimal balance of 200MHz bandwidth, 620µA quiescent current, and SOT23-5 manufacturability - making it the preferred choice for cost-sensitive, space-constrained portable RF signal chains requiring minimal layout redesign.

Availability

The MAX4452EUK+T is available at Aetrix Electronics and suitable for battery-powered instruments, cellular telephones, and keyless entry systems requiring stable component supply with guaranteed long-term availability and consistent parametric performance across production lots.

Supply support for MAX4452EUK+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 power management ICs for demanding industrial, communications, and consumer applications.

The MAX4452EUK+T belongs to Maxim's high-speed, low-power op-amp product line targeting portable RF and baseband signal conditioning - engineered specifically for unity-gain stability, rail-to-rail output swing, and minimal supply current in 3V–5V systems.

FAQ

What is the maximum capacitive load the MAX4452EUK+T can drive without oscillation?

The MAX4452EUK+T is stable driving up to 22pF directly, as specified in the datasheet's "Capacitive Load Drive" parameter. Exceeding this value introduces phase margin loss and may cause ringing or oscillation; an isolation resistor (RISO) must be added in series with the output when driving larger loads such as ADC input capacitance (>25pF) or long PCB traces. Figure 1 in the MAX4452EUK+T datasheet provides RISO values versus capacitive load.

Does the MAX4452EUK+T support true rail-to-rail input operation?

No, the MAX4452EUK+T features rail-to-rail *output* but not rail-to-rail *input*. Its input common-mode voltage range is specified from (VEE − 0.1V) to (VCC − 1.5V), meaning it cannot sense signals within 1.5V of the positive rail. This ground-sensing input architecture enables accurate operation near VEE (GND) but requires level-shifting or biasing for signals approaching VCC in single-supply configurations.

Can the MAX4452EUK+T be used in inverting amplifier configurations with gain greater than 1?

Yes, the MAX4452EUK+T supports inverting configurations with gain >1, though its internal compensation is optimized for unity gain. For gains ≥5V/V, stability margins decrease; the MAX4352 variant is recommended instead as it is compensated for minimum closed-loop gain of +5V/V and offers superior phase margin in high-gain setups. When using MAX4452EUK+T in non-unity gain, verify stability via simulation and bench testing with actual layout parasitics.

What is the typical power-up settling time for the MAX4452EUK+T?

The MAX4452EUK+T exhibits a typical power-up 1% settling time of 100µs, as measured from VCC ramp to stable output (Note 2 in datasheet). This behavior is critical for power-gated systems like keyless entry receivers, where rapid turn-on after sleep mode must avoid signal corruption. The device draws only 620µA during active operation, enabling efficient duty-cycled operation without significant wake-up delay penalties.

How does temperature affect the input offset voltage of the MAX4452EUK+T?

The MAX4452EUK+T has a typical input offset voltage temperature coefficient (TCVOS) of 7µV/°C, resulting in ≤±0.7mV drift over the full −40°C to +85°C operating range. Figure toc37 in the datasheet confirms linear VOS vs. temperature behavior, with worst-case variation remaining within ±2.0mV across temperature - sufficient for DC-coupled instrumentation where absolute accuracy is secondary to repeatability.