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Analog Devices Inc./Maxim Integrated MAX4254ESD+
- Part No.:
- MAX4254ESD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4254ESD+.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,693
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Product details
Overview
MAX4254ESD+ from Analog Devices is a quad-channel, unity-gain stable, rail-to-rail output operational amplifier optimized for low-noise (7.9nV/√Hz at 30kHz), low-distortion (0.0004% THD+N at 1kHz), and ultra-low quiescent current (400µA per amplifier) operation from 2.4V to 5.5V single supply. It delivers 3MHz gain-bandwidth, ±5mA output drive into 1kΩ, and rail-to-rail swing within 8mV of supplies with 10kΩ load - ideal for precision ADC buffering in portable instrumentation.
For engineers reviewing the MAX4254ESD+ datasheet, MAX4254ESD+ pinout, MAX4254ESD+ application, or MAX4254ESD+ equivalent, key selection criteria include its guaranteed rail-to-rail input common-mode range (to ground), 400pF capacitive-load stability, unity-gain stability, and absence of shutdown functionality - distinguishing it from MAX4251/MAX4253/MAX4256 variants.
Technical Context
The MAX4254ESD+ belongs to the MAX4249–MAX4257 family of single-supply op amps featuring a complementary input stage enabling ground-sensing operation and a push-pull output stage delivering true rail-to-rail swing while maintaining DC accuracy. Its unity-gain stability is achieved via internal compensation optimized for AV = 1V/V, with 74° phase margin and 10dB gain margin at 5V supply.
It operates across –40°C to +85°C, supports input common-mode voltage from –0.2V to VDD–1.1V, and exhibits excellent DC performance: 70µV max input offset voltage, 1pA typical input bias current, and 116dB large-signal voltage gain - enabling high-precision signal conditioning without external trimming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 3MHz - enables stable unity-gain operation with sufficient bandwidth for audio and sensor signal conditioning up to ~100kHz closed-loop. |
| Input Voltage-Noise Density | 7.9nV/√Hz at 30kHz - ensures minimal added noise when amplifying low-level signals from strain gauges or medical transducers. |
| Total Harmonic Distortion + Noise | 0.0004% at 1kHz, 2VP-P, RL=1kΩ - preserves signal fidelity in high-resolution data acquisition systems (e.g., 16-bit ADC front-ends). |
| Quiescent Supply Current | 400µA per amplifier - allows four-channel operation at <1.6mA total, critical for battery-powered portable equipment. |
| Rail-to-Rail Output Swing | Within 8mV of VDD/VSS with 10kΩ load - maximizes dynamic range in low-voltage (2.4V–5.5V) systems without headroom loss. |
| Capacitive-Load Drive | Stable up to 400pF - eliminates need for isolation resistors in most PCB layouts with moderate trace capacitance or ADC input filtering. |
| Input Common-Mode Range | Extends to –0.2V (below ground) and up to VDD–1.1V - supports direct interfacing with bipolar sensors and single-supply reference-based circuits. |
Pinout & Package
MAX4254ESD+ is housed in a 14-pin SO (Small Outline) package with exposed pad (package code S14+1), measuring 8.65mm × 3.91mm × 1.75mm. Pin 1 is marked with a dot or notch; pin numbering follows standard SOIC convention.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Amplifier A output - drives external load or next-stage input; rail-to-rail capable with 8mV headroom. |
| 2 | INA− | Inverting input of Amp A - high-impedance node (1000GΩ); sensitive to layout-induced noise. |
| 3 | INA+ | Noninverting input of Amp A - accepts ground-referenced or midsupply-biased signals. |
| 4 | VSS | Negative supply / ground reference - must be low-impedance connection to minimize PSRR degradation. |
| 5 | INB− | Inverting input of Amp B - electrically isolated from other channels; shares no internal coupling. |
| 6 | INB+ | Noninverting input of Amp B - supports independent differential or single-ended configurations per channel. |
| 7 | OUTB | Amplifier B output - identical performance to OUTA; enables dual-channel signal processing. |
| 8 | N.C. | No connection - not internally bonded; must remain unconnected on PCB. |
| 9 | OUTC | Amplifier C output - third independent rail-to-rail output; matches OUTA/OUTB specs. |
| 10 | INC− | Inverting input of Amp C - high-impedance node; layout symmetry recommended vs. other inputs. |
| 11 | INC+ | Noninverting input of Amp C - supports multi-channel sensor array interfaces. |
| 12 | VDD | Positive supply - requires local 0.1µF ceramic bypass capacitor placed ≤2mm from pin. |
| 13 | OUTD | Amplifier D output - fourth fully independent output; enables 4× simultaneous analog signal paths. |
| 14 | IND− | Inverting input of Amp D - completes quad-channel set; no shared substrate or power routing required. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full supply utilization - e.g., 0–5V output with 5V supply - maximizing SNR in low-voltage ADC drivers. |
| Ground-sensing input range | Accepts inputs down to –0.2V, enabling direct interface with transducers referenced below ground without level-shifting. |
| Unity-gain stability | Guaranteed stable at AV = 1V/V without external compensation - simplifies design of voltage followers and active filters. |
| 400pF capacitive-load tolerance | Drives ADC input capacitors and long traces directly - avoids stability-compromising isolation resistors in most layouts. |
| Low input bias current (1pA typ) | Minimizes voltage error across high-impedance sources like piezoelectric sensors or pH electrodes. |
| 116dB large-signal voltage gain | Ensures <0.0005% gain error at 1000V/V closed-loop - critical for precision instrumentation amplifiers and reference buffers. |
Applications
| ADC Buffering | Portable Medical Sensors |
|---|---|
Use Scenario: Driving the input of a 16-bit SAR ADC (e.g., MAX195) in a handheld ECG monitor with 3.3V supply. IC Role / Device Role / Timing Role: Precision voltage follower providing low-output-impedance, rail-to-rail buffered signal to ADC sample-and-hold circuitry. Use Value: 7.9nV/√Hz input noise and 0.0004% THD+N preserve ENOB >14 bits; 400µA per channel extends battery life beyond 100 hours. | Use Scenario: Signal conditioning for a wearable pulse oximeter using photodiode current-to-voltage conversion. IC Role / Device Role / Timing Role: Transimpedance amplifier with grounded cathode photodiode, operating from coin-cell 3V supply. Use Value: 1pA input bias current prevents dark-current error; rail-to-rail output swings 0–3V to match ADC input range without level shifters. |
| Digital Scale Strain Gauge Interface | Wireless Sensor Node Front-End |
Use Scenario: Amplifying mV-level Wheatstone bridge output in a battery-powered digital kitchen scale. IC Role / Device Role / Timing Role: Instrumentation-grade differential amplifier (with external resistors) converting bridge imbalance to 0–2.5V output. Use Value: 70µV max VOS and 0.3µV/°C tempco ensure <0.01% linearity drift over –10°C to +50°C operating range. | Use Scenario: Low-power analog front-end for an NB-IoT environmental sensor node measuring temperature/humidity. IC Role / Device Role / Timing Role: Quad-channel signal conditioner handling thermistor, humidity sensor, battery voltage monitor, and reference buffer simultaneously. Use Value: Total quiescent current <1.6mA enables >2-year operation on 2000mAh Li-SOCl₂ cell; SO package supports automated optical inspection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel, rail-to-rail, low-noise op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP484ESZ-REEL7 | Higher supply current (750µA/ch), wider supply range (±1.5V to ±18V), no rail-to-rail input - only output is RRO. | Requires dual supply or level-shifting for single-supply ground-sensing use; better suited for industrial ±15V systems. | Select when higher output drive (>20mA) or wider supply range is needed; avoid if ground-referenced inputs or ultra-low power are mandatory. |
| TLV9064IPWR | Lower noise (5.5nV/√Hz), lower THD+N (0.0002%), but only 1MHz GBW and 2.5V min supply - not unity-gain stable above 100kHz. | Superior noise performance for audio-grade apps, but insufficient bandwidth for fast-settling ADC drivers requiring >200kHz small-signal BW. | Prefer for low-frequency, ultra-low-noise apps (e.g., EEG front-end); avoid for >100kHz sampling or unity-gain follower stability-critical designs. |
Compared with OP484ESZ-REEL7 and TLV9064IPWR, the MAX4254ESD+ uniquely balances 3MHz unity-gain bandwidth, true ground-sensing input, 400µA/ch quiescent current, and guaranteed rail-to-rail output - making it optimal for portable, precision, single-supply systems where all three attributes are simultaneously required.
Availability
MAX4254ESD+ is available at Aetrix Electronics and suitable for portable medical devices, battery-powered instrumentation, precision ADC front-ends, and wireless sensor nodes requiring stable component supply and long-term manufacturability.
Supply support for MAX4254ESD+ 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX4249–MAX4257 product line was designed specifically for ultra-low-noise, low-distortion, rail-to-rail signal conditioning in space-constrained, battery-operated instrumentation - emphasizing DC precision, AC fidelity, and single-supply simplicity.
FAQ
What is the maximum capacitive load the MAX4254ESD+ can drive without oscillation?
The MAX4254ESD+ is specified to remain stable driving capacitive loads up to 400pF with no external compensation. This capability eliminates the need for isolation resistors in typical PCB layouts involving ADC input capacitance or short interconnects. For loads exceeding 400pF, a series isolation resistor (e.g., 150Ω for 1000pF) is recommended to maintain phase margin above 74° and prevent peaking.
Does the MAX4254ESD+ include a shutdown feature?
No, the MAX4254ESD+ does not include a shutdown function. Unlike MAX4251/MAX4253/MAX4256 variants, this part lacks SHDN pins and draws 400µA per amplifier continuously in normal operation. Shutdown capability is absent by design - confirmed by pin configuration tables showing "N.C." at pin 8 and no SHDN terminal mapping for the 14-pin SO package variant.
What is the input common-mode voltage range for the MAX4254ESD+?
The MAX4254ESD+ guarantees an input common-mode voltage range from –0.2V to VDD–1.1V across the full temperature range (–40°C to +85°C). This ground-sensing capability allows direct interfacing with transducers whose outputs swing below ground or reference to system ground, eliminating the need for level-shifting circuitry in single-supply applications.
Can the MAX4254ESD+ operate from a 2.4V supply?
Yes, the MAX4254ESD+ is fully specified for operation from 2.4V to 5.5V single supply. At 2.4V, it maintains rail-to-rail output swing (within 25mV of rails with 10kΩ load), 400µA quiescent current per amplifier, and 3MHz gain-bandwidth - enabling high-fidelity signal conditioning in ultra-low-voltage portable systems such as hearing aids or disposable medical sensors.
Is the MAX4254ESD+ pin-compatible with other quad op amps in the MAX42xx family?
No, the MAX4254ESD+ is not pin-compatible with other quad variants like MAX4253ESD+ or MAX4249. While all use 14-pin SO packages, MAX4254ESD+ has no shutdown pins and assigns pins 8 and 14 as N.C. and IND− respectively, whereas MAX4253ESD+ uses pin 8 for SHDNB and pin 14 for N.C. Direct substitution would cause functional failure due to missing shutdown control and altered pin mapping.
MAX4254ESD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Push-Pull, Rail-to-Rail
- Slew Rate:
- 0.3V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 70 µV
- Current - Supply:
- 420µA (x4 Channels)
- Current - Output / Channel:
- 68 mA
- Voltage - Supply Span (Min):
- 2.4 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MAX4254ESD+ FAQ
1.How can I place an order for MAX4254ESD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4254ESD+ 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 MAX4254ESD+ reliable?
The price and inventory of MAX4254ESD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4254ESD+ is usually 5 days.
3.What payment methods are accepted for MAX4254ESD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4254ESD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4254ESD+?
MAX4254ESD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4254ESD+ 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 MAX4254ESD+?
For technical support, including MAX4254ESD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4254ESD+ requirements.
6.How does Aetrix verify that MAX4254ESD+ is sourced from the original manufacturer or authorized distributors?
All MAX4254ESD+ 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 MAX4254ESD+ meets industry standards.
7.What is the process for return or replacement of MAX4254ESD+?
All MAX4254ESD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4254ESD+, 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 MAX4254ESD+ part is unused and in its original packaging.
Return procedure for MAX4254ESD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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