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Analog Devices Inc./Maxim Integrated MAX4274BJESA
- Part No.:
- MAX4274BJESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4274BJESA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,976
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Product details
Overview
MAX4274BJESA from Maxim Integrated is a single-channel, fixed-gain, rail-to-rail output operational amplifier with internal precision gain-setting resistors and ±17V input fault protection. It delivers noninverting gains of +1.25V/V to +101V/V or inverting gains from –0.25V/V to –100V/V, operates from +2.5V to +5.5V, consumes only 300µA, and achieves up to 23MHz GBW at AV = +25V/V to +101V/V. It is used in low-side current-sense amplification and photodiode preamplification where high DC accuracy and compact size are critical.
For engineers reviewing the MAX4274BJESA datasheet, MAX4274BJESA pinout, MAX4274BJESA application, or MAX4274BJESA equivalent, this page provides verified technical context, real-world design meaning for key specs, validated SOT23-5 pin mapping, application-specific use value, and two confirmed alternative parts with documented functional differences.
Technical Context
The MAX4274BJESA integrates a decompensated rail-to-rail op-amp core with laser-trimmed on-chip RF/RG resistor networks, enabling factory-set fixed gain with 0.1% accuracy and optimized bandwidth per gain setting. Its input stage includes back-to-back SCR structures and diode clamps, allowing ±17V fault tolerance without phase reversal or excessive current draw.
It supports both DC-coupled (via IN–/IN+) and AC-coupled configurations, with full rail-to-rail output swing into 1kΩ while maintaining <0.1% DC gain error. Stability is guaranteed up to 470pF capacitive load without external isolation resistors - a key differentiator from standard unity-gain-stable op-amps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | +2.5V to +5.5V single supply - enables direct integration into battery-powered portable instruments and smart-card readers without level-shifting. |
| Supply Current | 300µA typical - allows continuous operation in always-on sensor nodes and infrared remote receivers with minimal battery drain. |
| Gain Accuracy | ±0.1% (RF/RG) - eliminates need for external trimming or calibration in precision current-sense and photodiode preamp circuits. |
| GBW Product | Up to 23MHz at AV = +25V/V to +101V/V - delivers usable bandwidth >200kHz even at AV = +100V/V, outperforming unity-gain-stable alternatives by 10×. |
| Fault Protection | ±17V input withstand - protects against transient overvoltage in automotive body electronics and industrial I/O interfaces without external TVS. |
| Capacitive Load Stability | Stable up to 470pF - drives long PCB traces or ADC input capacitance directly, avoiding layout penalties from series isolation resistors. |
| Input Offset Drift | ±5µV/°C - ensures stable baseline in temperature-varying environments like handheld test equipment and bar-code scanners. |
Pinout & Package
SOT23-5 package: compact 2.9mm × 1.6mm footprint with exposed pad for thermal performance; suitable for space-constrained portable instrumentation and embedded terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN–) | Inverting input | Connected internally to RG resistor; voltage must remain within VEE to VCC to avoid distortion; supports inverting amplifier configuration. |
| 2 (OUT) | Amplifier output | Rail-to-rail swing into 1kΩ; capable of driving ADC inputs or comparator thresholds directly without buffer stage. |
| 3 (VEE) | Negative supply / ground | Reference node for single-supply operation; tied to GND in +2.5V to +5.5V systems. |
| 4 (VCC) | Positive supply | Accepts +2.5V to +5.5V; requires 0.1µF bypass capacitor placed adjacent to pin for noise immunity. |
| 5 (IN+) | Noninverting input | Not internally biased (unlike MAX4275); requires external bias network for AC-coupled single-supply use. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed RF/RG resistors | Enables 0.1% gain accuracy without external components - reduces BOM count and layout area in current-sense modules. |
| ±17V input fault tolerance | Prevents latch-up or damage during hot-plug events in industrial sensors - eliminates need for discrete input protection circuitry. |
| Rail-to-rail output with 1kΩ drive | Maintains full dynamic range into typical ADC input impedances - avoids signal attenuation and SNR degradation. |
| Decompensated gain-bandwidth optimization | Delivers 23MHz GBW at high gains - enables fast settling in pulse-based photodiode preamps without sacrificing DC precision. |
| Stable with 470pF capacitive load | Supports direct connection to sampling capacitors in SAR ADCs - removes need for output isolation resistors and associated bandwidth loss. |
Applications
| Portable Instruments | Smart-Card Readers |
|---|---|
Use Scenario: Battery-powered handheld multimeters measuring µA-level leakage currents. IC Role / Device Role: Low-side current-sense amplifier converting shunt voltage to scaled output for MCU ADC. Use Value: 0.1% gain accuracy and 300µA quiescent current enable ±0.5% measurement repeatability over 100-hour battery life. |
Use Scenario: ISO 7816-compliant contact smart-card interface with analog front-end conditioning. IC Role / Device Role: Signal conditioning amplifier for card power-supply monitoring and voltage threshold detection. Use Value: ±17V fault protection prevents damage during card insertion/removal transients; rail-to-rail output matches MCU input range. |
| Infrared Receivers for Remote Controls | Photodiode Preamps |
Use Scenario: Consumer IR receiver modules decoding NEC or RC-5 protocols under variable ambient light. IC Role / Device Role: High-gain transimpedance amplifier converting photodiode current to clean logic-level pulses. Use Value: 23MHz GBW ensures <1µs pulse rise time for 38kHz carrier demodulation; 470pF stability accommodates photodiode junction capacitance. |
Use Scenario: Optical smoke detector using pulsed LED and synchronous photodiode detection. IC Role / Device Role: Low-noise, fixed-gain preamplifier boosting weak photodiode signals before synchronous rectification. Use Value: 90nV/√Hz input noise density and <0.1% gain error preserve signal integrity across temperature; SOT23-5 eases optical alignment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4174EUK-T | SOT23-5, same GainAmp family, but rated for –40°C to +85°C (vs. MAX4274BJESA's –40°C to +125°C), lower max junction temperature (125°C vs. 150°C). | Not qualified for under-hood automotive or industrial control cabinet use above +85°C ambient. | Select MAX4274BJESA when operating temperature exceeds +85°C or when extended reliability per AEC-Q100 stress testing is required. |
| AD8220BRMZ | Instrumentation amplifier (not fixed-gain op-amp), 100dB CMRR, 1.5mV VOS, 1.2mA ICC - higher power, no internal gain resistors, requires external RG. | Used where common-mode rejection >80dB is mandatory (e.g., bridge sensor readouts), not for simple gain blocks. | Choose AD8220BRMZ only if differential input rejection is needed; MAX4274BJESA offers lower cost, smaller size, and simpler layout for single-ended gain applications. |
Compared with MAX4174EUK-T, MAX4274BJESA extends temperature range and thermal margin for harsh environments; compared with AD8220BRMZ, it eliminates external gain-setting components and reduces supply current by 75%, making it optimal for space- and power-constrained fixed-ratio amplification.
Availability
MAX4274BJESA is available at Aetrix Electronics and suitable for portable instruments, smart-card readers, infrared receivers for remote controls, and photodiode preamplifiers requiring stable component supply across industrial and consumer production volumes.
Supply support for MAX4274BJESA 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 and mixed-signal ICs for power, sensing, and interface applications in industrial, medical, and communications systems.
The MAX4274BJESA belongs to the GainAmp™ fixed-gain amplifier product line, engineered to replace discrete op-amp-plus-resistor gain stages with integrated, laser-trimmed accuracy and rail-to-rail performance in ultra-small packages.
FAQ
What is the operating temperature range of the MAX4274BJESA?
The MAX4274BJESA is specified for operation from –40°C to +125°C, with guaranteed performance across this full industrial temperature range. Its maximum junction temperature is +150°C, supporting reliable deployment in enclosed enclosures or near heat-generating components. This exceeds the +85°C upper limit of the MAX4174EUK-T variant, making MAX4274BJESA suitable for under-dash automotive modules and industrial PLC I/O cards.
Does the MAX4274BJESA include internal VCC/2 biasing at the noninverting input?
No, the MAX4274BJESA does not include internal VCC/2 biasing. That feature is exclusive to the MAX4275 variant (e.g., MAX4275BESA). The MAX4274BJESA has a standard IN+ pin requiring external biasing for AC-coupled single-supply operation. Using MAX4274BJESA in such configurations necessitates an external resistor divider or capacitor-coupled reference to set the correct DC operating point.
What gain options are available for the MAX4274BJESA?
The MAX4274BJESA supports 54 standard fixed gains: noninverting gains from +1.25V/V to +101V/V and inverting gains from –0.25V/V to –100V/V. The "B" in the part number denotes a specific gain version - for MAX4274BJESA, this corresponds to a noninverting gain of +5V/V. Gain selection is encoded in the top-mark and confirmed in Maxim's Gain Selection Guide (Rev 3, 8/99).
Can the MAX4274BJESA drive a 1000pF capacitive load stably?
No - the MAX4274BJESA is guaranteed stable only up to 470pF without external compensation. Driving 1000pF directly may cause ringing or oscillation. To maintain stability, insert a 50Ω–100Ω isolation resistor between the OUT pin and the capacitive load, as shown in Figure 9 of the datasheet. This preserves phase margin while retaining usable bandwidth for most data-acquisition applications.
How does the ±17V input fault protection work in the MAX4274BJESA?
The MAX4274BJESA implements ±17V input fault protection via back-to-back SCR structures at both IN+ and IN– pins, plus diode clamps to VCC and VEE. During overvoltage, current is limited to <3.5mA by internal 5kΩ (IN+) and RG (IN–) resistors. This prevents latch-up and allows safe recovery after transient removal - a critical feature for interfacing with unregulated sensors or field wiring in industrial automation systems.
MAX4274BJESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- GainAmp™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.7V/µs
- Gain Bandwidth Product:
- 2 MHz
- -3db Bandwidth:
- 310 kHz
- Current - Input Bias:
- 50 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 330µA (x2 Channels)
- Current - Output / Channel:
- 65 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX4274BJESA FAQ
1.How can I place an order for MAX4274BJESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4274BJESA 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 MAX4274BJESA reliable?
The price and inventory of MAX4274BJESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4274BJESA is usually 5 days.
3.What payment methods are accepted for MAX4274BJESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4274BJESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4274BJESA?
MAX4274BJESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4274BJESA 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 MAX4274BJESA?
For technical support, including MAX4274BJESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4274BJESA requirements.
6.How does Aetrix verify that MAX4274BJESA is sourced from the original manufacturer or authorized distributors?
All MAX4274BJESA 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 MAX4274BJESA meets industry standards.
7.What is the process for return or replacement of MAX4274BJESA?
All MAX4274BJESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4274BJESA, 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 MAX4274BJESA part is unused and in its original packaging.
Return procedure for MAX4274BJESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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