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Analog Devices Inc./Maxim Integrated MAX4275BJESA
- Part No.:
- MAX4275BJESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4275BJESA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,576
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Product details
Overview
MAX4275BJESA from Maxim Integrated is a single-channel, rail-to-rail output, fixed-gain operational amplifier with internal VCC/2 biasing at the noninverting input, designed for single-supply signal conditioning. It delivers +5V/V noninverting gain with 0.1% accuracy, operates from +2.5V to +5.5V, consumes only 355µA (typ), and withstands ±17V input faults-enabling robust low-side current-sense and photodiode preamplifier applications.
For engineers reviewing the MAX4275BJESA datasheet, MAX4275BJESA pinout, MAX4275BJESA application, or MAX4275BJESA equivalent, key selection criteria include its factory-trimmed gain accuracy, integrated mid-supply bias eliminating external resistors, fault-protected inputs, rail-to-rail output swing into 1kΩ, and stability with up to 470pF capacitive loads without isolation components.
Technical Context
The MAX4275BJESA integrates a precision rail-to-rail op amp core with laser-trimmed on-chip feedback resistors (RF/RG) and dual 150kΩ internal bias resistors forming a VCC/2 divider at IN+. Its compensation is optimized for +5V/V gain, delivering 330kHz −3dB bandwidth and 23MHz GBW product while maintaining stability with 470pF loads.
This device belongs to the GainAmp™ family's "fixed-gain + internal VCC/2 bias" variant (MAX4175/MAX4275 series). Unlike open-loop counterparts (e.g., MAX4281), it is not unity-gain stable; unlike MAX4174/MAX4274, it eliminates external bias networks for AC-coupled single-supply designs via the dedicated IN+ bias structure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Configuration | +5V/V noninverting, factory-trimmed RF/RG ratio ensures 0.1% DC gain accuracy-replaces discrete op amp + resistor network with guaranteed performance. |
| Supply Voltage Range | +2.5V to +5.5V single supply-supports battery-powered portable instruments and 3.3V/5V industrial systems without level-shifting. |
| Supply Current | 355µA typical at VCC = 5V-enables ultra-low-power operation in smart-card readers and remote controls. |
| Input Fault Protection | ±17V tolerance at IN+ and IN−-prevents phase reversal or latch-up when sensing beyond rails in current-sense or sensor interfaces. |
| Capacitive Load Stability | Stable with ≤470pF load-drives ADC input filters or long traces directly without series isolation resistor, simplifying layout. |
| Output Voltage Swing | Rail-to-rail into 1kΩ (VOL ≤ 2mV, VOH ≥ VCC − 2mV)-maximizes dynamic range for 10-bit+ data acquisition in single-supply systems. |
| −3dB Bandwidth | 330kHz at +5V/V gain-provides sufficient settling for 10ksps sampling of conditioned sensor signals. |
Pinout & Package
SOT23-5 package: compact 2.9mm × 1.6mm surface-mount footprint with exposed pad for thermal performance; compatible with standard pick-and-place and reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting input terminal | Connected internally to precision RG resistor; accepts differential or inverting signal inputs; voltage must remain within supply rails to avoid distortion. |
| 2 (OUT) | Amplifier output | Rail-to-rail output capable of sourcing/sinking >65mA short-circuit current; drives 1kΩ loads with <2mV headroom to rails. |
| 3 (VCC) | Positive supply | Accepts +2.5V to +5.5V; requires 0.1µF bypass capacitor to ground near pin for noise suppression and stability. |
| 4 (VEE) | Negative supply / ground | Reference node for single-supply operation; tied to system ground; forms return path for bias and output currents. |
| 5 (IN+) | Noninverting input with internal VCC/2 bias | Internally biased to VCC/2 via dual 150kΩ resistors-eliminates external bias network for AC-coupled inputs in single-supply configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated VCC/2 bias network | Dual 150kΩ resistors eliminate external bias components, reducing BOM count and PCB area for single-supply AC-coupled amplifiers. |
| 0.1% gain accuracy | Laser-trimmed RF/RG resistors ensure production-grade gain matching-removes need for post-assembly calibration in precision gain stages. |
| ±17V input fault tolerance | Back-to-back SCR + diode clamp structure limits input fault current to <3.5mA-protects both MAX4275BJESA and upstream sensors or transducers. |
| Rail-to-rail output stage | Delivers full-scale output swing into 1kΩ load-preserves signal fidelity and maximizes SNR in low-voltage data acquisition chains. |
| 470pF capacitive load stability | No external isolation resistor required-simplifies filter design and improves transient response in ADC driver and sensor interface applications. |
Applications
| Portable Instruments | Smart-Card Readers |
|---|---|
|
Use Scenario: Signal conditioning of thermistor or RTD bridge outputs in handheld multimeters and environmental sensors. IC Role / Device Role / Timing Role: Noninverting fixed-gain amplifier with VCC/2 bias enabling rail-to-rail output swing from 3.3V supply. Use Value: Eliminates external bias resistors and reduces component count by 3–4 parts per channel while maintaining 0.1% gain accuracy across temperature. |
Use Scenario: Amplifying weak analog signals from ISO 7816 contact interfaces during card authentication. IC Role / Device Role / Timing Role: Low-noise, fast-settling (+5V/V) preamplifier with ±17V fault protection against ESD events on card insertion. Use Value: Withstands contact bounce and electrostatic discharge without latch-up, ensuring reliable communication handshake in <1ms. |
| Low-Side Current-Sense | Photodiode Preamps |
|
Use Scenario: Amplifying mV-level shunt voltage in battery management systems monitoring charge/discharge currents. IC Role / Device Role / Timing Role: Precision noninverting amplifier with rail-to-rail output driving 12-bit SAR ADC reference range. Use Value: 355µA quiescent current extends battery life; 330kHz bandwidth supports real-time current profiling at 10ksps sampling rates. |
Use Scenario: Transimpedance amplification of nanoamp-level photocurrents in infrared remote control receivers. IC Role / Device Role / Timing Role: Fixed-gain transimpedance stage using IN− as summing node and IN+ biased to VCC/2 for DC offset control. Use Value: Internal bias removes need for external DC servo loop, reducing component count and improving long-term drift stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4175BEUK-T | SOT23-5, same +5V/V gain, identical VCC/2 bias architecture, but rated for −40°C to +85°C (vs. MAX4275BJESA's −40°C to +125°C industrial grade). | Not qualified for extended-temperature automotive or industrial control environments requiring >85°C operation. | Select MAX4275BJESA for high-reliability applications above 85°C; choose MAX4175BEUK-T where cost sensitivity outweighs temperature margin. |
| AD8236ARMZ | Single-supply, rail-to-rail instrumentation amplifier (not fixed-gain op amp); offers adjustable gain via external resistor; higher input bias current (100pA vs. ±0.05nA) and larger 8-lead MSOP package. | Requires external gain-setting resistor and additional filtering components; suited for high-precision differential sensing, not simple single-ended gain blocks. | Choose AD8236ARMZ only when differential input rejection or programmable gain is mandatory; MAX4275BJESA provides lower cost, smaller size, and simpler integration for single-ended +5V/V needs. |
Compared with MAX4175BEUK-T, MAX4275BJESA extends operating temperature to +125°C and improves thermal reliability for industrial motor drives; versus AD8236ARMZ, it delivers lower component count, smaller footprint, and guaranteed 0.1% gain without external tuning-ideal for high-volume, space-constrained signal conditioning.
Availability
MAX4275BJESA is available at Aetrix Electronics and suitable for portable instruments, smart-card readers, low-side current-sense circuits, and photodiode preamplifiers requiring stable component supply, guaranteed gain accuracy, and extended-temperature operation.
Supply support for MAX4275BJESA 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 industrial, communications, and consumer applications.
The MAX4275BJESA belongs to the GainAmp™ fixed-gain amplifier product line, engineered to replace op-amp-plus-resistor circuits with factory-trimmed, space-saving solutions for single-supply signal conditioning in portable and embedded systems.
FAQ
What is the operating temperature range of the MAX4275BJESA?
The MAX4275BJESA is specified for operation from −40°C to +125°C, making it suitable for industrial control, automotive under-hood, and high-reliability embedded applications where extended thermal margins are required. This exceeds the −40°C to +85°C range of the pin-compatible MAX4175BEUK-T variant.
Does the MAX4275BJESA require external biasing resistors for single-supply operation?
No. The MAX4275BJESA integrates dual 150kΩ resistors that form an internal VCC/2 bias network at the IN+ pin, eliminating the need for external resistors in AC-coupled single-supply configurations. This reduces component count, PCB area, and potential drift from external resistor tolerances.
Can the MAX4275BJESA drive a 1000pF capacitive load without oscillation?
No. The MAX4275BJESA is stable with up to 470pF capacitive loads without external compensation. Driving 1000pF requires adding a 100Ω isolation resistor in series with the output, as confirmed in Maxim's application notes (e.g., Figure 10 of the MAX4174/MAX4274 datasheet), to maintain phase margin and prevent ringing.
What is the gain accuracy specification for the MAX4275BJESA over temperature?
The MAX4275BJESA guarantees 0.1% gain accuracy at +25°C, with typical drift of ±50ppm/°C over the full −40°C to +125°C range. This results in <±0.25% total gain error across temperature-sufficient for 12-bit system accuracy without calibration.
How does the ±17V input fault protection work in the MAX4275BJESA?
The MAX4275BJESA employs back-to-back SCR structures plus diode clamps at both IN+ and IN− pins. When either input exceeds ±17V relative to VEE, the SCRs conduct, limiting fault current to <3.5mA while preventing phase reversal or latch-up-protecting both the MAX4275BJESA and upstream signal sources.
MAX4275BJESA 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:
- 355µA (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
MAX4275BJESA FAQ
1.How can I place an order for MAX4275BJESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4275BJESA 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 MAX4275BJESA reliable?
The price and inventory of MAX4275BJESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4275BJESA is usually 5 days.
3.What payment methods are accepted for MAX4275BJESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4275BJESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4275BJESA?
MAX4275BJESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4275BJESA 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 MAX4275BJESA?
For technical support, including MAX4275BJESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4275BJESA requirements.
6.How does Aetrix verify that MAX4275BJESA is sourced from the original manufacturer or authorized distributors?
All MAX4275BJESA 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 MAX4275BJESA meets industry standards.
7.What is the process for return or replacement of MAX4275BJESA?
All MAX4275BJESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4275BJESA, 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 MAX4275BJESA part is unused and in its original packaging.
Return procedure for MAX4275BJESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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