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Analog Devices Inc./Maxim Integrated MAX4175BKEUK-T
- Part No.:
- MAX4175BKEUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4175BKEUK-T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX4175BKEUK-T from Maxim Integrated is a single-channel, noninverting fixed-gain amplifier with internal VCC/2 biasing, housed in a 5-pin SOT23 package. It delivers +5V/V gain with 0.1% accuracy, operates from +2.5V to +5.5V supply, consumes only 300µA, and features rail-to-rail output swing driving 1kΩ loads - ideal for low-power single-supply signal conditioning in portable instrumentation and smart-card readers.
For engineers reviewing the MAX4175BKEUK-T datasheet, MAX4175BKEUK-T pinout, MAX4175BKEUK-T application, or MAX4175BKEUK-T equivalent, key selection criteria include its factory-trimmed gain accuracy, ±17V input fault protection, 23MHz GBW product at high gains, capacitive-load stability up to 470pF, and integrated VCC/2 bias eliminating external resistors in AC-coupled front-ends.
Technical Context
The MAX4175BKEUK-T integrates a rail-to-rail op-amp core with laser-trimmed internal feedback resistors (RF/RG) and dual 150kΩ resistors forming a VCC/2 bias network at the noninverting input. Its compensation is optimized for +5V/V gain, achieving 330kHz −3dB bandwidth and 23MHz GBW product.
Input protection includes back-to-back SCR structures enabling ±17V fault tolerance without phase reversal, while diode clamping and series resistance limit input current to <3.5mA. The inverting input accepts signals within the supply rails; the noninverting input is biased to VCC/2 ±0.25V and supports common-mode range from VEE to VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | +5V/V noninverting, factory-trimmed for 0.1% accuracy - eliminates external resistor matching and layout sensitivity |
| Supply Voltage | +2.5V to +5.5V single supply - enables direct use in 3.3V and 5V systems without level-shifting |
| Supply Current | 300µA typical - supports battery-powered operation with minimal quiescent power impact |
| −3dB Bandwidth | 330kHz at +5V/V gain - sufficient for DC-coupled sensor amplification and medium-speed signal chains |
| Input Fault Protection | ±17V on either input - prevents latch-up or damage during transient overvoltage events in industrial interfaces |
| Capacitive Load Stability | Stable up to 470pF without isolation resistor - simplifies driving ADC input filters or long PCB traces |
| Output Swing | Rail-to-rail into 1kΩ load - maximizes dynamic range in single-supply systems with limited headroom |
Pinout & Package
Package: 5-pin SOT23 - compact footprint (2.9mm × 1.6mm × 1.1mm), surface-mount, JEDEC MO-178 compatible, suitable for high-density portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting input | Connected internally to RG; must remain within VEE to VCC to avoid distortion; fault-protected to ±17V |
| 2 (OUT) | Amplifier output | Rail-to-rail voltage source capable of sourcing/sinking >65mA short-circuit current; stable with ≤470pF load |
| 3 (VCC) | Positive supply | Accepts +2.5V to +5.5V; requires 0.1µF bypass capacitor to ground near pin for noise suppression |
| 4 (VEE) | Negative supply / ground | Typically connected to system ground in single-supply operation; forms reference for internal VCC/2 bias |
| 5 (IN+) | Noninverting input | Internally biased to VCC/2 via dual 150kΩ resistors; supports AC-coupled inputs without external bias network |
Key Features
| Feature | Design Value |
|---|---|
| Integrated VCC/2 bias network | Eliminates two external resistors and associated layout area in single-supply AC-coupled amplifiers |
| 0.1% gain accuracy | Reduces calibration overhead in precision measurement systems; avoids post-assembly trimming |
| Rail-to-rail output stage | Delivers full-scale output swing into 1kΩ load - preserves SNR in low-voltage data acquisition paths |
| ±17V input fault tolerance | Enables robust interfacing with noisy industrial sensors or hot-plug connectors without external protection |
| 470pF capacitive-load stability | Permits direct connection to anti-aliasing filters or long cables without adding isolation resistors or degrading settling |
Applications
| Portable Instrumentation | Smart-Card Readers |
|---|---|
Use Scenario: Amplifying low-level analog sensor outputs (e.g., thermistor, photodiode) in handheld multimeters or environmental monitors. IC Role / Device Role / Timing Role: Noninverting fixed-gain amplifier with internal VCC/2 bias providing DC-coupled signal conditioning and rail-to-rail output swing. Use Value: Eliminates external bias components and reduces board area by >30% versus discrete op-amp + resistor solution while maintaining 0.1% gain accuracy. |
Use Scenario: Conditioning analog signals from contactless RFID coil receivers in payment terminals or access control devices. IC Role / Device Role / Timing Role: Low-noise, fast-settling (+5V/V) amplifier driving ADC inputs with minimal group delay variation across temperature. Use Value: 330kHz bandwidth and 7µs 0.01% settling time ensure accurate sampling of burst-mode RF envelope signals without aliasing. |
| Low-Side Current-Sense | Photodiode Preamps |
Use Scenario: Amplifying mV-level shunt voltage in battery management ICs or motor drivers operating from 3.3V supplies. IC Role / Device Role / Timing Role: Fixed-gain noninverting amplifier with ±17V input fault protection tolerating load dump transients on sense lines. Use Value: Input fault resilience prevents latch-up during inductive kickback, avoiding system resets or sensor damage in automotive-grade designs. |
Use Scenario: Transimpedance preamplification of photodiode current in infrared remote receivers or optical encoders. IC Role / Device Role / Timing Role: Low-input-bias-current (+5V/V) amplifier with 90nV/√Hz input noise density optimizing SNR for weak optical signals. Use Value: 300µA supply current and rail-to-rail output enable high-gain amplification in space-constrained IR receiver modules powered by coin cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4174BKEUK-T | Same package and pinout, but lacks internal VCC/2 bias; requires external bias network for single-supply AC coupling. | Suitable for DC-coupled configurations where IN+ reference is externally controlled. | Select when precise external biasing or dual-supply operation is required; not drop-in for MAX4175BKEUK-T's AC-coupled use cases. |
| AD8275ARMZ | Fixed +20V/V gain, 5V supply only, no internal VCC/2 bias, higher 1.2mA supply current, wider −3dB bandwidth (1.5MHz). | Better suited for high-speed, high-gain applications like isolated voltage sensing where speed outweighs power constraints. | Choose for higher bandwidth needs; avoid when low quiescent current (<300µA) or integrated bias is mandatory. |
Compared with MAX4174BKEUK-T and AD8275ARMZ, the MAX4175BKEUK-T uniquely combines ultra-low power (300µA), integrated VCC/2 bias, and ±17V fault protection in a 5-pin SOT23 - making it optimal for space- and energy-constrained single-supply signal chains where external biasing adds cost and error sources.
Availability
MAX4175BKEUK-T is available at Aetrix Electronics and suitable for portable instrumentation, smart-card readers, and low-side current-sense applications requiring stable component supply, guaranteed 0.1% gain accuracy, and long-term lifecycle support.
Supply support for MAX4175BKEUK-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 and mixed-signal ICs for demanding industrial, medical, and communications applications.
The MAX4175BKEUK-T belongs to the GainAmp™ family of fixed-gain amplifiers, engineered to replace op-amp-plus-resistor circuits with factory-trimmed accuracy, reduced board area, and simplified single-supply biasing.
FAQ
What is the exact gain value and accuracy of the MAX4175BKEUK-T?
The MAX4175BKEUK-T provides a noninverting fixed gain of +5V/V with 0.1% typical accuracy over temperature and supply voltage variations. This specification is achieved through factory laser trimming of internal RF/RG resistors and is guaranteed per the datasheet's DC gain accuracy test condition at VCC = 5V and TA = +25°C. The MAX4175BKEUK-T maintains this accuracy across its full operating temperature range of −40°C to +85°C.
Does the MAX4175BKEUK-T require external biasing components for single-supply operation?
No, the MAX4175BKEUK-T does not require external biasing components for single-supply AC-coupled operation. It integrates two 150kΩ resistors that form an internal VCC/2 bias network at the IN+ pin, establishing a precise mid-supply reference. This eliminates the need for external resistive dividers and decoupling capacitors typically used in discrete solutions, reducing component count and layout complexity.
What is the maximum capacitive load the MAX4175BKEUK-T can drive without oscillation?
The MAX4175BKEUK-T is stable driving capacitive loads up to 470pF without requiring an external isolation resistor. This capability is verified under standard test conditions (VCC = 5V, RL = 100kΩ, TA = +25°C) and confirmed by small-signal pulse response measurements shown in the datasheet (Figures 11 and 12). Loads exceeding 470pF may require series output resistance to maintain phase margin.
How does the input fault protection of the MAX4175BKEUK-T work?
The MAX4175BKEUK-T incorporates back-to-back SCR structures at both IN+ and IN− pins, enabling safe operation with input voltages up to ±17V relative to VEE. Diode clamping and series resistance (5kΩ at IN+, RG at IN−) limit fault current to less than 3.5mA, preventing latch-up or permanent damage. This protection remains active without affecting normal operation when inputs stay within the specified common-mode range.
Can the MAX4175BKEUK-T be used in dual-supply configurations?
Yes, the MAX4175BKEUK-T supports dual-supply operation from ±1.25V to ±2.75V. In such configurations, VEE is connected to the negative rail and VCC to the positive rail. The internal VCC/2 bias then references the midpoint between rails, preserving proper DC operating point. However, for true ground-referenced DC-coupled applications, the MAX4174BKEUK-T (no internal bias) is recommended to avoid unintended offset.
MAX4175BKEUK-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.7V/µs
- Gain Bandwidth Product:
- 2 MHz
- -3db Bandwidth:
- 330 kHz
- Current - Input Bias:
- 50 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 355µA
- 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:
- SOT-23-5
MAX4175BKEUK-T FAQ
1.How can I place an order for MAX4175BKEUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4175BKEUK-T 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 MAX4175BKEUK-T reliable?
The price and inventory of MAX4175BKEUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4175BKEUK-T is usually 5 days.
3.What payment methods are accepted for MAX4175BKEUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4175BKEUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4175BKEUK-T?
MAX4175BKEUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4175BKEUK-T 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 MAX4175BKEUK-T?
For technical support, including MAX4175BKEUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4175BKEUK-T requirements.
6.How does Aetrix verify that MAX4175BKEUK-T is sourced from the original manufacturer or authorized distributors?
All MAX4175BKEUK-T 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 MAX4175BKEUK-T meets industry standards.
7.What is the process for return or replacement of MAX4175BKEUK-T?
All MAX4175BKEUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4175BKEUK-T, 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 MAX4175BKEUK-T part is unused and in its original packaging.
Return procedure for MAX4175BKEUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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