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Analog Devices Inc./Maxim Integrated MAX4453EKA
- Part No.:
- MAX4453EKA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8
- Datasheet:
-
MAX4453EKA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:11,825
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Product details
Overview
MAX4453EKA from Maxim Integrated is a dual, unity-gain stable, rail-to-rail output operational amplifier optimized for low-power, high-speed signal conditioning. It delivers 200MHz -3dB bandwidth, 95V/µs slew rate, and 20ns rise/fall times while consuming only 620µA per amplifier on a +2.7V to +5.25V single supply - enabling wideband analog front-ends in battery-powered cellular handsets and keyless entry receivers.
For engineers reviewing the MAX4453EKA datasheet, MAX4453EKA pinout, MAX4453EKA application, or MAX4453EKA equivalent, this page provides verified electrical specifications, SOT23-8 package terminal mapping, real-world use cases in baseband signal chains, and validated alternative op-amps with documented gain-bandwidth and quiescent current trade-offs.
Technical Context
The MAX4453EKA employs voltage-feedback architecture with internal compensation for stable unity-gain operation. Its bipolar process enables high slew rate (95V/µs) and low input bias current (0.8–3µA), while rail-to-rail output swing (within 180mV of rails at 1kΩ load) supports full dynamic range in single-supply systems.
It features ground-sensing inputs (common-mode range from VEE − 0.1V to VCC − 1.5V), 30MΩ input resistance, and 120kΩ differential input resistance - making it suitable for high-impedance sensor buffering and ADC driver applications where DC accuracy and AC fidelity must coexist.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 200MHz - supports RF IF sampling and wideband active filtering up to 15MHz without gain peaking. |
| Slew Rate | 95V/µs - enables clean 2Vpp output steps with ≤20ns rise/fall time, critical for fast-settling ADC buffers. |
| Supply Current | 620µA per amplifier - allows dual-channel operation under 1.25mA total, ideal for multi-stage portable signal chains. |
| Input Offset Voltage | 0.4–12mV - ensures <±10mV error in precision gain stages without external trimming. |
| Output Swing | Within 180mV of rails (VCC/VEE) at 1kΩ - maximizes usable signal headroom in 3.3V systems. |
| Input Noise Density | 15nV/√Hz at 10kHz - maintains SNR integrity in baseband amplification before ADC digitization. |
| Common-Mode Rejection | 60–100dB - suppresses supply ripple and shared-noise coupling in mixed-signal PCB layouts. |
Pinout & Package
MAX4453EKA is housed in an 8-pin SOT23 package (JEDEC MO-178 compliant), measuring 2.80mm × 2.90mm × 1.30mm with gull-wing leads. This ultra-small outline supports high-density portable PCB layouts while maintaining thermal performance up to +85°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Amplifier A output - rail-to-rail capable, drives 1kΩ loads with <180mV saturation margin. |
| 2 | INA− | Inverting input of Amplifier A - differential input resistance 120kΩ, common-mode range extends to VEE − 0.1V. |
| 3 | INA+ | Noninverting input of Amplifier A - high-impedance node (30MΩ), sensitive to layout parasitics above 100MHz. |
| 4 | VEE | Negative power supply - tied to ground in single-supply operation; must be bypassed with 0.1µF ceramic capacitor. |
| 5 | VCC | Positive power supply - accepts +2.7V to +5.25V; requires local 0.1µF bypass near pin. |
| 6 | INB− | Inverting input of Amplifier B - electrically isolated from INA−; crosstalk <−74dB at 1MHz. |
| 7 | INB+ | Noninverting input of Amplifier B - matched offset voltage ±1mV relative to INA+ for dual-channel tracking. |
| 8 | OUTB | Amplifier B output - identical AC/DC specs to OUTA; enables independent dual-path signal processing. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full 3.3Vpp output from 3.3V supply, eliminating level-shifting circuitry in portable designs. |
| Unity-gain stability | Operates stably at AV = +1 without external compensation, simplifying inverting/noninverting buffer design. |
| Low 620µA quiescent current | Enables always-on signal monitoring in keyless entry receivers with <2.5µA standby system impact per channel. |
| 200MHz bandwidth at 620µA | Achieves 323MHz/mA speed/power ratio - highest among dual op-amps in SOT23-8 footprint. |
| Ground-sensing input stage | Accepts input signals down to 0.1V above ground, supporting direct connection to single-ended sensors. |
Applications
| Cellular Baseband Amplifier | Keyless Entry Receiver Front-End |
|---|---|
Use Scenario: Amplifying I/Q baseband signals prior to 12-bit, 40MSPS ADC in GSM handset transceiver. IC Role / Device Role / Timing Role: Dual-channel buffer driving ADC sample-and-hold input with <1% gain error and <5ns group delay mismatch. Use Value: 200MHz bandwidth preserves 15MHz modulation envelope fidelity; rail-to-rail swing maximizes ADC utilization without clipping. | Use Scenario: Conditioning 315MHz OOK-demodulated pulses in automotive key fob receiver ASIC interface. IC Role / Device Role / Timing Role: High-speed comparator preamplifier with <20ns pulse response and <10mV input-referred noise floor. Use Value: 95V/µs slew rate resolves 100ns pulse edges; 620µA per channel enables continuous listening mode within 10µA system budget. |
| Battery-Powered Instrumentation Channel | Portable Medical Sensor Interface |
Use Scenario: Signal conditioning for piezoelectric vibration sensor in handheld predictive maintenance tool. IC Role / Device Role / Timing Role: Low-noise charge amplifier with 15nV/√Hz input noise and 30MΩ input impedance. Use Value: 120kΩ differential input resistance minimizes loading on high-Z sensor; 0.4mV typical VOS avoids calibration drift over temperature. | Use Scenario: ECG electrode amplifier stage in wearable patch monitor with 3.0V coin-cell supply. IC Role / Device Role / Timing Role: Dual instrumentation amplifier front-end providing 100dB CMRR and 200kHz signal bandwidth. Use Value: Input common-mode range to VEE − 0.1V allows direct connection to dry-electrode inputs; 620µA per amp extends battery life to >72 hours. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6612MMX/NOPB | Higher 1.6mA supply current, 720MHz GBW, but not unity-gain stable - requires minimum +5V/V gain. | Preferred for higher-gain active filters (>5V/V) where bandwidth >300MHz is required. | Select when system gain ≥5V/V and power budget allows >1.2× current draw per channel. |
| ADA4891-2ARZ | Lower 1.2mA supply current, 225MHz GBW, unity-gain stable, but rail-to-rail input not supported - input range limited to VEE + 0.1V. | Suitable for 3.3V systems with mid-supply referenced inputs, e.g., DAC output buffers. | Choose when input signals are centered at VCC/2 and rail-to-rail input is unnecessary. |
Compared with LMH6612MMX/NOPB and ADA4891-2ARZ, the MAX4453EKA uniquely balances 200MHz bandwidth, unity-gain stability, rail-to-rail output, and sub-1mA quiescent current in an 8-pin SOT23 - making it optimal for dual-channel, battery-constrained, wideband signal paths where input common-mode flexibility and minimal external components are mandatory.
Availability
MAX4453EKA is available at Aetrix Electronics and suitable for cellular telephony baseband circuits, keyless entry receiver front-ends, and portable instrumentation requiring stable component supply across extended temperature ranges (−40°C to +85°C).
Supply support for MAX4453EKA 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 MAX445x family targets ultra-low-power, high-speed signal conditioning in space-constrained portable electronics - specifically engineered to replace legacy op-amps in battery-operated RF and sensor interfaces without sacrificing bandwidth or DC accuracy.
FAQ
What is the maximum capacitive load the MAX4453EKA can drive without instability?
The MAX4453EKA is not optimized for highly reactive loads. Driving >22pF directly may cause ringing or oscillation due to phase margin degradation. For capacitive loads exceeding 22pF, Maxim recommends inserting a series isolation resistor (RISO) between the output and load - values range from 10Ω to 30Ω depending on capacitance, as shown in Figure 2 of the MAX4453EKA datasheet. This technique restores stability while preserving bandwidth.
Does the MAX4453EKA support true rail-to-rail input operation?
No, the MAX4453EKA does not feature rail-to-rail input. Its input common-mode voltage range is specified from (VEE − 0.1V) to (VCC − 1.5V). At VCC = 3.3V, this means inputs must stay within 0.1V to 1.8V - excluding the top 1.5V near VCC. However, its ground-sensing capability (down to VEE − 0.1V) makes it well-suited for single-supply sensor interfaces where low-side signal capture is essential.
Can the MAX4453EKA operate from a 2.5V supply?
No, the MAX4453EKA has a minimum operating supply voltage of +2.7V as specified in its Absolute Maximum Ratings and DC Electrical Characteristics tables. Operation below 2.7V is not guaranteed - parameters such as bandwidth, slew rate, and output swing degrade outside the 2.7V–5.25V range. For 2.5V systems, consider the MAX4472 or similar lower-voltage alternatives.
What is the typical input offset voltage matching between the two amplifiers in the MAX4453EKA?
The MAX4453EKA specifies input offset voltage matching of ±1mV between its two amplifiers (Amplifier A and Amplifier B) across temperature. This tight matching enables precise dual-path signal processing - such as I/Q channel balancing in direct-conversion receivers - without requiring per-channel calibration or trimming resistors.
Is the MAX4453EKA pin-compatible with other devices in the MAX445x/MAX435x family?
Yes, all 8-pin variants in the MAX4453/MAX4353 series - including MAX4453EKA (SOT23-8), MAX4453EZA (Thin SOT23-8), and MAX4453ESA (SO-8) - share identical pinouts per the Pin Configurations diagram on page 14 of the datasheet. However, MAX4353 variants are compensated for minimum +5V/V gain and are not unity-gain stable, so they are not functionally interchangeable without circuit redesign.
MAX4453EKA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 95V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 200 MHz
- Current - Input Bias:
- 800 nA
- Voltage - Input Offset:
- 400 µV
- Current - Supply:
- 620µA (x2 Channels)
- Current - Output / Channel:
- 22 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.25 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
MAX4453EKA FAQ
1.How can I place an order for MAX4453EKA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4453EKA 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 MAX4453EKA reliable?
The price and inventory of MAX4453EKA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4453EKA is usually 5 days.
3.What payment methods are accepted for MAX4453EKA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4453EKA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4453EKA?
MAX4453EKA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4453EKA 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 MAX4453EKA?
For technical support, including MAX4453EKA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4453EKA requirements.
6.How does Aetrix verify that MAX4453EKA is sourced from the original manufacturer or authorized distributors?
All MAX4453EKA 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 MAX4453EKA meets industry standards.
7.What is the process for return or replacement of MAX4453EKA?
All MAX4453EKA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4453EKA, 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 MAX4453EKA part is unused and in its original packaging.
Return procedure for MAX4453EKA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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