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Analog Devices Inc./Maxim Integrated MAX474ESA
- Part No.:
- MAX474ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX474ESA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,594
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Product details
Overview
MAX474ESA from Maxim Integrated is a dual, single-supply operational amplifier optimized for low-voltage portable systems. It delivers 10MHz unity-gain bandwidth, 15V/µs slew rate, rail-to-rail output swing (within ±50mV of rails), 2mA per amplifier supply current, and input voltage range extending to the negative rail. It is used in battery-powered instrumentation signal conditioning stages requiring fast settling and low quiescent power.
For engineers reviewing the MAX474ESA datasheet, MAX474ESA pinout, MAX474ESA application, or MAX474ESA equivalent, this page provides verified technical context, package-validated pin functions, real-world application mappings, and two confirmed alternative op amps with documented functional trade-offs for legacy design support and obsolescence mitigation.
Technical Context
The MAX474ESA implements a bipolar input stage with output transistors configured for rail-to-rail swing and short-circuit protection. Its unity-gain stability is validated up to 20pF capacitive load with 10kΩ parallel resistance, and phase margin remains ≥58° under those conditions.
It operates from a single 2.7V–5.25V supply or dual ±1.35V–±2.625V supplies, with input common-mode range including VEE and guaranteed output drive into 600Ω loads. Input bias current flows out of both inputs, requiring matched source impedances to minimize offset error.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.25V single supply - enables direct interface with 3V and 3.3V logic and battery systems without level-shifting. |
| Unity-Gain Bandwidth | 10MHz (min) - supports stable closed-loop operation up to ~1MHz at gain ≥10 with adequate phase margin. |
| Slew Rate | 15V/µs (min) - ensures ≤700ns settling to 0.1% for 1V step, suitable for medium-speed signal reconstruction. |
| Supply Current per Amp | 2.0mA (typ) at +25°C - allows dual-amplifier operation below 4.5mA total, critical for extended battery life. |
| Rail-to-Rail Output | Swings to within 50mV of VEE and VCC - preserves dynamic range in low-voltage ADC driver and sensor interface applications. |
| Input Common-Mode Range | Includes VEE (0V) - permits direct sensing of ground-referenced signals without input biasing networks. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and automotive under-hood environments where thermal stress is present. |
Pinout & Package
MAX474ESA is housed in an 8-pin SO (Small Outline) package, 3.9mm × 4.9mm body, 1.27mm pitch, JEDEC MS-012AC compliant. Pin 1 is marked by a beveled corner or dot; pin numbering follows standard SO convention (counterclockwise from pin 1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Amplifier A output - drives external load; short-circuit protected; rail-to-rail swing. |
| 2 | INA− | Inverting input of Amplifier A - high-impedance node; bias current flows out; requires matched impedance for offset control. |
| 3 | INA+ | Noninverting input of Amplifier A - same electrical characteristics as INA−; used for unity-gain buffer or noninverting gain stages. |
| 4 | VEE | Negative supply pin - connected to ground in single-supply mode; substrate tied to this pin. |
| 5 | INB+ | Noninverting input of Amplifier B - electrically isolated from Amplifier A; shares VEE and VCC rails. |
| 6 | INB− | Inverting input of Amplifier B - independent bias path; identical DC and AC specs to INA−. |
| 7 | OUTB | Amplifier B output - fully independent channel; same drive strength and protection as OUTA. |
| 8 | VCC | Positive supply pin - bypass with 0.1µF ceramic capacitor close to pin for noise suppression and stability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Output reaches within 50mV of VEE and VCC - maximizes usable signal swing in 3V systems, improving SNR in ADC front-ends. |
| 15V/µs minimum slew rate | Enables accurate reproduction of 1MHz full-scale sine waves (≤1.5Vpp) without slew-induced distortion. |
| 2mA per amplifier supply current | Allows dual-channel operation at <4.5mA total - extends runtime in coin-cell or Li-ion portable instruments. |
| Input range includes negative rail | Supports direct connection of ground-referenced sensors (e.g., thermocouples, bridge outputs) without level-shifting circuitry. |
| Short-circuit protected outputs | Withstands indefinite output shorts to VEE or VCC - eliminates need for external current-limiting resistors in test equipment interfaces. |
Applications
| Battery-Powered Instrumentation | Portable Signal Conditioning |
|---|---|
|
Use Scenario: Handheld multimeter front-end amplifying mV-level sensor outputs before 12-bit SAR ADC sampling. IC Role / Device Role / Timing Role: Dual-channel precision gain stage with one amp buffering reference voltage and the other amplifying differential sensor input. Use Value: Rail-to-rail output ensures full ADC input range utilization; 2mA per amp minimizes battery drain during continuous measurement mode. |
Use Scenario: Audio line driver in portable medical ultrasound device, transmitting analog beamformed signals to digitization stage. IC Role / Device Role / Timing Role: Dual op amp configured as unity-gain buffer and active filter stage (2nd-order Sallen-Key) operating from 3.3V supply. Use Value: 10MHz GBW and 15V/µs slew rate preserve pulse fidelity up to 500kHz; low supply current avoids thermal throttling in sealed enclosure. |
| Discrete Filter Implementation | Servo-Loop Error Amplification |
|
Use Scenario: 4th-order bandpass filter (fo = 190kHz, Q = 10) built using discrete RC and one 1/4 section of MAX475 - replicated for MAX474ESA dual use in lower-channel-count variant. IC Role / Device Role / Timing Role: Two independent amplifiers implementing feedback paths in cascaded biquad topology; each handles one 2nd-order stage. Use Value: Guaranteed 10MHz GBW ensures filter response matches theoretical transfer function up to cutoff; unity-gain stability prevents peaking at resonance. |
Use Scenario: Position error amplifier in closed-loop DC motor controller, comparing encoder feedback to PWM-modulated setpoint and driving H-bridge gate driver. IC Role / Device Role / Timing Role: Dual op amp used as integrator (amp A) and feedforward compensator (amp B) in Type-3 compensation network. Use Value: Input range including VEE allows direct interface with unipolar encoder signals; rail-to-rail output drives gate driver input over full 0–3.3V range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual, rail-to-rail output, single-supply op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2462IDR | Lower slew rate (1.6V/µs), higher supply current (550µA/amp), wider supply range (2.7–6V), CMOS input (pA bias). | Not suitable for >100kHz large-signal applications; better for high-impedance sensor buffering where speed is secondary. | Select when ultra-low input bias or extended supply headroom outweighs speed and power requirements. |
| AD8602ARZ | Higher precision (±65µV VOS max), lower noise (12nV/√Hz), 5V/µs slew rate, 1mA/amp supply current, rail-to-rail I/O. | Superior DC accuracy and noise performance; insufficient slew rate for >300kHz full-scale signals. | Prefer for precision instrumentation amplifiers or low-noise post-filtering stages where bandwidth ≤500kHz suffices. |
Compared with TLV2462IDR and AD8602ARZ, the MAX474ESA offers the highest slew rate and lowest supply current among these three dual rail-to-rail op amps - making it uniquely suited for battery-powered, medium-bandwidth signal chains where dynamic performance and energy efficiency are jointly constrained.
Availability
MAX474ESA is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable signal conditioning, discrete filter implementation, and servo-loop error amplification requiring stable component supply across industrial temperature ranges.
Supply support for MAX474ESA 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 MAX473/MAX474/MAX475 family was engineered as low-voltage, high-speed, rail-to-rail op amps targeting portable and battery-operated systems needing wide dynamic range and minimal quiescent power.
FAQ
Is MAX474ESA still recommended for new designs?
No. The MAX474ESA is Not Recommended for New Designs due to discontinuation of its wafer fabrication process. Maxim states the data sheet remains available for existing users, and replacement or second-source alternatives may be offered. Engineers designing new systems should evaluate modern equivalents like AD8602ARZ or TLV2462IDR based on required bandwidth, precision, and power constraints - while verifying compatibility with legacy MAX474ESA layouts if drop-in replacement is desired.
What is the maximum capacitive load the MAX474ESA can drive stably?
The MAX474ESA maintains ≥58° phase margin with a 10kΩ resistive load in parallel with 20pF capacitance. Driving larger capacitive loads (e.g., >100pF) risks instability and overshoot; Figure 3 in the datasheet shows degraded response at 390pF. For loads exceeding 50pF, Maxim recommends adding a series isolation resistor (e.g., 10Ω) between the output and capacitive load - as shown in Figure 4 - to restore phase margin and ensure monotonic settling.
Does MAX474ESA support input voltages below ground (VEE)?
No. The MAX474ESA input common-mode voltage range is specified from VEE to (VCC − 1.9V) - meaning it includes the negative rail (VEE = 0V in single-supply mode) but does not extend below it. Applying voltages less than VEE (e.g., −0.3V) violates Absolute Maximum Ratings and may cause latch-up or permanent damage. For inputs below ground, a level-shifting circuit or op amp with extended common-mode range (e.g., OPA192) is required.
Can the input offset voltage of MAX474ESA be trimmed externally?
No. Unlike the single MAX473 (which has dedicated NULL pins 1 and 8 for offset trimming), the MAX474ESA lacks offset null terminals. Its input offset voltage is factory-trimmed and specified as ±2.0mV (max) over the −40°C to +85°C temperature range. External trimming is not supported; system-level calibration or post-processing must compensate for residual offset in precision applications.
What package variants exist for MAX474ESA, and is µMAX offered?
The MAX474ESA is exclusively available in the 8-pin SO (SOIC) package, rated for −40°C to +85°C operation. While the MAX474 family includes a µMAX variant (MAX474CUA), that version is only offered in the 0°C to +70°C grade and uses a different pinout and footprint. The MAX474ESA designation confirms the 8-pin SO package with industrial temperature range - no µMAX or DIP variants carry the "ESA" suffix.
MAX474ESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- 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:
- 17V/µs
- Gain Bandwidth Product:
- 12 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 80 nA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 2mA (x2 Channels)
- Current - Output / Channel:
- -
- 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:
- 8-SOIC
MAX474ESA FAQ
1.How can I place an order for MAX474ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX474ESA 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 MAX474ESA reliable?
The price and inventory of MAX474ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX474ESA is usually 5 days.
3.What payment methods are accepted for MAX474ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX474ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX474ESA?
MAX474ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX474ESA 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 MAX474ESA?
For technical support, including MAX474ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX474ESA requirements.
6.How does Aetrix verify that MAX474ESA is sourced from the original manufacturer or authorized distributors?
All MAX474ESA 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 MAX474ESA meets industry standards.
7.What is the process for return or replacement of MAX474ESA?
All MAX474ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX474ESA, 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 MAX474ESA part is unused and in its original packaging.
Return procedure for MAX474ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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