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Analog Devices Inc./Maxim Integrated MAX4167ESA
- Part No.:
- MAX4167ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4167ESA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,605
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Product details
Overview
MAX4167ESA from Maxim Integrated is a dual, precision, rail-to-rail input/output operational amplifier optimized for low-voltage, single-supply operation with 80mA output drive per channel, 5MHz gain-bandwidth product, and 250µV typical input offset voltage. It operates from +2.7V to +6.5V, draws 1.3mA quiescent current per amplifier, and delivers rail-to-rail swing into 25Ω loads - ideal for portable headphone drivers and battery-powered audio interfaces.
For engineers reviewing the MAX4167ESA datasheet, MAX4167ESA pinout, MAX4167ESA application, or MAX4167ESA equivalent, this page provides verified specifications, SO-8 package layout, dual-channel timing-critical signal conditioning use cases, and validated alternative op amps for portable audio and DAC buffer designs.
Technical Context
The MAX4167ESA integrates two independent high-output-drive amplifiers in a single SO-8 package, each featuring a composite rail-to-rail input stage (NPN/PNP switchover near VCC/2) and a robust output stage capable of sourcing/sinking ±80mA. Its unity-gain stability extends to 250pF capacitive loads without external compensation.
Unlike single-amplifier variants (e.g., MAX4165), the MAX4167ESA supports dual-channel applications such as bridge-tied load (BTL) configurations and stereo DAC buffering, with separate inverting/noninverting inputs and outputs per channel - no shared internal nodes or cross-talk paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +6.5V single supply - enables direct integration with Li-ion (3.0–4.2V) and 3.3V/5V logic systems without level-shifting. |
| Output Drive Current | ±80mA min per channel - sufficient to drive 32Ω headphones at >1Vrms without external buffers. |
| Gain-Bandwidth Product | 5MHz - supports stable unity-gain operation up to ~100kHz with 250pF load, suitable for audio bandwidth and fast-settling DAC buffers. |
| Input Offset Voltage | 0.25mV typ (25°C), 1.0mV max (–40°C to +85°C) - ensures <0.1% DC error in precision gain stages and sensor signal chains. |
| Rail-to-Rail I/O | Input common-mode range: VEE – 0.15V to VCC + 0.15V; output swing: within 340mV of rails (VCC = 5V, RL = 25Ω) - maximizes dynamic range in single-supply audio paths. |
| Quiescent Current | 1.3mA per amplifier (VCC = 5V) - balances performance and battery life in always-on portable audio subsystems. |
| PSRR / CMRR | 67dB min PSRR, 71dB min CMRR (–40°C to +85°C) - rejects supply noise and common-mode interference in noisy embedded environments. |
Pinout & Package
MAX4167ESA is housed in an 8-pin SO (Small Outline) package, 3.9mm × 4.9mm × 1.75mm body, with standard JEDEC MS-012AC footprint and gull-wing leads. Pin 1 marked by beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - drives load directly; high-impedance when unused or in shutdown (if applicable). |
| 2 | IN1− | Inverting input of Amplifier 1 - connects to feedback network or inverting gain configuration. |
| 3 | IN1+ | Noninverting input of Amplifier 1 - accepts reference, sensor, or DAC output signals. |
| 4 | VEE | Negative supply / ground - return path for both amplifiers; must be low-impedance for rail-to-rail output fidelity. |
| 5 | VCC | Positive supply - powers both amplifiers; requires local 0.1µF ceramic + 1µF bulk bypassing. |
| 6 | IN2+ | Noninverting input of Amplifier 2 - electrically isolated from IN1+; supports independent dual-channel operation. |
| 7 | IN2− | Inverting input of Amplifier 2 - used for second channel feedback or differential input configuration. |
| 8 | OUT2 | Amplifier 2 output - fully independent of OUT1; enables stereo, BTL, or parallel drive topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Extends common-mode range beyond rails (VEE – 0.15V to VCC + 0.15V), enabling full-scale signal handling in single-supply 3.3V systems. |
| High output current drive | Guaranteed ±80mA per channel eliminates need for discrete output transistors in 32Ω headphone driver designs. |
| Capacitive load stability | Stable with up to 250pF directly on output - avoids oscillation in PCB traces, connectors, or long cables without isolation resistors. |
| Low input offset voltage | 250µV typical offset minimizes DC error in precision instrumentation and sensor front-ends without trimming. |
| No phase reversal | Prevents catastrophic latch-up during input overdrive - critical for robustness in unbuffered ADC inputs or transient-prone industrial interfaces. |
Applications
| Portable Headphone Driver | Stereo DAC Output Buffer |
|---|---|
Use Scenario: Driving 16–32Ω stereo headphones from a portable media player with 3.3V supply and no negative rail. IC Role / Device Role / Timing Role: Dual-channel voltage follower/buffer delivering rail-to-rail swing and low THD+N (<0.02% at 1kHz) across audio band. Use Value: Eliminates coupling capacitors and DC-blocking networks, reducing BOM count and low-frequency distortion. | Use Scenario: Isolating and amplifying dual-channel audio DAC outputs before feeding analog line-level inputs. IC Role / Device Role / Timing Role: Precision unity-gain buffer with 5MHz GBW and 250µV offset, preserving DAC resolution and settling time. Use Value: Maintains SNR >95dB and prevents DAC output loading-induced nonlinearity or clock feedthrough. |
| Bridge-Tied Load (BTL) Amplifier | Low-Voltage Motor Driver Interface |
Use Scenario: Configuring two MAX4167ESA channels in anti-phase to drive a 50Ω speaker load from 3V supply. IC Role / Device Role / Timing Role: Dual op amp implementing complementary output stage with matched gain and phase response. Use Value: Doubles effective output voltage swing (2×VCC) and quadruples power delivery vs. single-ended mode. | Use Scenario: Providing bidirectional 50mA drive for small PMDC motors or solenoids in handheld test equipment. IC Role / Device Role / Timing Role: Low-voltage, rail-to-rail output amplifier acting as H-bridge half-bridge driver with fast enable/disable control. Use Value: Enables precise PWM-controlled motor speed regulation without external FETs or charge pumps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, high-output-drive op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2340UA | Lower output drive (±20mA), higher quiescent current (1.6mA), same SO-8 package and rail-to-rail I/O. | Not suitable for direct 32Ω headphone drive; better for low-noise sensor buffering where drive demand is <10mA. | Select OPA2340UA only when ultra-low Vn (16nV/√Hz) outweighs drive capability requirements. |
| AD8642ARZ | Higher precision (60µV max VOS), lower GBW (3.5MHz), no guaranteed 80mA drive - rated for ±45mA min. | Preferred for precision instrumentation over audio; insufficient peak current for sustained 32Ω loads at 1Vrms. | Choose AD8642ARZ when DC accuracy and low drift dominate over dynamic output capability. |
Compared with OPA2340UA and AD8642ARZ, the MAX4167ESA uniquely combines dual-channel architecture, guaranteed ±80mA drive, 5MHz GBW, and SO-8 compatibility - making it the only option among the three qualified for battery-powered headphone driver and BTL audio applications requiring full rail-to-rail swing into ≤32Ω.
Availability
MAX4167ESA is available at Aetrix Electronics and suitable for portable audio systems, stereo DAC interface modules, and low-voltage motor control circuits requiring stable component supply, extended temperature support (–40°C to +85°C), and SO-8 footprint compatibility.
Supply support for MAX4167ESA 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, connectivity, and signal chain applications.
The MAX4165–MAX4169 family was engineered specifically for portable, battery-powered audio systems demanding high output current, rail-to-rail operation, and low quiescent power - targeting headphone drivers, DAC buffers, and compact speaker amplifiers.
FAQ
What is the maximum capacitive load the MAX4167ESA can drive stably?
The MAX4167ESA is unity-gain stable with capacitive loads up to 250pF without external compensation. This is confirmed in the datasheet's AC Electrical Characteristics and Figure 8 (Capacitive-Load Stability). Exceeding 250pF may cause peaking or oscillation unless an isolation resistor (e.g., 39Ω) is added in series with the output, as demonstrated in Figures 9 and 10. For MAX4167ESA-based designs driving cables or long PCB traces, verify load capacitance with TDR or network analyzer measurement before final layout.
Does the MAX4167ESA have a shutdown feature?
No, the MAX4167ESA does not include a shutdown function. Per the Selector Guide and Pin Description tables, only the MAX4166 (single) and MAX4168 (dual) variants feature SHDN pins. The MAX4167ESA is a dual op amp without shutdown - its quiescent current remains at 1.3mA per amplifier under all operating conditions. If low-power sleep mode is required, consider the pin-compatible MAX4168ESA instead, which adds active-low shutdown control per channel.
What is the minimum supply voltage for reliable operation of the MAX4167ESA?
The MAX4167ESA operates reliably down to +2.7V over the full temperature range (–40°C to +85°C), as specified in Absolute Maximum Ratings and DC Electrical Characteristics. Figure 9 (Minimum Operating Voltage vs. Temperature) confirms functionality at 2.7V across –40°C to +85°C. Below 2.7V, parameters such as output swing, CMRR, and PSRR degrade outside guaranteed limits - do not operate the MAX4167ESA below 2.7V in production designs.
Can the MAX4167ESA drive a 16Ω speaker directly?
Yes, the MAX4167ESA can drive a 16Ω speaker directly, but thermal and power dissipation constraints must be observed. With ±80mA guaranteed output current and 5V supply, the device delivers up to ~320mW into 16Ω (VOUT ≈ 2.26Vpp). However, continuous operation near this limit risks exceeding the SO-8 package's 471mW absolute maximum power dissipation (derated above +70°C). Use short-duration audio peaks or add series resistance to limit average power. For sustained 16Ω drive, implement thermal monitoring or use a dedicated audio amplifier IC.
Is the MAX4167ESA pin-compatible with other op amps in the SO-8 package?
The MAX4167ESA follows the industry-standard SO-8 pinout for dual op amps (OUT1, IN1−, IN1+, VEE, VCC, IN2+, IN2−, OUT2), matching TI LM358, AD8602, and OPA2340 pin-for-pin. However, electrical behavior differs significantly: MAX4167ESA offers ±80mA drive and 5MHz GBW versus LM358's 40mA/1MHz. Substitution requires validation of output current, bandwidth, and supply voltage compatibility - mechanical fit does not guarantee functional equivalence.
MAX4167ESA 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:
- 2V/µs
- Gain Bandwidth Product:
- 5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 nA
- Voltage - Input Offset:
- 350 µV
- Current - Supply:
- 1.3mA (x2 Channels)
- Current - Output / Channel:
- 125 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 6.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX4167ESA FAQ
1.How can I place an order for MAX4167ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4167ESA 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 MAX4167ESA reliable?
The price and inventory of MAX4167ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4167ESA is usually 5 days.
3.What payment methods are accepted for MAX4167ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4167ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4167ESA?
MAX4167ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4167ESA 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 MAX4167ESA?
For technical support, including MAX4167ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4167ESA requirements.
6.How does Aetrix verify that MAX4167ESA is sourced from the original manufacturer or authorized distributors?
All MAX4167ESA 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 MAX4167ESA meets industry standards.
7.What is the process for return or replacement of MAX4167ESA?
All MAX4167ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4167ESA, 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 MAX4167ESA part is unused and in its original packaging.
Return procedure for MAX4167ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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