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Analog Devices Inc./Maxim Integrated MAX4167EPA
- Part No.:
- MAX4167EPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX4167EPA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,575
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Product details
Overview
The MAX4167EPA from Maxim Integrated is a dual, precision, rail-to-rail input/output operational amplifier optimized for high-output-drive (±80mA), low-power (1.3mA per amplifier), single-supply operation (2.7V to 6.5V), and wide dynamic range-designed specifically for portable audio driver stages in battery-powered systems such as laptop sound ports and hands-free car kits.
For engineers reviewing the MAX4167EPA datasheet, MAX4167EPA pinout, MAX4167EPA application, or MAX4167EPA equivalent, key selection criteria include guaranteed output drive into 25Ω loads, rail-to-rail I/O swing with <430mV headroom at VCC = 5V, 5MHz gain-bandwidth, 250µV typical offset voltage, and dual-channel independence without shutdown functionality.
Technical Context
The MAX4167EPA implements a composite rail-to-rail input stage using parallel NPN and PNP differential pairs, enabling common-mode input range from VEE − 0.15V to VCC + 0.15V across −40°C to +85°C. Its output stage delivers ±80mA min sink/source while maintaining rail-to-rail swing-guaranteed to within 430mV of VCC and 350mV of VEE at 25Ω load and VCC = 5V.
It features unity-gain stability with capacitive loads up to 250pF, 120dB open-loop gain (RL = 100kΩ), 88dB PSRR, and no phase reversal under overdriven inputs-enabling robust signal conditioning in DAC buffers and transformer drivers without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +6.5V single supply; enables direct integration into 3.3V/5V portable systems without level-shifting. |
| Output Drive Current | ±80mA minimum into 25Ω; sufficient to directly drive 32Ω headphones or small speakers without external transistors. |
| Input Offset Voltage | 0.25mV typical (25°C), 1.0mV max (−40°C to +85°C); ensures low DC error in precision sensor interfaces and DAC buffers. |
| Gain-Bandwidth Product | 5MHz; supports audio bandwidth (20Hz–20kHz) with >100dB loop gain margin and stable transient response. |
| Rail-to-Rail I/O Swing | VOUT swings to within 350mV of VEE and 430mV of VCC at full load; maximizes usable dynamic range in single-supply audio paths. |
| Quiescent Current | 1.3mA per amplifier at VCC = 5V; balances performance and battery life in always-on audio subsystems. |
| PSRR / CMRR | 67dB PSRR and 71dB CMRR (−40°C to +85°C); rejects supply noise and common-mode interference in noisy embedded environments. |
Pinout & Package
The MAX4167EPA is housed in an 8-pin plastic DIP package with through-hole mounting and standard 0.3-inch body width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output; capable of sourcing/sinking ±80mA; requires thermal-aware PCB layout for sustained high-current operation. |
| 2 | IN1− | Inverting input of Amplifier 1; matched impedance critical to minimize bias-current-induced offset in precision configurations. |
| 3 | IN1+ | Noninverting input of Amplifier 1; rail-to-rail common-mode range extends 0.15V beyond supply rails for full-swing signal capture. |
| 4 | VEE | Negative supply pin; grounded in single-supply mode; serves as reference for output swing and bias network. |
| 5 | VCC | Positive supply pin; accepts 2.7V–6.5V; requires local 0.1µF ceramic + ≥1µF bulk bypassing for stability. |
| 6 | IN2+ | Noninverting input of Amplifier 2; electrically isolated from Amp1; enables independent dual-channel signal paths. |
| 7 | IN2− | Inverting input of Amplifier 2; supports inverting/noninverting configurations per channel without crosstalk. |
| 8 | OUT2 | Amplifier 2 output; identical drive capability and rail-to-rail behavior as OUT1; supports stereo or differential output topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends from VEE − 0.15V to VCC + 0.15V over full temperature range-enables direct sensing of signals near supply rails without attenuation. |
| High-output current drive | Guaranteed ±80mA minimum into 25Ω-eliminates need for external output transistors in headphone and line-driver applications. |
| No phase reversal on overdrive | Prevents latch-up or signal inversion when inputs exceed common-mode limits-critical for fault-tolerant audio and motor control feedback paths. |
| Unity-gain stable with 250pF load | Allows direct driving of long traces, cables, or ADC input capacitance without external isolation resistors or compensation networks. |
| Low input offset voltage drift | ±3µV/°C tempco-maintains DC accuracy across industrial temperature range without recalibration. |
Applications
| Portable Headphone Driver | Laptop Audio Codec Buffer |
|---|---|
Use Scenario: Driving 32Ω stereo headphones from a 3.3V codec output in ultra-thin notebooks with strict power budgets. IC Role / Device Role / Timing Role: Dual-channel op amp configured as noninverting buffer per channel; provides gain-of-1 signal amplification with rail-to-rail swing and low THD. Use Value: Delivers >100mW into 32Ω with <0.02% THD+N at 1kHz, eliminating discrete output stages and reducing BOM count by two transistors per channel. | Use Scenario: Isolating and amplifying DAC outputs in laptop sound cards where ground bounce and supply noise degrade SNR. IC Role / Device Role / Timing Role: Precision buffer between DAC and jack connector; rejects supply ripple via 67dB PSRR and maintains DC accuracy with 1.0mV max offset. Use Value: Enables >95dB SNR in audio playback path by suppressing coupling noise from CPU and display power domains. |
| Set-Top Box Audio Output | Hands-Free Car Kit Line Driver |
Use Scenario: Boosting line-level analog audio (2Vrms) to drive external powered speakers in consumer STBs with space-constrained PCBs. IC Role / Device Role / Timing Role: Dual op amp in inverting configuration with gain = 2; drives 10kΩ loads with minimal distortion and fast settling. Use Value: Provides 4Vrms output swing with <2.1% THD at 1kHz and full 20Hz–20kHz bandwidth-meets CE-compliant audio output specs. | Use Scenario: Amplifying microphone and speaker signals in automotive hands-free kits operating from 5V vehicle power with EMI exposure. IC Role / Device Role / Timing Role: Dual-channel signal conditioner: one amp for mic preamp (gain = 100), second for speaker driver (gain = 1). Use Value: Achieves >70dB CMRR and 88dB PSRR to suppress alternator noise and ignition transients-ensuring clear voice transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual precision rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2340UA | Lower output drive (±20mA), higher quiescent current (1.8mA), same GBW (5.5MHz) and rail-to-rail I/O. | Not suitable for direct 32Ω headphone drive; requires external buffer for speaker loads. | Select when lower cost and proven qualification outweigh output current requirements. |
| AD8666ARZ | Higher offset (600µV max), lower drive (±45mA), wider supply range (2.7V–16V), same dual rail-to-rail architecture. | Better suited for general-purpose instrumentation than high-current audio; lacks guaranteed 25Ω drive spec. | Choose for mixed-signal systems needing wider supply flexibility and higher voltage headroom. |
Compared with OPA2340UA and AD8666ARZ, the MAX4167EPA uniquely combines guaranteed ±80mA output drive, sub-millivolt offset, and 5MHz bandwidth in a legacy-compatible DIP package-making it the only option qualified for direct low-impedance audio load driving in space-constrained industrial designs.
Availability
MAX4167EPA is available at Aetrix Electronics and suitable for portable audio systems, laptop sound ports, and automotive hands-free kits requiring stable component supply and long-term industrial temperature support (−40°C to +85°C).
Supply support for MAX4167EPA 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 high-performance analog and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX4165–MAX4169 family was engineered specifically for battery-powered audio signal chains-prioritizing rail-to-rail operation, high output current, and low quiescent power without sacrificing DC precision or AC fidelity.
FAQ
What is the maximum capacitive load the MAX4167EPA can drive stably?
The MAX4167EPA is unity-gain stable with capacitive loads up to 250pF, as confirmed in the datasheet's AC Electrical Characteristics and Typical Operating Characteristics (Figure 8). For loads exceeding this-such as long cables or ADC input capacitance-adding a 10Ω–39Ω isolation resistor in series with the output restores phase margin without degrading audio bandwidth.
Does the MAX4167EPA have a shutdown feature?
No, the MAX4167EPA 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 MAX4167EPA is a dual op amp without shutdown logic-its quiescent current remains at 1.3mA per amplifier across all operating conditions.
Can the MAX4167EPA operate from a 3.3V supply?
Yes, the MAX4167EPA is fully specified for operation from +2.7V to +6.5V single supply, including 3.3V. At VCC = 3.3V, it delivers rail-to-rail output swing (within ~300mV of rails at light loads), 1.2mA quiescent current per amplifier, and maintains 5MHz GBW-making it ideal for modern low-voltage portable systems.
What is the thermal limitation when driving 32Ω headphones continuously?
Driving 32Ω at ±80mA peak into a 3.3V supply generates ~211mW per amplifier in the MAX4167EPA DIP package. With its 727mW max power dissipation (8-pin DIP, derated above +70°C), continuous operation is thermally viable at ambient ≤+65°C. For sustained high-power use, add copper pour and airflow-or consider the SO-package MAX4167ESA for better thermal resistance.
Is the MAX4167EPA pin-compatible with other op amps in the MAX416x family?
The MAX4167EPA shares the same 8-pin DIP pinout as the MAX4166EPA and MAX4167ESA, but differs from shutdown-enabled variants (e.g., MAX4168EPD) which allocate pins 1 and 8 to SHDN1/SHDN2 instead of OUT1/OUT2. Always verify pin functions against the specific device's Pin Configuration diagram-not package outline-to avoid misconnection.
MAX4167EPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- 250 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX4167EPA FAQ
1.How can I place an order for MAX4167EPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4167EPA 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 MAX4167EPA reliable?
The price and inventory of MAX4167EPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4167EPA is usually 5 days.
3.What payment methods are accepted for MAX4167EPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4167EPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4167EPA?
MAX4167EPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4167EPA 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 MAX4167EPA?
For technical support, including MAX4167EPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4167EPA requirements.
6.How does Aetrix verify that MAX4167EPA is sourced from the original manufacturer or authorized distributors?
All MAX4167EPA 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 MAX4167EPA meets industry standards.
7.What is the process for return or replacement of MAX4167EPA?
All MAX4167EPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4167EPA, 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 MAX4167EPA part is unused and in its original packaging.
Return procedure for MAX4167EPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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