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Analog Devices Inc./Maxim Integrated MAX6190AESA+
- Part No.:
- MAX6190AESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6190AESA+.pdf
- Description:
- IC VREF SERIES 0.16% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:187
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Product details
Overview
MAX6190AESA+ from Maxim Integrated is a precision, micropower, low-dropout series-mode bandgap voltage reference delivering 1.250V output with ±2mV initial accuracy, 4ppm/°C max temperature coefficient, and 35µA max quiescent supply current. It operates from 2.5V to 12.6V input, sustains ±500µA load current with 100mV dropout at 500µA, and is stable with capacitive loads up to 2.2nF - ideal for high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the MAX6190AESA+ datasheet, MAX6190AESA+ pinout, MAX6190AESA+ application, or MAX6190AESA+ equivalent, key selection criteria include initial voltage tolerance, thermal drift performance over -40°C to +85°C, micropower operation under varying input voltage, and guaranteed load regulation for precision analog signal chains.
Technical Context
The MAX6190AESA+ uses a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve <5ppm/°C temperature coefficient and ±2mV (±0.16%) initial accuracy at 25°C. Its series-mode architecture enables bidirectional load current (±500µA) without external components while maintaining stability across 0–2.2nF output capacitance.
It features internal compensation, 30µs typical turn-on settling time to 0.1%, 86dB ripple rejection at 120Hz, and load regulation of 0.12µV/µA - enabling direct use in high-resolution data acquisition systems where supply noise and dynamic load transients must be tightly controlled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.250V ±2mV (±0.16%) - tight tolerance ensures minimal calibration burden in 12–16-bit converter references. |
| Temp Coefficient | 4ppm/°C max - guarantees ≤±0.42mV drift over -40°C to +85°C ambient, critical for unheated industrial sensors. |
| Quiescent Current | 35µA max - enables >10-year battery life in coin-cell-powered handheld meters with 200mAh capacity. |
| Dropout Voltage | 100mV at 500µA load - supports operation from 1.35V input, compatible with single Li-ion or 2×AA configurations. |
| Load Regulation | 0.12µV/µA - contributes <±60µV error over full ±500µA sourcing/sinking range, preserving LSB integrity. |
| Line Regulation | 8µV/V - limits input supply variation impact to <±100µV across 2.5–12.6V VIN range. |
| Noise (0.1–10Hz) | 65µVRMS - low flicker noise avoids degradation of DC precision in weigh-scale and medical front-ends. |
Pinout & Package
MAX6190AESA+ is housed in an 8-pin SO (Small Outline) package, RoHS-compliant and lead-free, with exposed pad not electrically connected. Pin 1 is OUT, Pin 2 is IN, Pin 4 is GND; Pins 1,3,5,7,8 are No Connect (N.C.) - internally unconnected and must remain floating per datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7, 8 | N.C. | No internal connection - must be left unconnected on PCB; no routing or grounding permitted. |
| 2 | IN | Positive supply input - accepts 2.5V to 12.6V; supplies internal bandgap core and output buffer. |
| 4 | GND | Analog ground reference - requires low-impedance connection to system AGND plane for noise immunity. |
| 6 | OUT | Precision 1.250V reference output - capable of sourcing/sinking ±500µA with <100mV dropout. |
Key Features
| Feature | Design Value |
|---|---|
| Curvature-corrected bandgap | Enables 4ppm/°C max TCVOUT without external trimming - eliminates system-level temperature calibration. |
| Laser-trimmed thin-film resistors | Guarantees ±2mV initial accuracy - reduces post-manufacturing calibration steps in production test. |
| Capacitive-load stability (0–2.2nF) | Eliminates mandatory output capacitor - saves board space and cost in space-constrained portable designs. |
| Bidirectional load capability (±500µA) | Supports both sourcing and sinking - simplifies interface to op-amp bias networks and programmable gain stages. |
| Internal compensation | Ensures stability without external compensation components - accelerates design-in for fast-turnaround prototypes. |
Applications
| Hand-Held Instruments | Analog-to-Digital Converters |
|---|---|
Use Scenario: Battery-powered digital multimeter requiring stable reference for 16-bit SAR ADC across 0–50°C operating range. IC Role / Device Role / Timing Role: Primary voltage reference for ADC VREF input, directly setting full-scale measurement range. Use Value: 4ppm/°C drift ensures <±0.8mV error over temperature - maintains 0.01% measurement accuracy without recalibration. |
Use Scenario: Precision data logger sampling thermocouple and RTD signals at 100ksps using 18-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Low-noise, low-drift reference for ADC's internal PGA and conversion core. Use Value: 65µVRMS (0.1–10Hz) noise and 0.12µV/µA load regulation preserve effective resolution beyond 16 ENOB. |
| Industrial Process Control | Precision 3V/5V Systems |
Use Scenario: 4–20mA loop-powered transmitter with HART modulation, operating from 12V supply with wide ambient swings. IC Role / Device Role / Timing Role: Reference for DAC generating precise current-setpoint voltage in isolation stage. Use Value: 35µA quiescent current minimizes loop power budget impact; 100mV dropout allows margin for supply sag during surge events. |
Use Scenario: FPGA I/O bank biasing and ADC reference in a 3.3V industrial controller with shared 3.3V rail. IC Role / Device Role / Timing Role: Secondary precision reference derived from main 3.3V supply for analog subsystems. Use Value: 8µV/V line regulation prevents reference shift during digital switching noise on 3.3V rail, reducing code spread. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3412ARJZ-R7 | 1.2V output, ±1.2mV initial accuracy, 3ppm/°C TC, 125µA supply current, SOT-23-5 package. | Higher supply current limits battery life; smaller SOT-23 footprint but lower load drive (±10mA). | Select when ultra-low TC (3ppm/°C) outweighs micropower requirement and board layout permits SOT-23. |
| REF191GS | 1.25V output, ±2mV accuracy, 5ppm/°C TC, 45µA supply current, SO-8 package, integrated enable pin. | Includes active-low ENABLE for power gating; slightly higher quiescent current and wider TC spec. | Choose when system-level power sequencing or sleep-mode control is required alongside reference functionality. |
Compared with ADR3412ARJZ-R7 and REF191GS, the MAX6190AESA+ offers the lowest quiescent current (35µA max) in SO-8 while matching ±2mV accuracy and delivering superior load regulation (0.12µV/µA), making it optimal for always-on, space-constrained, battery-sensitive precision analog systems.
Availability
MAX6190AESA+ is available at Aetrix Electronics and suitable for hand-held instruments, analog-to-digital converters, and industrial process control systems requiring stable component supply with guaranteed long-term availability and traceable lot history.
Supply support for MAX6190AESA+ 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, medical, and communications applications.
The MAX6190–MAX6195/MAX6198 family was engineered specifically for micropower, high-accuracy voltage referencing in portable and battery-operated measurement systems where thermal stability and supply efficiency are critical.
FAQ
What is the maximum load current the MAX6190AESA+ can source or sink?
The MAX6190AESA+ is specified to source and sink up to ±500µA while maintaining output voltage accuracy within guaranteed limits. At 500µA sourcing, dropout is 100mV; load regulation is characterized at 0.12µV/µA, contributing <±60µV total error across the full ±500µA range. This bidirectional capability supports active biasing of op-amps and precision current sources without external buffers.
Does the MAX6190AESA+ require an output capacitor for stability?
No, the MAX6190AESA+ is internally compensated and stable with output capacitance ranging from 0 to 2.2nF. An external capacitor is optional and only recommended in applications subject to large load or supply transients - where it reduces overshoot/undershoot and improves transient response. Omitting it saves board area and BOM cost in space-constrained portable designs.
What is the supply voltage range for the MAX6190AESA+?
The MAX6190AESA+ operates from a minimum input voltage of 2.5V up to 12.6V. The minimum is defined by the dropout requirement: for 500µA load, VIN must be ≥ VOUT + 100mV = 1.35V, but the absolute minimum specified is 2.5V to ensure proper internal circuit biasing and guaranteed performance across temperature. Operation below 2.5V is not characterized or supported.
How does the MAX6190AESA+ achieve its low temperature coefficient?
The MAX6190AESA+ achieves ≤4ppm/°C temperature coefficient using a proprietary curvature-correction circuit combined with laser-trimmed precision thin-film resistors. This corrects second-order thermal effects in the bandgap core, eliminating the need for external compensation networks or system-level software correction - delivering factory-calibrated drift performance across -40°C to +85°C.
Is the MAX6190AESA+ pin-compatible with other devices in the MAX6190 family?
Yes, all MAX6190–MAX6195/MAX6198 variants in the 8-pin SO package share identical pinout: Pin 2 is IN, Pin 4 is GND, Pin 6 is OUT, and Pins 1/3/5/7/8 are N.C. This allows drop-in replacement across output voltages (1.25V to 5.0V) and accuracy grades (A/B/C) without PCB redesign - provided input voltage, load, and thermal requirements are verified for the specific variant.
MAX6190AESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- -
- Current - Output:
- 500 µA
- Tolerance:
- ±0.16%
- Temperature Coefficient:
- 5ppm/°C
- Noise - 0.1Hz to 10Hz:
- 25µVp-p
- Noise - 10Hz to 10kHz:
- 65µVrms
- Voltage - Input:
- 2.5V ~ 12.6V
- Current - Supply:
- 35µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6190AESA+ FAQ
1.How can I place an order for MAX6190AESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6190AESA+ 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 MAX6190AESA+ reliable?
The price and inventory of MAX6190AESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6190AESA+ is usually 5 days.
3.What payment methods are accepted for MAX6190AESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6190AESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6190AESA+?
MAX6190AESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6190AESA+ 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 MAX6190AESA+?
For technical support, including MAX6190AESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6190AESA+ requirements.
6.How does Aetrix verify that MAX6190AESA+ is sourced from the original manufacturer or authorized distributors?
All MAX6190AESA+ 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 MAX6190AESA+ meets industry standards.
7.What is the process for return or replacement of MAX6190AESA+?
All MAX6190AESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6190AESA+, 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 MAX6190AESA+ part is unused and in its original packaging.
Return procedure for MAX6190AESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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