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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:2,143
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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 current. It operates from 2.5V to 12.6V input, supports ±500µA load sourcing/sinking, and is used in high-accuracy ADC/DAC biasing and portable instrumentation.
For engineers reviewing the MAX6190AESA datasheet, MAX6190AESA pinout, MAX6190AESA application, or MAX6190AESA equivalent, key selection criteria include initial voltage error, thermal drift stability over -40°C to +85°C, dropout performance at 500µA, load regulation sensitivity (0.12µV/µA), and compatibility with capacitive loads up to 2.2nF without instability.
Technical Context
The MAX6190AESA employs a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve <5ppm/°C temperature coefficient and ±2mV initial accuracy. Its series-mode architecture enables bidirectional 500µA load drive capability while maintaining low 100mV dropout at full load.
Internally compensated for fast settling (30µs to 0.1%), it remains stable with capacitive loads from 0 to 2.2nF and exhibits 86dB ripple rejection at 120Hz. Supply current varies only ±0.8µA/V across its 2.5V–12.6V input range, ensuring consistent power efficiency in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.250V ±2mV - tight initial tolerance enables direct use in 12-bit+ data converters without calibration. |
| Temp Coefficient | 4ppm/°C max - ensures ≤±0.5mV drift over -40°C to +85°C ambient, critical for industrial sensor front-ends. |
| Quiescent Current | 35µA max - ultra-low standby draw extends battery life in handheld meters and IoT edge nodes. |
| Dropout Voltage | 100mV at 500µA - allows operation from 1.35V supply in 1.5V battery systems or low-voltage LDO outputs. |
| Load Regulation | 0.12µV/µA - minimal output shift under dynamic load changes, preserving reference integrity in multiplexed ADC designs. |
| Line Regulation | 8µV/V - rejects supply ripple effectively, reducing need for additional filtering in noisy power rails. |
| Noise (0.1–10Hz) | 65µVRMS - low flicker noise supports high-resolution precision measurement applications. |
Pinout & Package
MAX6190AESA is housed in an 8-pin SO (Small Outline) package with RoHS-compliant lead-free finish. Pin 1 (OUT) delivers the 1.250V reference; Pin 2 (IN) accepts 2.5V–12.6V supply; Pin 4 (GND) is the ground reference; Pins 1,3,5,7,8 are No Connect (N.C.) and must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7, 8 | N.C. | No internal connection - floating pins; no routing or grounding required. |
| 2 | IN | Supply input - accepts 2.5V to 12.6V; supplies internal bandgap core and output buffer. |
| 4 | GND | Analog ground reference - must be connected to clean system ground plane for optimal noise performance. |
| 6 | OUT | 1.250V precision reference output - capable of sourcing/sinking ±500µA with <100mV dropout. |
Key Features
| Feature | Design Value |
|---|---|
| Curvature-corrected bandgap | Enables 4ppm/°C tempco by compensating second-order thermal nonlinearity in silicon bandgap voltage. |
| Laser-trimmed thin-film resistors | Guarantees ±2mV initial accuracy without post-package trimming, improving production yield and long-term stability. |
| Internal compensation | Eliminates need for external compensation components; achieves 30µs 0.1% settling time with 50pF load. |
| Capacitive-load stability | Stable with 0–2.2nF output capacitance - supports decoupling caps for noise reduction without oscillation risk. |
| Bidirectional load drive | Sinks or sources up to 500µA - enables direct interface with op-amp inputs, DAC references, and current-sense circuits. |
Applications
| Hand-Held Instruments | Analog-to-Digital Converters |
|---|---|
Use Scenario: Portable multimeters and handheld data loggers operating from single 3V coin-cell or AA batteries. IC Role / Device Role / Timing Role: Provides stable 1.250V reference for SAR ADCs and analog front-end gain stages. Use Value: 35µA quiescent current and 100mV dropout extend battery runtime; ±2mV accuracy eliminates field calibration. | Use Scenario: High-resolution 16-bit sigma-delta ADCs in industrial process transmitters. IC Role / Device Role / Timing Role: Precision voltage reference for ADC conversion reference rail and PGA biasing. Use Value: 4ppm/°C tempco ensures <±0.5mV drift over full industrial temperature range, maintaining measurement integrity. |
| Industrial Process Control | Precision 3V/5V Systems |
Use Scenario: 4–20mA loop-powered sensors with local microcontroller and analog signal conditioning. IC Role / Device Role / Timing Role: Supplies accurate reference for current-output DACs and sensor excitation circuits. Use Value: Bidirectional ±500µA drive handles varying DAC load conditions; 86dB ripple rejection suppresses loop-induced noise. | Use Scenario: Reference source in 3.3V FPGA I/O banks or 5V microcontroller ADC subsystems. IC Role / Device Role / Timing Role: Low-noise, low-drift reference for mixed-signal SoC power domains. Use Value: 65µVRMS (0.1–10Hz) noise and 0.12µV/µA load regulation preserve SNR in sensitive analog sections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF191GS | 1.25V output, ±1.5mV initial accuracy, 3ppm/°C tempco, 45µA supply current, SO-8 package. | Lower initial error but higher quiescent current; less suitable for ultra-low-power battery operation. | Select REF191GS when tighter initial accuracy outweighs 10µA higher supply current in mains-powered test equipment. |
| ADR3412ARJZ-R7 | 1.2V output, ±1.2mV initial accuracy, 3ppm/°C tempco, 120µA supply current, SOT-23-5 package. | Different output voltage (1.2V vs. 1.25V); smaller footprint but higher current draw and no SO-8 pinout compatibility. | Choose ADR3412ARJZ-R7 only if board space is constrained and 1.2V reference suffices; not drop-in compatible. |
Compared with REF191GS and ADR3412ARJZ-R7, MAX6190AESA offers the lowest quiescent current (35µA) in an industry-standard SO-8 package while maintaining 1.250V nominal output-making it optimal for portable, battery-sensitive designs where both voltage level and power efficiency are critical.
Availability
MAX6190AESA is available at Aetrix Electronics and suitable for hand-held instruments, analog-to-digital converters, and industrial process control requiring stable component supply with guaranteed long-term availability and traceable sourcing.
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 is a semiconductor company specializing in analog and mixed-signal ICs for power, sensing, and communication applications.
The MAX6190–MAX6195/MAX6198 family was designed for precision, micropower, low-dropout voltage reference applications in battery-operated and thermally demanding environments.
FAQ
What is the maximum load current the MAX6190AESA can source or sink?
The MAX6190AESA can source or sink up to ±500µA while maintaining specified accuracy and dropout voltage. At 500µA load, dropout is guaranteed at 100mV, and load regulation is specified at 0.12µV/µA. Exceeding this current may cause output deviation beyond datasheet limits or thermal stress.
Does the MAX6190AESA require an external 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 used only to improve transient response during load or supply steps-not for basic stability. Board space-constrained designs can omit it entirely.
What is the supply voltage range for reliable operation of the MAX6190AESA?
The MAX6190AESA operates reliably from 2.5V to 12.6V input. Minimum supply must exceed VOUT + 0.2V (i.e., ≥1.45V) for regulation, but the absolute minimum rated VIN is 2.5V per datasheet specifications. Below 2.5V, turn-on behavior is not guaranteed, and supply current may rise transiently to 200µA.
How does temperature hysteresis affect the MAX6190AESA's long-term accuracy?
The MAX6190AESA exhibits ≤75ppm temperature hysteresis-the change in output voltage at +25°C before and after cycling from -40°C to +85°C. This translates to ≤0.094mV shift for the 1.250V output and is independent of long-term drift (50ppm/1000hrs). It reflects mechanical stress memory in the package, not aging.
Can the MAX6190AESA be used in bipolar reference circuits?
Yes, the MAX6190AESA is commonly used in bipolar reference designs-for example, paired with a charge-pump inverter like the MAX681 and an op-amp such as the ICL7652 to generate matched ±1.25V rails from a single 3V or 5V supply, as shown in Figure 1 of the datasheet.
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:
- Obsolete
- 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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