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Analog Devices Inc./Maxim Integrated MAX6190BESA+
- Part No.:
- MAX6190BESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6190BESA+.pdf
- Description:
- IC VREF SERIES 0.32% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:167
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Product details
Overview
MAX6190BESA+ from Maxim Integrated is a precision micropower low-dropout series voltage reference delivering 1.250V output with ±2mV initial accuracy, 5ppm/°C max temperature coefficient, and 35µA max quiescent current-designed for high-accuracy ADC/DAC biasing in battery-powered handheld instruments.
For engineers reviewing the MAX6190BESA+ datasheet, MAX6190BESA+ pinout, MAX6190BESA+ application, or MAX6190BESA+ equivalent, this page provides verified specifications, SO-8 package details, load-regulation behavior at ±500µA, dropout performance (100mV @ 500µA), and real-world settling time (30µs to 0.1%)-all critical for low-power precision analog system design.
Technical Context
The MAX6190BESA+ employs a curvature-corrected bandgap core with laser-trimmed thin-film resistors to achieve <5ppm/°C temperature stability and ±2mV initial tolerance over –40°C to +85°C. Its series-mode architecture enables bidirectional output current (±500µA) without external compensation.
Internally compensated for stability with capacitive loads up to 2.2nF, it exhibits 0.12µV/µA load regulation and 8µV/V line regulation-key for maintaining reference integrity across varying supply and load conditions in portable instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.250V ±2mV (±0.16% initial error at +25°C) |
| Temp Coefficient | ≤5ppm/°C (max drift over –40°C to +85°C) |
| Quiescent Current | ≤35µA (enables >1-year battery life in µA-scale systems) |
| Dropout Voltage | 100mV at 500µA load (supports operation down to VIN = 1.35V) |
| Load Regulation | 0.12µV/µA (output shift ≤60µV over full ±500µA sink/source range) |
| Line Regulation | 8µV/V (output shift ≤100µV over 2.5V–12.6V input range) |
| Capacitive Load Stability | Stable with 0–2.2nF (no minimum COUT required; saves board space) |
Pinout & Package
MAX6190BESA+ is housed in an 8-pin SO (Small Outline) package, RoHS-compliant and rated for –40°C to +85°C operation. Pin 1 is OUT, Pin 2 is IN, Pin 4 is GND; Pins 1,3,5,7,8 are No Connect (N.C.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7, 8 | N.C. | No internal connection-must be left floating or tied to GND per layout best practice |
| 2 | IN | Supply input (2.5V to 12.6V); supplies internal bandgap and output stage |
| 4 | GND | Analog ground reference; requires low-impedance connection to system ground plane |
| 6 | OUT | Precision 1.250V reference output; capable of sourcing/sinking ±500µA |
Key Features
| Feature | Design Value |
|---|---|
| Curvature-corrected bandgap | Enables ≤5ppm/°C TC without external trimming or calibration |
| Laser-trimmed thin-film resistors | Guarantees ±2mV initial accuracy without post-package adjustment |
| Bidirectional output drive | Sinks and sources up to 500µA-supports active filtering and buffered reference topologies |
| Zero-COUT requirement | Stable with no output capacitor-reduces BOM count and PCB area in space-constrained designs |
| Low-noise output | 65µVRMS (10Hz–10kHz) and 25µVP-P (0.1Hz–10Hz)-minimizes quantization noise in 16-bit+ ADCs |
Applications
| Hand-Held Instruments | Analog-to-Digital Converters |
|---|---|
Use Scenario: Portable multimeter or data logger operating from single-cell Li-ion or alkaline batteries. IC Role / Device Role / Timing Role: Precision 1.250V reference for SAR ADC front-end and DAC-based calibration circuitry. Use Value: Enables 16-bit effective resolution with <5ppm/°C drift-critical for field-deployed metrology where ambient temperature varies. |
Use Scenario: High-resolution industrial ADC module requiring stable reference under variable load and supply conditions. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage reference for ADC VREF input with ±500µA dynamic load current. Use Value: Delivers 0.12µV/µA load regulation and 30µs turn-on settling-ensures fast channel switching without reference-induced offset errors. |
| Industrial Process Control | Precision 3V/5V Systems |
Use Scenario: 4–20mA transmitter with microcontroller-based sensor signal conditioning and HART modulation. IC Role / Device Role / Timing Role: Stable 1.250V reference for current-loop DAC and analog front-end gain calibration. Use Value: 35µA quiescent current extends loop-powered device runtime; 100mV dropout allows operation from 3.3V rails with margin. |
Use Scenario: Low-power embedded system using 3.3V or 5V supply with mixed-signal SoC requiring clean analog reference. IC Role / Device Role / Timing Role: Primary voltage reference for internal ADC, external DAC, and sensor bias networks. Use Value: Immunity to supply ripple (86dB PSRR at 120Hz) and minimal line/load regulation preserve accuracy across rail tolerances and load transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3412BRMZ | 1.2V output, ±1.2mV initial accuracy, 3ppm/°C TC, 125µA supply current | Higher power consumption limits use in ultra-low-power battery systems | Select when tighter initial accuracy and lower TC outweigh quiescent current penalty |
| REF3012AIDBZR | 1.2V output, ±1.5mV initial accuracy, 50ppm/°C TC, 50µA supply current | Higher tempco degrades performance above 40°C; not suitable for wide-temperature industrial use | Select only for cost-sensitive, room-temperature consumer applications |
Compared with ADR3412BRMZ and REF3012AIDBZR, MAX6190BESA+ uniquely balances ultra-low quiescent current (35µA), tight tempco (≤5ppm/°C), and ±2mV accuracy-making it optimal for battery-powered precision instruments requiring long-term stability across temperature extremes.
Availability
MAX6190BESA+ 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 sourcing.
Supply support for MAX6190BESA+ 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 precision, power, and interface applications.
The MAX6190–MAX6195/MAX6198 family was engineered specifically for micropower, low-dropout voltage reference needs in battery-operated and space-constrained precision measurement systems.
FAQ
What is the maximum load current supported by MAX6190BESA+?
MAX6190BESA+ supports bidirectional load current up to ±500µA while maintaining specified accuracy and stability. It can source up to +500µA into a load and sink up to –500µA from a load, with guaranteed load regulation of 0.12µV/µA. This capability enables direct driving of op-amp inputs, DAC references, or active filter stages without external buffering-reducing system complexity and power loss.
Does MAX6190BESA+ require an output capacitor for stability?
No, MAX6190BESA+ is internally compensated and stable with output capacitance ranging from 0 to 2.2nF. Unlike many references, it does not require a minimum output capacitor-eliminating a common BOM item and saving PCB area. An optional capacitor may be added to improve transient response during large load steps, but it is never mandatory for stability.
What is the dropout voltage specification for MAX6190BESA+?
MAX6190BESA+ has a guaranteed dropout voltage of 100mV at 500µA load current, meaning it maintains regulation as long as VIN ≥ VOUT + 100mV (i.e., VIN ≥ 1.35V). This low dropout enables reliable operation from single-cell batteries (e.g., 1.5V alkaline or 3.0–3.6V Li-ion with aging margin) and low-voltage logic rails-critical for extended battery life in portable instrumentation.
How does MAX6190BESA+ perform under varying input voltage conditions?
MAX6190BESA+ exhibits excellent line regulation of 8µV/V over its full 2.5V–12.6V input range, translating to ≤100µV output shift across that span. Its supply current also remains highly stable-varying only 0.8µA/V with input voltage-ensuring consistent power draw and thermal behavior regardless of rail fluctuations, which is essential for precision metrology and battery-gauge accuracy.
Is MAX6190BESA+ compatible with standard SO-8 footprints?
Yes, MAX6190BESA+ uses the industry-standard 8-pin SO (Small Outline) package (outline 21-0041, land pattern 90-0096), fully compatible with common SOIC-8 PCB footprints and reflow profiles. The "+" suffix confirms RoHS compliance and lead-free termination, supporting modern assembly requirements without footprint or process changes.
MAX6190BESA+ 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:
- ±0.32%
- Temperature Coefficient:
- 10ppm/°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
MAX6190BESA+ FAQ
1.How can I place an order for MAX6190BESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6190BESA+ 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 MAX6190BESA+ reliable?
The price and inventory of MAX6190BESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6190BESA+ is usually 5 days.
3.What payment methods are accepted for MAX6190BESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6190BESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6190BESA+?
MAX6190BESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6190BESA+ 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 MAX6190BESA+?
For technical support, including MAX6190BESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6190BESA+ requirements.
6.How does Aetrix verify that MAX6190BESA+ is sourced from the original manufacturer or authorized distributors?
All MAX6190BESA+ 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 MAX6190BESA+ meets industry standards.
7.What is the process for return or replacement of MAX6190BESA+?
All MAX6190BESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6190BESA+, 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 MAX6190BESA+ part is unused and in its original packaging.
Return procedure for MAX6190BESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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