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Analog Devices Inc. ADR3625BRMZ-R7
- Part No.:
- ADR3625BRMZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADR3625BRMZ-R7.pdf
- Description:
- IC VREF SERIES 2.5V 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,556
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Product details
Overview
ADR3625BRMZ-R7 from Analog Devices is a precision micropower voltage reference IC delivering 2.500 V ±0.04% initial accuracy, 3 ppm/°C max temperature coefficient (B grade), and 70 mA sourcing output current in an 8-lead MSOP package. It operates from −40°C to +125°C with 0.25 V dropout at 10 mA and supports high-accuracy analog signal chains in portable instrumentation and remote sensors.
For engineers reviewing the ADR3625BRMZ-R7 datasheet, ADR3625BRMZ-R7 pinout, ADR3625BRMZ-R7 application, or ADR3625BRMZ-R7 equivalent, key selection criteria include guaranteed B-grade TC (3 ppm/°C), low 65 µA quiescent current, 3 ppm p-p (0.1–10 Hz) output noise, 0.1 µF minimum load capacitance requirement, and ENABLE-controlled shutdown with 1.5 µA leakage.
Technical Context
The ADR3625BRMZ-R7 uses Analog Devices' proprietary DigiTrim® technology for production trimming of output voltage and temperature coefficient, enabling tight initial accuracy and ultra-low thermal hysteresis (7 ppm). Its architecture integrates curvature-corrected bandgap core, low-noise design, and internal current-limit/thermal-shutdown protection.
It features dual-sense topology (VOUT FORCE/VOUT SENSE and GND FORCE/GND SENSE) for Kelvin sensing, minimizing errors from PCB trace resistance. The ENABLE pin provides logic-compatible (1.17 V high threshold) on/off control, supporting power-gated systems requiring low standby current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V ±0.04% (B grade) - enables 16-bit+ ADC/DAC biasing without calibration. |
| Temp Coefficient | 3 ppm/°C max (B grade) - ensures ≤75 ppm total drift over −40°C to +125°C span. |
| Output Current | 70 mA sourcing / 20 mA sinking - drives multiple op-amps, ADC references, or DACs directly. |
| Quiescent Current | 65 µA typical - supports battery-powered devices with multi-year runtime. |
| Noise (0.1–10 Hz) | 3 ppm p-p (≈7.5 µV p-p) - preserves SNR in precision weigh scales and medical front-ends. |
| Dropout Voltage | 0.25 V at 10 mA - allows operation from 2.75 V supply while maintaining regulation. |
| Enable Threshold | VENH = 1.17 V - compatible with 1.8 V logic without level shifting. |
| Load Capacitance | 0.1 µF to 10 µF - accommodates ceramic or tantalum output caps for stability across layouts. |
Pinout & Package
ADR3625BRMZ-R7 is housed in an 8-lead MSOP (RM-8) package with exposed pad for thermal performance (θJA = 132.5°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - ENABLE | Digital enable input | Active-high logic control; pulls device into 1.5 µA shutdown when ≤0.63 V. |
| 2 - VIN | Power input | Accepts 2.75 V to 16 V; dropout as low as 0.25 V enables single-cell Li-ion compatibility. |
| 3 - GND FORCE | Power ground return | Carries full load current; connects to PCB ground plane for low-impedance return path. |
| 4 - GND SENSE | Sense ground reference | Connects directly to load ground to eliminate IR drop error in high-precision circuits. |
| 5 - GND | Ground tie | Internally tied to GND FORCE; must be connected to same node for proper Kelvin sensing. |
| 6 - VOUT FORCE | Output drive terminal | Delivers regulated 2.500 V; sources up to 70 mA with current-limit protection. |
| 7 - VOUT SENSE | Output voltage sense | Connects directly to load's reference input to compensate for trace resistance voltage drop. |
| 8 - GND | Ground tie | Internally tied to GND FORCE; completes Kelvin sensing loop with Pin 4 and Pin 5. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-sense Kelvin topology | Separate FORCE/SENSE pins for VOUT and GND eliminate layout-induced errors up to 100 mΩ trace resistance. |
| B-grade temperature stability | 3 ppm/°C max TC + 7 ppm thermal hysteresis ensures <100 ppm total error over full industrial temperature cycle. |
| Low-noise micropower operation | 3 ppm p-p (0.1–10 Hz) noise at 65 µA IQ enables high-resolution data acquisition without external filtering. |
| High-current output capability | 70 mA sourcing supports direct driving of SAR ADC references, op-amp bias networks, and multi-channel DACs. |
| Robust protection architecture | Integrated 90 mA short-circuit limit and 178°C thermal shutdown prevent damage during fault conditions. |
| Reflow-stable performance | ≤0.06% solder heat resistance shift after JEDEC-standard reflow ensures post-assembly accuracy retention. |
Applications
| Portable Instrumentation | Process Transmitters |
|---|---|
|
Use Scenario: Handheld multimeters and battery-powered calibrators requiring stable reference over extended field use. IC Role / Device Role / Timing Role: Primary voltage reference for 24-bit sigma-delta ADCs and precision DACs. Use Value: 3 ppm/°C TC and 160 ppm long-term drift (3500 hr) maintain calibration validity between annual service intervals. |
Use Scenario: 4–20 mA loop-powered transmitters in oil/gas and chemical plants operating at −40°C to +85°C. IC Role / Device Role / Timing Role: Excitation source for RTD/thermocouple signal conditioning and ADC reference. Use Value: 70 mA sourcing drives both sensor excitation and internal circuitry from single 3.3 V rail with no external LDO. |
| Remote Sensors | Medical Instrumentation |
|
Use Scenario: Wireless environmental monitors deployed in uncontrolled outdoor enclosures. IC Role / Device Role / Timing Role: Reference for low-power SAR ADC sampling temperature/humidity sensors. Use Value: 65 µA IQ and 1.5 µA shutdown current extend coin-cell life beyond 5 years in sleep-wake cycles. |
Use Scenario: Portable ECG and patient monitors needing FDA-compliant baseline stability and low noise. IC Role / Device Role / Timing Role: Reference for analog front-end gain stages and 16-bit ADC conversion. Use Value: 3 ppm p-p (0.1–10 Hz) noise prevents baseline wander in sub-µV biopotential measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3425BRMZ-R7 | Same 2.5 V output, but higher 10 ppm/°C TC (A grade only); 50 mA max sourcing; no ENABLE pin. | Lacks shutdown control and Kelvin sensing; suitable only for non-critical, fixed-supply applications. | Choose ADR3425BRMZ-R7 only if cost sensitivity outweighs need for B-grade stability and ENABLE functionality. |
| REF5025AIDR | 2.5 V output, 3 ppm/°C TC, but 100 µA IQ; no ENABLE; SOIC-8 package (larger footprint, higher θJA). | Higher quiescent current limits battery life; SOIC-8 increases board area vs. MSOP-8. | Choose REF5025AIDR only if legacy SOIC-8 compatibility is mandatory and 35 µA higher IQ is acceptable. |
Compared with ADR3625BRMZ-R7, ADR3425BRMZ-R7 trades B-grade TC and ENABLE for lower cost, while REF5025AIDR offers identical TC but sacrifices micropower operation and compact MSOP packaging-making ADR3625BRMZ-R7 optimal for space-constrained, battery-powered, high-accuracy systems requiring active power management.
Availability
ADR3625BRMZ-R7 is available at Aetrix Electronics and suitable for portable instrumentation, process transmitters, and remote sensors requiring stable component supply with guaranteed B-grade specifications and full production traceability.
Supply support for ADR3625BRMZ-R7 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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The ADR36xx family was designed specifically for high-accuracy, low-power, high-output-current voltage reference applications where traditional references lack drive capability or stability-enabling replacement of LDO regulators in precision analog signal chains.
FAQ
What is the guaranteed initial accuracy of ADR3625BRMZ-R7 over temperature?
The ADR3625BRMZ-R7 is specified as B grade, guaranteeing ±0.04% initial output voltage error at 25°C and a maximum temperature coefficient of 3 ppm/°C over −40°C to +125°C. This ensures total output error remains within ±0.075% across its full operating range, verified per the box method in the datasheet.
Can ADR3625BRMZ-R7 drive a 12-bit DAC requiring 5 mA load current?
Yes, the ADR3625BRMZ-R7 can easily drive a 12-bit DAC with 5 mA load current: it delivers 70 mA sourcing capacity with <5 ppm/mA load regulation (typical), ensuring output voltage deviation stays below 25 µV - well within the 1.22 mV LSB of a 5 V full-scale 12-bit DAC.
Does ADR3625BRMZ-R7 require external capacitors for stability?
Yes, ADR3625BRMZ-R7 requires a minimum 0.1 µF ceramic capacitor on the VOUT SENSE node for stability, as confirmed in the datasheet's Applications Information section. An additional 1–10 µF bulk capacitor on VIN is recommended for transient suppression, especially in noisy supply environments.
How does the ENABLE pin function in ADR3625BRMZ-R7?
The ENABLE pin on ADR3625BRMZ-R7 is a logic-compatible input with 1.17 V high threshold and 0.63 V low threshold. When pulled ≥1.17 V, the device operates normally (65 µA IQ); when ≤0.63 V, it enters shutdown mode drawing only 1.5 µA. No external pull-up is required due to internal biasing.
Is ADR3625BRMZ-R7 suitable for automotive under-hood applications?
ADR3625BRMZ-R7 is qualified for −40°C to +125°C operation and meets industrial reliability standards, but it is not AEC-Q100 qualified. For non-safety-critical under-hood subsystems (e.g., cabin sensor interfaces), it may be used with system-level validation; for ASIL-B/C applications, an AEC-Q100 qualified alternative is required.
ADR3625BRMZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 70 mA
- Tolerance:
- ±0.04%
- Temperature Coefficient:
- 3ppm/°C
- Noise - 0.1Hz to 10Hz:
- 3ppmp-p
- Noise - 10Hz to 10kHz:
- 4ppmrms
- Voltage - Input:
- 3V ~ 16V
- Current - Supply:
- 75µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
ADR3625BRMZ-R7 FAQ
1.How can I place an order for ADR3625BRMZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR3625BRMZ-R7 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 ADR3625BRMZ-R7 reliable?
The price and inventory of ADR3625BRMZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR3625BRMZ-R7 is usually 5 days.
3.What payment methods are accepted for ADR3625BRMZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR3625BRMZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR3625BRMZ-R7?
ADR3625BRMZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR3625BRMZ-R7 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 ADR3625BRMZ-R7?
For technical support, including ADR3625BRMZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR3625BRMZ-R7 requirements.
6.How does Aetrix verify that ADR3625BRMZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADR3625BRMZ-R7 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 ADR3625BRMZ-R7 meets industry standards.
7.What is the process for return or replacement of ADR3625BRMZ-R7?
All ADR3625BRMZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADR3625BRMZ-R7, 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 ADR3625BRMZ-R7 part is unused and in its original packaging.
Return procedure for ADR3625BRMZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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