My Inquiry
My Account
Analog Devices Inc. ADR4525DEZ-R7
- Part No.:
- ADR4525DEZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-CLCC
- Datasheet:
-
ADR4525DEZ-R7.pdf
- Description:
- IC VREF SERIES 0.02% 8LCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,589
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADR4525DEZ-R7 from Analog Devices is an ultralow noise, high accuracy voltage reference IC delivering a precise 2.500 V output with ±0.02% initial error (B/C/D grade), 0.8 ppm/°C max temperature coefficient (D grade, 0°C to 70°C), and 1.25 μV p-p (0.1 Hz to 10 Hz) output noise - deployed in precision ADC biasing, battery monitoring, and medical instrumentation.
For engineers reviewing the ADR4525DEZ-R7 datasheet, ADR4525DEZ-R7 pinout, ADR4525DEZ-R7 application, or ADR4525DEZ-R7 equivalent, this page delivers verified electrical specs, SOIC-8 package details, real-world use cases, and validated alternative options for high-stability analog signal chains.
Technical Context
The ADR4525DEZ-R7 uses an advanced core topology optimized for minimal thermally induced hysteresis and long-term drift (8 ppm typical at 4500 hours), enabling stable reference performance across temperature cycling and extended operation. Its low dropout voltage (500 mV at 2 mA) and 950 μA max quiescent current support portable and low-power industrial systems.
Designed for precision data acquisition, it features dual ground paths (GNDSENSE and GNDFORCE) and force-sense outputs (VOUTFORCE/VOUTSENSE) in LCC-8 packaging to reject PCB trace resistance and load-induced errors - critical for 24-bit SAR and delta-sigma converter interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V ±0.02% (B/C/D grade) - enables direct interface with 2.5 V ADC references without scaling. |
| Tempco (D grade) | 0.8 ppm/°C (box method, 0°C to 70°C) - ensures ≤1.6 ppm total drift over commercial temperature range. |
| Output Noise | 1.25 μV p-p (0.1 Hz to 10 Hz) - supports <20-bit ENOB in high-resolution data converters. |
| Quiescent Current | 950 μA max - allows operation from coin-cell or energy-harvesting supplies in portable sensors. |
| Dropout Voltage | 500 mV at 2 mA load - permits use with 3.0 V input rails while maintaining regulation. |
| Ripple Rejection | 90 dB at 1 kHz - suppresses switching regulator noise coupling into precision analog stages. |
| Long-Term Drift | 8 ppm typical at 4500 hours - reduces calibration frequency in field-deployed test equipment. |
Pinout & Package
ADR4525DEZ-R7 is supplied in an 8-lead LCC (Leadless Chip Carrier) package, RoHS-compliant and moisture sensitivity level MSL-1. The package supports reflow soldering and provides enhanced thermal performance (θJA = 120°C/W on 2-layer JEDEC board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NIC | Not internally connected - left floating or grounded per layout best practice; no functional role. |
| 2 | VIN | Main input supply connection - accepts 3 V to 15 V; requires local 0.1 µF ceramic decoupling. |
| 3 | GNDFORCE | Power ground return path - connects to system power ground plane to minimize IR drop. |
| 4 | GNDSENSE | Sense ground - routed directly to load ground to eliminate PCB trace resistance error in feedback loop. |
| 5 | NIC | Not internally connected - no electrical function; may be used as thermal pad anchor. |
| 6 | VOUTSENSE | Reference output sense node - connected directly to ADC reference input to cancel trace resistance error. |
| 7 | VOUTFORCE | Reference output drive node - supplies current to load; paired with VOUTSENSE for Kelvin sensing. |
| 8 | DNC | Do not connect - electrically isolated; must remain unconnected to avoid malfunction. |
Key Features
| Feature | Design Value |
|---|---|
| Kelvin force-sense output architecture | Eliminates voltage error from PCB trace resistance between reference and load, enabling true 2.5 V delivery at ADC input. |
| Ultralow 0.1 Hz–10 Hz noise | 1.25 μV p-p ensures <0.1 LSB error in 24-bit, 1 MSPS SAR ADCs operating at full scale. |
| 0.8 ppm/°C tempco (D grade) | Meets stringent stability requirements for portable calibration standards and handheld multimeters. |
| 8 ppm long-term drift (4500 hrs) | Reduces need for periodic recalibration in automated test equipment and metrology-grade instruments. |
| AEC-Q100 qualified variant available | ADR4525W supports automotive battery monitoring and ADAS sensor signal conditioning with validated reliability. |
Applications
| High-Resolution Data Acquisition | Automotive Battery Monitoring |
|---|---|
|
Use Scenario: 24-bit delta-sigma ADC digitizing strain gauge or RTD signals in industrial PLC modules. IC Role / Device Role / Timing Role: Precision voltage reference providing stable 2.500 V excitation and ADC reference voltage. Use Value: 0.8 ppm/°C tempco and 1.25 μV p-p noise maintain <±1 LSB integral nonlinearity over temperature and time. |
Use Scenario: Monitoring individual cell voltages in 12S Li-ion battery packs for EV BMS. IC Role / Device Role / Timing Role: Reference source for multiplexed 16-bit SAR ADC measuring 3.0–4.2 V cell ranges. Use Value: Force-sense outputs reject PCB resistance error, ensuring <1 mV absolute measurement accuracy per cell. |
| Portable Medical Instrumentation | Calibration Standards Equipment |
|
Use Scenario: Handheld ECG front-end with low-noise amplification and 20-bit ADC sampling. IC Role / Device Role / Timing Role: Low-drift, low-noise reference for ADC and DAC biasing in analog signal chain. Use Value: 950 μA quiescent current and 500 mV dropout enable operation from single 3.3 V LiPo cell for >8-hour runtime. |
Use Scenario: Benchtop calibrator generating programmable DC voltage outputs traceable to national standards. IC Role / Device Role / Timing Role: Primary reference element in closed-loop DAC correction circuitry. Use Value: 8 ppm long-term drift at 4500 hours extends recalibration interval to ≥12 months in metrology labs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR441ARMZ-R7 | 2.5 V output, 1.5 ppm/°C max tempco (B grade), 2.2 μV p-p noise, SOIC-8 only. | Lacks force-sense outputs and LCC package; higher noise limits use in >20-bit systems. | Select when cost sensitivity outweighs ultra-low noise or Kelvin sensing needs. |
| REF5025IDR | 2.5 V output, 3 ppm/°C max tempco (A grade), 1.6 μV p-p noise, SOIC-8, 1.2 mA IQ. | No force-sense architecture; higher quiescent current limits battery-powered use. | Prefer for TI-based designs where ecosystem compatibility and SPICE model availability are prioritized. |
Compared with ADR4525DEZ-R7, ADR441ARMZ-R7 trades noise and tempco performance for lower cost and broader distribution, while REF5025IDR offers tighter integration with TI's precision amplifier portfolio but lacks the Kelvin sensing capability essential for sub-millivolt accuracy in production test systems.
Availability
ADR4525DEZ-R7 is available at Aetrix Electronics and suitable for precision data acquisition systems, automotive battery monitoring, and portable medical instrumentation requiring stable component supply, long-term calibration integrity, and AEC-Q100-aligned reliability assurance.
Supply support for ADR4525DEZ-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, communications, automotive, and healthcare markets since 1965.
The ADR45xx family was engineered specifically for metrology-grade voltage reference applications demanding ultralow noise, sub-1 ppm/°C stability, and force-sense accuracy - targeting high-end data converters and calibration infrastructure.
FAQ
What is the maximum operating temperature range for ADR4525DEZ-R7?
The ADR4525DEZ-R7 is rated for 0°C to +70°C operation (D grade). It is not specified for −40°C to +125°C operation - that range applies only to A and B grade variants such as ADR4525BRZ. Using ADR4525DEZ-R7 outside its 0°C to 70°C range may result in increased tempco and long-term drift beyond datasheet limits.
Does ADR4525DEZ-R7 support force-sense connections, and how are they implemented?
Yes, ADR4525DEZ-R7 implements force-sense via dedicated pins: VOUTFORCE (Pin 7) delivers regulated current to the load, while VOUTSENSE (Pin 6) provides a high-impedance feedback path directly to the load's reference input. GNDSENSE (Pin 4) completes the Kelvin loop by returning to the load's ground node - collectively eliminating PCB trace resistance error.
What is the typical long-term drift specification for ADR4525DEZ-R7?
ADR4525DEZ-R7 exhibits 8 ppm typical long-term drift after 4500 hours of operation at 25°C. This value is measured under controlled conditions and reflects the device's inherent stability - significantly lower than the 51 ppm typical observed in A/B/C grade variants of the same family.
Can ADR4525DEZ-R7 be used with a 3.0 V supply rail?
Yes, ADR4525DEZ-R7 operates with a minimum input voltage of 3.0 V. Its dropout voltage is 500 mV at 2 mA load, meaning it maintains regulation down to 3.0 V input when delivering 2.5 V output - making it compatible with standard 3.3 V or 3.0 V system rails with appropriate margin.
Is ADR4525DEZ-R7 pin-compatible with other members of the ADR45xx family?
No, ADR4525DEZ-R7 is not pin-compatible with SOIC-8 variants like ADR4525BRZ. It uses an 8-lead LCC package with distinct pin functions including GNDFORCE, GNDSENSE, VOUTFORCE, and VOUTSENSE - requiring unique PCB layout and routing versus SOIC-packaged versions.
ADR4525DEZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-CLCC
- 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:
- 10 mA
- Tolerance:
- ±0.02%
- Temperature Coefficient:
- 0.8ppm/°C
- Noise - 0.1Hz to 10Hz:
- 1.25µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 3V ~ 15V
- Current - Supply:
- 950µA
- Current - Cathode:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-CLCC (5x5)
ADR4525DEZ-R7 FAQ
1.How can I place an order for ADR4525DEZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR4525DEZ-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 ADR4525DEZ-R7 reliable?
The price and inventory of ADR4525DEZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR4525DEZ-R7 is usually 5 days.
3.What payment methods are accepted for ADR4525DEZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR4525DEZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR4525DEZ-R7?
ADR4525DEZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR4525DEZ-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 ADR4525DEZ-R7?
For technical support, including ADR4525DEZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR4525DEZ-R7 requirements.
6.How does Aetrix verify that ADR4525DEZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADR4525DEZ-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 ADR4525DEZ-R7 meets industry standards.
7.What is the process for return or replacement of ADR4525DEZ-R7?
All ADR4525DEZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADR4525DEZ-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 ADR4525DEZ-R7 part is unused and in its original packaging.
Return procedure for ADR4525DEZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADR4525DEZ-R7 Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
