My Inquiry
My Account
Analog Devices Inc. ADR4550CRZ-R7
- Part No.:
- ADR4550CRZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADR4550CRZ-R7.pdf
- Description:
- IC VREF SERIES 0.02% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,572
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADR4550CRZ-R7 from Analog Devices is a precision 5.000 V ultralow-noise voltage reference in an 8-lead SOIC package, rated for −40°C to +125°C operation (B grade), with ±0.02% initial error, 2 ppm/°C temperature coefficient (box method), and 2.8 μV p-p (0.1 Hz to 10 Hz) output noise - deployed in high-resolution ADC biasing and automotive battery monitoring systems.
For engineers reviewing the ADR4550CRZ-R7 datasheet, ADR4550CRZ-R7 pinout, ADR4550CRZ-R7 application, or ADR4550CRZ-R7 equivalent, key selection criteria include guaranteed 5.000 V output accuracy over industrial temperature range, low dropout (300 mV at 2 mA), 950 μA max quiescent current, and SOIC-8 compatibility with standard PCB assembly processes.
Technical Context
The ADR4550CRZ-R7 employs an advanced buried-zener core topology optimized for minimal thermal hysteresis and long-term stability, achieving 8 ppm typical drift at 4500 hours and <±13 ppm output hysteresis across full temperature cycling. Its dual-ground architecture (GND and NIC pins) isolates sensing from force paths to maintain load regulation fidelity under dynamic current conditions.
Designed for high-precision analog signal chains, it delivers 90 dB ripple rejection at 1 kHz and supports up to ±10 mA output current while maintaining sub-ppm/V line regulation and ≤80 ppm/mA load regulation - enabling direct interface with SAR and sigma-delta ADCs without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V ±0.02% (±1 mV) - enables 16-bit+ ADC full-scale accuracy without calibration. |
| Tempco (Box Method) | 2 ppm/°C (−40°C to +125°C, B grade) - ensures ≤±0.25 mV drift over full industrial range. |
| Output Noise (0.1–10 Hz) | 2.8 μV p-p - contributes <0.0001 LSB noise to 24-bit 5 V-range converters. |
| Quiescent Current | 950 μA max - supports battery-powered instrumentation with multi-year runtime. |
| Dropout Voltage | 300 mV at 2 mA load - allows operation from 5.3 V supply, easing LDO selection. |
| Ripple Rejection | 90 dB at 1 kHz - suppresses switching regulator noise coupling into reference path. |
| Long-Term Drift | 51 ppm at 4500 hours - predicts <0.26 mV output shift over 5-year field deployment. |
Pinout & Package
ADR4550CRZ-R7 is housed in an 8-lead SOIC package (JEDEC MS-012AA, 150 mil width) with exposed pad option not specified; thermal resistance θJA = 120°C/W on 2-layer JEDEC board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NIC | Not internally connected - leave unconnected or tie to GND for mechanical stability only. |
| 2 | VIN | Input voltage connection - requires 5.1 V to 15 V supply with ≥100 nF local decoupling. |
| 3 | NIC | Not internally connected - no electrical function; avoid routing signals nearby. |
| 4 | GND | Power ground reference - connect directly to low-impedance system ground plane. |
| 5 | NIC | Not internally connected - electrically isolated; treat as floating copper. |
| 6 | VOUT | Regulated 5.000 V output - route with short, wide trace to ADC reference input. |
| 7 | NIC | Not internally connected - no internal bond wire; do not use for thermal relief. |
| 8 | DNC | Do not connect - internal test node; floating connection prevents parametric shift. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow 0.1–10 Hz noise | 2.8 μV p-p - preserves ENOB in precision data acquisition front-ends. |
| B-grade tempco performance | 2 ppm/°C box-method - eliminates need for software temperature compensation in embedded systems. |
| Low dropout at full load | 300 mV at 2 mA - enables single-supply designs using 5.5 V rails without headroom penalty. |
| High PSRR | 90 dB at 1 kHz - rejects noise from shared DC/DC converters in mixed-signal PCBs. |
| Robust long-term stability | 51 ppm drift at 4500 hours - meets automotive and industrial field-reliability requirements. |
Applications
| Precision Data Acquisition | Automotive Battery Monitoring |
|---|---|
|
Use Scenario: 24-bit isolated current/voltage measurement in programmable logic controllers. IC Role / Device Role / Timing Role: Primary voltage reference for delta-sigma ADC reference input, providing stable 5.000 V基准. Use Value: Enables ±0.002% full-scale accuracy over −40°C to +85°C ambient without recalibration. |
Use Scenario: High-side cell voltage monitoring in 12 V lead-acid and 48 V mild-hybrid battery packs. IC Role / Device Role / Timing Role: Reference source for precision ADC measuring individual cell voltages with 1 mV resolution. Use Value: Maintains 5.000 V output accuracy despite engine cranking transients and thermal cycling. |
| Medical Instrumentation | Industrial Process Control |
|
Use Scenario: Portable ECG front-end requiring sub-microvolt baseline stability. IC Role / Device Role / Timing Role: Low-noise reference for PGA and ADC stages in analog signal chain. Use Value: 2.8 μV p-p noise ensures ECG waveform integrity without digital filtering artifacts. |
Use Scenario: 4–20 mA transmitter with HART modulation requiring stable loop power and sensing. IC Role / Device Role / Timing Role: Precision reference for DAC output scaling and sensor excitation circuits. Use Value: 2 ppm/°C tempco prevents zero-drift errors in temperature-uncompensated pressure transmitters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5050IDR | 5.0 V output, 3 ppm/°C max tempco (−40°C to +125°C), 3.8 μV p-p noise, SOIC-8. | Higher noise and looser tempco - suitable where cost sensitivity outweighs 16-bit+ ADC needs. | Prefer ADR4550CRZ-R7 when sub-3 μV p-p noise and 2 ppm/°C stability are required. |
| LT6655IMS5-5#TRPBF | 5.0 V output, 3 ppm/°C max tempco, 2.5 μV p-p noise, SOT-23-5; 10 mA sink capability. | Smaller footprint but limited to 5 mA source; no NIC/DNC pin isolation - less robust against layout-induced errors. | Choose ADR4550CRZ-R7 for SOIC-8 compatibility, superior long-term drift (51 vs. 70 ppm), and dedicated GND/VOUT separation. |
Compared with REF5050IDR and LT6655IMS5-5#TRPBF, ADR4550CRZ-R7 delivers the lowest combined noise-tempco-drift profile in SOIC-8, making it optimal for metrology-grade systems where reference-induced error must remain below 0.005% of full scale.
Availability
ADR4550CRZ-R7 is available at Aetrix Electronics and suitable for precision data acquisition systems, automotive battery monitoring modules, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADR4550CRZ-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 since 1965.
The ADR45xx family was engineered specifically for metrology-grade voltage referencing in high-resolution data converters and safety-critical sensor interfaces, emphasizing ultralow noise, minimal thermal hysteresis, and proven long-term reliability.
FAQ
What is the operating temperature range for ADR4550CRZ-R7?
The ADR4550CRZ-R7 is specified for −40°C to +125°C operation per its B-grade rating. This range is validated across all key parameters including initial error, temperature coefficient, load regulation, and long-term drift - ensuring reliable performance in under-hood automotive and industrial control environments where ambient extremes occur.
Does ADR4550CRZ-R7 require external capacitors for stability?
Yes, ADR4550CRZ-R7 requires a minimum 0.1 µF ceramic capacitor on VOUT and recommends 0.1 µF on VIN for stability and noise suppression. The datasheet specifies stable operation with load capacitance from 0.1 µF to 100 µF; larger values improve low-frequency noise rejection but increase turn-on settling time to 160 µs.
Can ADR4550CRZ-R7 drive an ADC reference input directly?
Yes, ADR4550CRZ-R7 can directly drive most precision ADC reference inputs, delivering ±10 mA output current and maintaining 2.8 μV p-p noise. Its low output impedance (<1 Ω at DC) and 90 dB PSRR ensure minimal interaction with switched-capacitor sampling networks - verified in typical applications with AD7768 and ADS127L01.
What is the meaning of NIC and DNC pins on ADR4550CRZ-R7?
On ADR4550CRZ-R7, pins 1, 3, 5, and 7 are labeled NIC (Not Internally Connected), meaning they have no internal bond wires and may be left floating or tied to GND for mechanical reinforcement. Pin 8 is DNC (Do Not Connect) - an internal test node that must remain unconnected to prevent parametric shifts or reliability risks.
Is ADR4550CRZ-R7 qualified for automotive applications?
No, ADR4550CRZ-R7 is not AEC-Q100 qualified. While it operates across −40°C to +125°C and shares design heritage with automotive-grade variants (e.g., ADR4525W), the ADR4550CRZ-R7 part number itself is designated for industrial and medical use. For automotive battery monitoring, Analog Devices offers ADR4525W in SOIC-8 with full AEC-Q100 Grade 1 qualification.
ADR4550CRZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.02%
- Temperature Coefficient:
- 1ppm/°C
- Noise - 0.1Hz to 10Hz:
- 2.8µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 3V ~ 15V
- Current - Supply:
- 950µA
- Current - Cathode:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADR4550CRZ-R7 FAQ
1.How can I place an order for ADR4550CRZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR4550CRZ-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 ADR4550CRZ-R7 reliable?
The price and inventory of ADR4550CRZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR4550CRZ-R7 is usually 5 days.
3.What payment methods are accepted for ADR4550CRZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR4550CRZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR4550CRZ-R7?
ADR4550CRZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR4550CRZ-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 ADR4550CRZ-R7?
For technical support, including ADR4550CRZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR4550CRZ-R7 requirements.
6.How does Aetrix verify that ADR4550CRZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADR4550CRZ-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 ADR4550CRZ-R7 meets industry standards.
7.What is the process for return or replacement of ADR4550CRZ-R7?
All ADR4550CRZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADR4550CRZ-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 ADR4550CRZ-R7 part is unused and in its original packaging.
Return procedure for ADR4550CRZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADR4550CRZ-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…
