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Analog Devices Inc. AD7476AWYRMZ
- Part No.:
- AD7476AWYRMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7476AWYRMZ.pdf
- Description:
- IC ADC 12BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,049
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Product details
Overview
AD7476AWYRMZ from Analog Devices is a 12-bit, single-channel, successive-approximation ADC in a 6-lead SC70 package, operating from 2.35 V to 5.25 V with 1 MSPS throughput, 71 dB SNR at 100 kHz input, and no pipeline delay-designed for high-speed battery-powered data acquisition in portable medical instruments and optical sensor interfaces.
For engineers reviewing the AD7476AWYRMZ datasheet, AD7476AWYRMZ pinout, AD7476AWYRMZ application, or AD7476AWYRMZ equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed automotive-grade (–40°C to +125°C) operation, and two rigorously cross-checked alternative parts for system-level selection.
Technical Context
The AD7476AWYRMZ implements a standard SAR architecture with track-and-hold sampling controlled by CS falling edge, enabling precise timing control without latency. Its internal VDD-referenced conversion eliminates external reference components while supporting 0 V to VDD analog input range.
Conversion is fully synchronous to SCLK, requiring exactly 16 clock cycles per sample; serial output delivers 12-bit MSB-first data preceded by four leading zeros. Power-down mode reduces current to 1 µA max, and full-power operation consumes only 3.5 mA at 5 V/1 MSPS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit-guarantees monotonic transfer function with no missing codes up to full scale. |
| Throughput Rate | 1 MSPS-supports real-time sampling of signals up to 500 kHz Nyquist bandwidth. |
| SNR @ 100 kHz | 71 dB min (VDD = 2.35–3.6 V)-enables accurate digitization of low-amplitude RF or sensor signals. |
| Supply Range | 2.35 V to 5.25 V-allows direct interface with Li-ion, 3.3 V, and 5 V logic domains without level-shifting. |
| Power Dissipation | 5.1 mW max at 5 V/1 MSPS-reduces thermal load in space-constrained portable systems. |
| Operating Temperature | –40°C to +125°C (Y grade)-qualified for under-hood automotive and industrial control environments. |
| Aperture Jitter | 30 ps typ-limits sampling uncertainty to <0.02 LSB at 100 kHz input, preserving dynamic accuracy. |
Pinout & Package
AD7476AWYRMZ is housed in a 6-lead SC70 package (2.2 mm × 1.35 mm × 0.95 mm), optimized for ultra-compact PCB layouts in handheld and wearable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VDD | Power supply input | Single 2.35–5.25 V rail powers analog core, digital interface, and internal reference-no external reference required. |
| 2: GND | Analog ground reference | Common return for all analog circuitry; must be connected to low-impedance system ground plane to minimize noise coupling. |
| 3: VIN | Analog input channel | Single-ended input with 0 V to VDD range and 20 pF input capacitance-requires ≤130 Ω source impedance for full AC performance. |
| 4: CS | Chip select / conversion trigger | Falling edge initiates sampling and conversion; also frames serial data-enables precise multi-device synchronization. |
| 5: SDATA | Serial data output | Three-state CMOS output delivering 12-bit result MSB-first with four leading zeros-compatible with SPI, QSPI, and DSP interfaces. |
| 6: SCLK | Serial clock input | Drives both data transfer and internal conversion timing; supports up to 20 MHz clock rate for minimum 800 ns conversion time. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True single-cycle conversion with deterministic 16-SCLK timing-eliminates latency-induced control loop errors in closed-loop systems. |
| VDD-referenced internal reference | Removes need for external voltage reference IC or resistor divider-reduces BOM count and layout area in size-sensitive designs. |
| 1 µA max standby current | Enables microamp-level system sleep modes; power-down recovery time is only 1 µs-ideal for duty-cycled sensor nodes. |
| SC70 footprint | Smallest available package for 12-bit 1 MSPS ADC-fits within 3 mm² board area, enabling integration into PDA and hearing aid form factors. |
| SPI/QSPI/MICROWIRE compatibility | Direct connection to common microcontrollers (e.g., STM32, TMS320) without protocol translation-reduces firmware development effort. |
Applications
| Portable Medical Sensors | Automotive Cabin Monitoring |
|---|---|
Use Scenario: Digitizing analog outputs from ECG electrodes or pulse oximeter photodiodes in battery-powered handheld diagnostics units. IC Role / Device Role / Timing Role: High-speed, low-noise front-end ADC capturing biometric waveforms with minimal power draw between measurements. Use Value: 71 dB SNR preserves small-signal fidelity; 1 MSPS throughput captures transient cardiac events; SC70 size enables compact probe integration. |
Use Scenario: Sampling cabin temperature, humidity, and CO₂ sensor outputs in automotive HVAC control modules. IC Role / Device Role / Timing Role: Automotive-qualified (Y grade) ADC interfacing with 3.3 V microcontroller over SPI for periodic environmental monitoring. Use Value: –40°C to +125°C operation ensures reliability across engine-off cold soak and under-dash thermal stress; 1 µA standby extends battery backup life. |
| Optical Sensor Interfaces | Industrial Data Loggers |
Use Scenario: Converting analog photocurrent from ambient light or proximity sensors in smart lighting and gesture recognition systems. IC Role / Device Role / Timing Role: Low-input-capacitance (20 pF) ADC minimizing signal distortion from high-impedance photodiode transimpedance amplifiers. Use Value: 13.5 MHz full-power bandwidth supports fast light-pulse detection; VDD-referenced input simplifies analog front-end design. |
Use Scenario: Acquiring voltage, current, and temperature readings in distributed industrial sensor nodes powered by energy harvesting or long-life batteries. IC Role / Device Role / Timing Role: Low-power, high-accuracy ADC performing burst-mode sampling synchronized to wireless transmission intervals. Use Value: 5.1 mW operational power enables >1 year runtime on coin-cell; 12-bit resolution meets IEC 61000-4-30 Class A measurement requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822IDR | 12-bit, 200 kSPS, 2.7–5.25 V supply, MSOP-8 package, external reference required. | Lower speed and larger footprint; lacks automotive qualification and VDD reference. | Select when lower throughput suffices and external reference already exists in design. |
| MAX1116EUT+T | 12-bit, 1 MSPS, 2.7–3.6 V supply only, SC70-6, internal reference, but rated only to +85°C (A grade). | Not qualified for automotive or extended industrial temperature ranges. | Select for cost-sensitive consumer applications where –40°C to +125°C operation is not required. |
Compared with ADS7822IDR and MAX1116EUT+T, AD7476AWYRMZ uniquely combines 1 MSPS speed, SC70 size, VDD-referenced operation, and automotive-grade temperature range-making it the only option meeting all four criteria simultaneously for space-constrained, high-reliability embedded systems.
Availability
AD7476AWYRMZ is available at Aetrix Electronics and suitable for portable medical devices, automotive cabin sensors, optical sensing modules, and industrial data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7476AWYRMZ 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and automotive markets since 1965.
AD7476AWYRMZ belongs to the AD7476A/AD7477A/AD7478A family-engineered to deliver high-speed, low-power, small-footprint SAR ADCs for battery-operated and thermally constrained embedded systems.
FAQ
What is the maximum sampling rate supported by the AD7476AWYRMZ?
The AD7476AWYRMZ supports a maximum throughput rate of 1 MSPS, achieved with a 20 MHz SCLK and 16 serial clock cycles per conversion. This rate is guaranteed across its full operating temperature range (–40°C to +125°C) and supply voltage range (2.35 V to 5.25 V), enabling real-time capture of signals up to 500 kHz without aliasing.
Does the AD7476AWYRMZ require an external voltage reference?
No, the AD7476AWYRMZ uses an internal reference derived from VDD, establishing a 0 V to VDD analog input range. This eliminates the need for external reference components, reducing system cost and PCB area-critical in space-constrained applications like wearables and sensor nodes where AD7476AWYRMZ is commonly deployed.
What is the purpose of the four leading zeros in the AD7476AWYRMZ serial data stream?
The AD7476AWYRMZ outputs four leading zeros before the 12-bit conversion result (MSB first) to maintain consistent frame alignment across the AD7476A/AD7477A/AD7478A family. This allows shared firmware drivers for 8-, 10-, and 12-bit variants, simplifying software maintenance when migrating between resolutions-without modifying bit-shift logic for AD7476AWYRMZ.
How does the AD7476AWYRMZ achieve low power consumption in high-speed operation?
The AD7476AWYRMZ achieves 5.1 mW max power at 5 V/1 MSPS through advanced process optimization and dynamic power gating. Its 1 µA max standby current and 1 µs wake-up time enable aggressive duty cycling-e.g., sampling for 1 µs then sleeping for 999 µs yields average power below 6 µW, extending battery life in AD7476AWYRMZ-based IoT endpoints.
Is the AD7476AWYRMZ pin-compatible with other members of the AD7476A/AD7477A/AD7478A family?
Yes, the AD7476AWYRMZ shares identical 6-lead SC70 pinout and interface timing with AD7477A and AD7478A variants. All three use the same VDD, GND, VIN, CS, SDATA, and SCLK connections and support SPI-compatible serial framing-allowing hardware reuse across resolution grades while adjusting firmware for differing data lengths in AD7476AWYRMZ implementations.
AD7476AWYRMZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI, DSP
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- Supply
- Voltage - Supply, Analog:
- 2.35V ~ 5.25V
- Voltage - Supply, Digital:
- 2.35V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- -
AD7476AWYRMZ FAQ
1.How can I place an order for AD7476AWYRMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7476AWYRMZ 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 AD7476AWYRMZ reliable?
The price and inventory of AD7476AWYRMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7476AWYRMZ is usually 5 days.
3.What payment methods are accepted for AD7476AWYRMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7476AWYRMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7476AWYRMZ?
AD7476AWYRMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7476AWYRMZ 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 AD7476AWYRMZ?
For technical support, including AD7476AWYRMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7476AWYRMZ requirements.
6.How does Aetrix verify that AD7476AWYRMZ is sourced from the original manufacturer or authorized distributors?
All AD7476AWYRMZ 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 AD7476AWYRMZ meets industry standards.
7.What is the process for return or replacement of AD7476AWYRMZ?
All AD7476AWYRMZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7476AWYRMZ, 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 AD7476AWYRMZ part is unused and in its original packaging.
Return procedure for AD7476AWYRMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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