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Analog Devices Inc. AD7476AYRMZ
- Part No.:
- AD7476AYRMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7476AYRMZ.pdf
- Description:
- IC ADC 12BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,696
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Product details
Overview
AD7476AYRMZ from Analog Devices is a 12-bit, 1 MSPS successive-approximation ADC in a 6-lead SC70 package, operating from 2.35 V to 5.25 V supply. It delivers 71 dB SNR at 100 kHz input, features no pipeline delay, and uses internal VDD-referenced conversion for 0 V to VDD analog input range-ideal for battery-powered data acquisition and portable medical instrumentation.
For engineers reviewing the AD7476AYRMZ datasheet, AD7476AYRMZ pinout, AD7476AYRMZ application, or AD7476AYRMZ equivalent, key selection factors include its 12-bit resolution with ±1.5 LSB INL (Y grade), 800 ns max conversion time, SPI/QSPI/MICROWIRE-compatible serial interface, and automotive-qualified –40°C to +125°C operation.
Technical Context
The AD7476AYRMZ implements a standard SAR architecture with track-and-hold amplifier capable of >13 MHz full-power bandwidth and 30 ps typical aperture jitter. Conversion is initiated on the falling edge of CS, with sampling synchronized to that edge and no latency between command and result.
It uses VDD as its reference source, eliminating external reference components and enabling rail-to-rail input range (0 V to VDD). Serial communication requires 16 SCLK cycles per conversion, with data output MSB-first and four leading zeros-ensuring deterministic timing and compatibility with common microcontroller SPI peripherals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - supports precise measurement of small signal variations in sensor and instrumentation systems |
| Throughput Rate | 1 MSPS - enables real-time sampling of fast transients in motor control or optical sensing applications |
| SNR @ 100 kHz | 71 dB min - ensures high-fidelity digitization of medium-frequency analog signals with low noise floor |
| INL (Y Grade) | ±1.5 LSB max - guarantees monotonicity and linearity critical for closed-loop control feedback paths |
| Supply Range | 2.35 V to 5.25 V - allows direct interfacing with Li-ion, 3.3 V, and 5 V logic domains without level-shifting |
| Power @ 1 MSPS | 5.1 mW max at 5 V - enables ultra-low-power operation in always-on monitoring systems |
| Standby Current | 1 µA max - supports rapid wake-up from deep sleep while minimizing system quiescent power |
Pinout & Package
AD7476AYRMZ is housed in a 6-lead SC70 package (2.0 mm × 1.25 mm, 0.9 mm height), optimized for space-constrained portable designs. The package is RoHS-compliant and qualified for automotive temperature range (–40°C to +125°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VDD | Power supply input | Provides single-supply bias for analog and digital sections; also serves as internal reference source |
| 2: GND | Analog ground reference | Common return path for analog input and internal circuitry; must be isolated from noisy digital ground |
| 3: VIN | Analog input channel | Single-ended input with 0 V to VDD range; 20 pF input capacitance requires careful driver impedance matching |
| 4: CS | Chip select / conversion trigger | Active-low signal that initiates sampling on falling edge and frames serial data transmission |
| 5: SDATA | Serial data output | Three-state output delivering 12-bit result MSB-first with four leading zeros; compatible with SPI read protocols |
| 6: SCLK | Serial clock input | Controls both data transfer timing and internal conversion clock; supports up to 20 MHz frequency |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Enables deterministic, one-shot conversion with immediate result availability-critical for time-critical control loops |
| VDD-referenced architecture | Eliminates need for external reference IC or resistor divider, reducing BOM count and layout area in compact systems |
| Automotive qualification | Rated for –40°C to +125°C operation and qualified per AEC-Q100, supporting under-hood and infotainment applications |
| Flexible serial interface | Native SPI/QSPI/MICROWIRE/DSP compatibility simplifies integration with ARM Cortex-M, C2000, and SHARC processors |
| Low acquisition time | 250 ns max track-and-hold acquisition enables use with moderate-output-impedance sensors without external buffering |
Applications
| Battery-Powered Data Loggers | Portable Medical Sensors |
|---|---|
Use Scenario: Continuous voltage/current monitoring in handheld ECG or pulse oximeter units powered by coin-cell or LiPo batteries. IC Role / Device Role / Timing Role: Primary analog front-end digitizer acquiring biopotential signals at 1 MSPS with minimal power overhead. Use Value: 5.1 mW max power at 5 V and 1 µA standby current extend battery life while maintaining diagnostic-grade 12-bit resolution. |
Use Scenario: Digitizing amplified sensor outputs (e.g., thermistor, pressure transducer) in FDA-cleared wearable monitors. IC Role / Device Role / Timing Role: High-accuracy, low-noise ADC interfaced directly to op-amp output with rail-to-rail input range. Use Value: 71 dB SNR and ±1.5 LSB INL ensure clinical-grade signal fidelity; SC70 footprint saves PCB area in miniaturized enclosures. |
| Industrial Motor Control Feedback | Optical Sensor Signal Conditioning |
Use Scenario: Sampling current-sense shunt voltages or encoder signals in compact BLDC motor drives deployed in factory automation. IC Role / Device Role / Timing Role: Real-time current feedback ADC synchronized to PWM cycles via CS-triggered sampling. Use Value: No pipeline delay and 800 ns conversion time allow tight loop timing; –40°C to +125°C rating supports harsh ambient conditions. |
Use Scenario: Converting photodiode or phototransistor outputs in laser distance meters or barcode scanners. IC Role / Device Role / Timing Role: High-speed digitizer capturing fast optical pulses with wide input bandwidth (13.5 MHz full-power). Use Value: 13.5 MHz full-power bandwidth and 30 ps aperture jitter preserve pulse shape integrity for accurate time-of-flight calculation. |
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 |
|---|---|---|---|
| AD7476ARMZ | Same 12-bit/1 MSPS performance but rated for –40°C to +85°C (B grade); SC70-6 package identical | Lacks automotive temperature qualification; suitable for commercial industrial or consumer equipment | Select AD7476ARMZ when extended temperature range is unnecessary and cost optimization is prioritized |
| ADS7822U | 12-bit, 200 kSPS max, 2.7–5.25 V supply; uses external reference; MSOP-8 package | Lower throughput and no internal reference require additional components and reduce system-level speed | Choose ADS7822U only if lower sampling rate suffices and external reference flexibility is required |
Compared with AD7476ARMZ, AD7476AYRMZ adds automotive qualification and wider temperature margin without sacrificing speed or accuracy; versus ADS7822U, it delivers 5× higher throughput, integrated reference, and smaller SC70 footprint-making it superior for space- and performance-constrained embedded systems.
Availability
AD7476AYRMZ is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical devices, and industrial motor control systems requiring stable component supply across automotive and extended-temperature deployments.
Supply support for AD7476AYRMZ 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, headquartered in Norwood, MA.
The AD7476A series belongs to Analog Devices' precision SAR ADC product line, designed specifically for low-power, high-speed data acquisition in space- and energy-constrained embedded systems.
FAQ
What is the maximum sampling rate supported by the AD7476AYRMZ?
The AD7476AYRMZ supports a maximum throughput rate of 1 MSPS, achieved with a 20 MHz serial clock and 16 SCLK cycles per conversion. This rate is guaranteed across its full operating temperature range (–40°C to +125°C) and supply range (2.35 V to 5.25 V), making AD7476AYRMZ suitable for real-time signal capture in demanding embedded applications.
Does the AD7476AYRMZ require an external voltage reference?
No, the AD7476AYRMZ uses an internal reference derived from the VDD supply, enabling a 0 V to VDD analog input range without external components. This simplifies design and reduces bill-of-materials cost, and is confirmed in the General Description and Specifications sections of the AD7476AYRMZ datasheet.
What package type and pin count does the AD7476AYRMZ use?
The AD7476AYRMZ is packaged in a 6-lead SC70 (also labeled SOT-323) outline measuring 2.0 mm × 1.25 mm. Pin configuration is VDD, GND, VIN, CS, SDATA, and SCLK-verified in Figure 5 and Table 6 of the official AD7476A/AD7477A/AD7478A Rev. G datasheet.
How does the AD7476AYRMZ handle power management in low-duty-cycle applications?
The AD7476AYRMZ features a full power-down mode drawing ≤1 µA, with 1 µs wake-up time. In normal operation at 1 MSPS, it consumes 5.1 mW max at 5 V. Its flexible serial clock–governed conversion allows dynamic power scaling-reducing average power by lowering SCLK frequency during idle periods while retaining fast response when needed-key for AD7476AYRMZ deployment in duty-cycled sensor nodes.
Is the AD7476AYRMZ compatible with standard SPI interfaces?
Yes, the AD7476AYRMZ is SPI/QSPI/MICROWIRE/DSP-compatible: it uses CS as frame sync, SCLK for clocking, and SDATA as a 3-state output delivering 12-bit results MSB-first with four leading zeros. Its timing satisfies standard SPI Mode 0 (CPOL = 0, CPHA = 0) requirements, and interoperability is confirmed in the Serial Interface section of the AD7476AYRMZ datasheet.
AD7476AYRMZ 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:
- -
- Qualification:
- -
AD7476AYRMZ FAQ
1.How can I place an order for AD7476AYRMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7476AYRMZ 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 AD7476AYRMZ reliable?
The price and inventory of AD7476AYRMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7476AYRMZ is usually 5 days.
3.What payment methods are accepted for AD7476AYRMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7476AYRMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7476AYRMZ?
AD7476AYRMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7476AYRMZ 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 AD7476AYRMZ?
For technical support, including AD7476AYRMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7476AYRMZ requirements.
6.How does Aetrix verify that AD7476AYRMZ is sourced from the original manufacturer or authorized distributors?
All AD7476AYRMZ 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 AD7476AYRMZ meets industry standards.
7.What is the process for return or replacement of AD7476AYRMZ?
All AD7476AYRMZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7476AYRMZ, 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 AD7476AYRMZ part is unused and in its original packaging.
Return procedure for AD7476AYRMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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