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Analog Devices Inc. AD7476AYRM-REEL7
- Part No.:
- AD7476AYRM-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7476AYRM-REEL7.pdf
- Description:
- IC ADC 12BIT 1MSPS 8-MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
AD7476AYRM-REEL7 from Analog Devices is a 12-bit, single-channel, successive-approximation analog-to-digital converter (ADC) in a 6-lead SC70 package, operating from 2.35 V to 5.25 V supply and delivering 1 MSPS throughput with 71 dB SNR at 100 kHz input. It features no pipeline delay, SPI/QSPI/MICROWIRE/DSP-compatible serial interface, and internal VDD-referenced conversion enabling 0 V to VDD analog input range. It is used in portable medical instruments and battery-powered data acquisition systems requiring high-speed, low-power digitization.
For engineers reviewing the AD7476AYRM-REEL7 datasheet, AD7476AYRM-REEL7 pinout, AD7476AYRM-REEL7 application, or AD7476AYRM-REEL7 equivalent, key selection considerations include guaranteed 12-bit resolution with ±1.5 LSB INL (Y grade), SC70 thermal performance (θJA = 340.2°C/W), 1 µA max standby current, and compatibility with 3 V/5 V microprocessor interfaces via CS-controlled sampling and SCLK-synchronized serial output.
Technical Context
The AD7476AYRM-REEL7 implements a standard successive-approximation register (SAR) architecture with integrated track-and-hold amplifier, sampling on the falling edge of CS and initiating conversion simultaneously. Its conversion timing is fully determined by external SCLK frequency-16 cycles required for full 12-bit result-with no latency between sample initiation and data availability.
It uses an internal reference derived directly from VDD, eliminating external reference components and fixing the analog input range to 0 V to VDD. Digital I/Os are compatible with 1.8 V–5 V logic levels, supporting direct interfacing to modern low-voltage microcontrollers and DSPs without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - guarantees monotonic transfer function with no missing codes over full temperature range (−40°C to +125°C). |
| Throughput Rate | 1 MSPS - supports real-time sampling of signals up to 500 kHz Nyquist bandwidth in continuous mode. |
| SNR @ 100 kHz | 71 dB min - enables accurate digitization of medium-bandwidth sensor signals (e.g., optical sensors, biomedical waveforms). |
| Supply Voltage Range | 2.35 V to 5.25 V - allows direct operation from Li-ion batteries (3.0–4.2 V) or 3.3 V/5 V system rails without regulation. |
| Standby Current | 1 µA max - reduces quiescent power to <5 µW at 3 V, critical for intermittent-sampling battery applications. |
| INL (Y Grade) | ±1.5 LSB max - ensures end-point linearity suitable for closed-loop control and precision instrumentation calibration. |
| Full Power Bandwidth | 13.5 MHz typ - supports faithful capture of fast transients and wideband analog inputs without external anti-alias filtering. |
Pinout & Package
AD7476AYRM-REEL7 is housed in a 6-lead SC70 package (2.0 mm × 1.25 mm, 0.9 mm height), optimized for space-constrained portable designs and offering θJA = 340.2°C/W for thermal management in compact layouts.
| 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; decoupling capacitor required near pin. |
| 2: GND | Analog ground reference | Common return for analog input, internal T/H, and reference; must be connected to low-impedance system AGND plane. |
| 3: VIN | Analog input channel | Single-ended input with 0 V to VDD range; 20 pF input capacitance requires low-source-impedance drive (<130 Ω) for full AC performance. |
| 4: CS | Chip select / conversion trigger | Active-low signal that initiates sampling on falling edge and frames serial data; minimum pulse width 10 ns. |
| 5: SDATA | Serial data output | Three-state CMOS output delivering 12-bit result MSB-first with four leading zeros; high-impedance when CS high. |
| 6: SCLK | Serial clock input | Drives both data transfer and internal conversion timing; supports up to 20 MHz; 40/60 mark/space ratio required. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True SAR architecture delivers deterministic, single-cycle latency: sample and conversion complete within one CS assertion. |
| VDD-referenced conversion | Eliminates need for external reference IC or resistor divider, reducing BOM count and layout area while maintaining 0–VDD input range. |
| Flexible serial interface | Native SPI/QSPI/MICROWIRE/DSP compatibility enables plug-in integration with ARM Cortex-M, TI C2000, and Analog Devices SHARC processors. |
| Ultra-low standby power | 1 µA max shutdown current extends battery life in sleep-wake architectures-e.g., wearable ECG monitors sampling every 100 ms. |
| Automotive-qualified Y grade | Specified from −40°C to +125°C and qualified per AEC-Q100, enabling use in under-hood sensor signal conditioning and ADAS front-end modules. |
Applications
| Portable Medical Instrumentation | Battery-Powered Data Acquisition |
|---|---|
Use Scenario: Digitizing ECG, pulse oximetry, or glucose sensor outputs in handheld diagnostic devices with intermittent sampling. IC Role / Device Role / Timing Role: Primary ADC capturing analog biosignals at ≤1 MSPS with precise timing control via microcontroller-driven CS pulses. Use Value: 12-bit resolution and 71 dB SNR preserve clinical-grade waveform fidelity; 1 µA standby current enables >1-week battery life on coin cell. |
Use Scenario: Logging temperature, pressure, and humidity in wireless environmental sensors deployed in remote locations. IC Role / Device Role / Timing Role: Low-power SAR ADC triggered by MCU wake-up events, converting sensor outputs before returning to deep sleep. Use Value: SC70 footprint minimizes PCB area; VDD-referenced design avoids extra reference IC; 2.35 V operation supports aging battery discharge down to 2.4 V. |
| Optical Sensor Interface | Industrial Control Loop Feedback |
Use Scenario: Converting photodiode or CCD output in compact optical encoders, barcode scanners, or laser alignment tools. IC Role / Device Role / Timing Role: High-speed ADC acquiring fast-rising optical pulses with minimal aperture jitter (30 ps typ) and 13.5 MHz full-power bandwidth. Use Value: 100 kHz input SNR of 71 dB ensures accurate amplitude measurement of modulated light signals; SPI interface simplifies FPGA integration. |
Use Scenario: Sampling motor current, voltage, or position feedback in servo drives and PLC analog I/O modules. IC Role / Device Role / Timing Role: Precision ADC providing real-time feedback for closed-loop PID control with guaranteed monotonicity and ±1.5 LSB INL. Use Value: Y-grade temperature range (−40°C to +125°C) ensures reliability in industrial enclosures; no missing codes prevents control instability during thermal cycling. |
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, 8-pin SOIC; lacks SC70 option and automotive qualification. | Lower throughput limits use in dynamic control loops; larger SOIC footprint increases board area. | Select when cost sensitivity outweighs size/power constraints and automotive temp range is not required. |
| MAX1116EUT+T | 12-bit, 1 MSPS, 2.7–3.6 V only, SOT-23-6; no 5 V operation or −40°C to +125°C rating. | Restricted supply range excludes dual-rail systems; limited temperature range excludes under-hood use. | Select for ultra-low-cost 3.3 V-only portable designs where extended temperature is unnecessary. |
Compared with ADS7822IDR and MAX1116EUT+T, AD7476AYRM-REEL7 uniquely combines 1 MSPS speed, 2.35–5.25 V operation, SC70 packaging, and AEC-Q100 Y-grade qualification-making it the only choice for space-constrained, wide-supply, high-temp industrial and automotive sensing nodes.
Availability
AD7476AYRM-REEL7 is available at Aetrix Electronics and suitable for portable medical instrumentation, battery-powered data acquisition, optical sensor interface, and industrial control loop feedback requiring stable component supply across automotive and industrial temperature ranges.
Supply support for AD7476AYRM-REEL7 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, with R&D and manufacturing operations worldwide.
The AD7476A family was designed specifically to deliver high-speed, low-power, small-footprint SAR ADC capability for portable and energy-sensitive applications-prioritizing SC70 integration, VDD-referenced simplicity, and automotive-grade reliability.
FAQ
What is the maximum sampling rate supported by the AD7476AYRM-REEL7?
The AD7476AYRM-REEL7 supports a maximum throughput rate of 1 MSPS, achieved using a 20 MHz SCLK and completing conversion in 16 serial clock cycles. 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), with no pipeline delay affecting timing predictability.
Does the AD7476AYRM-REEL7 require an external voltage reference?
No, the AD7476AYRM-REEL7 uses an internal reference derived from VDD, establishing a 0 V to VDD analog input range. This eliminates the need for external reference components, simplifying design and reducing bill-of-materials cost while maintaining accuracy specified over temperature and supply variations.
What package type and dimensions does the AD7476AYRM-REEL7 use?
The AD7476AYRM-REEL7 is supplied in a 6-lead SC70 package measuring 2.0 mm × 1.25 mm with a height of 0.9 mm. Its thermal characteristics include θJA = 340.2°C/W and θJC = 228.9°C/W, making it suitable for thermally constrained PCB layouts in portable and automotive applications.
How does the AD7476AYRM-REEL7 handle power management in low-duty-cycle systems?
The AD7476AYRM-REEL7 features a full power-down mode drawing ≤1 µA (typically 50 nA), activated by holding CS high. This enables ultra-low average power in systems that sample infrequently-e.g., a wireless sensor node waking every second to acquire one sample, achieving sub-µW average consumption at 3 V supply.
Is the AD7476AYRM-REEL7 compatible with standard microcontroller SPI peripherals?
Yes, the AD7476AYRM-REEL7 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 data MSB-first with four leading zeros. It operates with standard CPOL = 0, CPHA = 0 timing and supports logic levels from 1.8 V to 5 V without level shifters.
AD7476AYRM-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- SPI, DSP
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7476AYRM-REEL7 FAQ
1.How can I place an order for AD7476AYRM-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7476AYRM-REEL7 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 AD7476AYRM-REEL7 reliable?
The price and inventory of AD7476AYRM-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7476AYRM-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7476AYRM-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7476AYRM-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7476AYRM-REEL7?
AD7476AYRM-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7476AYRM-REEL7 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 AD7476AYRM-REEL7?
For technical support, including AD7476AYRM-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7476AYRM-REEL7 requirements.
6.How does Aetrix verify that AD7476AYRM-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7476AYRM-REEL7 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 AD7476AYRM-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7476AYRM-REEL7?
All AD7476AYRM-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7476AYRM-REEL7, 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 AD7476AYRM-REEL7 part is unused and in its original packaging.
Return procedure for AD7476AYRM-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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