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Analog Devices Inc. AD7476AYKS-500RL7
- Part No.:
- AD7476AYKS-500RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
AD7476AYKS-500RL7.pdf
- Description:
- IC ADC 12BIT 1MSPS SC70-6 T/R
- Quantity:
- Payment:
- Shipping:
Inventory:296
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Product details
Overview
AD7476AYKS-500RL7 from Analog Devices is a 12-bit, single-supply, 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, low-power data acquisition in portable medical instruments and battery-powered sensor interfaces.
For engineers reviewing the AD7476AYKS-500RL7 datasheet, AD7476AYKS-500RL7 pinout, AD7476AYKS-500RL7 application, or AD7476AYKS-500RL7 equivalent, this page delivers verified technical context, exact pin functions, real-world use-value metrics, and validated alternative options for embedded signal chain design.
Technical Context
The AD7476AYKS-500RL7 implements a standard successive-approximation register (SAR) architecture with internal track-and-hold, sampling on the falling edge of CS and initiating conversion simultaneously. Its reference is derived directly from VDD, enabling a full-scale analog input range of 0 V to VDD without external reference components.
Conversion timing is fully synchronous to SCLK: 16 clock cycles required (800 ns max at 20 MHz), with 250 ns track-and-hold acquisition time and 50 ns minimum quiet time between conversions. Digital interface is SPI/QSPI/MICROWIRE/DSP-compatible, with MSB-first serial output including four leading zeros followed by 12-bit data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - guarantees monotonic transfer function with no missing codes up to 12-bit precision. |
| Throughput Rate | 1 MSPS - supports real-time sampling of signals up to 500 kHz Nyquist bandwidth. |
| SNR @ 100 kHz | 71 dB min - enables accurate digitization of medium-bandwidth analog signals such as ECG or optical sensor outputs. |
| Supply Voltage Range | 2.35 V to 5.25 V - compatible with Li-ion, 3.3 V, and 5 V system rails without level-shifting. |
| Power Dissipation @ 1 MSPS | 5.1 mW max at 5 V / 3.6 mW max at 3 V - enables ultra-low-power operation in always-on sensing nodes. |
| Standby Current | 1 µA max - allows rapid wake-up from deep sleep while minimizing quiescent drain in battery systems. |
| Full Power Bandwidth | 13.5 MHz @ –3 dB - supports anti-aliasing filter design for inputs beyond audio band. |
Pinout & Package
AD7476AYKS-500RL7 uses a 6-lead SC70 package (2.0 mm × 1.25 mm, 0.5 mm pitch), optimized for space-constrained portable electronics. Thermal impedance θJA = 340.2°C/W ensures stable operation under moderate ambient loads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDD) | Power supply input | Single 2.35–5.25 V rail powers analog core, digital logic, and internal reference; no external reference required. |
| 2 (GND) | Analog ground reference | Common return for all analog circuitry; must be routed separately from digital ground to preserve SNR. |
| 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 initiates sampling on falling edge and frames serial data; controls power state transitions. |
| 5 (SDATA) | Serial data output | Three-state CMOS output delivering 12-bit result MSB-first with four leading zeros; compatible with 3.3 V/5 V logic. |
| 6 (SCLK) | Serial clock input | Drives both data transfer and internal conversion timing; supports up to 20 MHz clock for 1 MSPS operation. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True SAR architecture enables deterministic latency (≤800 ns) and precise timing control for closed-loop systems. |
| VDD-referenced conversion | Eliminates need for external voltage reference or reference buffer, reducing BOM count and PCB area. |
| Flexible serial interface | Native SPI/QSPI/MICROWIRE/DSP compatibility simplifies integration with common microcontrollers and DSPs. |
| Low-power standby mode | 1 µA max current draw allows extended battery life in intermittent-sampling applications like wearable monitors. |
| Wide input bandwidth | 13.5 MHz full-power bandwidth supports fast transient capture and high-frequency sensor interfacing. |
Applications
| Portable Medical Monitoring | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous acquisition of ECG or pulse oximetry signals in handheld diagnostic devices. IC Role / Device Role / Timing Role: Primary analog front-end ADC capturing biopotential waveforms at ≥1 kSPS with <1 LSB INL error. Use Value: 71 dB SNR and 12-bit resolution enable clinical-grade waveform fidelity; 3.6 mW at 3 V extends runtime per charge cycle. |
Use Scenario: Periodic environmental sensing (temperature, humidity, light) in remote IoT nodes powered by coin cells. IC Role / Device Role / Timing Role: Low-duty-cycle ADC activated only during measurement bursts, synchronized via microcontroller GPIO. Use Value: 1 µA standby current minimizes quiescent drain; SC70 footprint reduces PCB size for compact enclosure designs. |
| Optical Sensor Signal Chain | Industrial Process Control Sensors |
Use Scenario: Digitizing photodiode or ambient light sensor outputs in smart lighting or gesture recognition modules. IC Role / Device Role / Timing Role: High-speed sampling of fast-rising optical pulses with minimal aperture jitter (30 ps typ). Use Value: 13.5 MHz full-power bandwidth captures nanosecond-scale transients; VDD-referenced input simplifies op-amp drive stage. |
Use Scenario: Analog monitoring of 4–20 mA loop sensors or thermocouple amplifiers in factory automation equipment. IC Role / Device Role / Timing Role: Precision digitizer interfaced to isolated signal conditioning stages operating from 3.3 V or 5 V rails. Use Value: ±1.5 LSB INL and ±1.5 LSB gain error ensure <0.1% total unadjusted error across temperature; SC70 package supports dense I/O module layouts. |
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 |
|---|---|---|---|
| AD7476ARTZ-REEL7 | Same 12-bit SAR core, identical SC70-6 package, but rated for –40°C to +85°C (B grade) vs. Y grade (–40°C to +125°C) of AD7476AYKS-500RL7. | Not qualified for extended-temperature industrial or automotive under-hood use. | Select AD7476AYKS-500RL7 when operation above +85°C is required; otherwise AD7476ARTZ-REEL7 offers cost-effective commercial-grade performance. |
| ADS7822U | 12-bit SAR ADC in MSOP-8, 1.25 MSPS max, 2.7–5.25 V supply, 70 dB SNR at 100 kHz, but requires external reference and has higher typical power (12 mW at 3 V). | Larger footprint and additional reference component increase system complexity and board area. | Choose AD7476AYKS-500RL7 for minimal BOM, smaller size, and wider supply range; ADS7822U suits designs needing marginally higher speed with existing reference infrastructure. |
Compared with AD7476ARTZ-REEL7, AD7476AYKS-500RL7 adds extended temperature qualification and tighter production screening; versus ADS7822U, it eliminates external reference dependency and reduces package area by 40%, at the cost of 0.25 MSPS lower maximum throughput.
Availability
AD7476AYKS-500RL7 is available at Aetrix Electronics and suitable for portable medical monitoring, battery-powered data loggers, optical sensor signal chains, and industrial process control sensors requiring stable component supply across extended temperature ranges.
Supply support for AD7476AYKS-500RL7 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, headquartered in Norwood, MA, with R&D and manufacturing facilities worldwide.
AD7476AYKS-500RL7 belongs to the AD7476A/AD7477A/AD7478A family of ultra-small, low-power SAR ADCs designed specifically for space- and energy-constrained portable and industrial sensing applications.
FAQ
What is the guaranteed operating temperature range for AD7476AYKS-500RL7?
The AD7476AYKS-500RL7 is specified for operation from –40°C to +125°C (Y grade), making it suitable for under-hood automotive, industrial control, and high-ambient medical environments. This extended range is confirmed in Table 1 of the Rev. G datasheet and distinguishes it from commercial-grade variants like AD7476ARTZ-REEL7.
Does AD7476AYKS-500RL7 require an external voltage reference?
No, AD7476AYKS-500RL7 uses an internal reference derived from VDD, supporting a full-scale analog input range of 0 V to VDD. This eliminates the need for external reference ICs or buffers, reducing system cost and PCB area-confirmed in the General Description and Product Highlights sections of the datasheet.
How many clock cycles does AD7476AYKS-500RL7 require for a complete conversion?
AD7476AYKS-500RL7 requires exactly 16 SCLK cycles per conversion, as stated in Table 4 (Timing Specifications) and Figure 3 (timing diagram). At 20 MHz SCLK, this yields a maximum conversion time of 800 ns, enabling the rated 1 MSPS throughput.
What is the analog input capacitance of AD7476AYKS-500RL7, and why does it matter?
AD7476AYKS-500RL7 has 20 pF input capacitance in track mode (6 pF in hold mode), per Table 1. This value directly impacts settling time and driver requirements: high-impedance sources (>1 kΩ) may degrade SNR or cause code-dependent errors unless buffered, as detailed in the Analog Input section.
Is AD7476AYKS-500RL7 pin-compatible with other members of the AD7476A/AD7477A/AD7478A family?
Yes, AD7476AYKS-500RL7 shares identical 6-lead SC70 pinout with AD7477A and AD7478A variants, as shown in Figure 5 and Table 6. All three use the same VDD/GND/VIN/CS/SDATA/SCLK assignment, enabling hardware reuse across 12-/10-/8-bit resolution options in the same footprint.
AD7476AYKS-500RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- 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:
- SC-70-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7476AYKS-500RL7 FAQ
1.How can I place an order for AD7476AYKS-500RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7476AYKS-500RL7 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 AD7476AYKS-500RL7 reliable?
The price and inventory of AD7476AYKS-500RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7476AYKS-500RL7 is usually 5 days.
3.What payment methods are accepted for AD7476AYKS-500RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7476AYKS-500RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7476AYKS-500RL7?
AD7476AYKS-500RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7476AYKS-500RL7 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 AD7476AYKS-500RL7?
For technical support, including AD7476AYKS-500RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7476AYKS-500RL7 requirements.
6.How does Aetrix verify that AD7476AYKS-500RL7 is sourced from the original manufacturer or authorized distributors?
All AD7476AYKS-500RL7 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 AD7476AYKS-500RL7 meets industry standards.
7.What is the process for return or replacement of AD7476AYKS-500RL7?
All AD7476AYKS-500RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7476AYKS-500RL7, 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 AD7476AYKS-500RL7 part is unused and in its original packaging.
Return procedure for AD7476AYKS-500RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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