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Analog Devices Inc. AD7476ABKSZ-500RL7
- Part No.:
- AD7476ABKSZ-500RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
AD7476ABKSZ-500RL7.pdf
- Description:
- IC ADC 12BIT SAR SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:474
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Product details
Overview
AD7476ABKSZ-500RL7 from Analog Devices is a 12-bit, single-supply, successive-approximation ADC in a 6-lead SC70 package. It operates from 2.35 V to 5.25 V, achieves 1 MSPS throughput, delivers 71 dB SNR at 100 kHz input, and features no pipeline delay. It serves as the primary analog front-end digitizer in portable medical sensors requiring high-speed, low-power signal acquisition.
For engineers reviewing the AD7476ABKSZ-500RL7 datasheet, AD7476ABKSZ-500RL7 pinout, AD7476ABKSZ-500RL7 application, or AD7476ABKSZ-500RL7 equivalent, this page provides verified specifications, validated SC70 pin mapping, confirmed 12-bit dynamic performance at 1 MSPS, and two technically documented alternative parts for battery-powered instrumentation design.
Technical Context
The AD7476ABKSZ-500RL7 implements a standard successive-approximation register (SAR) architecture with an integrated track-and-hold amplifier capable of >13 MHz full-power bandwidth. Conversion is initiated on the falling edge of CS, and data is clocked out MSB-first on SDATA synchronized to SCLK falling edges.
It uses an internal VDD-referenced reference, enabling a 0 V to VDD analog input range. The serial interface is SPI/QSPI/MICROWIRE/DSP-compatible, requires no external reference, and supports flexible power management via a 1 µA standby mode with 1 µs wake-up time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 1 LSB = VDD/4096 quantization step for precise sensor voltage digitization |
| Throughput Rate | 1 MSPS - supports real-time sampling of signals up to 500 kHz Nyquist bandwidth |
| SNR @ 100 kHz | 71 dB min - enables accurate measurement of small-amplitude signals in noisy environments |
| Supply Range | 2.35 V to 5.25 V - compatible with single-cell Li-ion (3.0–4.2 V) and 3.3 V/5 V system rails |
| Power @ 1 MSPS | 5.1 mW max at 5 V - allows continuous high-speed acquisition in thermally constrained handheld devices |
| Standby Current | 1 µA max - extends battery life during idle intervals without sacrificing wake-up latency |
| Input Range | 0 V to VDD - eliminates need for level-shifting circuitry when interfacing with rail-to-rail sensors |
Pinout & Package
AD7476ABKSZ-500RL7 is housed in a 6-lead SC70 package (2.0 mm × 1.25 mm, 0.9 mm height), optimized for space-constrained portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDD) | Power supply input | Single 2.35–5.25 V supply powering analog core, reference, and digital interface |
| 2 (GND) | Analog ground reference | Common return for VIN and internal circuitry; must be connected to clean system AGND |
| 3 (VIN) | Analog input channel | Single-ended input accepting 0 V to VDD range; 20 pF input capacitance requires low-impedance source |
| 4 (CS) | Chip select / conversion trigger | Active-low signal initiating sample-and-hold and framing 16-bit serial output (4 leading zeros + 12 data bits) |
| 5 (SDATA) | Serial data output | Three-state CMOS output delivering conversion result MSB-first on SCLK falling edges |
| 6 (SCLK) | Serial clock input | Controls both data transfer timing and internal conversion clock; supports up to 20 MHz operation |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Enables deterministic, one-shot conversion control-critical for time-triggered sampling in closed-loop systems |
| VDD-referenced internal reference | Eliminates external reference component count and layout complexity while maintaining 0–VDD input range |
| SC70 footprint | Reduces PCB area by >50% vs. MSOP-8 variants, supporting ultra-compact wearable and implantable designs |
| SPI/QSPI/MICROWIRE compatibility | Direct interoperability with common microcontrollers (e.g., STM32, MSP430) without protocol translation logic |
| 1 µA standby current | Supports duty-cycled acquisition schemes where ADC sleeps between bursts, extending coin-cell battery life to years |
Applications
| Portable ECG Monitor | Wireless Sensor Node |
|---|---|
Use Scenario: Continuous 1 kHz sampling of amplified biopotential signals from dry electrodes in a palm-sized ECG patch. IC Role / Device Role / Timing Role: Primary SAR ADC digitizing analog front-end output; triggered synchronously with MCU timer interrupt. Use Value: 71 dB SNR ensures detection of sub-millivolt P-waves and T-waves; 1 MSPS headroom accommodates oversampling for noise reduction. |
Use Scenario: Intermittent temperature/humidity reading every 10 seconds in a LoRaWAN node powered by CR2032. IC Role / Device Role / Timing Role: Low-power ADC acquiring conditioned sensor outputs only during active measurement windows. Use Value: 1 µA standby current minimizes quiescent drain; SC70 size enables integration into <100 mm² PCB area budget. |
| Handheld Blood Glucose Meter | Industrial Predictive Maintenance Sensor |
Use Scenario: Single-shot glucose strip current measurement after electrochemical reaction completes. IC Role / Device Role / Timing Role: Precision 12-bit converter capturing peak analog response within 1 ms window post-strip insertion. Use Value: ±1.5 LSB INL guarantees consistent calibration across production units; 2.35 V minimum supply supports aging battery operation. |
Use Scenario: Vibration acceleration data acquisition from MEMS piezoresistive sensors on rotating machinery. IC Role / Device Role / Timing Role: High-bandwidth digitizer capturing transient shock events up to 100 kHz content. Use Value: 13.5 MHz full-power bandwidth preserves harmonic content critical for FFT-based fault signature analysis. |
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 resolution, 1 MSPS, SC70-6 package; differs in grade (A-grade vs. B-grade) and tape/reel packaging (3 k vs. 500 units). | Identical functional behavior; A-grade offers same INL/SNR specs but wider temperature range (−40°C to +85°C vs. B-grade's −40°C to +85°C - no difference per datasheet). | Select AD7476ABKSZ-500RL7 for smaller reel quantity and guaranteed B-grade parametric consistency at volume. |
| ADS7822U | 12-bit, 200 kSPS max, 8-pin SOIC; lower speed, higher power (1.2 mW at 200 kSPS), external reference required. | Not suitable for 1 MSPS applications; requires additional reference IC and larger board area. | Choose ADS7822U only if system clock constraints prevent 20 MHz SCLK generation or if SOIC hand-soldering is preferred over SC70 reflow. |
Compared with AD7476ABKSZ-500RL7, AD7476ARTZ-REEL7 offers identical electrical performance in a different reel configuration, while ADS7822U trades speed and integration for legacy SOIC compatibility-making AD7476ABKSZ-500RL7 optimal for new compact, high-throughput designs.
Availability
AD7476ABKSZ-500RL7 is available at Aetrix Electronics and suitable for portable medical instruments, wireless sensor nodes, handheld diagnostic tools, and industrial predictive maintenance systems requiring stable component supply across multi-year production cycles.
Supply support for AD7476ABKSZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD7476A family was designed specifically for space- and power-constrained portable instrumentation, delivering 12-bit precision at 1 MSPS in the smallest possible footprint without external references or support components.
FAQ
What is the maximum sampling rate supported by the AD7476ABKSZ-500RL7?
The AD7476ABKSZ-500RL7 supports a maximum throughput rate of 1 MSPS, achieved with a 20 MHz serial clock and 16 SCLK cycles per conversion. This rate is fully specified across its operating temperature range (−40°C to +85°C) and supply range (2.35 V to 5.25 V). At lower clock frequencies, throughput scales linearly-for example, 10 MHz SCLK yields 500 kSPS.
Does the AD7476ABKSZ-500RL7 require an external reference voltage?
No, the AD7476ABKSZ-500RL7 uses an internal reference derived from VDD, enabling a full-scale analog input range of 0 V to VDD. This eliminates the need for external reference components, reduces BOM cost, and simplifies layout-especially valuable in SC70-constrained designs. No external reference pins are present on the device.
What is the analog input voltage range for the AD7476ABKSZ-500RL7?
The AD7476ABKSZ-500RL7 accepts a single-ended analog input from 0 V to VDD. For example, with a 3.3 V supply, the valid input range is 0 V to 3.3 V. Input overvoltage beyond VDD + 0.3 V or below −0.3 V violates absolute maximum ratings and may cause damage or latch-up.
How does the AD7476ABKSZ-500RL7 enter and exit standby mode?
The AD7476ABKSZ-500RL7 enters standby mode when CS remains high and no SCLK activity occurs for >100 ns. It draws ≤1 µA in this state. Exit occurs on the first falling edge of CS, with full functionality restored within 1 µs-verified in the Power-Up Time section of the datasheet. No command sequence is required.
Is the AD7476ABKSZ-500RL7 pin-compatible with other members of the AD7476A/AD7477A/AD7478A family?
Yes, all SC70-packaged variants-including AD7476ABKSZ-500RL7 (12-bit), AD7477ABKSZ-500RL7 (10-bit), and AD7478ABKSZ-500RL7 (8-bit)-share identical 6-lead SC70 pinouts and interface timing. They differ only in resolution, dynamic performance, and conversion cycle count (16/14/12 SCLK cycles), allowing hardware reuse across precision tiers.
AD7476ABKSZ-500RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- 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 ~ 85°C
- Supplier Device Package:
- SC-70-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7476ABKSZ-500RL7 FAQ
1.How can I place an order for AD7476ABKSZ-500RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7476ABKSZ-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 AD7476ABKSZ-500RL7 reliable?
The price and inventory of AD7476ABKSZ-500RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7476ABKSZ-500RL7 is usually 5 days.
3.What payment methods are accepted for AD7476ABKSZ-500RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7476ABKSZ-500RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7476ABKSZ-500RL7?
AD7476ABKSZ-500RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7476ABKSZ-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 AD7476ABKSZ-500RL7?
For technical support, including AD7476ABKSZ-500RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7476ABKSZ-500RL7 requirements.
6.How does Aetrix verify that AD7476ABKSZ-500RL7 is sourced from the original manufacturer or authorized distributors?
All AD7476ABKSZ-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 AD7476ABKSZ-500RL7 meets industry standards.
7.What is the process for return or replacement of AD7476ABKSZ-500RL7?
All AD7476ABKSZ-500RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7476ABKSZ-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 AD7476ABKSZ-500RL7 part is unused and in its original packaging.
Return procedure for AD7476ABKSZ-500RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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