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Analog Devices Inc. AD7476ABKSZ-REEL7
- Part No.:
- AD7476ABKSZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
AD7476ABKSZ-REEL7.pdf
- Description:
- IC ADC 12BIT SAR SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,675
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Product details
Overview
AD7476ABKSZ-REEL7 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 AD7476ABKSZ-REEL7 datasheet, AD7476ABKSZ-REEL7 pinout, AD7476ABKSZ-REEL7 application, or AD7476ABKSZ-REEL7 equivalent, key selection considerations include guaranteed 12-bit no-missed-codes performance, 800 ns max conversion time, SPI/QSPI/MICROWIRE/DSP-compatible serial interface, and 1 µA max standby current in full power-down mode.
Technical Context
The AD7476ABKSZ-REEL7 implements a standard successive-approximation register (SAR) architecture with a track-and-hold amplifier supporting >13 MHz full-power bandwidth. Conversion is initiated on the falling edge of CS, and sampling is precisely controlled by that same edge-eliminating pipeline latency.
It uses VDD as the internal reference source, enabling rail-to-rail analog input (0 V to VDD) without external reference components. Serial data output is MSB-first, with four leading zeros followed by 12-bit conversion result, synchronized to SCLK falling edges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - guarantees monotonicity and no missing codes across full temperature range (–40°C to +85°C). |
| Throughput Rate | 1 MSPS - supports real-time sampling of signals up to 500 kHz Nyquist bandwidth. |
| SNR @ 100 kHz | 71 dB min - enables high-fidelity digitization of medium-bandwidth sensor and audio signals. |
| Supply Range | 2.35 V to 5.25 V - compatible with single-cell Li-ion, 3.3 V, and 5 V systems without level-shifting. |
| Power Dissipation @ 1 MSPS | 5.1 mW max at 5 V / 3.6 mW max at 3 V - optimized for ultra-low-power portable operation. |
| Standby Current | 1 µA max - allows rapid wake-up from deep sleep while minimizing system quiescent load. |
| Conversion Time | 800 ns max - fixed 16-SCLK cycle timing ensures deterministic latency for time-critical control loops. |
Pinout & Package
AD7476ABKSZ-REEL7 is housed in a 6-lead SC70 package (2.0 mm × 1.25 mm, 0.9 mm height), optimized for space-constrained PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Single 2.35 V–5.25 V supply powers analog core, reference, and digital interface; also serves as ADC reference voltage. |
| GND | Analog ground | Common reference for analog input and internal circuitry; must be connected to low-noise system AGND plane. |
| VIN | Analog input | Single-ended input with 0 V to VDD range; 20 pF input capacitance requires careful driver impedance matching. |
| CS | Chip select | Active-low signal initiating both sample acquisition (on falling edge) and serial frame synchronization. |
| SDATA | Serial data output | Three-state CMOS output delivering 12-bit result MSB-first, preceded by four leading zeros. |
| SCLK | Serial clock input | Drives both data transfer and internal conversion timing; supports up to 20 MHz clock rate. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True SAR architecture ensures deterministic 800 ns conversion latency and precise sampling instant control via CS edge. |
| VDD-referenced conversion | Eliminates need for external reference IC or resistor divider, reducing BOM count and layout area in compact designs. |
| Flexible serial interface | Fully compatible with SPI, QSPI, MICROWIRE, and DSP host controllers-no protocol translation required. |
| Ultra-low-power standby | 1 µA max shutdown current enables multi-day battery life in intermittent-sampling applications like wearable sensors. |
| Wide input bandwidth | 13.5 MHz full-power bandwidth supports direct digitization of fast transients and RF envelope detection. |
Applications
| Battery-Powered Data Loggers | Portable Medical Sensors |
|---|---|
Use Scenario: Continuous monitoring of ECG, pulse oximetry, or temperature in handheld diagnostic devices powered by coin-cell or Li-ion batteries. IC Role / Device Role / Timing Role: Primary analog front-end ADC acquiring conditioned biopotential signals at 1 MSPS with minimal power overhead. Use Value: 71 dB SNR preserves clinical-grade signal fidelity; 1 µA standby current extends battery life beyond 12 months in sleep-wake cycles. |
Use Scenario: Real-time digitization of amplified photodiode outputs in point-of-care blood analyzers or glucose meters. IC Role / Device Role / Timing Role: High-speed, low-noise ADC capturing optical sensor waveforms during short-duration assay measurements. Use Value: 13.5 MHz full-power bandwidth captures fast LED pulse envelopes; SC70 footprint enables integration into sub-2 cm² sensor modules. |
| Industrial IoT Edge Nodes | Optical Communication Receivers |
Use Scenario: Condition monitoring of vibration, pressure, or temperature in wireless sensor nodes deployed in factory environments. IC Role / Device Role / Timing Role: Low-power ADC interfacing with MEMS sensors and feeding data to ultra-low-power microcontrollers over SPI. Use Value: 2.35 V minimum supply supports aging battery operation; SPI compatibility simplifies firmware integration with common RTOS drivers. |
Use Scenario: Digitizing analog output from PIN diode receivers in fiber-optic link diagnostics or free-space optical modems. IC Role / Device Role / Timing Role: High-SNR ADC capturing fast optical envelope signals for bit-error-rate analysis and signal integrity validation. Use Value: 71 dB SNR at 100 kHz enables accurate amplitude measurement of modulated optical carriers; no pipeline delay ensures precise timing alignment. |
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/1 MSPS specs but in 6-lead SOT-23 package; thermal resistance θJA = 292.5°C/W vs. SC70's 340.2°C/W. | Better thermal performance in high-ambient or continuous-conversion use cases; larger footprint than SC70. | Select when board-level thermal management is constrained and SOT-23 mounting is acceptable. |
| ADS7822U | 12-bit, 200 kSPS max, 3 V only, SPI interface; 70 dB SNR at 10 kHz; no VDD-referenced design-requires external reference. | Lower throughput and narrower bandwidth limit use to slower sensor channels; higher power per sample at equivalent rates. | Choose only if legacy design uses TI ecosystem and 200 kSPS suffices; not suitable for 1 MSPS or wideband applications. |
Compared with AD7476ARTZ-REEL7, AD7476ABKSZ-REEL7 offers superior board-area efficiency in ultra-compact layouts but requires tighter thermal design; versus ADS7822U, it delivers 5× higher throughput, wider bandwidth, and integrated reference-enabling simpler, higher-performance signal chains.
Availability
AD7476ABKSZ-REEL7 is available at Aetrix Electronics and suitable for battery-powered systems, portable medical instruments, and industrial IoT edge nodes requiring stable component supply across extended production lifecycles.
Supply support for AD7476ABKSZ-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.
The AD7476A family was designed specifically for space- and power-constrained applications demanding high-speed, high-accuracy digitization without external references-targeting portable instrumentation, medical devices, and energy-harvesting sensor nodes.
FAQ
What is the maximum sampling rate supported by the AD7476ABKSZ-REEL7?
The AD7476ABKSZ-REEL7 supports a maximum throughput rate of 1 MSPS, achieved with a 20 MHz SCLK and 16 serial clock 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 SCLK frequencies, throughput scales linearly-for example, 10 MHz SCLK yields 500 kSPS-while maintaining full DC and AC performance specifications.
Does the AD7476ABKSZ-REEL7 require an external voltage reference?
No, the AD7476ABKSZ-REEL7 uses an internal reference derived directly from the VDD supply, enabling a full-scale analog input range of 0 V to VDD. This eliminates the need for external reference ICs, precision resistors, or decoupling networks typically required in reference-dependent ADCs-reducing bill-of-materials cost and PCB area while simplifying layout and calibration.
How does the AD7476ABKSZ-REEL7 handle power management in low-duty-cycle applications?
The AD7476ABKSZ-REEL7 features a full power-down mode with 1 µA maximum standby current and 50 nA typical draw. In this mode, the internal reference and track-and-hold amplifier are disabled, and SDATA enters high-impedance state. Wake-up time from power-down is 1 µs max, allowing rapid resumption of conversion after wake-on-interrupt or timer-triggered sampling-ideal for duty-cycled sensor nodes.
What serial interface protocols is the AD7476ABKSZ-REEL7 compatible with?
The AD7476ABKSZ-REEL7 supports SPI, QSPI, MICROWIRE, and generic DSP serial interfaces. Its SDATA output is edge-aligned to the falling edge of SCLK, and CS acts as frame sync-matching standard SPI Mode 0 (CPOL = 0, CPHA = 0) timing. No configuration registers or mode pins are required; compatibility is inherent in its timing architecture and logic-level thresholds.
Is the AD7476ABKSZ-REEL7 pin-compatible with other members of the AD7476A/AD7477A/AD7478A family?
Yes, the AD7476ABKSZ-REEL7 shares identical 6-lead SC70 pinout and interface timing with AD7477A and AD7478A variants. All three devices use the same CS/SCLK/SDATA/VIN/VDD/GND arrangement and identical serial framing (four leading zeros followed by data bits). However, resolution (12/10/8-bit), conversion time (800/700/600 ns), and dynamic performance differ-requiring firmware adaptation for bit-width and timing.
AD7476ABKSZ-REEL7 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-REEL7 FAQ
1.How can I place an order for AD7476ABKSZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7476ABKSZ-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 AD7476ABKSZ-REEL7 reliable?
The price and inventory of AD7476ABKSZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7476ABKSZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7476ABKSZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7476ABKSZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7476ABKSZ-REEL7?
AD7476ABKSZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7476ABKSZ-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 AD7476ABKSZ-REEL7?
For technical support, including AD7476ABKSZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7476ABKSZ-REEL7 requirements.
6.How does Aetrix verify that AD7476ABKSZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7476ABKSZ-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 AD7476ABKSZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7476ABKSZ-REEL7?
All AD7476ABKSZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7476ABKSZ-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 AD7476ABKSZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7476ABKSZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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