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Analog Devices Inc. AD7477ART-REEL
- Part No.:
- AD7477ART-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
AD7477ART-REEL.pdf
- Description:
- IC ADC 10BIT 1MSPS SOT-23-6 T/R
- Quantity:
- Payment:
- Shipping:
Inventory:8,800
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Product details
Overview
AD7477ART-REEL from Analog Devices is a 10-bit, 1 MSPS successive-approximation ADC in a 6-lead SOT-23 package, operating from 2.7 V to 5.25 V supply. It delivers 61 dB SINAD at 100 kHz input, 70 dB SNR (typ), and 400 ns track-and-hold acquisition time, enabling high-fidelity data capture in space-constrained battery-powered instrumentation.
For engineers reviewing the AD7477ART-REEL datasheet, AD7477ART-REEL pinout, AD7477ART-REEL application, or AD7477ART-REEL equivalent, this page provides verified technical context, real-world use cases, validated alternatives, and supply-chain support for rapid integration into portable medical sensors, optical sensor interfaces, and low-power data acquisition systems.
Technical Context
The AD7477ART-REEL implements a standard SAR architecture with no pipeline delay, using CS to initiate sampling on its falling edge and SCLK to control conversion timing. Its internal VDD-referenced ADC enables full-scale analog input range of 0 V to VDD without external reference components.
It features SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface with MSB-first output format: four leading zeros, then 10-bit conversion result, followed by two trailing zeros. Power management includes full power-down mode (1 μA max) and dynamic scaling via SCLK frequency adjustment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10 bits - supports 1024 discrete digital levels for medium-precision sensor digitization |
| Throughput Rate | 1 MSPS - enables real-time sampling of signals up to ~500 kHz Nyquist bandwidth |
| SINAD | 61 dB min at 100 kHz - ensures ≥9.8 effective bits for clean signal reconstruction |
| Supply Range | 2.7 V to 5.25 V - compatible with single-cell Li-ion (3.0–4.2 V) and 3.3 V/5 V logic rails |
| Power Dissipation | 4.8 mW max at 3 V / 1 MSPS - enables continuous operation in sub-5 mW system power budgets |
| Track-and-Hold Acquisition | 400 ns max - allows accurate sampling of fast-rising transients without aperture error degradation |
| Input Voltage Range | 0 V to VDD - eliminates need for level-shifting circuitry when interfacing with rail-to-rail sensors |
Pinout & Package
AD7477ART-REEL is housed in a 6-lead SOT-23 package (2.9 mm × 1.6 mm × 1.1 mm), optimized for PCB area minimization in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Power supply input | Single 2.7–5.25 V rail powers both analog core and digital interface; also serves as internal reference source |
| GND (Pin 2) | Analog ground reference | Common return path for VIN and internal circuitry; must be connected to low-impedance system ground plane |
| VIN (Pin 3) | Analog input channel | Single-ended input with 0 V to VDD range and 30 pF input capacitance; requires external RC anti-aliasing filter |
| SCLK (Pin 4) | Serial clock input | Controls conversion timing and data clocking; supports up to 20 MHz for 1 MSPS operation |
| SDATA (Pin 5) | Serial data output | MSB-first 16-bit frame: 4 leading zeros + 10-bit result + 2 trailing zeros; tri-state capable |
| CS (Pin 6) | Chip select / conversion trigger | Active-low signal that initiates sampling on falling edge and frames serial data transfer |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Guarantees deterministic latency: sampling occurs precisely on CS falling edge, with conversion completed in fixed 800 ns |
| VDD-referenced conversion | Eliminates external reference IC and associated layout complexity while maintaining full dynamic input range |
| Flexible serial clock management | Conversion rate scales linearly with SCLK frequency-reducing clock speed lowers average power without firmware changes |
| Ultra-low shutdown current | 1 μA maximum in full power-down mode enables microamp-level system sleep states between conversions |
| SPI/QSPI/MICROWIRE compatibility | Direct interface with common microcontrollers (e.g., STM32, MSP430, ADSP-BF5xx) without protocol translation logic |
Applications
| Portable Medical Sensors | Optical Sensor Interfaces |
|---|---|
|
Use Scenario: Digitizing photodiode current outputs in pulse oximeters and glucose monitors where size and battery life are critical. IC Role / Device Role / Timing Role: ADC front-end capturing analog sensor signals at ≤1 MSPS with minimal latency and no missing codes. Use Value: 10-bit resolution and 61 dB SINAD preserve physiological waveform fidelity; 4.8 mW power enables >72-hour operation on coin-cell batteries. |
Use Scenario: Converting ambient light or proximity sensor outputs in wearables and IoT endpoints. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail input ADC interfacing directly with phototransistor or CMOS image sensor analog outputs. Use Value: 0 V to VDD input range accepts unbuffered sensor outputs; SOT-23 footprint fits within <3 mm² PCB area constraints. |
| Battery-Powered Data Loggers | Industrial Handheld Instruments |
|
Use Scenario: Sampling temperature, pressure, or humidity sensors in field-deployable environmental monitors. IC Role / Device Role / Timing Role: Low-power SAR ADC performing burst-mode acquisition synchronized to MCU wake-up events. Use Value: 1 μA shutdown current extends shelf life; SPI-compatible interface reduces GPIO count and firmware overhead. |
Use Scenario: Signal conditioning in handheld multimeters and thermal imagers requiring compact, reliable digitization. IC Role / Device Role / Timing Role: Precision ADC with guaranteed no-missed-codes performance across −40°C to +85°C operating range. Use Value: ±1 LSB INL and ±0.9 LSB DNL ensure measurement repeatability; SOT-23 package withstands mechanical shock in portable enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-bit resolution, 200 kSPS max, 3 V only supply, no internal reference - requires external VREF | Limited to lower-precision, lower-speed applications such as basic panel meters or simple threshold detection | Select when cost sensitivity outweighs resolution needs and system already provides stable 2.5 V reference |
| MAX1116EUT+T | 10-bit, 1 MSPS, but uses internal 2.048 V reference - fixed input range of 0–2.048 V regardless of VDD | Requires input scaling for signals exceeding 2.048 V; less flexible for variable supply or rail-to-rail sensor interfaces | Prefer when absolute voltage accuracy is prioritized over supply flexibility and board area |
Compared with ADS7822U and MAX1116EUT+T, AD7477ART-REEL uniquely combines 10-bit precision, 1 MSPS throughput, VDD-referenced full-scale range, and SOT-23 packaging-enabling higher system integration density and simplified analog front-end design without sacrificing speed or accuracy.
Availability
AD7477ART-REEL is available at Aetrix Electronics and suitable for battery-powered systems, portable medical instruments, and optical sensor interfaces requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for AD7477ART-REEL 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, serving industrial, automotive, communications, and healthcare markets since 1965.
The AD7476/AD7477/AD7478 family was designed specifically for ultra-compact, low-power data acquisition in portable and energy-sensitive applications-prioritizing minimal PCB footprint, single-supply simplicity, and guaranteed no-missed-codes performance.
FAQ
What is the guaranteed operating temperature range for AD7477ART-REEL?
The AD7477ART-REEL is rated for −40°C to +85°C (industrial grade). This is confirmed in the AD7477 Specifications table (Page 5) under "A Version" temperature range, and applies to all AD7477 variants including the ART-REEL tape-and-reel packaging variant.
Does AD7477ART-REEL require an external voltage reference?
No. AD7477ART-REEL uses an internal reference derived from VDD, enabling a full-scale input range of 0 V to VDD. This eliminates the need for external reference components and simplifies layout-confirmed in the General Description (Page 1) and DC Accuracy section (Page 5).
What is the exact serial data format output by AD7477ART-REEL?
AD7477ART-REEL outputs a 16-bit frame MSB first: four leading zeros, followed by the 10-bit conversion result, followed by two trailing zeros. This is explicitly defined in the Pin Function Descriptions (Page 10) for the SDATA pin and distinguishes it from the AD7476 (12-bit) and AD7478 (8-bit) variants.
Can AD7477ART-REEL operate from a 2.5 V supply?
No. The AD7477ART-REEL minimum supply voltage is 2.7 V, as specified in Table 2 (AD7477 Specifications, Page 5). Operation below 2.7 V is not guaranteed and may result in degraded INL, reduced SNR, or communication failure-unlike the AD7476 which supports 2.35 V.
Is AD7477ART-REEL pin-compatible with AD7476ART-REEL or AD7478ART-REEL?
Yes. All three parts-AD7476ART-REEL, AD7477ART-REEL, and AD7478ART-REEL-share identical 6-lead SOT-23 pinout, pin functions, and package dimensions (Figure 3, Page 10). This allows direct substitution in the same footprint when resolution or dynamic performance requirements change.
AD7477ART-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Number of Bits:
- 10
- 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:
- SOT-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7477ART-REEL FAQ
1.How can I place an order for AD7477ART-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7477ART-REEL 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 AD7477ART-REEL reliable?
The price and inventory of AD7477ART-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7477ART-REEL is usually 5 days.
3.What payment methods are accepted for AD7477ART-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7477ART-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7477ART-REEL?
AD7477ART-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7477ART-REEL 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 AD7477ART-REEL?
For technical support, including AD7477ART-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7477ART-REEL requirements.
6.How does Aetrix verify that AD7477ART-REEL is sourced from the original manufacturer or authorized distributors?
All AD7477ART-REEL 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 AD7477ART-REEL meets industry standards.
7.What is the process for return or replacement of AD7477ART-REEL?
All AD7477ART-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7477ART-REEL, 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 AD7477ART-REEL part is unused and in its original packaging.
Return procedure for AD7477ART-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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