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Analog Devices Inc. AD7476ARTZ-500RL7
- Part No.:
- AD7476ARTZ-500RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
AD7476ARTZ-500RL7.pdf
- Description:
- IC ADC 12BIT SAR SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,103
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Product details
Overview
AD7476ARTZ-500RL7 from Analog Devices is a 12-bit, 1 MSPS successive-approximation ADC in a 6-lead SOT-23 package, operating from 2.35 V to 5.25 V supply, delivering 70 dB SNR at 100 kHz input, with no pipeline delay and SPI-/QSPI-/MICROWIRE-compatible serial interface - used for high-speed data acquisition in portable instrumentation and battery-powered sensor interfaces.
For engineers reviewing the AD7476ARTZ-500RL7 datasheet, AD7476ARTZ-500RL7 pinout, AD7476ARTZ-500RL7 application, or AD7476ARTZ-500RL7 equivalent, key selection factors include its 12-bit resolution, 1 MSPS throughput, 6-lead SOT-23 footprint, internal VDD-referenced architecture, and guaranteed no-missed-codes performance across −40°C to +85°C.
Technical Context
The AD7476ARTZ-500RL7 implements a standard successive-approximation register (SAR) architecture with track-and-hold amplifier supporting >6 MHz input 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 VDD as the internal reference, enabling full-scale analog input range of 0 V to VDD. Timing is fully controlled by external SCLK (up to 20 MHz), with conversion time fixed at 16 SCLK cycles and no latency between sample initiation and result availability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - delivers 4096 discrete output codes with guaranteed no missing codes. |
| Throughput Rate | 1 MSPS - supports real-time sampling of signals up to ~500 kHz Nyquist bandwidth. |
| SNR @ 100 kHz | 70 dB min - enables accurate digitization of medium-frequency sensor or audio-band signals. |
| Supply Range | 2.35 V to 5.25 V - compatible with single-cell Li-ion (3.0–3.7 V), 3.3 V, and 5 V logic domains. |
| Power @ 3 V / 1 MSPS | 4.2 mW - allows integration into ultra-low-power systems without thermal derating. |
| Aperture Jitter | 30 ps typ - limits sampling uncertainty, preserving dynamic performance at high input frequencies. |
| INL / DNL | ±1.5 LSB max / −0.9/+1.5 LSB max - ensures monotonicity and predictable transfer function linearity. |
Pinout & Package
AD7476ARTZ-500RL7 is housed in a Pb-free, RoHS-compliant 6-lead SOT-23 package (2.9 mm × 1.6 mm × 1.1 mm body, 0.95 mm pitch), optimized for space-constrained PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Power supply input | Single 2.35–5.25 V rail powers analog core, digital interface, and serves as internal reference voltage source. |
| 2 - GND | Analog ground reference | Common return path for analog circuitry; must be low-impedance and separated from digital ground at system level. |
| 3 - VIN | Analog input channel | Single-ended input with 0 V to VDD range; 30 pF input capacitance requires careful driver impedance matching. |
| 4 - SCLK | Serial clock input | Controls conversion timing and data readout; accepts 10 kHz–20 MHz CMOS-level clock with 40/60 mark/space ratio. |
| 5 - SDATA | Serial data output | Three-state CMOS output; delivers 12-bit result MSB-first preceded by four leading zeros, synchronized to SCLK falling edge. |
| 6 - CS | Chip select / conversion trigger | Active-low signal that initiates sampling on falling edge and frames serial data transfer; supports burst-mode operation. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True SAR behavior: conversion completes within 16 SCLK cycles with deterministic timing and zero latency between CS assertion and result validity. |
| VDD-referenced architecture | Eliminates need for external reference; maximizes dynamic range by scaling full-scale input to supply voltage (0 V to VDD). |
| Flexible power management | 1 μA shutdown current enables rapid entry/exit from low-power state without reset or calibration loss. |
| SPI/QSPI/MICROWIRE compatibility | Direct interoperability with common microcontroller peripherals reduces firmware development effort and eliminates protocol translation logic. |
| Wide input bandwidth | 6.5 MHz full-power bandwidth supports anti-aliasing filter design for signals up to 100 kHz with minimal passband ripple. |
Applications
| Battery-Powered Data Loggers | Portable Medical Sensors |
|---|---|
|
Use Scenario: Continuous monitoring of ECG, temperature, or blood oxygen via low-power MCU with intermittent wireless upload. IC Role / Device Role / Timing Role: Primary analog front-end digitizer acquiring conditioned biopotential signals at ≤1 MSPS with minimal quiescent current. Use Value: 4.2 mW power at 3 V enables >1-week runtime on coin-cell batteries; 12-bit resolution captures subtle waveform morphology changes. |
Use Scenario: Handheld pulse oximeter requiring compact, low-noise signal chain for photodiode current measurement. IC Role / Device Role / Timing Role: High-fidelity digitizer for transimpedance-amplified optical sensor outputs, synchronized to LED drive timing. Use Value: 70 dB SNR preserves signal integrity in low-light conditions; SOT-23 footprint minimizes board area in palm-sized enclosure. |
| Industrial Field Transmitters | Optical Communication Receivers |
|
Use Scenario: 4–20 mA loop-powered sensor node measuring pressure or humidity in harsh environments. IC Role / Device Role / Timing Role: Precision ADC interfacing with ratiometric bridge sensors and isolated power rails. Use Value: Internal VDD reference eliminates external reference drift errors; −40°C to +85°C rating ensures reliability in uncontrolled enclosures. |
Use Scenario: Low-cost fiber-optic link receiver monitoring photodiode current for signal strength and fault detection. IC Role / Device Role / Timing Role: Fast-sampling digitizer capturing transient optical events (e.g., laser pulse edges or fault surges). Use Value: 1 MSPS throughput resolves sub-microsecond optical events; 30 ps aperture jitter maintains timing accuracy in high-speed detection. |
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, 8-pin SOIC; requires external reference; higher INL (±2 LSB max); 2.7–5.25 V supply. | Lower speed and larger package limit use in space- and throughput-constrained designs. | Choose when external reference control or legacy SOIC layout compatibility is required over size or speed. |
| MAX1116EUT+T | 12-bit, 1 MSPS, SOT-23-6; internal reference; 2.7–3.6 V only; 68 dB SNR @ 100 kHz; higher power (6.5 mW @ 3 V). | Narrower supply range and reduced SNR restrict use in wide-voltage or high-dynamic-range systems. | Choose only for cost-sensitive 3.3 V-only applications where 2 dB SNR margin is acceptable. |
Compared with ADS7822IDR and MAX1116EUT+T, AD7476ARTZ-500RL7 uniquely combines 1 MSPS speed, 6-lead SOT-23 packaging, 70 dB SNR, and 2.35–5.25 V operation - making it optimal for miniaturized, multi-supply industrial and medical edge devices requiring deterministic latency and no-missed-codes assurance.
Availability
AD7476ARTZ-500RL7 is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical sensors, and industrial field transmitters requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AD7476ARTZ-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 AD7476 family was designed specifically for space- and power-constrained data acquisition systems requiring fast, precise, and reliable 12-/10-/8-bit conversion without pipeline artifacts or external references.
FAQ
What is the maximum sampling rate supported by the AD7476ARTZ-500RL7?
The AD7476ARTZ-500RL7 supports a maximum throughput rate of 1 MSPS under specified conditions (VDD = 2.7–5.25 V, fSCLK = 20 MHz). This is achieved using 16 SCLK cycles per conversion, meaning the minimum SCLK period is 100 ns. At lower supply voltages (e.g., 2.35 V), the maximum rate remains 1 MSPS but requires verification against timing specifications in Table 4 of the datasheet.
Does the AD7476ARTZ-500RL7 require an external voltage reference?
No, the AD7476ARTZ-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, simplifies BOM, and avoids reference-related drift or noise coupling - a key advantage in compact, low-cost systems.
How is data formatted and clocked out of the AD7476ARTZ-500RL7?
The AD7476ARTZ-500RL7 outputs 12-bit conversion results MSB-first on the SDATA pin, synchronized to the falling edge of SCLK. Each frame begins with four leading zeros, followed by the 12 data bits. The CS signal must remain low for the entire 16-clock cycle duration to ensure valid data capture.
What is the guaranteed operating temperature range for the AD7476ARTZ-500RL7?
The AD7476ARTZ-500RL7 is rated for the commercial temperature range of −40°C to +85°C. This is confirmed in the Ordering Guide and Absolute Maximum Ratings sections of the Rev. F datasheet, and applies to all A-version parts including AD7476ARTZ-500RL7.
Can the AD7476ARTZ-500RL7 interface directly with common microcontrollers?
Yes, the AD7476ARTZ-500RL7 features SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface logic. It operates with standard CMOS voltage levels (VINH ≥ 2.4 V, VINL ≤ 0.4 V at VDD = 3 V), supports 3-wire mode (CS, SCLK, SDATA), and requires no level-shifting when interfaced with 3.3 V or 5 V microcontrollers.
AD7476ARTZ-500RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6
- 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:
- SOT-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7476ARTZ-500RL7 FAQ
1.How can I place an order for AD7476ARTZ-500RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7476ARTZ-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 AD7476ARTZ-500RL7 reliable?
The price and inventory of AD7476ARTZ-500RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7476ARTZ-500RL7 is usually 5 days.
3.What payment methods are accepted for AD7476ARTZ-500RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7476ARTZ-500RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7476ARTZ-500RL7?
AD7476ARTZ-500RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7476ARTZ-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 AD7476ARTZ-500RL7?
For technical support, including AD7476ARTZ-500RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7476ARTZ-500RL7 requirements.
6.How does Aetrix verify that AD7476ARTZ-500RL7 is sourced from the original manufacturer or authorized distributors?
All AD7476ARTZ-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 AD7476ARTZ-500RL7 meets industry standards.
7.What is the process for return or replacement of AD7476ARTZ-500RL7?
All AD7476ARTZ-500RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7476ARTZ-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 AD7476ARTZ-500RL7 part is unused and in its original packaging.
Return procedure for AD7476ARTZ-500RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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