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Analog Devices Inc. AD7476AAKSZ-REEL7
- Part No.:
- AD7476AAKSZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
AD7476AAKSZ-REEL7.pdf
- Description:
- IC ADC 12BIT SAR SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,761
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Product details
Overview
AD7476AAKSZ-REEL7 from Analog Devices is a 12-bit, single-channel, successive-approximation analog-to-digital converter (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-sampling on the falling edge of CS with SPI/QSPI/MICROWIRE-compatible serial interface. It is used in portable medical instruments requiring high-speed, low-power digitization of analog sensor signals.
For engineers reviewing the AD7476AAKSZ-REEL7 datasheet, AD7476AAKSZ-REEL7 pinout, AD7476AAKSZ-REEL7 application, or AD7476AAKSZ-REEL7 equivalent, this page provides verified technical context, exact pin functions, real-world use-value metrics, and validated alternative options for battery-powered, space-constrained signal acquisition systems.
Technical Context
The AD7476AAKSZ-REEL7 implements a standard successive-approximation register (SAR) architecture with integrated track-and-hold, enabling precise sampling control via the CS input and eliminating pipeline latency. Its conversion timing is fully synchronous to the external SCLK, requiring exactly 16 clock cycles per 12-bit result.
It uses an internal VDD-referenced ADC architecture-no external reference required-yielding a 0 V to VDD analog input range. Power management is controlled through CS assertion and a dedicated power-down mode drawing ≤1 µA, making it suitable for duty-cycled sensing applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit-supports 4096 discrete digital levels for precision sensor digitization |
| Throughput Rate | 1 MSPS-enables real-time capture of signals up to ~13 MHz full-power bandwidth |
| SNR @ 100 kHz | 71 dB min-ensures clean digitization of medium-frequency analog waveforms |
| 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 sustained operation in thermally constrained PCBs |
| Aperture Jitter | 30 ps typ-limits sampling uncertainty for high-fidelity time-domain measurements |
| INL | ±1.5 LSB max-guarantees monotonicity and predictable transfer function across temperature |
Pinout & Package
AD7476AAKSZ-REEL7 is housed in a 6-lead SC70 package (2.0 mm × 1.25 mm, 0.9 mm height), optimized for ultra-compact PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Single 2.35–5.25 V rail powers analog and digital sections; also serves as internal reference source |
| GND | Analog ground reference | Common return for all analog circuitry; must be isolated from noisy digital ground in layout |
| VIN | Analog input channel | Single-ended input with 0 V to VDD range; 20 pF input capacitance requires careful driver impedance matching |
| CS | Chip select / conversion trigger | Active-low signal initiates sampling on falling edge and frames serial data output |
| SDATA | Serial data output | Three-state CMOS output delivering 12-bit result MSB-first with four leading zeros |
| SCLK | Serial clock input | Controls both data readout timing and internal conversion clock; supports up to 20 MHz |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True SAR architecture enables deterministic, single-cycle conversion control-critical for time-triggered embedded systems |
| Flexible power management | 1 µA max standby current and dynamic power scaling via SCLK rate allow adaptive energy use in intermittent-sampling applications |
| VDD-referenced design | Eliminates need for external voltage reference IC or precision resistor network-reduces BOM count and layout area |
| SC70 footprint | Smallest available package for 12-bit 1 MSPS ADCs-enables integration into wearables and handheld diagnostics tools |
| SPI/QSPI/MICROWIRE compatibility | Direct interface to common microcontrollers (e.g., STM32, MSP430, ADSP) without protocol translation logic |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Digitizing ECG or pulse oximetry analog front-end outputs in handheld diagnostic devices. IC Role / Device Role / Timing Role: Primary 12-bit ADC capturing biopotential waveforms at ≥1 kSPS with minimal power draw between samples. Use Value: 71 dB SNR ensures clinical-grade fidelity; 1 µA standby current extends battery life to >6 months on coin-cell power. |
Use Scenario: Recording environmental sensor data (temperature, humidity, pressure) in field-deployed IoT nodes. IC Role / Device Role / Timing Role: Low-duty-cycle ADC activated only during scheduled measurement windows to conserve energy. Use Value: VDD-referenced operation eliminates external reference drift; SC70 size allows placement directly adjacent to MEMS sensors. |
| Optical Sensor Interfaces | Industrial Handheld Testers |
Use Scenario: Converting photodiode or ambient light sensor outputs in compact optical modules. IC Role / Device Role / Timing Role: High-input-bandwidth ADC handling fast transient responses from light pulses or modulated IR signals. Use Value: 13.5 MHz full-power bandwidth supports accurate capture of pulsed optical events; 30 ps aperture jitter preserves timing integrity. |
Use Scenario: Signal conditioning and digitization in portable multimeters or calibration tools. IC Role / Device Role / Timing Role: Precision ADC providing stable readings under variable supply conditions (e.g., depleting battery). Use Value: ±1.5 LSB INL and gain/offset error specs ensure repeatable measurements across 2.35–5.25 V supply range without recalibration. |
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 |
|---|---|---|---|
| ADS7822IDGKR | 12-bit, 200 kSPS, 2.7–5.25 V, 8-lead VSSOP; SPI-compatible but slower and larger package | Limited to lower-speed sensor monitoring; lacks SC70 footprint and 1 MSPS capability | Choose when board space is less constrained and throughput < 200 kSPS suffices |
| MAX1116EKA+T | 12-bit, 1 MSPS, 2.7–3.6 V only, 6-lead SOT23; no VDD-referenced design-requires external reference | Not suitable for wide-supply or reference-free designs; incompatible with 5 V or sub-2.7 V operation | Choose only for fixed 3 V systems where external reference is already present |
Compared with ADS7822IDGKR and MAX1116EKA+T, AD7476AAKSZ-REEL7 uniquely combines 1 MSPS speed, true SC70 size, VDD-referenced simplicity, and 2.35–5.25 V operation-making it the sole option meeting all four requirements simultaneously in space- and power-sensitive designs.
Availability
AD7476AAKSZ-REEL7 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 AD7476AAKSZ-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 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 ultra-compact, low-power, high-speed data acquisition in portable and battery-operated instrumentation-prioritizing SC70 integration, supply flexibility, and deterministic SAR timing.
FAQ
What is the maximum sampling rate supported by the AD7476AAKSZ-REEL7?
The AD7476AAKSZ-REEL7 supports a maximum throughput rate of 1 MSPS, achieved with a 20 MHz SCLK and 16 serial clock cycles per conversion. At lower SCLK frequencies, the effective sampling rate scales linearly-for example, 10 MHz SCLK yields 500 kSPS. The part guarantees performance across its full 2.35 V to 5.25 V supply range at this rate.
Does the AD7476AAKSZ-REEL7 require an external voltage reference?
No, the AD7476AAKSZ-REEL7 uses an internal VDD-referenced architecture, meaning its full-scale analog input range is 0 V to VDD. This eliminates the need for an external reference IC or resistor divider, simplifying design and reducing component count-especially valuable in space-constrained applications like wearable medical devices.
What is the purpose of the four leading zeros in the AD7476AAKSZ-REEL7 serial data stream?
The AD7476AAKSZ-REEL7 outputs four leading zeros followed by the 12-bit conversion result (MSB first). This fixed 16-bit frame format ensures consistent timing and simplifies firmware parsing across the AD7476A/AD7477A/AD7478A family-allowing shared driver code for 12-, 10-, and 8-bit variants while maintaining hardware compatibility.
How does the AD7476AAKSZ-REEL7 manage power in low-duty-cycle applications?
The AD7476AAKSZ-REEL7 enters full power-down mode when CS remains high, drawing ≤1 µA (typically 50 nA). Upon CS assertion, it powers up in ≤1 µs and begins conversion-enabling ultra-low average power in burst-mode sensing. At 1 MSPS, active power is 5.1 mW max (5 V) or 3.6 mW max (3 V), scaling linearly with throughput.
Is the AD7476AAKSZ-REEL7 pin-compatible with other members of the AD7476A/AD7477A/AD7478A family?
Yes-the AD7476AAKSZ-REEL7 shares identical 6-lead SC70 pinout, interface protocol, and timing behavior with AD7477A and AD7478A variants. This allows hardware reuse across resolution grades; only firmware must adjust for differing bit lengths and leading/trailing zero patterns in the serial data stream.
AD7476AAKSZ-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:
- -
AD7476AAKSZ-REEL7 FAQ
1.How can I place an order for AD7476AAKSZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7476AAKSZ-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 AD7476AAKSZ-REEL7 reliable?
The price and inventory of AD7476AAKSZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7476AAKSZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7476AAKSZ-REEL7?
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4.How is shipping managed for AD7476AAKSZ-REEL7?
AD7476AAKSZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7476AAKSZ-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 AD7476AAKSZ-REEL7?
For technical support, including AD7476AAKSZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7476AAKSZ-REEL7 requirements.
6.How does Aetrix verify that AD7476AAKSZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7476AAKSZ-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 AD7476AAKSZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7476AAKSZ-REEL7?
All AD7476AAKSZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7476AAKSZ-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 AD7476AAKSZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7476AAKSZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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