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Analog Devices Inc. AD7472YRUZ
- Part No.:
- AD7472YRUZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7472YRUZ.pdf
- Description:
- IC ADC 12BIT PARALLEL 24-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,525
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Product details
Overview
AD7472YRUZ from Analog Devices is a 12-bit, 1.2 MSPS high-speed successive approximation ADC with 70 dB typical SNR at 500 kHz input, 2.7–5.25 V dual-supply operation (AVDD/DVDD), and integrated track-and-hold amplifier. It delivers 4.5 mW typical power at 3 V, supports external 2.5 V reference, and targets precision data acquisition in industrial sensor interfaces and real-time control systems.
For engineers reviewing the AD7472YRUZ datasheet, AD7472YRUZ pinout, AD7472YRUZ application, or AD7472YRUZ equivalent, key selection considerations include its Y-grade (–40°C to +125°C) temperature rating, TSSOP-24 package, parallel 12-bit DB0–DB11 interface, sleep-mode current of 2 µA, and guaranteed no-missed-codes performance to 11 bits.
Technical Context
The AD7472YRUZ implements a standard SAR architecture with precise sampling controlled by the falling edge of CONVST and no pipeline delay. Conversion timing is fully synchronous to an externally supplied clock (up to 20 MHz at 5 V), requiring exactly 14 CLK IN cycles for completion.
Its analog front-end features a wide-bandwidth track-and-hold amplifier (20 MHz full-power bandwidth) and supports single-ended VIN input referenced to AGND, with input range 0 V to REF IN (2.5 V ±1%). Digital I/O uses separate DVDD and VDRIVE supplies to enable mixed-voltage interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - provides 4096 discrete output levels for high-fidelity signal digitization |
| Throughput Rate | 1.2 MSPS at 5 V / 875 kSPS at 3 V - enables real-time sampling of fast transients in motor control or power monitoring |
| SNR | 70 dB typ @ 500 kHz - ensures clean digitization of medium-frequency sensor signals with minimal noise floor impact |
| Integral Nonlinearity | ±2 LSB max - guarantees monotonicity and supports accurate calibration in closed-loop feedback systems |
| Power Dissipation | 4.5 mW max at 3 V - allows integration into thermally constrained industrial modules without active cooling |
| Sleep Current | 2 µA max - enables ultra-low-power wake-on-event operation in battery-backed condition monitoring nodes |
| Aperture Jitter | 15 ps typ - limits sampling uncertainty to <0.03% of 12-bit LSB at 100 kHz, preserving dynamic accuracy |
Pinout & Package
AD7472YRUZ is housed in a 24-lead TSSOP package (RU-24), optimized for compact industrial PCB layouts and compatible with standard surface-mount reflow profiles. Thermal impedance is 115°C/W (θJA).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DB0–DB11 | Parallel digital output bus | 12-bit straight binary result; three-state driven by CS/RD; output voltage level set by VDRIVE |
| CONVST | Conversion start trigger | Falling-edge–initiated sampling and conversion; also controls auto-sleep entry on sustained low state |
| BUSY | Conversion status indicator | Active-high open-drain signal; goes low 531.66 ns after CONVST fall (26 MHz clock) to signal data readiness |
| CS / RD | Parallel interface control | Interchangeable active-low signals enabling direct connection to microcontroller address/data buses |
| VIN | Analog input channel | Single-ended input with 33 pF capacitance and ±1 µA leakage; range 0 V to REF IN (2.5 V) |
| REF IN | Reference voltage input | Accepts external 2.5 V ±1% reference; determines full-scale range and directly impacts gain accuracy |
| AVDD / DVDD | Analog/digital supply rails | 2.7–5.25 V each; must be within 0.3 V of each other; require local decoupling to AGND/DGND respectively |
| VDRIVE | Output driver supply | Independent 2.7–5.25 V rail setting VOH = VDRIVE – 0.2 V; enables 5 V ADC core interfacing to 3 V logic |
| AGND / DGND | Analog/digital ground references | Separate pins for noise isolation; must be tied together at single point with <0.3 V potential difference |
| CLK IN | Master conversion clock | Externally driven up to 20 MHz (5 V); defines throughput rate and conversion time (14 cycles per sample) |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True single-cycle conversion with deterministic latency (14 CLK IN + 140 ns acquisition), enabling precise timing-critical control loops |
| Auto sleep mode | Automatic entry into 2 µA sleep state after conversion completes if CONVST remains low - eliminates software overhead for power management |
| Mixed-voltage I/O support | VDRIVE pin allows independent 3 V output drive while AVDD/DVDD operate at 5 V - simplifies interface to diverse logic families |
| Guaranteed no-missed-codes | Valid to 11 bits (Y version) - ensures monotonic response across full range, critical for position/speed feedback in motion control |
| High-temperature operation | Rated for –40°C to +125°C (Y grade) - qualified for under-hood automotive sensors and industrial motor drives |
Applications
| Industrial Motor Control | Automotive Engine Sensing |
|---|---|
|
Use Scenario: Real-time sampling of phase currents and back-EMF in 3-phase inverter drives. IC Role / Device Role / Timing Role: Primary ADC capturing synchronized current waveforms at ≥1 MSPS with sub-µs timing determinism. Use Value: 12-bit resolution and 70 dB SNR preserve torque ripple signatures; 125°C rating enables placement near IGBT gate drivers. |
Use Scenario: Digitizing cylinder pressure and knock sensor outputs in engine control units. IC Role / Device Role / Timing Role: High-fidelity analog front-end converting fast transient mechanical events into digital domain. Use Value: 20 MHz full-power bandwidth captures >5 MHz resonance peaks; Y-grade temp range ensures reliability in under-hood environments. |
| Portable Test Equipment | Energy Metering Front-End |
|
Use Scenario: Battery-powered oscilloscope modules requiring high dynamic range and low standby power. IC Role / Device Role / Timing Role: Core digitizer enabling 1.2 MSPS capture with automatic sleep between triggers. Use Value: 2 µA sleep current extends battery life; parallel interface reduces MCU processing load versus SPI alternatives. |
Use Scenario: Precision voltage/current sampling in Class 0.2 polyphase electricity meters. IC Role / Device Role / Timing Role: Metrology-grade ADC providing calibrated 12-bit samples for harmonic analysis. Use Value: ±2 LSB INL and guaranteed no-missed-codes support ANSI C12.20 compliance; external 2.5 V reference enables system-level calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit parallel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7472BRU | B-grade (–40°C to +85°C); same 12-bit/1.5 MSPS spec at 5 V but lower temp range | Suitable for commercial-grade instrumentation where extended temperature is not required | Select AD7472BRU when operating ambient stays below 85°C and higher throughput (1.5 MSPS) is needed |
| ADS7822U | 12-bit, 250 kSPS, SPI interface, single-supply 2.7–5.5 V; no external reference required | Targets space-constrained designs needing serial interface and integrated reference | Choose ADS7822U for low-pin-count, low-throughput applications where PCB area and BOM count outweigh parallel speed needs |
Compared with AD7472BRU, AD7472YRUZ trades 300 kSPS throughput for +40°C operational margin and automotive-grade reliability; versus ADS7822U, it delivers 4.8× higher speed and deterministic parallel timing at the cost of external reference and two supply rails.
Availability
AD7472YRUZ is available at Aetrix Electronics and suitable for industrial motor control, automotive engine sensing, and portable test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7472YRUZ 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 AD7472YRUZ belongs to the AD7470/AD7472 family of high-speed SAR ADCs designed specifically for industrial and automotive data acquisition where low power, wide bandwidth, and extended temperature operation are mandatory.
FAQ
What is the maximum clock frequency supported by AD7472YRUZ?
The AD7472YRUZ supports a maximum CLK IN frequency of 20 MHz at 5 V and 14 MHz at 3 V, as specified for the Y version in the datasheet. This yields a maximum throughput rate of 1.2 MSPS at 5 V and 875 kSPS at 3 V. Exceeding these frequencies may cause timing violations or conversion errors, and is not guaranteed across the full –40°C to +125°C operating range.
Does AD7472YRUZ require an external reference voltage?
Yes, AD7472YRUZ requires an external 2.5 V ±1% reference applied to the REF IN pin. The device does not include an internal reference. Using a precision external reference directly determines full-scale accuracy and gain error performance; deviation beyond ±1% degrades DC specifications such as INL and gain error as documented in the Y-version specifications table.
How does the auto sleep mode function on AD7472YRUZ?
When CONVST remains low after conversion completion, AD7472YRUZ automatically enters sleep mode on the falling edge of BUSY, reducing current consumption to 2 µA max. A rising edge on CONVST wakes the device in ≤1 µs. This behavior is intrinsic to the Y version's design and requires no firmware intervention, making it ideal for event-triggered acquisition in energy-sensitive applications.
What is the purpose of the VDRIVE pin on AD7472YRUZ?
The VDRIVE pin on AD7472YRUZ sets the high-level output voltage (VOH = VDRIVE – 0.2 V) for the DB0–DB11 parallel data bus. It enables independent configuration of digital output swing-e.g., 3 V logic interfacing-while AVDD/DVDD operate at 5 V for optimal analog performance. This separation avoids level-shifter components and simplifies mixed-voltage system integration.
Is AD7472YRUZ pin-compatible with other AD7472 variants?
Yes, AD7472YRUZ shares identical pinout and footprint with all AD7472 variants in the RU-24 (TSSOP-24) package, including AD7472ARU and AD7472BRU. All share the same pin configuration shown in the datasheet top-view diagram, supporting drop-in replacement within the same package variant-though temperature grade, timing specs, and INL/DNL limits differ per version.
AD7472YRUZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1.5M
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- Parallel
- 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 ~ 125°C
- Supplier Device Package:
- 24-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7472YRUZ FAQ
1.How can I place an order for AD7472YRUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7472YRUZ 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 AD7472YRUZ reliable?
The price and inventory of AD7472YRUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7472YRUZ is usually 5 days.
3.What payment methods are accepted for AD7472YRUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7472YRUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7472YRUZ?
AD7472YRUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7472YRUZ 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 AD7472YRUZ?
For technical support, including AD7472YRUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7472YRUZ requirements.
6.How does Aetrix verify that AD7472YRUZ is sourced from the original manufacturer or authorized distributors?
All AD7472YRUZ 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 AD7472YRUZ meets industry standards.
7.What is the process for return or replacement of AD7472YRUZ?
All AD7472YRUZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7472YRUZ, 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 AD7472YRUZ part is unused and in its original packaging.
Return procedure for AD7472YRUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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