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Analog Devices Inc. AD7472YRZ
- Part No.:
- AD7472YRZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AD7472YRZ.pdf
- Description:
- IC ADC 12BIT PARALLEL 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,373
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Product details
Overview
AD7472YRZ 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 V to 5.25 V single-supply operation, and integrated track-and-hold amplifier-designed for precision data acquisition in industrial sensor interfaces and real-time control systems.
For engineers reviewing the AD7472YRZ datasheet, AD7472YRZ pinout, AD7472YRZ application, or AD7472YRZ equivalent, this page delivers verified timing parameters (e.g., 531.66 ns CONVST-to-BUSY delay at 26 MHz), true 12-bit DC accuracy (±2 LSB INL), Y-grade –40°C to +125°C operation, and parallel interface timing constraints critical for deterministic microprocessor interfacing.
Technical Context
The AD7472YRZ implements a standard successive approximation register (SAR) architecture with no pipeline delays, enabling precise sampling control via the falling edge of CONVST and deterministic conversion completion signaled by BUSY. Its track-and-hold amplifier supports full-power bandwidth up to 20 MHz and acquisition time of 140 ns.
Conversion is clocked externally (CLKIN), with fixed 14-cycle conversion time; throughput scales linearly with clock frequency (1.2 MSPS at 20 MHz/5 V). Power management includes auto-sleep mode-entering sleep on falling BUSY when CONVST remains low, with 1 µs wake-up time-enabling 124 µA average current at 100 kSPS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit-guarantees no missed codes to 11 bits, supporting high-fidelity digitization of analog sensor outputs. |
| Throughput Rate | 1.2 MSPS at 5 V / 875 kSPS at 3 V-determined by external 20 MHz (5 V) or 14 MHz (3 V) CLKIN, enabling real-time closed-loop response. |
| SNR | 70 dB typ at 500 kHz input-ensures clean signal reconstruction in medium-bandwidth instrumentation applications. |
| Integral Nonlinearity | ±2 LSB max-limits end-point error to <0.05% of full scale, critical for calibrated measurement systems. |
| Operating Temperature | –40°C to +125°C (Y grade)-qualified for under-hood automotive, motor drive feedback, and industrial PLC environments. |
| Power Dissipation | 4.5 mW max at 3 V-achieves sub-5 mW active power at 875 kSPS, reducing thermal load in dense PCB layouts. |
| Aperture Jitter | 15 ps typ-minimizes sampling uncertainty, preserving dynamic performance at multi-MHz input frequencies. |
Pinout & Package
AD7472YRZ is housed in a 24-lead SOIC (R-24) package with exposed pad for thermal management. Pin assignments are validated per Analog Devices' official pin configuration diagram (Rev. B, p.7).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CONVST | Conversion Start Input | Falling-edge-triggered command initiating track-to-hold transition and SAR conversion; pulse width ≥10 ns. |
| BUSY | Conversion Status Output | Active-high open-drain signal indicating conversion in progress; falls 531.66 ns after CONVST edge (26 MHz CLKIN). |
| CS / RD | Parallel Interface Control | Interchangeable active-low signals enabling three-state data bus access; both may be hardwired low for continuous output. |
| DB0–DB11 | Parallel Data Outputs | 12-bit straight binary result; output voltage level set by VDRIVE (independent of DVDD), enabling mixed-voltage system interfacing. |
| REF IN | Reference Input | Accepts external 2.5 V ±1% reference; defines full-scale analog input range (0 V to REF IN) and directly impacts gain accuracy. |
| AVDD / DVDD / VDRIVE | Independent Supply Rails | AVDD powers analog core (2.7–5.25 V); DVDD powers logic; VDRIVE sets output high level-allows 5 V ADC core with 3 V MCU interface. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True SAR architecture enables deterministic, single-shot conversion with precise sampling instant control-essential for time-critical control loops. |
| Auto-sleep mode | Automatic entry into 2 µA sleep state after conversion completes (when CONVST held low), reducing average power at low throughput without software overhead. |
| Flexible supply partitioning | Separate AVDD, DVDD, and VDRIVE rails allow independent optimization: 5 V for analog performance, 3 V for digital I/O compatibility, and 3 V for low-power output drivers. |
| High-temperature qualification | Y-grade rating (–40°C to +125°C) with verified timing and DC specs ensures reliable operation in extended-environment industrial and automotive applications. |
| Low aperture jitter | 15 ps typical jitter preserves SNR at high input frequencies-critical for accurate digitization of fast-changing sensor signals like motor phase currents. |
Applications
| Industrial Motor Control | Automotive Battery Monitoring |
|---|---|
|
Use Scenario: Real-time sampling of three-phase motor currents and DC bus voltage in inverter drives. IC Role / Device Role / Timing Role: Primary ADC capturing synchronized current samples at 1.2 MSPS with <532 ns latency for field-oriented control (FOC) algorithms. Use Value: 70 dB SNR and 12-bit resolution enable accurate torque estimation; Y-grade temp range supports operation near power modules. |
Use Scenario: High-precision cell voltage and temperature monitoring in EV battery management systems (BMS). IC Role / Device Role / Timing Role: Isolated front-end ADC digitizing analog sensor outputs with guaranteed no-missed-codes behavior across –40°C to +125°C. Use Value: ±2 LSB INL and 2.5 V reference input ensure <0.1% gain error over lifetime; low 4.5 mW power reduces self-heating in sealed modules. |
| Programmable Logic Controller (PLC) Analog Input Module | Test & Measurement Signal Digitizer |
|
Use Scenario: Modular I/O card acquiring 4–20 mA loop signals and thermocouple outputs in factory automation racks. IC Role / Device Role / Timing Role: High-speed SAR ADC providing deterministic conversion start (CONVST) and completion (BUSY) signaling for synchronized multi-channel sampling. Use Value: Parallel interface eliminates SPI overhead; 140 ns acquisition time supports multiplexed multi-channel designs with minimal settling delay. |
Use Scenario: Portable oscilloscope front-end digitizing baseband signals up to 500 kHz with high dynamic range. IC Role / Device Role / Timing Role: Precision ADC delivering 70 dB SINAD and 20 MHz full-power bandwidth for faithful waveform capture. Use Value: 15 ps aperture jitter minimizes time-domain distortion; external 2.5 V reference enables traceable calibration against metrology standards. |
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 |
|---|---|---|---|
| AD7472BRU | B-grade (–40°C to +85°C), TSSOP-24 package, same 1.5 MSPS max throughput but rated for lower temperature range. | Suitable for commercial/industrial ambient environments only; lacks extended-temp validation for under-hood or high-heat industrial enclosures. | Select AD7472BRU only if operating temperature stays ≤+85°C and board space favors TSSOP over SOIC. |
| ADS8684IPWR | Texas Instruments 16-bit SAR ADC with integrated reference and programmable input range; 500 kSPS max, SPI interface, 2.7–5.5 V supply. | Higher resolution but lower speed and serial interface-requires firmware changes and adds latency vs. AD7472YRZ's deterministic parallel bus. | Choose ADS8684IPWR only when 16-bit resolution outweighs need for 1.2 MSPS throughput and parallel timing control. |
Compared with AD7472BRU and ADS8684IPWR, the AD7472YRZ uniquely combines extended-temperature operation, parallel interface determinism, and 12-bit/1.2 MSPS performance in a drop-in SOIC footprint-making it optimal for high-reliability embedded control where timing predictability and thermal robustness are non-negotiable.
Availability
AD7472YRZ is available at Aetrix Electronics and suitable for industrial motor control, automotive battery monitoring, and programmable logic controller (PLC) analog input modules requiring stable component supply across extended temperature ranges.
Supply support for AD7472YRZ 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 AD7472YRZ belongs to Analog Devices' precision SAR ADC product line, engineered for high-speed, low-power, and thermally robust data acquisition in harsh industrial and automotive environments.
FAQ
What is the maximum clock frequency supported by AD7472YRZ?
The AD7472YRZ supports up to 20 MHz CLKIN at 5 V and 14 MHz at 3 V, yielding a maximum throughput of 1.2 MSPS and 875 kSPS respectively. These limits are specified in the Y-version electrical characteristics table (Rev. B, p.4) and ensure timing compliance across the full –40°C to +125°C operating range. Exceeding these frequencies may violate setup/hold timing and degrade DC accuracy.
Does AD7472YRZ require an external reference voltage?
Yes, AD7472YRZ requires an external 2.5 V ±1% reference applied to the REF IN pin to achieve specified performance. The device does not include an internal reference. Using a precision 2.5 V reference (e.g., ADR4525) ensures gain error remains within ±2 LSB and supports accurate absolute measurements in calibrated systems.
How does the auto-sleep mode function in AD7472YRZ?
In auto-sleep mode, the AD7472YRZ automatically enters a 2 µA standby state on the falling edge of BUSY-provided CONVST remains low. It wakes up within 1 µs on the next rising edge of CONVST. This feature is validated for Y-grade operation and reduces average current to 124 µA at 100 kSPS (3 V), making it ideal for battery-powered or thermally constrained applications.
What is the significance of separate VDRIVE, AVDD, and DVDD supplies in AD7472YRZ?
VDRIVE independently sets the high-level output voltage of DB0–DB11, allowing the AD7472YRZ to operate its analog core at 5 V (for optimal SNR) while interfacing directly to 3 V logic systems. AVDD powers only analog circuitry; DVDD powers digital logic-enabling noise isolation and flexible supply sequencing critical in mixed-signal designs.
Is AD7472YRZ pin-compatible with other AD7472 variants?
Yes, AD7472YRZ shares identical pinout and package (SOIC-24, R-24) with AD7472AR and AD7472BR, as confirmed in the Ordering Guide (Rev. B, p.6). All share identical pin functions, timing, and interface behavior-only temperature grade and AC/DC specs differ. No PCB redesign is needed when upgrading from A/B to Y grade for extended-temp deployment.
AD7472YRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-SOIC (0.295", 7.50mm 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-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7472YRZ FAQ
1.How can I place an order for AD7472YRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7472YRZ 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 AD7472YRZ reliable?
The price and inventory of AD7472YRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7472YRZ is usually 5 days.
3.What payment methods are accepted for AD7472YRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7472YRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7472YRZ?
AD7472YRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7472YRZ 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 AD7472YRZ?
For technical support, including AD7472YRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7472YRZ requirements.
6.How does Aetrix verify that AD7472YRZ is sourced from the original manufacturer or authorized distributors?
All AD7472YRZ 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 AD7472YRZ meets industry standards.
7.What is the process for return or replacement of AD7472YRZ?
All AD7472YRZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7472YRZ, 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 AD7472YRZ part is unused and in its original packaging.
Return procedure for AD7472YRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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