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Analog Devices Inc. AD7472YR-REEL7
- Part No.:
- AD7472YR-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AD7472YR-REEL7.pdf
- Description:
- IC ADC 12BIT SAR 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,101
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Product details
Overview
AD7472YR-REEL7 from Analog Devices is a 12-bit, 1.2 MSPS high-speed successive approximation ADC in 24-lead SOIC package, operating from 2.7 V to 5.25 V supply with 4.5 mW typical power at 3 V. It features 70 dB SNR at 500 kHz input, ±2 LSB INL (A-grade), and supports industrial temperature range (–40°C to +125°C). It is used in precision data acquisition systems requiring low-power, wide-bandwidth analog-to-digital conversion.
For engineers reviewing the AD7472YR-REEL7 datasheet, AD7472YR-REEL7 pinout, AD7472YR-REEL7 application, or AD7472YR-REEL7 equivalent, key selection considerations include its 12-bit resolution, 1.2 MSPS throughput at 5 V with 20 MHz clock, sleep-mode current of 2 µA, and parallel interface timing compatibility with microprocessor buses.
Technical Context
The AD7472YR-REEL7 implements a standard successive approximation register (SAR) architecture with track-and-hold amplifier, no pipeline delay, and precise sampling controlled by CONVST falling edge. Conversion time is fixed at 14 CLK IN cycles, with acquisition time of 140 ns minimum after BUSY goes low.
It uses external 2.5 V reference (±1%) applied to REF IN, supports independent VDRIVE for 3 V/5 V logic interfacing, and separates analog (AVDD/AGND) and digital (DVDD/DGND) supplies with strict ≤0.3 V potential difference requirement to maintain DC accuracy and dynamic performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output levels for high-fidelity signal digitization |
| Throughput Rate | 1.2 MSPS at 5 V (20 MHz CLK IN) - enables real-time capture of fast transients in motor control or sensor monitoring |
| SINAD / SNR | 69 dB typ / 70 dB typ at 500 kHz - ensures >11.3 effective bits for demanding measurement applications |
| Integral Nonlinearity | ±2 LSB max (Y version) - guarantees monotonicity and supports closed-loop feedback without code ambiguity |
| Power Dissipation | 4.5 mW max at 3 V - allows battery-powered or thermally constrained embedded designs |
| Sleep Mode Current | 2 µA max at 5 V - enables ultra-low-power wake-on-event operation in condition-monitoring systems |
| Full Power Bandwidth | 20 MHz - supports accurate digitization of signals up to near-Nyquist frequency without attenuation |
Pinout & Package
AD7472YR-REEL7 is housed in a 24-lead SOIC (R-24) package with standard JEDEC MS-013AC footprint (15.4 mm × 7.5 mm, 1.27 mm pitch). Pin 1 is marked with dot; pins are numbered counterclockwise from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 | DB0–DB11 (LSB to MSB) | 12-bit parallel output bus; three-state, level-shifted by VDRIVE; active only when CS and RD both low |
| 13 | CS | Chip select input; active-low; may be hardwired low to simplify interface with microprocessor data bus |
| 14 | RD | Read strobe input; active-low; interchangeable with CS; falling edge latches conversion result onto DBx lines |
| 15 | CONVST | Conversion start trigger; falling edge initiates sampling and conversion; low duration controls auto-sleep entry |
| 16 | CLK IN | Master clock input; 20 MHz max at 5 V; determines conversion time (14 cycles) and throughput rate |
| 17 | BUSY | Open-drain status output; high during conversion; falls 531.66 ns after CONVST (26 MHz case) to signal completion |
| 18 | VIN | Single-ended analog input; 0 V to REF IN range; 33 pF input capacitance; high DC impedance |
| 19 | AGND | Analog ground reference; must be tied to DGND within 0.3 V; separate return path for analog circuitry |
| 20 | DGND | Digital ground reference; ties to AGND; provides return for digital I/O and logic core |
| 21 | REF IN | External 2.5 V reference input; ±1% tolerance required for full spec compliance; 10/20 pF input capacitance |
| 22 | AVDD | Analog supply (2.7–5.25 V); powers SAR core and T/H amplifier; must match DVDD within ±0.3 V |
| 23 | VDRIVE | Output driver supply (2.7–5.25 V); sets VOH level independently of AVDD/DVDD for mixed-voltage interfacing |
| 24 | DVDD | Digital supply (2.7–5.25 V); powers logic and interface circuitry; must match AVDD within ±0.3 V |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True single-shot conversion with deterministic latency (14 CLK IN + 140 ns), enabling precise time-critical sampling in servo loops |
| Flexible power/throughput management | Throughput scales linearly with CLK IN frequency; sleep mode reduces current to 2 µA, supporting duty-cycled sensing |
| Independent VDRIVE supply | Allows AVDD/DVDD at 5 V for optimal analog performance while driving 3 V logic, eliminating level-shifter components |
| Industrial temperature grade | Specified from –40°C to +125°C (Y version), qualified for under-hood automotive, industrial PLC, and power electronics monitoring |
| Guaranteed no missed codes | 11-bit monotonicity assured (Y version), critical for position feedback and closed-loop control where missing codes cause instability |
Applications
| Motor Control Feedback | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Real-time current and voltage sampling in three-phase inverter gate drivers for field-oriented control. IC Role / Device Role / Timing Role: 12-bit parallel ADC capturing analog feedback at 1.2 MSPS with sub-µs latency; synchronized to PWM via CONVST edge. Use Value: Enables <1 µs total sampling-to-action loop delay, improving torque ripple suppression and thermal margin in 20 kHz switching inverters. |
Use Scenario: High-accuracy temperature, pressure, and strain measurements in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Primary digitizer for isolated sensor front-ends; interfaces directly to ARM Cortex-M4 MCU via 8-bit bus multiplexed with address lines. Use Value: Delivers 70 dB SNR at 500 kHz bandwidth, meeting IEC 61000-4-5 surge immunity requirements without additional filtering overhead. |
| Automotive Battery Monitoring | Portable Test Equipment |
|
Use Scenario: Cell voltage and pack current monitoring in 48 V mild-hybrid battery management systems (BMS). IC Role / Device Role / Timing Role: High-speed ADC sampling multiple channels via external multiplexer; operates in auto-sleep mode between samples to extend battery life. Use Value: 2 µA sleep current and 12-bit linearity ensure >10-year shelf life in always-on BMS nodes while maintaining ±1 mV cell voltage accuracy. |
Use Scenario: Handheld oscilloscope and spectrum analyzer front-end for 10 MHz signal analysis. IC Role / Device Role / Timing Role: Core digitizer in dual-channel 12-bit acquisition path; driven by FPGA-generated 20 MHz clock and CONVST timing. Use Value: 20 MHz full-power bandwidth and 70 dB SNR enable clean FFT-based spectral analysis up to 5 MHz without aliasing artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7472AR-REEL7 | Same 12-bit SAR core, but A-grade (–40°C to +85°C); 1.5 MSPS max at 5 V with 26 MHz clock; ±1 LSB INL (tighter than Y version) | Designed for commercial/industrial equipment with ambient temperature limits; not qualified for under-hood or high-ambient environments | Select when full 125°C operation is unnecessary and tighter INL is prioritized over temperature range |
| ADS7822U | 12-bit, 250 kSPS, SPI interface, single-supply 2.7–5.25 V; no external reference required; 1.25 mW at 3 V | Lower speed, serial interface, integrated reference; suited for space-constrained, low-throughput sensor nodes | Select when board area, wiring count, or power budget constrain design more than throughput or parallel bus compatibility |
Compared with AD7472AR-REEL7, the AD7472YR-REEL7 trades ±1 LSB INL for guaranteed operation up to +125°C and relaxed clock timing (20 MHz vs. 26 MHz), making it suitable for automotive and high-reliability industrial use; versus ADS7822U, it offers 4.8× higher throughput and parallel interface but requires external reference and careful grounding partitioning.
Availability
AD7472YR-REEL7 is available at Aetrix Electronics and suitable for motor control feedback, industrial sensor interface, automotive battery monitoring, and portable test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7472YR-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD7470/AD7472 product line delivers high-speed, low-power successive approximation ADCs optimized for real-time data acquisition in industrial automation, motor drives, and instrumentation where deterministic latency and wide input bandwidth are critical.
FAQ
What is the maximum clock frequency supported by AD7472YR-REEL7?
The AD7472YR-REEL7 supports up to 20 MHz CLK IN at 5 V and 14 MHz at 3 V, as specified for the Y version in the Rev. B datasheet. Exceeding these frequencies may violate timing margins for conversion completion and BUSY assertion, leading to invalid data reads. The 20 MHz limit ensures reliable 1.2 MSPS throughput and maintains aperture jitter at 15 ps typ.
Does AD7472YR-REEL7 require an external reference voltage?
Yes, AD7472YR-REEL7 requires an external 2.5 V reference applied to the REF IN pin. The device does not include an internal reference. Performance specifications-including SINAD, SNR, and INL-are guaranteed only when REF IN is 2.5 V ±1%. Deviations outside this range degrade DC accuracy and dynamic performance proportionally.
Can AD7472YR-REEL7 operate with separate 5 V analog and 3 V digital supplies?
No-AD7472YR-REEL7 mandates AVDD and DVDD remain within ±0.3 V of each other at all times, per Absolute Maximum Ratings and layout guidance. However, VDRIVE can be set to 3 V independently to drive 3 V logic outputs while AVDD/DVDD run at 5 V, preserving analog performance and enabling mixed-voltage interfacing without level shifters.
What is the guaranteed no-missed-codes performance of AD7472YR-REEL7?
The AD7472YR-REEL7 guarantees no missed codes to 11 bits, as stated in the Y-version DC Accuracy table. This means all 2048 possible 11-bit codes appear monotonically across the full input range. While resolution is 12 bits, the 12th bit may exhibit minor nonmonotonicity due to ±2 LSB INL; system-level calibration can recover full 12-bit usability where needed.
How does the auto-sleep mode function in AD7472YR-REEL7?
In auto-sleep mode, AD7472YR-REEL7 enters low-power state automatically after conversion completes and BUSY goes low-if CONVST remains low. Wake-up occurs on the next rising edge of CONVST, with typical wake-up time of 1 µs. At 100 kSPS and 5 V, this yields average current of 171 µA; at 3 V, it drops to 124 µA-enabling energy-efficient burst-mode acquisition.
AD7472YR-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1.5M
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.25V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 24-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7472YR-REEL7 FAQ
1.How can I place an order for AD7472YR-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7472YR-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 AD7472YR-REEL7 reliable?
The price and inventory of AD7472YR-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7472YR-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7472YR-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7472YR-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7472YR-REEL7?
AD7472YR-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7472YR-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 AD7472YR-REEL7?
For technical support, including AD7472YR-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7472YR-REEL7 requirements.
6.How does Aetrix verify that AD7472YR-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7472YR-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 AD7472YR-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7472YR-REEL7?
All AD7472YR-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7472YR-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 AD7472YR-REEL7 part is unused and in its original packaging.
Return procedure for AD7472YR-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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