My Inquiry
My Account
Analog Devices Inc. AD7492ARZ-REEL
- Part No.:
- AD7492ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AD7492ARZ-REEL.pdf
- Description:
- IC ADC 12BIT SAR 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,887
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7492ARZ-REEL from Analog Devices is a 12-bit, 1.25 MSPS successive approximation ADC with integrated 2.5 V reference and on-chip clock oscillator. It operates from a single 4.75–5.25 V supply, consumes 16 mW at full throughput, and delivers 70 dB SNR at 100 kHz input - enabling high-fidelity data acquisition in space-constrained industrial sensor interfaces and real-time control systems.
For engineers reviewing the AD7492ARZ-REEL datasheet, AD7492ARZ-REEL pinout, AD7492ARZ-REEL application, or AD7492ARZ-REEL equivalent, key selection considerations include its no-pipeline-delay parallel interface, dual sleep modes (full/partial), VDRIVE-level flexible I/O, and SOIC-24 package compatibility with legacy 3 V/5 V microprocessor buses.
Technical Context
The AD7492ARZ-REEL implements a capacitive DAC-based SAR architecture with track/hold acquisition time of 120 ns and aperture jitter of 15 ps typ. Its conversion is initiated on the falling edge of CONVST, with BUSY asserted for 680 ns (max) before signaling completion - eliminating pipeline latency and enabling deterministic timing in closed-loop systems.
It features hardware-selectable sleep modes via PS/FS pin: partial sleep maintains internal reference and oscillator (250 μA max), while full sleep powers down all analog circuitry (1 μA max). The VDRIVE pin independently sets digital I/O voltage levels (2.7–5.25 V), decoupling logic interface from AVDD/DVDD supply domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes with guaranteed no missing codes. |
| Throughput Rate | 1.25 MSPS - supports real-time sampling of signals up to 10 MHz full-power bandwidth. |
| SNR | 70 dB typ at 100 kHz input - enables accurate digitization of medium-frequency sensor outputs. |
| Power Dissipation | 16.5 mW max at 1.25 MSPS/5 V - balances speed and efficiency without external regulators. |
| Reference | 2.5 V internal ±1.5% - eliminates need for external reference IC and associated layout area. |
| Aperture Jitter | 15 ps typ - limits sampling uncertainty to <0.02 LSB at 100 kHz, preserving dynamic accuracy. |
| INL | ±1.25 LSB max (B version) - ensures monotonicity and linearity critical for closed-loop feedback. |
Pinout & Package
AD7492ARZ-REEL is housed in a 24-lead SOIC package (width 7.5 mm, body height 2.35 mm), RoHS-compliant and rated for −40°C to +85°C operation. Pin 1 is marked with a notch or dot; pin numbering follows standard SOIC convention (counterclockwise from top-left corner).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DB0–DB11 | Parallel Data Outputs | 12-bit three-state outputs driven by VDRIVE voltage; enable direct connection to 3 V or 5 V microprocessor data buses. |
| CONVST | Conversion Start Input | Falling-edge-triggered command that initiates sampling and conversion; low pulse duration ≥10 ns suffices. |
| BUSY | Status Output | Active-high signal indicating conversion in progress; falls 680 ns after start to signal result availability. |
| CS / RD | Parallel Interface Controls | Interchangeable active-low signals controlling data bus enable; both must fall to latch conversion result. |
| PS/FS | Sleep Mode Select | Hardware-configured pin (DVDD = partial sleep, GND = full sleep) enabling ultra-low-power idle states. |
| VDRIVE | Digital I/O Supply | Independent 2.7–5.25 V rail setting logic thresholds and output swing - isolates digital interface from analog supply noise. |
| REF OUT | Reference Output | 2.5 V ±1.5% buffered reference available for external circuitry or ratiometric sensor excitation. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Single-cycle conversion with deterministic 680 ns latency - eliminates timing uncertainty in servo control loops. |
| Internal 2.5 V reference | Eliminates external reference component and PCB footprint; ±1.5% tolerance supports ratiometric measurement accuracy. |
| On-chip clock oscillator | Removes need for external crystal or clock generator - reduces BOM count and board area in compact designs. |
| VDRIVE voltage control | Enables mixed-voltage system interfacing: AVDD/DVDD at 5 V for ADC performance, while I/O pins operate at 3 V for MCU compatibility. |
| Dual sleep modes | Full sleep (1 μA) and partial sleep (250 μA) allow power scaling across duty-cycled acquisition intervals without firmware overhead. |
Applications
| Industrial Sensor Signal Conditioning | Motor Control Current Feedback |
|---|---|
Use Scenario: Digitizing analog outputs from strain gauges, RTDs, and pressure transducers in PLC analog input modules. IC Role / Device Role / Timing Role: Primary ADC capturing conditioned sensor signals at ≤1 MSPS with minimal latency and high DC accuracy. Use Value: Integrated 2.5 V reference and on-chip clock reduce component count by two ICs and simplify layout for EMC-sensitive industrial environments. |
Use Scenario: Sampling shunt-resistor voltage drops in three-phase inverter legs for real-time current regulation. IC Role / Device Role / Timing Role: High-speed, low-latency ADC synchronizing with PWM cycles to support field-oriented control (FOC) algorithms. Use Value: 680 ns conversion time and no pipeline delay ensure current samples align precisely with switching events - critical for torque ripple reduction. |
| Portable Test Equipment Front-End | Energy Metering Reference Channel |
Use Scenario: High-resolution waveform capture in handheld oscilloscopes and multimeters operating from battery supplies. IC Role / Device Role / Timing Role: Low-power 12-bit ADC enabling >1 MSPS sampling while maintaining sub-20 μA quiescent current in standby. Use Value: Full sleep mode (200 nA typ) extends battery life between measurements without sacrificing wake-up responsiveness. |
Use Scenario: Precision voltage channel in Class 0.2 polyphase energy meters requiring stable reference and low THD. IC Role / Device Role / Timing Role: Reference-grade ADC digitizing metering transformer outputs with 70 dB SNR and −87 dB THD at 100 kHz. Use Value: Internal 2.5 V reference provides ratiometric stability against supply drift - improving long-term calibration retention. |
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 |
|---|---|---|---|
| AD7490ARZ-REEL | 10-bit resolution, 1 MSPS, same SOIC-24 package and pinout. | Limited to lower-accuracy applications where 10-bit quantization suffices (e.g., basic monitoring vs. closed-loop control). | Select when cost sensitivity outweighs resolution requirement and existing layout reuse is prioritized. |
| ADS7822U | 12-bit, 200 kSPS, SPI interface, MSOP-8 package - no parallel bus or internal reference. | Requires external reference and serial interface firmware; suited for low-pin-count, low-throughput embedded nodes. | Choose for space-constrained designs where serial interface and smaller footprint justify added software complexity. |
Compared with AD7492ARZ-REEL, AD7490ARZ-REEL trades 2 bits of resolution for lower cost and identical layout compatibility, while ADS7822U sacrifices speed and parallel simplicity for miniaturization - making AD7492ARZ-REEL optimal for high-fidelity, timing-critical, and layout-stable industrial data acquisition.
Availability
AD7492ARZ-REEL is available at Aetrix Electronics and suitable for industrial automation, motor control, and portable instrumentation requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for AD7492ARZ-REEL 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 AD7492 product line delivers high-speed, low-power SAR ADCs optimized for precision industrial data acquisition where deterministic timing, integrated references, and robust noise immunity are essential.
FAQ
What is the maximum sampling rate supported by the AD7492ARZ-REEL?
The AD7492ARZ-REEL supports a maximum throughput rate of 1.25 MSPS, achieved with a 4.75–5.25 V supply. This corresponds to a conversion time of 680 ns max and track/hold acquisition time of 120 ns min - enabling reliable sampling of signals with up to 10 MHz full-power bandwidth. Performance remains specified across the full −40°C to +85°C temperature range.
Does the AD7492ARZ-REEL require an external clock source?
No, the AD7492ARZ-REEL includes an on-chip clock oscillator and requires no external clock source. The internal clock determines the conversion rate, simplifying system design and reducing component count. External clocking is not supported - timing is fully self-contained within the AD7492ARZ-REEL.
How does the VDRIVE pin function in the AD7492ARZ-REEL?
The VDRIVE pin on the AD7492ARZ-REEL supplies power to the digital I/O buffer circuitry and sets logic thresholds for inputs (CS, RD, CONVST, PS/FS) and output swing for DB0–DB11. It operates independently from AVDD and DVDD (2.7–5.25 V range), allowing the AD7492ARZ-REEL to interface directly with 3 V microcontrollers while maintaining 5 V analog performance.
What sleep modes are available on the AD7492ARZ-REEL and how are they selected?
The AD7492ARZ-REEL offers two hardware-selectable sleep modes: partial sleep (250 μA max) and full sleep (1 μA max). Selection is made via the PS/FS pin - tied to DVDD for partial sleep (reference and oscillator remain active), or to AGND/DGND for full sleep (all analog circuitry powered down). Wake-up occurs on the next rising edge of CONVST.
Is the AD7492ARZ-REEL pin-compatible with other members of the AD749x family?
Yes, the AD7492ARZ-REEL shares identical pinout and package (24-lead SOIC) with AD7490ARZ-REEL and AD7491ARZ-REEL. However, functional differences exist: AD7490 is 10-bit/1 MSPS, AD7491 is 10-bit/1.25 MSPS, and AD7492ARZ-REEL is 12-bit/1.25 MSPS. Interchangeability requires verification of resolution, timing, and power requirements in the target application.
AD7492ARZ-REEL 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):
- 1M
- 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:
- Internal
- Voltage - Supply, Analog:
- 2.7V ~ 5.25V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 24-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7492ARZ-REEL FAQ
1.How can I place an order for AD7492ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7492ARZ-REEL 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 AD7492ARZ-REEL reliable?
The price and inventory of AD7492ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7492ARZ-REEL is usually 5 days.
3.What payment methods are accepted for AD7492ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7492ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7492ARZ-REEL?
AD7492ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7492ARZ-REEL 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 AD7492ARZ-REEL?
For technical support, including AD7492ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7492ARZ-REEL requirements.
6.How does Aetrix verify that AD7492ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD7492ARZ-REEL 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 AD7492ARZ-REEL meets industry standards.
7.What is the process for return or replacement of AD7492ARZ-REEL?
All AD7492ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7492ARZ-REEL, 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 AD7492ARZ-REEL part is unused and in its original packaging.
Return procedure for AD7492ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7492ARZ-REEL Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
