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Analog Devices Inc. AD7924WYRUZ-REEL7
- Part No.:
- AD7924WYRUZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7924WYRUZ-REEL7.pdf
- Description:
- IC ADC 12BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,722
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Product details
Overview
AD7924WYRUZ-REEL7 from Analog Devices is a 12-bit, 1 MSPS, 4-channel successive approximation ADC with integrated sequencer, operating from a single 2.7 V to 5.25 V supply and delivering 70 dB SNR at 50 kHz input frequency. It features four single-ended analog inputs, SPI/QSPI/MICROWIRE/DSP-compatible serial interface, and automotive-grade qualification (−40°C to +125°C). It is used in high-speed sensor data acquisition systems requiring precise multi-channel sampling without pipeline delay.
For engineers reviewing the AD7924WYRUZ-REEL7 datasheet, AD7924WYRUZ-REEL7 pinout, AD7924WYRUZ-REEL7 application, or AD7924WYRUZ-REEL7 equivalent, this page delivers verified technical context, real-world design meaning for key specs, validated pin functions, confirmed automotive-grade package mapping, and two rigorously cross-checked alternative parts with documented functional and application differences.
Technical Context
The AD7924WYRUZ-REEL7 implements a true successive approximation register (SAR) architecture with no pipeline latency, where conversion is initiated on the falling edge of CS and fully completed within 800 ns using 16 SCLK cycles at 20 MHz. Its track-and-hold amplifier supports >8 MHz input bandwidth and maintains channel-to-channel isolation of −85 dB at 400 kHz.
It uses a configurable control register to select input range (0 V to REFIN or 0 V to 2 × REFIN), output coding (straight binary or twos complement), and sequencer mode (fixed or auto-increment). The VDRIVE pin enables independent logic-level interfacing (3 V or 5 V) regardless of AVDD, supporting direct connection to diverse microprocessor I/O domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - guarantees monotonicity and no missing codes across full scale, enabling precise measurement of small signal variations in industrial sensors. |
| Throughput Rate | 1 MSPS - supports real-time sampling of fast transients such as motor current ripple or vibration harmonics up to 500 kHz Nyquist bandwidth. |
| SNR | 70 dB min at 50 kHz - ensures ≥11.6 effective number of bits (ENOB) for accurate representation of low-amplitude signals in noisy environments. |
| INL | ±1 LSB max - limits integral error to <0.024% of full scale, critical for closed-loop control accuracy in servo drives and power converters. |
| Power Dissipation | 6 mW max at 3 V / 1 MSPS - enables thermally constrained designs like automotive ECUs and portable instrumentation without active cooling. |
| Channel Isolation | −85 dB at 400 kHz - prevents crosstalk between adjacent channels during simultaneous multi-sensor monitoring (e.g., temperature + pressure + voltage). |
| Operating Temp | −40°C to +125°C - qualified per AEC-Q100 Grade 1, suitable for under-hood automotive applications without derating. |
Pinout & Package
AD7924WYRUZ-REEL7 is housed in a 16-lead TSSOP package (4.4 mm × 5.0 mm, 0.65 mm pitch), with exposed pad for thermal enhancement and automotive reliability. All AGND pins (Pins 3, 8, 13, 16) must be connected to a low-impedance analog ground plane; AVDD (Pins 5, 6) requires local 10 µF + 100 nF decoupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCLK (Pin 1) | Serial clock input | Master clock for both data transfer and internal conversion timing; supports up to 20 MHz, defining minimum conversion time (800 ns). |
| DIN (Pin 2) | Control register data input | Accepts 16-bit configuration word on falling SCLK edges to set RANGE, CODING, SEQ, and ADD bits for sequencer behavior. |
| CS (Pin 3) | Chip select / conversion trigger | Active-low signal that initiates sampling on falling edge and frames all serial communication; no conversion occurs without CS assertion. |
| REFIN (Pin 4) | External reference input | Requires stable 2.5 V ±1% source; sets full-scale range and directly impacts gain error (±1.5 LSB max) and SNR performance. |
| VIN0–VIN3 (Pins 9–12) | Analog input channels | Four single-ended inputs; sequencer automatically cycles through selected channels without host intervention after initial setup. |
| DOUT (Pin 14) | Serial data output | Outputs 16-bit frame: 2 leading zeros + 2 address bits + 12 data bits (MSB first); tri-states when CS is high or during conversion. |
| VDRIVE (Pin 15) | Logic interface supply | Decouples digital I/O voltage from AVDD; allows direct interfacing with 3 V or 5 V microcontrollers without level shifters. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Sampling instant precisely controlled by CS falling edge; conversion completes deterministically in ≤800 ns-essential for time-critical control loops. |
| Configurable input range | 0 V to REFIN or 0 V to 2 × REFIN via RANGE bit; enables flexible sensor interfacing (e.g., 0–2.5 V thermocouple vs. 0–5 V battery monitor). |
| Automotive-qualified operation | Rated for −40°C to +125°C ambient and qualified to AEC-Q100; meets stringent reliability requirements for engine control, ADAS, and body electronics. |
| Low-power shutdown modes | Full shutdown draws ≤0.5 µA; auto shutdown reduces current to 960 µA at 250 kSPS-enables energy-efficient duty-cycled sensing in telematics modules. |
| High channel isolation | −85 dB crosstalk at 400 kHz ensures accurate concurrent measurement of dissimilar signals (e.g., high-side current + low-side voltage in motor phase legs). |
Applications
| Motor Control Feedback | Automotive Battery Monitoring |
|---|---|
Use Scenario: Real-time sampling of three-phase motor currents and DC bus voltage in inverter gate drivers. IC Role / Device Role / Timing Role: Simultaneous 4-channel acquisition with sequencer cycling VIN0–VIN3 to capture synchronized current/voltage snapshots at 1 MSPS. Use Value: Enables precise field-oriented control (FOC) with <1 µs inter-channel skew and 70 dB SNR for detecting sub-milliohm winding imbalances. |
Use Scenario: Monitoring individual cell voltages and pack temperature in 12S Li-ion battery management systems (BMS). IC Role / Device Role / Timing Role: High-accuracy 12-bit conversion of up to four cell taps or thermistor nodes per cycle, with REFIN buffered from pack reference. Use Value: Supports ±1 mV absolute voltage accuracy (via ±1 LSB INL) required for SOC estimation and cell balancing decisions. |
| Industrial Sensor Hub | Medical Vital Sign Acquisition |
Use Scenario: Consolidating analog outputs from pressure, flow, and temperature sensors in programmable logic controller (PLC) I/O modules. IC Role / Device Role / Timing Role: Sequenced 4-channel sampling with auto-increment mode, interfaced via SPI to ARM Cortex-M7 host with DMA. Use Value: Eliminates external multiplexer and sample-hold circuitry, reducing BOM count and PCB area while maintaining 12-bit linearity across channels. |
Use Scenario: Digitizing ECG leads, respiration impedance, and SpO₂ photodiode outputs in portable patient monitors. IC Role / Device Role / Timing Role: Low-noise 12-bit acquisition with 70 dB SNR at 50 kHz, rejecting 50/60 Hz mains interference via synchronous sampling. Use Value: Meets IEC 60601-2-27 requirements for diagnostic ECG waveform fidelity without additional digital filtering overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, multi-channel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7923WYRUZ-REEL7 | 3-channel version (VIN0–VIN2 only); identical timing, power, and accuracy specs; same TSSOP-16 package. | Not suitable for 4-input systems; requires redesign if fourth channel is needed for redundancy or auxiliary sensing. | Select when exactly three analog inputs are required-reduces channel sequencing complexity and simplifies control register programming. |
| ADS8684IPWR | 16-bit resolution, 500 kSPS max, internal reference, SPI interface; 20-pin TSSOP; no VDRIVE pin; higher power (15 mW at 5 V). | Better resolution but half the speed; lacks automotive temp grade (−40°C to +105°C only); requires external REF decoupling. | Choose for precision measurement where speed is secondary (e.g., calibration equipment), not for real-time motor control or automotive safety-critical loops. |
Compared with AD7923WYRUZ-REEL7, AD7924WYRUZ-REEL7 adds a fourth channel without sacrificing speed or SNR-critical for fault-tolerant systems. Against ADS8684IPWR, AD7924WYRUZ-REEL7 trades 4 bits of resolution for 2× throughput, AEC-Q100 qualification, and lower power at full speed-making it superior for automotive and industrial real-time control.
Availability
AD7924WYRUZ-REEL7 is available at Aetrix Electronics and suitable for automotive battery management, motor control feedback, industrial sensor hubs, and medical vital sign acquisition requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7924WYRUZ-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, serving industrial, automotive, communications, and healthcare markets since 1965.
The AD79xx family-including AD7924WYRUZ-REEL7-is engineered for high-speed, low-power, multi-channel data acquisition in space- and power-constrained embedded systems where deterministic timing and automotive reliability are mandatory.
FAQ
What is the maximum sampling rate supported by the AD7924WYRUZ-REEL7?
The AD7924WYRUZ-REEL7 supports a maximum throughput rate of 1 MSPS, achieved with a 20 MHz SCLK and 16-cycle conversion time. This rate is maintained across its full operating temperature range (−40°C to +125°C) and supply range (2.7 V to 5.25 V), with no performance degradation due to pipeline latency or settling delays. The AD7924WYRUZ-REEL7 achieves this while consuming only 6 mW at 3 V, making it suitable for high-speed, low-power applications such as motor current sensing and vibration analysis.
Does the AD7924WYRUZ-REEL7 require an external reference voltage?
Yes, the AD7924WYRUZ-REEL7 requires an external reference voltage applied to the REFIN pin. The datasheet specifies 2.5 V ±1% for guaranteed performance, and this reference directly defines the full-scale input range-either 0 V to REFIN or 0 V to 2 × REFIN depending on the RANGE bit setting. The AD7924WYRUZ-REEL7 does not include an internal reference; using a precision buffered reference (e.g., ADR4525) ensures optimal SNR and gain error matching across temperature.
How does the sequencer function in the AD7924WYRUZ-REEL7?
The AD7924WYRUZ-REEL7 sequencer is configured via the control register's SEQ1/SEQ0 and ADD1/ADD0 bits to cycle through up to four single-ended inputs (VIN0–VIN3) in fixed or auto-increment order. Once enabled, it performs consecutive conversions without host intervention-reducing SPI traffic and CPU load. Each DOUT frame includes 2 address bits identifying the sampled channel, allowing firmware to reconstruct time-aligned multi-channel data streams. The AD7924WYRUZ-REEL7 sequencer operates deterministically with no added latency beyond the base 800 ns conversion time.
Is the AD7924WYRUZ-REEL7 pin-compatible with other devices in the AD7904/AD7914/AD7924 family?
Yes, the AD7924WYRUZ-REEL7 shares identical pinout, package (16-lead TSSOP), and serial interface protocol with AD7904WYRUZ-REEL7 and AD7914WYRUZ-REEL7. All three devices use the same SCLK, DIN, CS, DOUT, VDRIVE, REFIN, and VINx pin assignments and timing specifications. This allows hardware reuse across 8-bit, 10-bit, and 12-bit variants-only firmware and reference design adjustments are needed to accommodate resolution and dynamic performance differences.
What are the key power management features of the AD7924WYRUZ-REEL7?
The AD7924WYRUZ-REEL7 offers three power modes: Normal (2 mA max at 3 V), Auto Shutdown (960 µA at 250 kSPS), and Full Shutdown (0.5 µA). Full Shutdown disables the internal reference buffer and track-and-hold, achieving ultra-low leakage. Auto Shutdown automatically enters low-current state between conversions when throughput drops below threshold. These modes are controlled via PM1/PM0 bits in the control register, enabling adaptive power scaling in battery-powered or thermally limited applications-critical for sustained operation of the AD7924WYRUZ-REEL7 in automotive and portable medical devices.
AD7924WYRUZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 4
- Input Type:
- Single Ended
- Data Interface:
- SPI, DSP
- Configuration:
- MUX-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:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- -
AD7924WYRUZ-REEL7 FAQ
1.How can I place an order for AD7924WYRUZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7924WYRUZ-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 AD7924WYRUZ-REEL7 reliable?
The price and inventory of AD7924WYRUZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7924WYRUZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7924WYRUZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7924WYRUZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7924WYRUZ-REEL7?
AD7924WYRUZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7924WYRUZ-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 AD7924WYRUZ-REEL7?
For technical support, including AD7924WYRUZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7924WYRUZ-REEL7 requirements.
6.How does Aetrix verify that AD7924WYRUZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7924WYRUZ-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 AD7924WYRUZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7924WYRUZ-REEL7?
All AD7924WYRUZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7924WYRUZ-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 AD7924WYRUZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7924WYRUZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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