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Analog Devices Inc. AD7914WYRUZ-REEL7
- Part No.:
- AD7914WYRUZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7914WYRUZ-REEL7.pdf
- Description:
- IC ADC 10BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,913
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Product details
Overview
AD7914WYRUZ-REEL7 from Analog Devices is a 10-bit, 1 MSPS, 4-channel successive approximation ADC with integrated channel sequencer, operating from a single 2.7 V to 5.25 V supply. It features 0.5 µA shutdown current, SPI/QSPI/MICROWIRE/DSP-compatible serial interface, and 16-lead TSSOP packaging qualified for automotive applications (−40°C to +125°C). It is used in multichannel sensor data acquisition systems requiring precise timing control and low power.
For engineers reviewing the AD7914WYRUZ-REEL7 datasheet, AD7914WYRUZ-REEL7 pinout, AD7914WYRUZ-REEL7 application, or AD7914WYRUZ-REEL7 equivalent, this page delivers verified technical context, real-world design meaning of specifications, validated pin functions, confirmed automotive-grade performance metrics, and two rigorously cross-checked alternative parts for system-level selection.
Technical Context
The AD7914WYRUZ-REEL7 implements a standard SAR architecture with no pipeline delay, using CS falling edge to initiate sampling and SCLK as both serial clock and conversion master clock. Its internal track-and-hold supports >8 MHz input bandwidth and achieves 60.5 dB SNR at 50 kHz input frequency with 2.5 V reference.
It integrates a 4-channel single-ended analog multiplexer with programmable sequencer controlled via ADD1/ADD0 and SEQ1/SEQ0 bits in the 8-bit control register. The VDRIVE pin enables independent logic-level interfacing (3 V or 5 V) regardless of AVDD, while RANGE and CODING bits configure input range (0–REFIN or 0–2×REFIN) and output coding (straight binary or twos complement).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1024 discrete digital codes per channel, sufficient for medium-precision industrial sensor digitization. |
| Throughput Rate | 1 MSPS - supports real-time sampling of four channels at up to 250 kSPS per channel in sequenced mode. |
| SNR @ 50 kHz | 60.5 dB min - ensures ≥9.7 effective number of bits (ENOB) for clean signal capture in noisy environments. |
| Power Dissipation | 6 mW max at 3 V / 1 MSPS - enables battery-powered or thermally constrained embedded systems without active cooling. |
| Channel Isolation | −85 dB typ at 400 kHz - prevents crosstalk between adjacent inputs during simultaneous high-frequency sensing. |
| Shutdown Current | 0.5 µA max - allows deep sleep between acquisition bursts to extend system battery life significantly. |
| Operating Temp | −40°C to +125°C - meets AEC-Q100 Grade 2 requirements for under-hood automotive electronics. |
Pinout & Package
AD7914WYRUZ-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 mechanical stability in automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCLK | Serial clock input | Master clock for both data transfer and internal conversion timing; falling edge clocks DIN, rising edge samples DOUT. |
| DIN | Data input | Accepts 8-bit control register writes (ADDR, SEQ, RANGE, CODING bits) on SCLK falling edges for configuration. |
| CS | Chip select (active low) | Initiates sampling on falling edge; frames serial data transaction; must remain low for full 16-SCLK conversion cycle. |
| AGND (Pins 4, 8, 13, 16) | Analog ground reference | Common return for all analog signals (VINx, REFIN, AVDD); must be isolated from DGND and tied at single point. |
| AVDD (Pins 5, 6) | Analog power supply | Single 2.7–5.25 V rail powering analog core; requires local 10 µF + 100 nF decoupling near pins 5/6. |
| REFIN | External reference input | 2.5 V ±1% precision reference sets full-scale range; high-impedance input (36 kΩ) demands low-noise buffer if sourced remotely. |
| VIN0–VIN3 | Analog input channels | Four single-ended inputs; unused channels must be tied to AGND to prevent noise coupling into sequencer path. |
| DOUT | Serial data output | Outputs 2 leading zeros + 2 address bits + 10 data bits + 2 trailing zeros (MSB first); tri-state when CS high. |
| VDRIVE | Digital I/O voltage reference | Sets logic levels for DIN/DOUT/CS/SCLK independently of AVDD-enables direct interfacing with 3 V or 5 V microcontrollers. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Sampling instant precisely controlled by CS falling edge; eliminates latency uncertainty in time-critical closed-loop control. |
| Configurable input range | 0–REFIN or 0–2×REFIN selected via RANGE bit-supports both unipolar sensors and differential-biased transducer outputs. |
| Programmable sequencer | SEQ1/SEQ0 bits define 1–4 channel scan order; eliminates software overhead for round-robin acquisition in firmware. |
| VDRIVE logic independence | Serial interface operates at 3 V or 5 V regardless of AVDD-simplifies mixed-voltage board design without level shifters. |
| Automotive qualification | W-grade temperature range (−40°C to +125°C) and AEC-Q100 compliance enable use in engine control, ADAS, and body electronics. |
Applications
| Motor Control Feedback | Battery Management System |
|---|---|
|
Use Scenario: Real-time monitoring of phase currents and DC-link voltage in 3-phase inverter drives. IC Role / Device Role / Timing Role: Simultaneous 4-channel sampling captures synchronized current/voltage snapshots for field-oriented control (FOC) algorithms. Use Value: 1 MSPS throughput and <300 ns acquisition time ensure accurate current reconstruction at PWM frequencies up to 20 kHz. |
Use Scenario: Cell voltage and temperature monitoring across 4-series Li-ion battery packs in EVs and energy storage. IC Role / Device Role / Timing Role: Sequenced conversion of cell voltages with automatic channel cycling reduces MCU polling overhead. Use Value: −85 dB channel isolation prevents leakage-induced voltage reading errors during fast transient load switching. |
| Automotive Cabin Sensors | Industrial PLC Analog Input Module |
|
Use Scenario: Aggregating cabin air quality (CO₂, humidity), ambient light, and seat occupancy signals in infotainment ECUs. IC Role / Device Role / Timing Role: Low-power 10-bit digitization with 0.5 µA shutdown enables always-on sensing without draining vehicle battery. Use Value: Automotive-grade temp range and 60.5 dB SNR maintain accuracy despite wide thermal swings and EMI in vehicle cabins. |
Use Scenario: Modular 4-channel analog input card for programmable logic controllers handling 4–20 mA or 0–10 V industrial sensors. IC Role / Device Role / Timing Role: Direct connection to isolated sensor front-ends via REFIN and AGND-referenced inputs. Use Value: Single-supply operation (2.7–5.25 V) and flexible VDRIVE simplify power architecture in space-constrained DIN-rail modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit, multichannel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7914BRUZ | Same die, B-grade (−40°C to +85°C), non-automotive qualified; identical electrical specs and pinout. | Not rated for automotive under-hood use; suitable for commercial/industrial temperature environments only. | Select AD7914BRUZ where AEC-Q100 compliance is unnecessary and cost optimization is prioritized. |
| ADS7953IRHBT | Texas Instruments 12-bit, 1 MSPS, 16-channel SAR ADC; higher resolution but larger 32-pin QFN package and no VDRIVE pin. | Requires external level shifting for mixed-voltage interfaces; broader channel count suits scalable I/O modules. | Choose ADS7953IRHBT when 12-bit resolution and >4 channels are required, accepting larger footprint and interface redesign. |
Compared with AD7914WYRUZ-REEL7, AD7914BRUZ offers identical performance at lower cost but lacks automotive qualification, while ADS7953IRHBT trades pin compatibility and VDRIVE flexibility for higher resolution and channel count-making each suitable for distinct system constraints.
Availability
AD7914WYRUZ-REEL7 is available at Aetrix Electronics and suitable for motor control feedback, battery management systems, automotive cabin sensors, and industrial PLC analog input modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7914WYRUZ-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, headquartered in Norwood, MA, with R&D and manufacturing facilities worldwide.
The AD79xx family-including AD7914WYRUZ-REEL7-is designed specifically for high-speed, low-power, multichannel data acquisition in automotive, industrial, and instrumentation applications where timing precision and thermal robustness are critical.
FAQ
What is the maximum sample rate supported by the AD7914WYRUZ-REEL7?
The AD7914WYRUZ-REEL7 supports a maximum throughput rate of 1 MSPS, achieved with a 20 MHz SCLK and 16-clock conversion cycle. At this rate, it completes one 10-bit conversion every 1 µs, enabling real-time capture of fast-changing analog signals such as motor phase currents or battery cell transients. The AD7914WYRUZ-REEL7 maintains specified AC performance-including 60.5 dB SNR-at full speed.
Does the AD7914WYRUZ-REEL7 require an external reference voltage?
Yes, the AD7914WYRUZ-REEL7 requires an external reference applied to the REFIN pin. The datasheet specifies 2.5 V ±1% for guaranteed performance, and the device supports input ranges of either 0–REFIN or 0–2×REFIN depending on the RANGE bit setting. The AD7914WYRUZ-REEL7 does not include an internal reference; using a precision external reference ensures consistent full-scale accuracy across temperature and supply variations.
How does the channel sequencer function in the AD7914WYRUZ-REEL7?
The AD7914WYRUZ-REEL7's sequencer uses SEQ1 and SEQ0 bits in the control register to define a fixed sequence of 1 to 4 channels (VIN0–VIN3) that are converted automatically in order upon successive CS assertions. No host intervention is needed between conversions-once configured, the AD7914WYRUZ-REEL7 cycles through the programmed channels, outputting corresponding address bits with each result. This reduces firmware overhead in multichannel monitoring applications.
What is the purpose of the VDRIVE pin on the AD7914WYRUZ-REEL7?
The VDRIVE pin on the AD7914WYRUZ-REEL7 sets the logic voltage level for all digital interface pins (DIN, DOUT, CS, SCLK), independent of the analog supply AVDD. This allows the AD7914WYRUZ-REEL7 to interface directly with 3 V or 5 V microcontrollers without external level shifters-even when AVDD is at a different voltage. For example, AVDD can be 3.3 V for analog performance while VDRIVE is 5 V to match a legacy 5 V MCU's I/O thresholds.
Is the AD7914WYRUZ-REEL7 pin-compatible with other members of the AD7904/AD7914/AD7924 family?
Yes, the AD7914WYRUZ-REEL7 is fully pin-compatible with AD7904WYRUZ-REEL7 and AD7924WYRUZ-REEL7 in the same 16-lead TSSOP package. All share identical pin configuration, power sequencing, interface protocol, and control register layout. The only differences are resolution (8/10/12-bit), dynamic performance (SINAD/SNR), and DC accuracy (INL/DNL)-allowing drop-in upgrades or downgrades based on system precision requirements without PCB changes.
AD7914WYRUZ-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:
- 10
- 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:
- -
AD7914WYRUZ-REEL7 FAQ
1.How can I place an order for AD7914WYRUZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7914WYRUZ-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 AD7914WYRUZ-REEL7 reliable?
The price and inventory of AD7914WYRUZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7914WYRUZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7914WYRUZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7914WYRUZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7914WYRUZ-REEL7?
AD7914WYRUZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7914WYRUZ-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 AD7914WYRUZ-REEL7?
For technical support, including AD7914WYRUZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7914WYRUZ-REEL7 requirements.
6.How does Aetrix verify that AD7914WYRUZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7914WYRUZ-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 AD7914WYRUZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7914WYRUZ-REEL7?
All AD7914WYRUZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7914WYRUZ-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 AD7914WYRUZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7914WYRUZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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