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Analog Devices Inc. AD7714ARSZ-3REEL
- Part No.:
- AD7714ARSZ-3REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
AD7714ARSZ-3REEL.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,620
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Product details
Overview
AD7714ARSZ-3REEL from Analog Devices is a 24-bit sigma-delta analog-to-digital converter (ADC) with integrated programmable-gain amplifier (PGA), five-channel pseudo-differential or three-channel fully differential input architecture, and 3 V single-supply operation. It delivers 0.0015% integral nonlinearity, <150 nVrms noise, and supports filter notch frequencies down to 10 Hz for high-precision industrial sensor signal conditioning in loop-powered systems.
For engineers reviewing the AD7714ARSZ-3REEL datasheet, AD7714ARSZ-3REEL pinout, AD7714ARSZ-3REEL application, or AD7714ARSZ-3REEL equivalent, key selection criteria include its 24-bit no-missing-codes performance at ≤60 Hz filter notches, low 350 µA typical supply current, SPI/QSPI/MICROWIRE-compatible 3-wire serial interface, and TSSOP-24 package compatibility with space-constrained portable instrumentation designs.
Technical Context
The AD7714ARSZ-3REEL implements a charge-balancing sigma-delta ADC architecture with on-chip digital filtering, enabling programmable first-notch cutoffs (10–1000 Hz) and settling times optimized for low-frequency transducer signals. Its front-end supports gain settings of 1–128 across five pseudo-differential or three fully differential analog inputs, with dedicated differential reference input and internal calibration registers.
It operates from a single +3.3 V AVDD/DVDD supply, features Schmitt-triggered SCLK and DIN inputs (Y-grade functionality confirmed for AD7714ARSZ-3REEL per Analog Devices ordering guide and Y-version specs), and includes self-, system-, and background calibration modes to eliminate zero-scale and full-scale drift errors without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| No Missing Codes | 24 bits minimum at filter notches ≤60 Hz - guarantees monotonicity for high-resolution weight/pressure measurement. |
| Integral Nonlinearity | ±0.0015% of FSR max - ensures accuracy within ±1 LSB over full scale in unipolar/bipolar modes. |
| Output Noise | <150 nVrms - enables sub-µV-level resolution in strain gauge and RTD readout applications. |
| Supply Current | 350 µA typical (normal mode), 5 µA typical (power-down) - supports 4–20 mA loop-powered systems. |
| Input Configuration | 5 pseudo-differential or 3 fully differential channels - eliminates need for external multiplexers in multi-sensor nodes. |
| Reference Input | +1.25 V nominal (REF IN(+) – REF IN(–)) - matches standard low-voltage precision references for 3 V systems. |
| Digital Interface | 3-wire SPI/QSPI/MICROWIRE/DSP-compatible - reduces isolation component count in industrial I/O modules. |
Pinout & Package
AD7714ARSZ-3REEL is housed in a 24-lead thin shrink small outline package (TSSOP), 4.4 mm × 7.8 mm body, 0.65 mm pitch, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1–AIN6 | Analog input terminals | Support configurable pseudo-differential (AIN1–AIN2, AIN3–AIN4, AIN5–AIN6) or fully differential (AIN1–AIN2, AIN3–AIN4, AIN5–AIN6) input pairs. |
| REF IN(+), REF IN(–) | Differential reference input | Accepts 1.25 V nominal reference voltage; defines full-scale range for all channels. |
| AVDD, DVDD, AGND, DGND | Power and ground rails | Separate analog/digital supplies and grounds minimize noise coupling in mixed-signal PCB layouts. |
| SCLK, DIN, DOUT, CS, DRDY | Serial interface signals | Enable 3-wire synchronous communication; DRDY indicates conversion completion for interrupt-driven firmware. |
| SYNC, RESET, POL | Control and configuration | SYNC initiates synchronized conversions across multiple devices; POL selects unipolar/bipolar coding mode. |
| MCLK IN, MCLK OUT | Master clock interface | Accepts 400 kHz–2.5 MHz external clock or drives crystal/resonator for autonomous timing. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable gain front end (1–128) | Direct connection of mV-level transducer outputs (e.g., load cells, pressure bridges) without external amplification. |
| On-chip calibration registers | User-accessible memory for storing zero/full-scale coefficients, enabling field recalibration without hardware changes. |
| Low-pass digital filter with selectable notch | Configurable rejection of 50/60 Hz line interference and harmonics via software register writes. |
| Power-down mode (5 µA typ) | Reduces standby power to <17 µW, critical for battery-operated handheld test equipment. |
| CMOS construction with Schmitt-trigger inputs | Immunity to slow-rising clock/data edges in noisy industrial environments; eliminates external hysteresis circuitry. |
Applications
| Portable Weigh Scales | Loop-Powered Transmitters |
|---|---|
Use Scenario: Battery-powered handheld scales measuring 0.1 g resolution over 30 kg range using strain gauge bridges. IC Role / Device Role / Timing Role: Primary ADC with integrated PGA and digital filtering; performs synchronized conversions triggered by microcontroller. Use Value: 24-bit no-missing-codes resolution and 0.0015% INL ensure legal-for-trade accuracy; 350 µA supply current extends battery life beyond 12 months. | Use Scenario: 4–20 mA current-loop transmitter for pressure sensing in hazardous area process control. IC Role / Device Role / Timing Role: Signal conditioner and digitizer; interfaces directly to bridge sensor and communicates via isolated SPI to loop controller. Use Value: Single 3.3 V supply simplifies loop power budget; 150 nVrms noise enables <0.05% FS repeatability under EMI stress. |
| Industrial Temperature Monitoring | Portable Multifunction Calibrators |
Use Scenario: Handheld calibrator reading RTD (Pt100) and thermocouple inputs with cold-junction compensation. IC Role / Device Role / Timing Role: Precision ADC front end with programmable gain and bipolar input support for thermocouple polarity reversal. Use Value: 24-bit resolution and 100 dB 50/60 Hz rejection enable accurate thermocouple measurements in electrically noisy plant floors. | Use Scenario: Field-service tool generating and measuring mV, V, mA, and resistance signals with traceable accuracy. IC Role / Device Role / Timing Role: Dual-role device: digitizes reference sensor inputs during self-calibration and reads DUT outputs during verification. Use Value: On-chip self- and system-calibration registers allow NIST-traceable adjustments without external standards or firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision sigma-delta ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7799BRUZ | 24-bit, 4-channel, lower 165 µA typical current, integrated 4.92 kΩ reference, but only 3-wire SPI (no QSPI/MICROWIRE). | Better suited for ultra-low-power battery devices; lacks Schmitt-trigger inputs and 5-input flexibility. | Select AD7799BRUZ when reference integration and minimal quiescent current outweigh interface flexibility and channel count. |
| ADS124S08IPWR | 24-bit, 7-channel, integrated PGA and burnout current, 2.5 V reference, but requires 5 V DVDD for full performance. | Optimized for RTD/thermocouple systems with built-in sensor diagnostics; higher pin count (32-TQFP) vs. TSSOP-24. | Choose ADS124S08IPWR for sensor-specific diagnostics and larger channel density where board space permits larger package. |
Compared with AD7799BRUZ and ADS124S08IPWR, AD7714ARSZ-3REEL offers unique support for both 3 V and 5 V logic levels on SCLK/DIN (via Schmitt triggers), broader gain range (1–128), and direct compatibility with legacy MICROWIRE controllers-making it optimal for retrofitting existing industrial instrumentation platforms.
Availability
AD7714ARSZ-3REEL is available at Aetrix Electronics and suitable for portable industrial instruments, loop-powered transmitters, and portable weigh scales requiring stable component supply and long-term manufacturability.
Supply support for AD7714ARSZ-3REEL 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, founded in 1965 and headquartered in Wilmington, MA.
The AD7714 product line was engineered for high-accuracy, low-power, low-frequency measurement systems-specifically targeting smart sensor nodes, portable instrumentation, and industrial process control where resolution, noise immunity, and calibration integrity are critical.
FAQ
What is the operating voltage range for AD7714ARSZ-3REEL?
The AD7714ARSZ-3REEL operates from a single +3.0 V to +3.6 V analog and digital supply (AVDD = DVDD). It is specified for full performance at +3.3 V, with guaranteed operation down to +3.0 V. The reference input requires +1.25 V (±1%), and absolute input voltages must remain between AGND – 30 mV and AVDD + 30 mV.
Does AD7714ARSZ-3REEL support both unipolar and bipolar input ranges?
Yes, AD7714ARSZ-3REEL supports both unipolar (0 to +VREF/gain) and bipolar (±VREF/gain) input ranges. The mode is selected via the B/U bit in the Filter High register. Bipolar mode enables true differential measurements such as thermocouple outputs, while unipolar mode suits ratiometric bridge sensors.
How does the programmable digital filter work in AD7714ARSZ-3REEL?
The AD7714ARSZ-3REEL uses an on-chip sigma-delta modulator followed by a programmable sinc³ digital filter. The first notch frequency is set via the filter register (10 Hz to 1 kHz), determining both rejection of 50/60 Hz interference and conversion settling time. Lower notches improve noise rejection but increase latency-e.g., 10 Hz notch yields ~200 ms settling, while 1 kHz yields ~2 ms.
Can AD7714ARSZ-3REEL perform self-calibration without external components?
Yes, AD7714ARSZ-3REEL includes on-chip self-calibration that corrects zero-scale and full-scale errors using internal references. No external precision resistors or voltage sources are required. Calibration coefficients are stored in dedicated registers and can be read/written via the serial interface for traceable field adjustments.
What package type and lead finish does AD7714ARSZ-3REEL use?
AD7714ARSZ-3REEL is supplied in a 24-lead thin shrink small outline package (TSSOP, RU-24 variant), with lead-free (Pb-free) matte tin finish compliant with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3 (MSL3).
AD7714ARSZ-3REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 1k
- Number of Inputs:
- 3, 5
- Input Type:
- Differential, Pseudo-Differential
- Data Interface:
- SPI, DSP
- Configuration:
- MUX-PGA-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External
- Voltage - Supply, Analog:
- 3V ~ 3.6V
- Voltage - Supply, Digital:
- 3V ~ 5.25V
- Features:
- PGA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7714ARSZ-3REEL FAQ
1.How can I place an order for AD7714ARSZ-3REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7714ARSZ-3REEL 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 AD7714ARSZ-3REEL reliable?
The price and inventory of AD7714ARSZ-3REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7714ARSZ-3REEL is usually 5 days.
3.What payment methods are accepted for AD7714ARSZ-3REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7714ARSZ-3REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7714ARSZ-3REEL?
AD7714ARSZ-3REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7714ARSZ-3REEL 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 AD7714ARSZ-3REEL?
For technical support, including AD7714ARSZ-3REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7714ARSZ-3REEL requirements.
6.How does Aetrix verify that AD7714ARSZ-3REEL is sourced from the original manufacturer or authorized distributors?
All AD7714ARSZ-3REEL 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 AD7714ARSZ-3REEL meets industry standards.
7.What is the process for return or replacement of AD7714ARSZ-3REEL?
All AD7714ARSZ-3REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7714ARSZ-3REEL, 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 AD7714ARSZ-3REEL part is unused and in its original packaging.
Return procedure for AD7714ARSZ-3REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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