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Analog Devices Inc. AD7714ARSZ-5
- Part No.:
- AD7714ARSZ-5
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
AD7714ARSZ-5.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,459
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Product details
Overview
AD7714ARSZ-5 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, and 3-wire SPI-compatible serial interface. It operates from a +4.75 V to +5.25 V analog supply and delivers ±0.0015% integral nonlinearity, <150 nVrms noise, and 24-bit no-missing-codes performance at filter notches ≤60 Hz - ideal for high-precision industrial sensor signal conditioning in loop-powered systems.
For engineers reviewing the AD7714ARSZ-5 datasheet, AD7714ARSZ-5 pinout, AD7714ARSZ-5 application, or AD7714ARSZ-5 equivalent, key selection criteria include its 5 V operation, TSSOP-24 package, on-chip self/system/background calibration, programmable filter cutoffs, and compatibility with microcontroller-based isolated data acquisition where low power (<500 µA total supply current at 1 MHz clock) and high CMRR (>90 dB) are critical.
Technical Context
The AD7714ARSZ-5 implements a charge-balancing sigma-delta architecture with an on-chip digital filter whose first notch is software-programmable to adjust cutoff frequency and settling time. Its front end features a PGA with selectable gains of 1–128, configurable as either three fully differential inputs or five pseudo-differential inputs, plus dedicated differential reference inputs (REF IN(+) and REF IN(–)).
It supports 3-wire serial communication (SPI™/QSPI™/MICROWIRE™/DSP-compatible), includes Schmitt-triggered SCLK and DIN inputs only in Y-grade variants (not applicable to AD7714ARSZ-5), and provides register-controlled functions including channel selection, polarity, gain, filter configuration, and calibration mode - all accessible via the serial port without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24 bits no missing codes (guaranteed at filter notches ≤60 Hz) |
| Integral Nonlinearity | ±0.0015% of FSR max (ensures accurate endpoint linearity in precision weighing and transducer applications) |
| Analog Supply Range | +4.75 V to +5.25 V (supports robust 5 V system integration with margin for rail variation) |
| Total Supply Current | ≤500 µA typ at fCLKIN = 1 MHz (enables use in loop-powered 4–20 mA systems with tight power budgets) |
| Input Configuration | Five pseudo-differential or three fully differential analog inputs (flexible sensor interfacing without external multiplexing) |
| Reference Input Voltage | +2.5 V nominal (±1% for specified performance; enables ratiometric measurement with stable external references) |
| Digital Interface | 3-wire SPI-compatible serial (reduces isolation component count in safety-critical industrial designs) |
Pinout & Package
AD7714ARSZ-5 is housed in a 24-lead TSSOP (Thin Shrink Small Outline Package), 0.15 inch body width, with exposed pad for thermal enhancement. Pin numbering follows standard JEDEC TSSOP conventions (pin 1 marked by dot or bevel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1–AIN6 | Analog input channels | Supports five pseudo-differential (e.g., AIN1+/AIN1−, AIN2+/AIN2−, etc.) or three fully differential configurations; internal switching matrix routes to modulator |
| REF IN(+), REF IN(–) | Differential reference inputs | Defines full-scale range; accepts +2.5 V differential voltage; rejects common-mode noise up to 150 dB at 50/60 Hz |
| AVDD, AGND | Analog power and ground | Separate analog domain supply (+4.75 V to +5.25 V); isolation from digital domain minimizes noise coupling into sensitive analog path |
| DVDD, DGND | Digital power and ground | Digital supply range +3 V to +5.25 V; independent grounding prevents digital switching noise from corrupting ADC conversion |
| SCLK, DIN, DOUT, CS | Serial interface signals | 3-wire SPI-compatible protocol; CS enables device selection; DOUT is tri-state; supports daisy-chaining and opto-isolation-friendly timing |
| DRDY | Data ready output | Open-drain flag indicating valid conversion result; synchronizes host MCU read operations without polling overhead |
| MCLK IN/OUT | Master clock I/O | Accepts external crystal/resonator or clock source (400 kHz–2.5 MHz); MCLK OUT provides buffered clock for system synchronization |
| SYNC, RESET, POL | Control and configuration | SYNC initiates synchronized conversions across multiple devices; RESET clears registers; POL selects unipolar/bipolar coding |
Key Features
| Feature | Design Value |
|---|---|
| On-chip programmable-gain amplifier (PGA) | Gains 1–128 eliminate need for external signal conditioning when interfacing directly to strain gauges or pressure transducers |
| Software-configurable digital filter | First-notch cutoff programmable to reject 50/60 Hz line interference and optimize settling time per application requirement |
| Three calibration modes | Self-calibration removes zero- and full-scale errors; system calibration compensates for external component drift; background calibration maintains accuracy during continuous operation |
| Low-noise analog front end | <150 nVrms noise enables resolution of sub-microvolt-level sensor outputs without external amplification |
| High common-mode rejection | ≥150 dB at 50/60 Hz ensures reliable operation in electrically noisy industrial environments with long sensor cables |
Applications
| Portable Weigh Scales | Pressure Transducers |
|---|---|
|
Use Scenario: Battery-powered handheld scales measuring load cells with mV/V output in field service or logistics. IC Role / Device Role / Timing Role: Primary sigma-delta ADC with integrated PGA and reference buffer; performs direct digitization of low-level bridge outputs. Use Value: 24-bit resolution and ±0.0015% INL enable 10,000+ count readability; low 500 µA supply current extends battery life beyond 12 months. |
Use Scenario: Industrial pressure sensors mounted in pump housings or HVAC ducts, subject to EMI and wide temperature swings. IC Role / Device Role / Timing Role: High-accuracy analog front end converting millivolt-level piezoresistive outputs into calibrated digital values for PLC or gateway transmission. Use Value: 150 dB common-mode rejection at 50/60 Hz suppresses motor-drive noise; on-chip self-calibration maintains accuracy across –40°C to +85°C operating range. |
| Loop-Powered Systems | Smart Industrial Instruments |
|
Use Scenario: 4–20 mA current-loop transmitters powering remote sensors while delivering digitized process variables. IC Role / Device Role / Timing Role: Low-power ADC core enabling full signal chain operation within 3.5 mA budget; interfaces to HART modem via serial port. Use Value: Total supply current ≤500 µA at 1 MHz clock allows headroom for microcontroller, isolator, and DAC - meeting strict loop power constraints. |
Use Scenario: DIN-rail-mounted analyzers monitoring pH, conductivity, or dissolved oxygen in water treatment plants. IC Role / Device Role / Timing Role: Precision ADC subsystem handling multi-sensor inputs (e.g., RTD, thermocouple, analog voltage) with automatic channel sequencing and filtering. Use Value: Five pseudo-differential inputs reduce external multiplexer cost; programmable filter cutoffs adapt to varying sensor response times and noise profiles. |
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 |
|---|---|---|---|
| AD7718BRUZ | 24-bit, 8-channel, 5 V operation; includes internal 2.5 V reference and burnout current sources; TSSOP-28 package | Higher channel count and integrated reference simplify BOM but require larger PCB footprint and lack AD7714ARSZ-5's flexible 3-/5-input configuration | Select AD7718BRUZ when needing more inputs and reference integration; retain AD7714ARSZ-5 for minimal footprint and precise gain/frequency tuning in space-constrained loop-powered designs |
| ADS1258IPW | 24-bit, 8-channel, 5 V operation; faster throughput (up to 125 kSPS vs. AD7714ARSZ-5's ~100 SPS at 24-bit); QFN-28 package | Optimized for higher-speed data logging rather than ultra-low-noise DC measurements; lower CMRR (100 dB) and no built-in burnout detection | Choose ADS1258IPW for multi-channel scanning systems requiring speed; prefer AD7714ARSZ-5 for static or slow-varying signals demanding maximum noise immunity and line-frequency rejection |
Compared with AD7714ARSZ-5, AD7718BRUZ adds integration at the cost of configurability, while ADS1258IPW trades deep filtering and CMRR for speed - making AD7714ARSZ-5 uniquely suited for ultra-stable, low-power, noise-immune industrial DC measurements where 24-bit integrity is non-negotiable.
Availability
AD7714ARSZ-5 is available at Aetrix Electronics and suitable for portable industrial instruments, loop-powered transmitters, and smart sensor modules requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for AD7714ARSZ-5 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, serving industrial, automotive, communications, and healthcare markets since 1965.
The AD7714 product line was designed specifically for low-frequency, high-resolution sensor signal conditioning - targeting applications where DC accuracy, noise rejection, and self-calibration are essential, such as precision weigh scales and process control instrumentation.
FAQ
What is the operating temperature range for AD7714ARSZ-5?
The AD7714ARSZ-5 is rated for operation from –40°C to +85°C. This A-grade specification aligns with industrial ambient requirements and is validated across the full supply voltage range (+4.75 V to +5.25 V AVDD). Unlike the Y-grade AD7714YRU, it does not support the extended –40°C to +105°C range.
Does AD7714ARSZ-5 include Schmitt-trigger inputs on SCLK and DIN?
No, Schmitt-trigger inputs on SCLK and DIN are exclusive to the Y-grade variants (e.g., AD7714YRU). The AD7714ARSZ-5 uses standard CMOS logic thresholds: VINH ≥2.4 V and VINL ≤0.8 V at DVDD = +5 V. Designers must ensure clean, slew-rate-controlled clock and data signals to avoid metastability.
What reference voltage should be used with AD7714ARSZ-5?
AD7714ARSZ-5 requires a +2.5 V differential reference voltage (REF IN(+) – REF IN(–)) for specified performance. The device functions with lower references (down to ±1% tolerance), but full 24-bit no-missing-codes and ±0.0015% INL are guaranteed only at +2.5 V ±1%. External references like ADR421 or REF192 are commonly paired.
Can AD7714ARSZ-5 operate with a 3 V digital supply while using 5 V analog supply?
Yes. AD7714ARSZ-5 supports independent DVDD and AVDD supplies: AVDD = +4.75 V to +5.25 V and DVDD = +3 V to +5.25 V. This allows interfacing with 3 V microcontrollers while maintaining full analog performance - confirmed in the AD7714-5 specifications table under "Power Requirements".
How many analog input channels does AD7714ARSZ-5 support, and how are they configured?
AD7714ARSZ-5 supports five pseudo-differential inputs (e.g., AIN1+/AIN1−, AIN2+/AIN2−, ..., AIN5+/AIN5−) or three fully differential inputs (e.g., AIN1+/AIN1−, AIN2+/AIN2−, AIN3+/AIN3−), selected via the SETUP register. The internal switching matrix and PGA allow flexible routing without external hardware changes.
AD7714ARSZ-5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- 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:
- 5V
- 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-5 FAQ
1.How can I place an order for AD7714ARSZ-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7714ARSZ-5 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-5 reliable?
The price and inventory of AD7714ARSZ-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7714ARSZ-5 is usually 5 days.
3.What payment methods are accepted for AD7714ARSZ-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7714ARSZ-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7714ARSZ-5?
AD7714ARSZ-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7714ARSZ-5 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-5?
For technical support, including AD7714ARSZ-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7714ARSZ-5 requirements.
6.How does Aetrix verify that AD7714ARSZ-5 is sourced from the original manufacturer or authorized distributors?
All AD7714ARSZ-5 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-5 meets industry standards.
7.What is the process for return or replacement of AD7714ARSZ-5?
All AD7714ARSZ-5 units undergo pre-shipment inspection (PSI). If there is an issue with AD7714ARSZ-5, 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-5 part is unused and in its original packaging.
Return procedure for AD7714ARSZ-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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