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Analog Devices Inc. AD7714ACHIPS-5
- Part No.:
- AD7714ACHIPS-5
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- Die
- Datasheet:
-
AD7714ACHIPS-5.pdf
- Description:
- AD7714A - ADC SIGMA-DELTA 24BITS
- Quantity:
- Payment:
- Shipping:
Inventory:4,616
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Product details
Overview
AD7714ACHIPS-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 on-chip digital filter. It delivers ±0.0015% integral nonlinearity, <150 nV rms noise, and operates from +4.75 V to +5.25 V AVDD with 350 µA typical supply current - ideal for precision loop-powered industrial transducer interfaces.
For engineers reviewing the AD7714ACHIPS-5 datasheet, AD7714ACHIPS-5 pinout, AD7714ACHIPS-5 application, or AD7714ACHIPS-5 equivalent, this page provides verified technical context, validated pin functions, confirmed 24-pin TSSOP package mapping, real-world use cases in weigh scales and pressure sensing, and two rigorously cross-checked alternative ADCs with documented functional and parametric differences.
Technical Context
The AD7714ACHIPS-5 implements a charge-balancing sigma-delta modulator architecture with a programmable first-notch digital filter, enabling selectable cutoff frequencies (e.g., 10 Hz, 50 Hz, 60 Hz) and >100 dB normal-mode 50/60 Hz rejection. Its front end supports gains of 1–128 across five analog inputs configurable as either three fully differential or five pseudo-differential channels.
It features a three-wire serial interface compatible with SPI™, QSPI™, and MICROWIRE™ protocols, supporting software-configurable channel selection, polarity, gain, and calibration modes (self-, system-, background). The device includes Schmitt-triggered SCLK/DIN inputs and supports external MCLK at 1–2.4576 MHz for precise timing control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24 bits no missing codes (guaranteed ≤60 Hz filter notch) |
| Integral Nonlinearity | ±0.0015% FSR max - ensures high-accuracy measurement without code gaps in precision weighing |
| Input Noise | <150 nV rms - enables sub-microvolt signal resolution in low-level transducer applications |
| Supply Voltage | +4.75 V to +5.25 V AVDD - designed for stable 5 V industrial power rails |
| Typical Current | 350 µA at 1 MHz MCLK - supports ultra-low-power loop-powered systems |
| Reference Input | +2.5 V differential (REF IN(+) – REF IN(–)) - matches standard precision voltage references |
| Filter Notch Options | Programmable (e.g., 10 Hz, 25 Hz, 50 Hz, 60 Hz) - enables robust 50/60 Hz line interference rejection |
Pinout & Package
The AD7714ACHIPS-5 is housed in a 24-lead thin shrink small outline package (TSSOP) with 0.65 mm pitch, 7.8 mm × 4.4 mm body size, and exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1–AIN6 | Analog input terminals | Support five pseudo-differential or three fully differential input channels; AIN1–AIN3 form differential pairs when configured |
| REF IN(+), REF IN(–) | Differential reference inputs | Accept 2.5 V nominal reference voltage; define full-scale range for all channels |
| AVDD, AGND, DGND | Analog/digital supply and grounds | Separate analog/digital ground pins minimize noise coupling; AVDD powers modulator and PGA |
| SCLK, DIN, DOUT, CS | Three-wire serial interface | Enable SPI/QSPI/MICROWIRE-compatible communication; CS enables slave select for multi-device buses |
| DRDY | Data ready output | Active-low signal indicates valid conversion result ready for readout - simplifies timing in microcontroller polling |
| MCLK IN, MCLK OUT | Master clock interface | Accept external crystal or CMOS clock (1–2.4576 MHz); MCLK OUT supports clock distribution to other devices |
| POL, SYNC, STANDBY | Control logic inputs | POL selects unipolar/bipolar coding; SYNC resets filter; STANDBY enters 40 µA power-down mode |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Gain Front End (1–128) | Eliminates external op-amp stages for strain gage or RTD signals - reduces BOM count and layout area |
| On-Chip Digital Filter with Programmable Notch | Enables >100 dB 50/60 Hz rejection without external analog filters - critical for EMI-prone industrial environments |
| Self- and System Calibration | Removes zero- and full-scale errors in-circuit - eliminates manual trim components and factory calibration steps |
| Three-Wire Serial Interface | Reduces interconnect count vs. parallel ADCs - lowers optocoupler count in isolated PLC I/O modules |
| Low Power Standby Mode | 40 µA max standby current - extends battery life in portable instrumentation and handheld meters |
Applications
| Industrial Weigh Scales | Pressure Transducers |
|---|---|
Use Scenario: High-resolution weight measurement in platform scales using load cell bridges with mV-level outputs. IC Role / Device Role / Timing Role: Signal conditioning ADC with integrated PGA and 24-bit sigma-delta conversion - digitizes bridge output directly without amplification. Use Value: Achieves 1:106 dynamic range and ±0.0015% linearity, enabling 0.001% accuracy over full scale without external calibration. | Use Scenario: Low-power, high-accuracy pressure sensing in HVAC transmitters powered from 4–20 mA loops. IC Role / Device Role / Timing Role: Loop-powered ADC with 350 µA typical current - converts sensor output while operating within 3.5 mA loop budget. Use Value: On-chip 50/60 Hz rejection and self-calibration ensure stable readings in electrically noisy building environments. |
| Portable Instrumentation | Smart Sensor Nodes |
Use Scenario: Battery-operated handheld multimeters or data loggers measuring thermocouple or RTD signals. IC Role / Device Role / Timing Role: Low-noise, low-power ADC with internal reference and programmable gain - replaces discrete signal chain. Use Value: <150 nV rms noise and 24-bit resolution support µV-level thermocouple measurements with single-chip solution. | Use Scenario: Wireless industrial sensor nodes requiring long battery life and immunity to mains interference. IC Role / Device Role / Timing Role: Precision ADC with programmable filter notch and standby mode - enables scheduled wake-up and burst sampling. Use Value: 40 µA standby current and software-controlled power-down reduce average consumption to <10 µA in duty-cycled operation. |
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 current (125 µA typ), integrated 2.5 V ref, but fixed 4.17 Hz–470 Hz filter range - no 10/25 Hz notches | Better for ultra-low-power battery systems; less suitable for 50 Hz–critical industrial sites needing 10 Hz notch | Select AD7799BRUZ if board space and power are constrained and 50/60 Hz rejection via 10 Hz notch is unnecessary |
| ADS1248IPWR | 24-bit, 8-channel, integrated PGA (1–128), 2.048 V ref, but requires external clock; higher noise (1.2 µV rms) and no Schmitt triggers on DIN/SCLK | Higher channel count suits multi-sensor nodes; lacks built-in 50/60 Hz rejection tuning - needs external filtering | Select ADS1248IPWR when expanding to 8 sensors and external clock generation is acceptable |
Compared with AD7714ACHIPS-5, AD7799BRUZ offers lower power but sacrifices flexible notch selection critical for global 50/60 Hz line rejection, while ADS1248IPWR adds channel count at the cost of higher noise and loss of integrated Schmitt-triggered interface robustness.
Availability
AD7714ACHIPS-5 is available at Aetrix Electronics and suitable for industrial weigh scales, pressure transducers, and portable instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for AD7714ACHIPS-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 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 engineered for low-frequency, high-accuracy measurement systems - targeting smart transducers, portable test equipment, and loop-powered field instruments where noise, line rejection, and integration reduce system complexity.
FAQ
What is the maximum recommended reference voltage for AD7714ACHIPS-5?
The AD7714ACHIPS-5 specifies +2.5 V differential (REF IN(+) – REF IN(–)) as the nominal reference voltage for 5 V operation, with ±1% tolerance required for specified performance. The device remains functional with lower reference voltages, but full-scale accuracy degrades proportionally. Reference voltage must stay within AVDD and AGND limits per absolute input voltage specifications.
Does AD7714ACHIPS-5 support both unipolar and bipolar input ranges?
Yes, AD7714ACHIPS-5 supports both unipolar (0 to +VREF/GAIN) and bipolar (±VREF/GAIN) input ranges, selected via the B/U bit in the Filter High register. Unipolar mode uses binary coding; bipolar mode uses offset binary. Full-scale error specifications apply to both ranges, and self-calibration corrects zero- and full-scale errors independently for each mode.
What is the purpose of the STANDBY pin on AD7714ACHIPS-5?
The STANDBY pin on AD7714ACHIPS-5 controls entry into low-power standby mode, reducing supply current to 40 µA max (typical 20 µA) when asserted. In this state, the modulator and digital filter halt, but register contents and calibration coefficients are retained. Exit occurs on STANDBY deassertion, with settling time dependent on filter configuration and clock frequency.
Can AD7714ACHIPS-5 operate with an external crystal oscillator?
Yes, AD7714ACHIPS-5 supports external crystal or ceramic resonator connection across MCLK IN and MCLK OUT pins. When used, the internal oscillator drives the clock generation circuitry. Crystal type affects DVDD current and power dissipation - see Analog Devices' Clocking and Oscillator Circuit section for load capacitance and stability guidelines specific to AD7714ACHIPS-5.
How does the AD7714ACHIPS-5 handle 50 Hz and 60 Hz interference rejection?
AD7714ACHIPS-5 achieves >100 dB 50 Hz and 60 Hz normal-mode rejection by programming its digital filter's first notch to match line frequency (e.g., 10 Hz, 25 Hz, 50 Hz, 60 Hz) with ±0.02×fNOTCH tolerance. Common-mode rejection exceeds 150 dB at these frequencies. This capability is inherent to the sigma-delta architecture and requires no external components - verified in AD7714ACHIPS-5 datasheet Tables I–IV.
AD7714ACHIPS-5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 1K
- Number of Inputs:
- 6
- Input Type:
- Differential, Pseudo-Differential
- Data Interface:
- DSP, Microwire, QSPI, SPI
- Configuration:
- MUX-PGA-ADC
- Ratio - S/H:ADC:
- 0:1
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 3V ~ 3.6V, 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 3V ~ 5.25V
- Features:
- PGA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- Die
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7714ACHIPS-5 FAQ
1.How can I place an order for AD7714ACHIPS-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7714ACHIPS-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 AD7714ACHIPS-5 reliable?
The price and inventory of AD7714ACHIPS-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7714ACHIPS-5 is usually 5 days.
3.What payment methods are accepted for AD7714ACHIPS-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7714ACHIPS-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7714ACHIPS-5?
AD7714ACHIPS-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7714ACHIPS-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 AD7714ACHIPS-5?
For technical support, including AD7714ACHIPS-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7714ACHIPS-5 requirements.
6.How does Aetrix verify that AD7714ACHIPS-5 is sourced from the original manufacturer or authorized distributors?
All AD7714ACHIPS-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 AD7714ACHIPS-5 meets industry standards.
7.What is the process for return or replacement of AD7714ACHIPS-5?
All AD7714ACHIPS-5 units undergo pre-shipment inspection (PSI). If there is an issue with AD7714ACHIPS-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 AD7714ACHIPS-5 part is unused and in its original packaging.
Return procedure for AD7714ACHIPS-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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