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Analog Devices Inc. AD7715ARUZ-5
- Part No.:
- AD7715ARUZ-5
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7715ARUZ-5.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,619
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Product details
Overview
AD7715ARUZ-5 from Analog Devices is a 16-bit sigma-delta analog-to-digital converter optimized for low-frequency, high-accuracy sensor signal conditioning. It features a programmable gain amplifier (gains 1/2/32/128), differential analog and reference inputs, and operates from a 5 V analog supply with 450 µA typical supply current. It delivers 16-bit no-missing-codes performance with ±0.0015% integral nonlinearity and supports unipolar/bipolar input ranges up to ±2.5 V - ideal for precision pressure and temperature transducer interfaces.
For engineers reviewing the AD7715ARUZ-5 datasheet, AD7715ARUZ-5 pinout, AD7715ARUZ-5 application, or AD7715ARUZ-5 equivalent, key selection criteria include its 5 V operation variant (AD7715-5), three-wire SPI/MICROWIRE-compatible serial interface, on-chip self- and system-calibration capability, and programmable digital filter notch for 50/60 Hz rejection in industrial measurement systems.
Technical Context
The AD7715ARUZ-5 employs a charge-balancing sigma-delta modulator with an integrated digital filter whose first notch frequency is software-programmable - enabling precise 50 Hz or 60 Hz line interference rejection. Its analog front end includes a buffered or unbuffered differential input path and a fully differential reference input, supporting both unipolar (0–2.5 V) and bipolar (±2.5 V) signal ranges referenced to AGND.
It uses a 16-bit offset binary or straight binary output coding scheme depending on polarity mode, and integrates register-based control of gain, update rate, buffer enable, and calibration sequences via a three-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP protocols - eliminating need for external timing or control logic in microcontroller-based data acquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit no missing codes - guarantees monotonicity and full code coverage across full-scale range |
| Integral Nonlinearity | ±0.0015% FSR - ensures <1 LSB error at 16-bit level for high-accuracy calibration-critical applications |
| Supply Voltage | AVDD = 4.75–5.25 V - defines valid operating window for AD7715-5 variant; DVDD = 3–5.25 V supports mixed-voltage digital interfacing |
| Supply Current | 450 µA max @ 3 V supplies; 0.27–1.1 mA @ 5 V - enables low-power portable instrumentation without sacrificing resolution |
| Input Ranges | Unipolar: 0–2.5 V; Bipolar: ±2.5 V - selectable via B/U bit, with PGA gains 1/2/32/128 scaling transducer outputs directly |
| 50/60 Hz Rejection | 98 dB normal-mode, 150 dB common-mode - achieved via programmable digital filter notch, critical for EMI-prone industrial environments |
| Reference Input | REF IN(+) − REF IN(−) = 2.5 V nominal - fixed reference voltage requirement for AD7715-5; ±1% tolerance maintains specified accuracy |
Pinout & Package
AD7715ARUZ-5 is housed in a 16-lead TSSOP package (RU-16), 4.4 mm × 5.0 mm body, 0.65 mm pitch, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCLK | Serial clock input | Controls timing of all serial read/write operations; compatible with SPI, MICROWIRE, and DSP interfaces |
| DOUT | Serial data output | Three-state output delivering conversion results and register contents; driven only when CS is low and SCLK active |
| DIN | Serial data input | Accepts configuration commands (gain, filter, calibration) and register writes; sampled on SCLK rising edge |
| CS | Chip select | Active-low enable for serial interface; must be held low during entire multi-bit transaction |
| DRDY | Data ready indicator | Open-drain output signals completion of conversion; used for interrupt-driven or polled data acquisition |
| RESET | Hardware reset | Pulse ≥100 ns resets internal registers and initiates power-on calibration sequence |
| MCLK IN / MCLK OUT | Master clock oscillator terminals | Support crystal/resonator (1–2.4576 MHz) or external CMOS clock; MCLK OUT is high-impedance when external clock used |
| AIN(+), AIN(–) | Differential analog input | High-impedance inputs accepting transducer-level signals; support buffered/unbuffered modes via setup register |
| REF IN(+), REF IN(–) | Differential reference input | Defines full-scale range; requires 2.5 V differential for AD7715-5; rejects common-mode noise up to 150 dB |
| AVDD, DVDD | Analog/digital power supplies | Separate 5 V analog (AVDD) and 3–5.25 V digital (DVDD) rails minimize noise coupling between domains |
| AGND, DGND | Analog/digital ground | Independent ground pins require star grounding or split-plane layout to preserve 16-bit integrity |
Key Features
| Feature | Design Value |
|---|---|
| Programmable gain amplifier | Gains of 1, 2, 32, or 128 eliminate external signal conditioning for mV-level transducer outputs |
| On-chip calibration | Self-calibration removes internal offset/gain errors; system calibration corrects sensor and PCB-level drift |
| Configurable digital filter | First-notch frequency programmable to reject 50 Hz or 60 Hz line interference without external components |
| Three-wire serial interface | Reduces interconnect count vs parallel ADCs; supports isolation via fewer optocouplers in safety-critical systems |
| Low-power standby mode | 10 µA typical standby current enables battery-powered operation with fast wake-up (<1 ms) |
Applications
| Pressure Measurement | Temperature Sensing |
|---|---|
Use Scenario: High-resolution pressure monitoring in HVAC ducts or medical infusion pumps using strain-gauge or piezoresistive sensors. IC Role / Device Role / Timing Role: Front-end ADC digitizing low-level ratiometric bridge outputs; performs gain scaling, filtering, and offset correction before MCU processing. Use Value: 16-bit resolution and ±0.0015% INL enable sub-0.1% FS pressure accuracy; 50/60 Hz rejection ensures stable readings near motors or AC wiring. | Use Scenario: Precision RTD or thermocouple measurements in industrial process controllers requiring NIST-traceable accuracy. IC Role / Device Role / Timing Role: Direct digitization of conditioned sensor voltage with integrated reference; handles bipolar input for thermocouple cold-junction compensation. Use Value: Differential input and 150 dB common-mode rejection suppress thermal EMF noise; on-chip calibration eliminates sensor linearization firmware overhead. |
| Smart Transmitters | Portable Instrumentation |
Use Scenario: 4–20 mA loop-powered field transmitters with HART communication, where space and power are constrained. IC Role / Device Role / Timing Role: Primary ADC in two-wire transmitter architecture; interfaces to loop-powered MCU and isolator via 3-wire serial bus. Use Value: 450 µA supply current at 3 V allows full functionality within 3.5 mA loop budget; TSSOP package fits compact 24 mm × 24 mm transmitter PCBs. | Use Scenario: Handheld multimeters or environmental data loggers powered by coin-cell or AA batteries. IC Role / Device Role / Timing Role: Low-noise, low-drift ADC core enabling >100 kSPS effective sampling with oversampling and decimation. Use Value: 10 µA standby current extends battery life to >1 year in sleep-wake cycles; 550 nV rms noise supports 5½-digit display resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sigma-delta ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7714ARUZ | 5-channel 16-bit sigma-delta ADC; same pinout and register map; higher channel count but no PGA gain of 128 | Multi-sensor systems requiring simultaneous sampling; less suitable for ultra-low-level single-transducer signals | Select AD7714ARUZ when expanding to multi-input designs without changing PCB layout |
| ADS1248IPWR | 24-bit delta-sigma ADC; integrated PGA (1–128), reference, and burnout current sources; SPI interface | Higher resolution required for weigh scales or analytical instruments; larger 28-pin TSSOP footprint | Choose ADS1248IPWR when upgrading resolution beyond 16 bits while retaining transducer interface simplicity |
Compared with AD7715ARUZ-5, AD7714ARUZ offers identical single-channel performance in a pin-compatible 5-channel variant, whereas ADS1248IPWR provides 24-bit resolution and on-chip excitation at the cost of increased size and power - making AD7715ARUZ-5 optimal for cost-sensitive, space-constrained 16-bit industrial sensing.
Availability
AD7715ARUZ-5 is available at Aetrix Electronics and suitable for pressure measurement, temperature sensing, smart transmitter design, and portable instrumentation requiring stable component supply across long production lifecycles.
Supply support for AD7715ARUZ-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, headquartered in Wilmington, MA.
The AD7715 belongs to Analog Devices' precision sigma-delta ADC product line, engineered specifically for low-frequency, high-accuracy industrial and scientific measurement systems where noise immunity, calibration stability, and transducer-level signal integrity are critical.
FAQ
What is the maximum master clock frequency supported by the AD7715ARUZ-5?
The AD7715ARUZ-5 is guaranteed to operate with a master clock frequency up to 2.4576 MHz, and characterization confirms functionality from 400 kHz to 2.5 MHz. At 2.4576 MHz, it achieves optimal timing margins for serial interface operations and supports faster output update rates - particularly with PGA gains of 1 or 2 where sampling rate equals fCLK_IN/64.
Does the AD7715ARUZ-5 support both unipolar and bipolar input configurations?
Yes, the AD7715ARUZ-5 supports both unipolar (0 mV to 2.5 V) and bipolar (±2.5 V) input ranges, selected via the B/U bit in the Setup Register. The bipolar range is referenced to AIN(–), and both modes maintain 16-bit no-missing-codes performance and ±0.0015% integral nonlinearity when used within specified gain and filter settings.
How does the AD7715ARUZ-5 handle power supply rejection in noisy industrial environments?
The AD7715ARUZ-5 achieves >120 dB power supply rejection ratio (PSRR) at 50/60 Hz when configured with appropriate digital filter notches (25 Hz/20 Hz). PSRR improves with higher PGA gain - 95 dB typical at gains 32 and 128 - and is further enhanced by separate AVDD/DVDD and AGND/DGND pins, enabling clean analog domain isolation in electrically hostile settings.
Can the AD7715ARUZ-5 perform system-level calibration, and what signals are required?
Yes, the AD7715ARUZ-5 supports system calibration to remove gain and offset errors introduced by external circuitry. It requires applying known zero-scale (shorted inputs) and full-scale (precision reference voltage) signals to AIN(+)/AIN(–) while executing dedicated calibration commands via the serial interface - no external DAC or controller is needed beyond the host MCU.
What package type and RoHS status does the AD7715ARUZ-5 use?
The AD7715ARUZ-5 is supplied in a 16-lead TSSOP package (RU-16), measuring 4.4 mm × 5.0 mm with 0.65 mm lead pitch. It is lead-free and RoHS-compliant per Analog Devices' standard product release, with JEDEC-standard reflow profile compatibility and moisture sensitivity level (MSL) 1 rating.
AD7715ARUZ-5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 500
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI, DSP
- Configuration:
- 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:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7715ARUZ-5 FAQ
1.How can I place an order for AD7715ARUZ-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7715ARUZ-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 AD7715ARUZ-5 reliable?
The price and inventory of AD7715ARUZ-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7715ARUZ-5 is usually 5 days.
3.What payment methods are accepted for AD7715ARUZ-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7715ARUZ-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7715ARUZ-5?
AD7715ARUZ-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7715ARUZ-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 AD7715ARUZ-5?
For technical support, including AD7715ARUZ-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7715ARUZ-5 requirements.
6.How does Aetrix verify that AD7715ARUZ-5 is sourced from the original manufacturer or authorized distributors?
All AD7715ARUZ-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 AD7715ARUZ-5 meets industry standards.
7.What is the process for return or replacement of AD7715ARUZ-5?
All AD7715ARUZ-5 units undergo pre-shipment inspection (PSI). If there is an issue with AD7715ARUZ-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 AD7715ARUZ-5 part is unused and in its original packaging.
Return procedure for AD7715ARUZ-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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