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Renesas ISL26314FVZ-T7A
- Part No.:
- ISL26314FVZ-T7A
- Manufacturer:
- Renesas
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ISL26314FVZ-T7A.pdf
- Description:
- IC ADC 12BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:165
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Product details
Overview
ISL26314FVZ-T7A from Renesas Electronics (formerly Intersil) is a 12-bit, 125kSPS SAR analog-to-digital converter with four differential input channels, SPI-compatible serial interface, and industrial-grade operation from -40°C to +125°C. It delivers 73.4dB SNR, -86dB THD, and ±0.7LSB DNL, enabling high-accuracy voltage measurements in multichannel sensor signal conditioning systems.
For engineers reviewing the ISL26314FVZ-T7A datasheet, ISL26314FVZ-T7A pinout, ISL26314FVZ-T7A application, or ISL26314FVZ-T7A equivalent, key selection considerations include its 4-channel differential input architecture, 2.2mA operating current at 125kSPS, Auto Power-down mode (8µA typical), 2.7V–5.25V supply range, and TSSOP-16 RoHS-compliant package.
Technical Context
This SAR ADC employs capacitor-based charge redistribution with an on-chip oscillator and power-on reset (POR). Its proprietary input multiplexer and buffered analog front-end reduce external drive requirements while maintaining full-scale accuracy up to VDD.
The device supports three SPI read modes (RAC, RDC, RSC), uses two's complement output coding for differential inputs, and features configurable auto power-down and auto sleep modes-recovery times are 150µs (power-down) and 2.1µs (sleep), respectively.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes; ensures monotonicity and unambiguous digital representation of analog inputs. |
| Sampling Rate | 125kSPS maximum; supports real-time acquisition of fast-changing industrial sensor signals. |
| Differential Input Channels | 4 independent differential pairs (AIN0±, AIN1±, AIN2±, AIN3±); enables simultaneous multi-sensor measurement without external MUX. |
| SNR / SINAD | 73.4dB / 73.1dB at 10kHz; provides >11.7 effective bits for precision energy metering and process control. |
| Power Consumption | 11mW at 125kSPS; enables thermally constrained designs in sealed industrial enclosures. |
| Supply Range | 2.7V to 5.25V; interoperable with both 3.3V and 5V system rails without level-shifting. |
| ESD Rating | 5kV HBM; withstands handling and board-level transients in factory automation environments. |
Pinout & Package
ISL26314FVZ-T7A is housed in a 16-lead TSSOP package (RoHS-compliant, JEDEC MO-173, pkg drawing M16.173) with 0.65mm lead pitch and exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply input | Accepts 2.7V–5.25V; must be decoupled with 1µF ceramic capacitor near pin for stable reference and low-noise conversion. |
| GND | Analog/digital ground reference | Shared ground plane required; pin 2 and pin 4 serve as primary GND connections for noise isolation. |
| VREF | External reference voltage input | Defines full-scale range (2×VREF for differential); accepts 2V–VDD; requires local 1µF decoupling. |
| AIN0+ / AIN0− | Differential channel 0 input pair | High-impedance buffered inputs; common-mode range centered at VREF/2 ±200mV. |
| AIN1+ / AIN1− | Differential channel 1 input pair | Functionally identical to AIN0±; supports independent gain/offset calibration per channel. |
| AIN2+ / AIN2− | Differential channel 2 input pair | Enables third isolated differential measurement path; shares same internal buffer architecture. |
| AIN3+ / AIN3− | Differential channel 3 input pair | Completes 4-channel differential capability; all inputs specified for operation up to VDD. |
| SDI | Serial data input | Configures device via SPI write; accepts commands for mode selection, register access, and power control. |
| SDO | Serial data output | Delivers 12-bit conversion result MSB-first in two's complement format; supports EOC indication. |
| SCLK | Serial clock input | Up to 20MHz; controls timing of SDI sampling and SDO output; defines RAC/RDC/RSC operational mode. |
| CNV | Conversion control input | Edge-triggered: falling edge initiates acquisition, rising edge starts conversion sequence. |
| NC | No-connect terminal | Pins 6, 8, 9, 11 are internally unused; must remain unconnected or tied to GND per layout best practice. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-compatible family | Shares identical TSSOP-16 footprint with ISL26312FVZ (2ch diff) and ISL26315FVZ (4ch SE), enabling layout reuse across design variants. |
| Differential non-linearity | ±0.7LSB max over -40°C to +125°C; guarantees monotonic behavior and accurate transfer function in harsh environments. |
| Low THD | -86dB typical at 10kHz; minimizes harmonic distortion in precision pressure and flow sensor digitization. |
| Auto Power-down mode | Reduces quiescent current to 8µA typical between conversions; extends battery life in portable industrial monitors. |
| Input multiplexer + buffer | Reduces effective input capacitance to 4pF and average input current to 2.5µA; simplifies anti-alias filter design and sensor interfacing. |
| Industrial temperature range | Specified from -40°C to +125°C; qualified for use in motor drives, PLC I/O modules, and downhole instrumentation. |
Applications
| Pressure Sensor Signal Conditioning | Energy Metering Front-End |
|---|---|
|
Use Scenario: Digitizing millivolt-level bridge outputs from piezoresistive pressure transducers in HVAC and industrial process control. IC Role / Device Role / Timing Role: 4-channel differential ADC acquires synchronized ratiometric measurements while rejecting common-mode noise from long sensor cables. Use Value: Enables direct connection to unamplified bridges with 73.4dB SNR and ±0.7LSB DNL, eliminating need for discrete instrumentation amplifiers. |
Use Scenario: Sampling voltage and current waveforms in Class 0.5 and Class 1 polyphase electricity meters. IC Role / Device Role / Timing Role: Simultaneous 4-channel differential acquisition captures phase-aligned voltage/current pairs for real-time RMS and power calculation. Use Value: Delivers 11.7 ENOB at 125kSPS with -86dB THD, meeting IEC 62053-21 harmonic distortion requirements. |
| Multichannel Data Acquisition System | Flow Controller Analog Interface |
|
Use Scenario: High-density analog input module for PLCs and distributed I/O systems requiring 4 isolated differential sensor inputs. IC Role / Device Role / Timing Role: Single-chip 4-channel solution replaces multiple single-channel ADCs, reducing BOM count and PCB area by >40%. Use Value: Pin-compatible upgrade path from ISL26312FVZ (2ch) allows scalable channel expansion without layout redesign. |
Use Scenario: Closed-loop flow control using differential pressure (ΔP) and temperature compensation in Coriolis and thermal mass flow meters. IC Role / Device Role / Timing Role: Simultaneous sampling of ΔP sensor, RTD, and auxiliary diagnostics channels with matched acquisition timing. Use Value: 150µs power-down recovery enables rapid channel cycling while maintaining <1LSB gain error matching across all 4 channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-channel differential ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8684IPWR | 16-bit resolution, 500kSPS, SPI interface, but requires external reference and higher supply current (8.5mA). | Better resolution for metrology-grade systems; less suitable for ultra-low-power battery-operated nodes. | Choose ADS8684IPWR when ENOB >14 is required and system power budget allows >7× higher active current. |
| MAX11134ETK+ | 14-bit, 500kSPS, 4-channel differential, integrated reference, but rated only to +85°C ambient. | Limited to commercial/industrial indoor environments; lacks extended temperature qualification. | Choose MAX11134ETK+ for space-constrained designs needing integrated reference and higher speed, where ambient does not exceed +85°C. |
Compared with ISL26314FVZ-T7A, ADS8684IPWR offers higher resolution and speed at significantly higher power cost, while MAX11134ETK+ trades industrial temperature range for integrated reference and smaller footprint-neither is pin-compatible, and both require PCB layout changes.
Availability
ISL26314FVZ-T7A is available at Aetrix Electronics and suitable for industrial process control, energy measurement, and multichannel data acquisition systems requiring stable component supply, long-term lifecycle support, and guaranteed RoHS compliance.
Supply support for ISL26314FVZ-T7A 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
Renesas Electronics Corporation is a global semiconductor leader formed from the merger of Renesas Technology and NEC Electronics, specializing in microcontrollers, analog, and power solutions for industrial, automotive, and infrastructure markets.
The ISL26314FVZ-T7A belongs to Renesas' legacy Intersil precision analog portfolio, designed specifically for high-reliability, low-power multichannel data acquisition in harsh industrial environments.
FAQ
What is the full-scale input range of ISL26314FVZ-T7A in differential mode?
The full-scale input range of ISL26314FVZ-T7A is 2×VREF for differential inputs. With VREF = 5V, the differential input span is ±5V (10Vpp), and the common-mode voltage must be maintained within VREF/2 ±200mV. The device accepts input signals up to VDD, supporting rail-to-rail operation when VREF = VDD.
Does ISL26314FVZ-T7A support single-ended inputs?
No, ISL26314FVZ-T7A is configured exclusively for four differential input channels (AIN0± through AIN3±). Single-ended operation is implemented in other family members like ISL26315FVZ (4-channel SE) and ISL26319FVZ (8-channel SE), but ISL26314FVZ-T7A does not support single-ended mode.
How does the Auto Power-down mode affect conversion timing in ISL26314FVZ-T7A?
In Auto Power-down mode (PD0 = 0), ISL26314FVZ-T7A shuts down all circuitry except the oscillator and digital interface after conversion completion. Recovery requires 150µs after CNV falls low before valid acquisition begins-this delay must be accounted for in timing-critical applications.
What is the recommended decoupling for the VREF pin on ISL26314FVZ-T7A?
The VREF pin of ISL26314FVZ-T7A requires a local 1µF X7R ceramic capacitor (0603, 6.3V) placed as close as possible to the pin. A bulk capacitor (e.g., 10µF tantalum) may be added on the VREF net if sourced from a remote reference IC like ISL21090 or ISL21010.
Can ISL26314FVZ-T7A operate with VREF set to 2.5V while VDD is 3.3V?
Yes, ISL26314FVZ-T7A supports VREF from 2V to VDD. With VDD = 3.3V and VREF = 2.5V, the differential full-scale range becomes ±2.5V (5Vpp), and the common-mode range is 1.25V ±200mV. This configuration is valid and commonly used with low-voltage precision references.
ISL26314FVZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 125k
- Number of Inputs:
- 4
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- MUX-ADC
- Ratio - S/H:ADC:
- -
- 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:
- -
- Qualification:
- -
ISL26314FVZ-T7A FAQ
1.How can I place an order for ISL26314FVZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL26314FVZ-T7A 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 ISL26314FVZ-T7A reliable?
The price and inventory of ISL26314FVZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL26314FVZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL26314FVZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL26314FVZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL26314FVZ-T7A?
ISL26314FVZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL26314FVZ-T7A 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 ISL26314FVZ-T7A?
For technical support, including ISL26314FVZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL26314FVZ-T7A requirements.
6.How does Aetrix verify that ISL26314FVZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL26314FVZ-T7A 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 ISL26314FVZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL26314FVZ-T7A?
All ISL26314FVZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL26314FVZ-T7A, 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 ISL26314FVZ-T7A part is unused and in its original packaging.
Return procedure for ISL26314FVZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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