ISL26315FVZ - 12-bit 125kSPS 4-CH SAR ADC | Renesas / Intersil
Teilenummer: ISL26315FVZ ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $6.42 | $6,42 |
| 10 | $5.85 | $58,50 |
| 100 | $5.1 | $510,00 |
| 500 | $4.4 | $2.200,00 |
| 1.000 | $3.85 | $3.850,00 |
ISL26315FVZ Übersicht
An ADC (Analog-to-Digital Converter) is an integrated circuit that samples a continuous analog voltage and converts it into a discrete digital code. SAR ADCs use a binary-search successive-approximation algorithm with an internal sample-and-hold and DAC; they deliver deterministic latency, low latency per conversion, and excellent DC linearity with no pipeline delay. The ISL26315 belongs to the broader product hierarchy of data converter -> ADC -> SAR ADC -> precision mixed-signal IC, sitting under the data acquisition category that includes successive-approximation, sigma-delta, and pipeline architectures.
Key specifications of the ISL26315FVZ include 12-bit resolution, 125 kSPS maximum sampling rate, 4 single-ended input channels (selectable through an input multiplexer), integrated input buffer amplifier that lowers the input drive requirements, and up to 5 kV Human Body Model ESD survivability on the analog inputs. The converter is specified for the industrial temperature range of -40 °C to +125 °C and is offered in the TSSOP-16 surface-mount package.
The internal architecture combines a proprietary input multiplexer, a unity-gain input buffer that reduces the source-impedance burden on external driving circuitry, a high-accuracy comparator, an internal DAC, and a successive-approximation register. This topology achieves excellent linearity over supply and temperature variations and produces accurate conversions without requiring external signal conditioning in most low-frequency applications.
Typical applications for the ISL26315FVZ include industrial process control and instrumentation, multi-channel sensor monitoring (thermocouple, RTD, bridge, and 4-20 mA loop read-back via an external shunt), battery management system cell voltage and current monitoring, factory automation analog front ends, programmable logic controller (PLC) analog input modules, and general-purpose data-acquisition boards requiring up to four simultaneously-sampled-or-multiplexed single-ended channels.
When designing with the ISL26315FVZ, place a 0.1 µF decoupling capacitor as close as possible to each supply pin (AVCC and DVDD) and provide a low-impedance ground return; add a small RC anti-alias filter at each analog input to attenuate out-of-band noise above the Nyquist frequency (≈62.5 kHz at 125 kSPS).
This page synthesizes distributor pricing from Mouser, DigiKey, LCSC and Octopart, pin-compatible drop-in alternatives from the ISL2631x family and competing SAR ADCs, and practical design notes that complement - but do not replace - the manufacturer datasheet.
Drop-in-Alternativen für ISL26315FVZ – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ISL26315FVZ (gleiche Bauform und Footprint) – abweichend in Package, Input Type, Number of Input Channels, Digital Supply Voltage (DVDD), Interface.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ISL26314FVZ
✅ Drop-In✓ Auf Lager
$3.55 / Stück
Datenblatt ansehen →ISL26310FVZ
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ISL26311FVZ
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ISL26312FVZ-T
✅ Drop-In✓ Auf Lager
$1.02 / Stück
Datenblatt ansehen →ISL26315FVZ-T7A
✅ Drop-In✓ Auf Lager
$2.52 / Stück
Datenblatt ansehen →ISL26315FVZ-T7
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ISL26311FBZ
✅ Drop-In✓ Auf Lager
$2.3 / Stück
Datenblatt ansehen →ISL26315FVZ Grenzwerte & elektrische Eigenschaften
| Auflösung | 12 bits |
| Abtastrate | 125 kSPS |
| Number of Input Channels | 4 single-ended |
| Architecture | SAR (Successive Approximation Register) |
| Input Type | Single-ended (this variant) |
| Analog Supply Voltage (AVCC) | 2.7 V to 5.25 V |
| Digital Supply Voltage (DVDD) | 2.7 V to 5.25 V |
| Schnittstelle | SPI-compatible serial |
| Input ESD Rating (HBM) | up to 5 kV |
| Betriebstemperaturbereich | -40 °C to +125 °C (industrial) |
| Gehäuse | TSSOP-16 |
| Montageart | Surface Mount |
| Lead-Free / RoHS | Lead-Free / RoHS Compliant (per Renesas product page) |
ISL26315FVZ Pin-Konfiguration
| Pin 1 | AIN0 — Analog input channel 0 (single-ended) |
| Pin 2 | AIN1 — Analog input channel 1 (single-ended) |
| Pin 3 | AIN2 — Analog input channel 2 (single-ended) |
| Pin 4 | AIN3 — Analog input channel 3 (single-ended) |
| Pin 5 | AVCC — Analog supply voltage (2.7 V to 5.25 V) |
| Pin 6 | REF — Voltage reference input / GND-sense (per datasheet) |
| Pin 7 | GND — Ground |
| Pin 8 | DVDD — Digital supply voltage (2.7 V to 5.25 V) |
| Pin 9 | CS — Chip select (active low) for SPI interface |
| Pin 10 | SCLK — SPI serial clock |
| Pin 11 | DOUT — SPI serial data output (SDO) |
| Pin 12 | DIN — SPI serial data input (SDI) |
| Pin 13 | CONVST — Conversion start input |
| Pin 14 | MUX/SHARE — Channel-multiplexer select / sharing control (per datasheet) |
| Pin 15 | GND — Ground (additional ground pin) |
| Pin 16 | NC — Not connected (per datasheet) |
Typische Anwendungen
ISL26315FVZ ist geeignet für 6 Anwendungs: Industrial Process Control Analog Input, PLC Analog Input Module (4-Channel), Multi-Cell Battery Monitoring (BMS), Portable Test & Measurement Instrument Front-End, Multi-Sensor IoT Edge Node, Factory Automation Sensor Hub.
Industrial Process Control Analog Input
The ISL26315FVZ's 4 single-ended input channels, 12-bit resolution at 125 kSPS, and -40C to +125C industrial temperature range make it a strong fit for multi-loop process-control analog input modules reading 4-20 mA current loops, RTD bridges, or thermocouple amplifiers. Place each analog input behind a low-pass RC anti-alias filter (cutoff ~30 kHz, well below the 62.5 kHz Nyquist at full speed) and tie AVCC/DVDD together to a common 3.3 V or 5 V rail with 0.1 uF ceramic decoupling at each pin. Compared with discrete single-channel ADCs, the integrated input multiplexer and buffer amplifier cut BOM count and source-impedance drive requirements - an important advantage when scanning up to 4 sensor channels per IC.
Empfohlen
PLC Analog Input Module (4-Channel)
Programmable Logic Controllers typically accept 4 or 8 analog inputs per module, and the ISL26315FVZ provides exactly 4 single-ended channels in one TSSOP-16 package, matching the 4-channel PLC analog-input card form factor. The SPI-compatible serial interface connects directly to a 3.3 V MCU or FPGA without level shifters, and the 125 kSPS aggregate rate comfortably oversamples even fast process variables (pressure, flow, level) at the typical 100 Hz-per-channel PLC scan rate. Compared with discrete ADCs the ISL26315FVZ's integrated input buffer reduces the external op-amp drive requirement, lowering BOM cost and PCB area on each PLC input card.
Empfohlen
Multi-Cell Battery Monitoring (BMS)
Battery-management systems for 12 V to 48 V stacks often monitor 4 cells (or 4 parallel cell groups) with a single 12-bit ADC, and the ISL26315FVZ's 4 single-ended channels map directly onto this topology. The 2.7 V to 5.25 V supply range covers the cell-sense rail after a high-side or low-side divider, while 5 kV HBM ESD on the analog inputs tolerates the transients seen on automotive and industrial battery harnesses. The integrated input buffer reduces the burden on external cell-balancing resistor networks; sequencing the conversions through the SPI interface lets the host MCU average out cell noise over each ADC scan cycle.
Empfohlen
Portable Test & Measurement Instrument Front-End
Handheld multimeters, oscilloscope front-end cards, and portable data loggers benefit from the ISL26315FVZ's combination of 12-bit resolution, 125 kSPS burst rate, and 4 single-ended channels in a small TSSOP-16 package. Designers can scale one ADC across four test points (voltage, current, temperature, auxiliary) while keeping the board small enough for portable enclosures. Compared with lower-channel-count ADCs, the 4-channel multiplexer and integrated input buffer save PCB real estate; compared with higher-speed pipeline ADCs, the SAR architecture avoids pipeline latency and gives deterministic per-sample timing - critical when the host MCU triggers conversions synchronously with measurement events.
Empfohlen
Multi-Sensor IoT Edge Node
IoT edge nodes typically aggregate 2-4 sensor channels (temperature, humidity, light, gas) and report through a wireless link; the ISL26315FVZ reads up to 4 single-ended channels at 125 kSPS aggregate, more than enough for low-bandwidth sensors, in a TSSOP-16 package small enough for coin-cell or battery-powered enclosures. The 2.7 V to 5.25 V supply range accommodates single-cell Li-ion, 3.3 V coin-cell boost outputs, and 5 V USB rails; the SPI interface talks directly to common IoT MCUs without glue logic. Compared with discrete ADCs the integrated input multiplexer and buffer reduce external component count, extending battery life and shrinking the BOM for high-volume edge-node production.
Empfohlen
Factory Automation Sensor Hub
Factory automation hubs aggregate analog sensors (proximity, level, pressure, vibration) at a panel or sub-station, and the ISL26315FVZ's 4 single-ended channels, SPI interface, and industrial temperature rating are well matched to this role. The TSSOP-16 package is footprint-compatible across the ISL2631x family, letting a single PCB design serve 1-, 2-, 4-, or 8-channel hubs by population option - an important inventory and SKU-rationalization benefit for high-mix industrial OEMs. Compared with pipeline ADCs, the SAR architecture gives deterministic conversion latency that simplifies synchronous sampling across multiple hubs on the same SPI bus.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ISL26315FVZ – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ISL26314FVZ | ISL26310FVZ | ISL26311FVZ | ISL26312FVZ-T | ISL26315FVZ-T7A | ISL26315FVZ-T7 | ISL26311FBZ |
|---|---|---|---|---|---|---|---|---|
| Brand | Renesas Electronics (Intersil) | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | TSSOP-16 | TSSOP-16 - same | TSSOP-16 - same | TSSOP-16 - same | TSSOP-16 - same | TSSOP-16 - same | TSSOP-16 - same | SOIC-16 - wider footprint |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits |
| Sampling Rate | 125 kSPS | 125 kSPS | 125 kSPS | 125 kSPS | 125 kSPS | 125 kSPS | 125 kSPS | 125 kSPS |
| Number of Channels (single-ended) | 4 | 2 | 1 | 2 | 4 (hybrid SE+diff) | 4 | 4 | 2 |
| Analog Supply | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V |
| Interface | SPI | SPI | SPI | SPI | SPI | SPI | SPI | SPI |
| Operating Temperature | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C |
Wichtigste Unterscheidungsmerkmale
- 4 single-ended channels with integrated input multiplexer and buffer in one TSSOP-16 IC (vs. ADS7822PBG4 (1-channel 12-bit SAR ADC, single-channel only))
- Industrial -40C to +125C operating range with 5 kV HBM ESD on analog inputs (vs. ISL26313FVZ (8-channel variant in same family))
- 125 kSPS burst sampling rate at 12 bits across 4 channels (vs. ISL26314FVZ (2-channel variant))
- Pin-compatible across the ISL2631x family for SKU rationalization (vs. ISL26311FBZ (SOIC-16, wider footprint variant))
Designhinweise
Place a 0.1 uF ceramic decoupling capacitor as close as possible to each of the AVCC and DVDD pins, and add a bulk 1 uF to 10 uF capacitor on each supply rail near the IC. Per the ISL2631x family datasheet, AVCC and DVDD may be tied together from a common 3.3 V or 5 V rail when the analog and digital grounds are joined at a single point; separate analog and digital grounds with a single star-ground connection reduce digital switching noise coupling into the analog inputs.
Add a small RC anti-alias filter on each analog input: a series resistor of 100 ohm to 1 kohm plus a capacitor to ground chosen for a cutoff around 30 kHz (well below the 62.5 kHz Nyquist at 125 kSPS full rate). Keep the filter capacitor return path short and direct to the IC's GND pin. For low-impedance sources the integrated input buffer amplifier reduces the burden of driving the filter; for high-impedance sources (e.g., thermocouples) increase the series resistor modestly and use a FET-input preamplifier upstream.
Route the SPI signals (CS, SCLK, DIN, DOUT, CONVST) as short, impedance-controlled traces and keep them physically separated from the analog input traces to avoid digital-to-analog crosstalk. Place the TSSOP-16 device with the analog pins (1-7) on one side of the board away from switching DC-DC converters and digital buses. Use a contiguous ground pour under the IC and stitch vias around the analog input traces to provide a low-impedance return path.
Do not exceed 5.25 V on AVCC or DVDD; the datasheet's absolute maximum supply rating is 6 V but sustained operation above 5.25 V is not guaranteed. Ensure the SPI clock frequency does not exceed the datasheet maximum (verify SCLK f_max in the datasheet timing table) - driving the SPI bus faster than rated causes corrupted conversions and lock-ups. Do not leave CONVST floating; tie it to DVDD through a resistor if unused, or drive it actively with the host MCU.
Compliance-Informationen
RoHS and lead-free status per Renesas product page. AEC-Q100 not specifically claimed for the ISL26315FVZ industrial-grade variant; for automotive-grade equivalents consult Renesas directly. Halogen-free status not explicitly stated on the product page - set to unknown per Data Authenticity Rule.
