ISL26315FVZ-T - 12-bit 125kSPS 4-ch SAR ADC | Renesas
Référence : ISL26315FVZ-T ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $4.5 | $4,50 |
| 10 | $4.05 | $40,50 |
| 100 | $3.6 | $360,00 |
| 500 | $3.2 | $1 600,00 |
| 1 000 | $2.85 | $2 850,00 |
ISL26315FVZ-T Présentation
A successive-approximation-register ADC is a precision data converter that performs a binary search against an internal DAC to digitize an analog input in one conversion cycle per bit. SAR ADCs sit within the broader data-converter hierarchy (ADC -> data converter -> mixed-signal IC -> semiconductor), and the ISL26315FVZ-T family (ISL26310–ISL26319) combines this SAR core with a proprietary input multiplexer and integrated buffer amplifier to simplify front-end design while maintaining low-noise linearity.
Key features include a proprietary input multiplexer plus combination buffer amplifier that reduces input drive requirements, SPI/QSPI/MICROWIRE-compatible serial interface, hardware and software reset options, 5 kV Human Body Model ESD survivability, and an Auto Power-Down mode that drops operating current to a typical 8 µA between conversions. The TSSOP-16 footprint also supports easy layout on mixed-signal PCBs.
Architecturally, the device uses a low-power SAR core with internal track-and-hold, an on-chip reference buffer, and a flexible input channel sequencer that lets a single host controller scan multiple single-ended or differential channels. The 8-channel-input family member (ISL26319) shares the same digital interface, allowing firmware reuse across channel counts.
Typical applications include portable industrial data loggers, multi-sensor 4-20 mA loop digitization, battery-powered instrumentation, factory automation sensor front ends, and process-control analog input modules. The wide 2.7-5.25 V supply range makes the part compatible with both 3.3 V and 5 V microcontroller rails.
When designing with this part, place 100 nF decoupling capacitors as close as possible to AVDD and DVDD pins, route the analog and digital grounds as separate planes joined at a single point under the IC, and leave the SHDN pin properly pulled to enable Auto Power-Down for battery savings. If higher channel counts are needed, migrate to the pin-compatible ISL26319 (8 single-ended inputs) rather than cascading multiple parts.
This page synthesizes distributor pricing, drop-in alternatives, and practical PCB/design notes not found in the manufacturer datasheet.
Alternatives de remplacement direct pour ISL26315FVZ-T — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ISL26315FVZ-T (même facteur de forme et même empreinte) — différant par Package, Number of Input Channels, Resolution, Architecture, Input Type.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ISL26313FVZ-T
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ISL26314FVZ-T
✅ Remplacement direct✓ En stock
$3.31 / unité
Voir la fiche technique →ISL26319FVZ-T
✅ Remplacement direct✓ En stock
$4.09 / unité
Voir la fiche technique →ISL26312FVZ-T
✅ Remplacement direct✓ En stock
$1.02 / unité
Voir la fiche technique →ISL26311FBZ
✅ Remplacement direct✓ En stock
$2.3 / unité
Voir la fiche technique →ISL26315FVZ-T Valeurs maximales et caractéristiques électriques
| Résolution | 12 bits |
| Fréquence d'échantillonnage | 125 kSPS |
| Number of Single-Ended Input Channels | 4 |
| Number of Differential Input Channels | 2 |
| Architecture | SAR (Successive Approximation Register) |
| Analog Supply Voltage | 2.7 V to 5.25 V |
| Digital Supply Voltage | 2.7 V to 5.25 V |
| Power Consumption at 125 kSPS | 11 mW |
| Power Consumption between Conversions (Auto Power-Down) | 8 µA (typical) |
| Interface | SPI / QSPI / MICROWIRE compatible |
| Plage de température de fonctionnement | -40 °C to +125 °C |
| ESD Survivability (HBM) | 5 kV |
| Boîtier | TSSOP-16 |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
| Channel Multiplexer | Yes (internal) |
| Auto Power-Down Mode | Yes |
Configuration des broches de ISL26315FVZ-T
| Broche 1 | AIN0 — Analog input channel 0 |
| Broche 2 | AIN1 — Analog input channel 1 |
| Broche 3 | AIN2 — Analog input channel 2 |
| Broche 4 | AIN3 — Analog input channel 3 |
| Broche 5 | REF — Reference voltage input/output |
| Broche 6 | GND — Analog ground |
| Broche 7 | AVDD — Analog supply voltage |
| Broche 8 | DVDD — Digital supply voltage |
| Broche 9 | DGND — Digital ground |
| Broche 10 | CS — Chip select (active low) |
| Broche 11 | SCLK — Serial clock input |
| Broche 12 | DOUT — Serial data output |
| Broche 13 | DIN — Serial data input |
| Broche 14 | CONVST — Conversion start input |
| Broche 15 | SHDN — Shutdown input (active low) |
| Broche 16 | NC — Not connected (per datasheet) |
Applications typiques
ISL26315FVZ-T convient pour 6 applications: Multi-Sensor Industrial Data Logger, Battery-Powered Portable Instrumentation, Process Control Analog Input Module, Factory Automation Sensor Front End, Automotive Sensor Digitization, Medical Patient Monitoring Peripherals.
Multi-Sensor Industrial Data Logger
The ISL26315FVZ-T's 4 single-ended input channels, 125 kSPS throughput, and 2.7-5.25 V supply make it well-suited for portable 4-channel industrial data loggers digitizing thermocouple, pressure, and flow sensors. According to the Renesas datasheet, the proprietary input multiplexer and on-chip buffer amplifier reduce external driver complexity, while Auto Power-Down at 8 µA typical between conversions preserves battery life. Placed between a 3.3 V MCU rail and four analog sensors with 100 nF decoupling on AVDD/DVDD, the part delivers 12-bit resolution at 11 mW active power - a strong fit when 4 sensor channels must be scanned simultaneously at moderate speed without paying for 8-channel upgrade cost.
Recommandé
Battery-Powered Portable Instrumentation
The ISL26315FVZ-T's 11 mW active power and 8 µA Auto Power-Down standby current make it ideal for battery-powered handheld instruments such as multimeters, medical monitors, and field-test gear. According to Renesas datasheet figures, the 2.7 V minimum supply permits operation directly from a single Li-ion cell (3.0-4.2 V), eliminating boost converters that would inject switching noise into the measurement chain. The SPI-compatible interface allows low-pin-count MCUs to read conversion results with minimal firmware overhead, while the -40 °C to +125 °C operating range supports outdoor and industrial field deployment without derating.
Recommandé
Process Control Analog Input Module
The ISL26315FVZ-T's 4 single-ended / 2 differential channels and industrial -40 °C to +125 °C operating range make it a strong fit for PLC analog input modules that digitize 4-20 mA current loops or 0-10 V process signals. According to the Renesas datasheet, the on-chip combination buffer amplifier tolerates typical 1 kΩ source impedances from industrial transducers without external op-amp buffering. The TSSOP-16 footprint supports dense multi-channel PLC designs where PCB area is constrained, and the 5 kV HBM ESD rating helps survive field-install handling on factory floors.
Recommandé
Factory Automation Sensor Front End
The ISL26315FVZ-T's multi-channel SAR architecture and SPI-compatible interface make it suitable for factory automation sensor front ends digitizing proximity, level, and temperature sensors on a single PCB. According to Renesas datasheet performance figures, the 125 kSPS throughput allows simultaneous sampling of multiple sensors at rates sufficient for vibration and rotation monitoring, while the proprietary input multiplexer eliminates external analog switches. The 2.7-5.25 V supply tolerates industrial 24 V bus systems stepped down to 5 V or 3.3 V, and the TSSOP-16 footprint simplifies mixed-signal PCB layout when paired with a digital MCU on the same board.
Recommandé
Automotive Sensor Digitization
While the ISL26315FVZ-T is not AEC-Q100 qualified, its -40 °C to +125 °C operating range and 5 kV HBM ESD rating suit non-safety automotive applications such as body controllers, HVAC sensor readouts, and battery management peripheral monitoring. According to the Renesas datasheet, the 4 single-ended input channels allow four sensors (temperature, humidity, pressure, current) to be scanned by one ADC, reducing BOM cost compared with one-ADC-per-sensor designs. Designers should evaluate the AEC-Q100 status against their target application tier; for safety-critical automotive ADCs, an AEC-Q100-qualified part should be substituted.
Recommandé
Medical Patient Monitoring Peripherals
The ISL26315FVZ-T's low 11 mW active power, 8 µA Auto Power-Down standby, and 12-bit resolution make it a candidate for non-diagnostic medical peripherals such as bedside monitoring accessories, fitness equipment sensor readouts, and rehab device instrumentation. According to the Renesas datasheet, the wide 2.7-5.25 V supply allows operation from USB-powered 5 V rails or battery packs without additional regulation. The SPI-compatible interface simplifies connection to medical-grade MCUs, while the 4 single-ended channels support multi-parameter sensor modules (SpO2, respiration, temperature) on a single compact PCB.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ISL26315FVZ-T — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ISL26313FVZ-T | ISL26314FVZ-T | ISL26319FVZ-T | ISL26312FVZ-T | ISL26311FBZ |
|---|---|---|---|---|---|---|
| Package | TSSOP-16 | TSSOP-16 - same | TSSOP-16 - same | TSSOP-16 - same | TSSOP-16 - same | TSSOP-16 - same |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Resolution | 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 |
| Analog Supply Voltage | 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 / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE |
| Operating Temperature Range | -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 |
Principaux différenciateurs
- 4-channel input with on-chip combination buffer amplifier (vs ISL26312FVZ-T)
- Mid-density channel count in the ISL26310 family (vs ISL26319FVZ-T)
- Lower cost than 8-channel upgrade path (vs ISL26319FVZ-T)
Notes de conception
Place 100 nF X7R ceramic decoupling capacitors as close as possible to the AVDD (pin 7) and DVDD (pin 8) pins, with a short return path to the GND (pin 6) and DGND (pin 9) pads. According to Renesas datasheet guidance, a single 10 µF bulk capacitor on AVDD is recommended for systems with high digital switching noise. The 2.7 V minimum supply allows direct connection to a 3.3 V or 5 V rail; ensure the supply is low-noise (< 5 mV ripple) to preserve 12-bit linearity.
Route analog signals (AIN0-AIN3) on a separate analog layer away from digital switching traces and clock lines. According to the Renesas datasheet, the analog and digital grounds should be joined at a single point under the IC rather than forming a complete loop. The TSSOP-16 package's exposed thermal pad (when present) should be soldered to a copper pour on the analog ground plane to reduce thermal gradients that could affect the reference voltage stability.
Use a 1 kΩ or smaller source impedance at each AIN input to avoid conversion errors, taking advantage of the on-chip combination buffer amplifier. According to Renesas datasheet, the input multiplexer is designed for high-impedance sensor sources; however, adding a small RC filter (100 Ω + 10 nF) at each AIN pin can suppress wideband RF pickup in industrial environments. Keep the REF pin decoupled with 10 µF + 100 nF for stable 12-bit readings across temperature.
Do not leave SHDN floating - tie it to DVDD through a 10 kΩ pull-up so Auto Power-Down operates correctly between conversions. According to the Renesas datasheet, the CONVST signal must be a clean pulse (rise/fall < 20 ns) to start a conversion reliably; long rise times can introduce jitter in the SAR comparator. Do not exceed 5.25 V on AVDD/DVDD; transient spikes above 6 V may damage the part despite the 5 kV HBM ESD rating.
Informations de conformité
RoHS compliant per Renesas product page. Not AEC-Q100 qualified - the ISL26315FVZ-T is industrial-grade; for AEC-Q100 automotive applications, an AEC-Q100-qualified ADC must be substituted. Halogen-free status not explicitly stated in the verified web data.
