ISL26319FVZ-T - 12-bit 125kSPS 8-CH SAR ADC | Renesas
부품 번호: ISL26319FVZ-T ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $6.51 | $6.51 |
| 10 | $5.86 | $58.60 |
| 100 | $5.2 | $520.00 |
| 500 | $4.61 | $2,305.00 |
| 1,000 | $4.09 | $4,090.00 |
ISL26319FVZ-T 개요
SAR ADCs are a class of analog-to-digital converters that resolve one bit per clock cycle through a switched-capacitor binary-weighted DAC. They are prized for deterministic latency, no pipeline delay, excellent DC linearity, and low power consumption at modest sample rates, making them a standard choice for industrial process control, instrumentation, data-acquisition front-ends, and multi-channel sensor readouts. Within the converter hierarchy, the ISL26319FVZ-T sits at the precision-low-power-mid-speed tier (12-bit, 125 kSPS), above micro-power 8/10-bit SARs and below 16/18/24-bit precision SARs or sigma-delta converters.
Key features include 8 single-ended input channels (or 4 differential), an SPI-compatible serial interface for configuration and data read-back, integrated input buffer with high impedance, an internal 4.096 V or external reference option, and an auto power-down mode that drops quiescent current to microampere levels between conversions. The wide supply range allows direct connection to 3.3 V or 5 V rails commonly found in industrial and battery-backed systems.
Typical applications include multi-channel data-acquisition modules, process-control sensor reading (temperature, pressure, strain-gauge bridges with external signal conditioning), battery monitoring in 12-24 V systems, PLC analog input cards, and portable instrumentation where low average power is mandatory.
Designers should provide a clean analog ground plane, decouple AVDD with a low-ESR 1 uF/100 nF pair, and observe the 50 ns minimum CS setup time. Auto power-down timing must be honored to achieve the 8 uA typical standby figure. This page consolidates distributor pricing, drop-in alternatives, and design notes not found in the manufacturer datasheet.
드롭인 대체품: ISL26319FVZ-T — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: ISL26319FVZ-T (동일 폼 팩터 및 풋프린트) — 차이점: Interface, Number of Input Channels, Package, Resolution, Architecture.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
ISL26315FVZ-T7A
✅ 드롭인✓ 재고 있음
$2.52 / 개
데이터시트 보기 →ISL26312FVZ-T
✅ 드롭인✓ 재고 있음
$1.02 / 개
데이터시트 보기 →ISL26319FVZ-T 최대 정격 & 전기적 특성
| 분해능 | 12 bit |
| Sample Rate (max) | 125 kSPS |
| Number of Input Channels | 8 single-ended / 4 differential |
| Architecture | SAR (Successive Approximation) |
| Input Type | Single-ended and differential |
| 공급 전압 | 2.7 V to 5.25 V (single supply) |
| Supply Current (active) | 3 mA typical |
| Power Dissipation (125 kSPS) | 11 mW typical |
| Power-Down Current | 8 uA typical (auto power-down between conversions) |
| Analog Input Range | 0 V to 5.25 V |
| 인터페이스 | SPI-compatible serial |
| Reference | Internal or external |
| 패키지 | 16-TSSOP (FVZ) |
| 동작 온도 | -40C to +125C |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant |
ISL26319FVZ-T 핀 구성
| 핀 1 | AIN1 — Analog input channel 1 (single-ended) / AIN1+ (differential) |
| 핀 2 | AIN2 — Analog input channel 2 (single-ended) / AIN2+ (differential) |
| 핀 3 | AIN3 — Analog input channel 3 (single-ended) / AIN1- (differential) |
| 핀 4 | AIN4 — Analog input channel 4 (single-ended) / AIN3+ (differential) |
| 핀 5 | AGND — Analog ground |
| 핀 6 | REF — Voltage reference input/output (internal/external) |
| 핀 7 | AVDD — Analog supply voltage (2.7 V to 5.25 V) |
| 핀 8 | CS — Chip select (active low) for SPI |
| 핀 9 | SCLK — Serial clock input for SPI |
| 핀 10 | DOUT — Serial data output (SPI) |
| 핀 11 | DIN — Serial data input (SPI) for configuration |
| 핀 12 | AIN5 — Analog input channel 5 (single-ended) / AIN2- (differential) |
| 핀 13 | AIN6 — Analog input channel 6 (single-ended) / AIN4+ (differential) |
| 핀 14 | AIN7 — Analog input channel 7 (single-ended) / AIN3- (differential) |
| 핀 15 | AIN8 — Analog input channel 8 (single-ended) / AIN4- (differential) |
| 핀 16 | DGND — Digital ground |
일반적인 애플리케이션
ISL26319FVZ-T 적합 용도: 6 애플리케이션s: Multi-Channel Data Acquisition Module, Industrial Process Control Inputs, Battery-Operated Sensor Logging, Portable Test and Measurement, Automotive Sensor Cluster Digitization, Medical Monitoring Front-End.
Multi-Channel Data Acquisition Module
The ISL26319FVZ-T's 8 single-ended inputs serve as the analog front end of a single-board data-acquisition module that scans thermocouples, RTDs, or 0-5 V process signals into an SPI-controlled MCU or FPGA. The proprietary input multiplexer and combination buffer reduce external signal-conditioning requirements, so each channel needs only a series input resistor and ESD diode to AVDD. With 125 kSPS aggregate throughput, the part captures all 8 channels sequentially faster than 10 us, meeting the scan rate of typical industrial PLC analog input cards while keeping total dissipation at 11 mW - far below discrete ADC alternatives.
추천
Industrial Process Control Inputs
PLC analog input cards and distributed I/O nodes use the ISL26319FVZ-T to digitize 4-20 mA current-loop-derived voltages, strain-gauge bridge outputs, and pressure-transducer signals in 24 V industrial environments. The 5.25 V tolerant inputs accept direct connection from current-sense resistors, eliminating external op-amp buffers. SPI compatibility speeds FPGA or MCU polling, while the -40C to +125C operating range handles cabinet-temperature extremes. Auto power-down between scans keeps loop-powered 4-20 mA field nodes within their 3.5 mA budget.
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Battery-Operated Sensor Logging
Wireless sensor loggers for environmental monitoring, cold-chain shipping, and remote asset tracking use the ISL26319FVZ-T to digitize up to 8 sensors at duty cycles below 1 percent. The 8 uA typical power-down current between conversions, combined with 11 mW active power at 125 kSPS, keeps average consumption under 200 uA from a single 3.3 V supply. A 2400 mAh primary LiSOCl2 cell can sustain multi-year loggers, while the small TSSOP-16 footprint fits miniature PCBAs for vibration-tolerant deployments.
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Portable Test and Measurement
Handheld multimeters, oscilloscope probe front-ends, and field-service instrumentation rely on the ISL26319FVZ-T for snapshot multi-channel acquisitions where deterministic SAR latency and high impedance are valued. The 12-bit resolution and 125 kSPS sample rate suit voltage, current, and temperature readings derived from shunt or sensor bridges. SPI bus multiplexing simplifies pairing with an ARM Cortex-M0 host. Rugged industrial -40C to +125C operation supports outdoor and shop-floor use without thermally-induced calibration drift.
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Automotive Sensor Cluster Digitization
Body controllers and HVAC modules use the ISL26319FVZ-T to digitize multiple cabin temperature sensors, potentiometer-based mode knobs, and battery monitoring shunts in 12 V and 24 V vehicle systems. The wide 2.7-5.25 V analog input range, derived from the 5 V internal rail, accommodates 0-5 V sensors directly. The -T13 reel variant operates over the full -40C to +125C under-hood thermal envelope. Engineers should confirm AEC-Q100 qualification with Renesas for safety-critical powertrain applications; this part suits body-electronic applications.
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Medical Monitoring Front-End
Patient-monitoring peripherals (multi-parameter patches, spirometers, infusion pump pressure sensors) use the ISL26319FVZ-T to digitize low-frequency analog channels at low duty cycles where average power is critical. The 12-bit resolution suits clinical-grade accuracy targets when paired with proper signal conditioning. Auto power-down between conversions keeps continuous-monitoring wearable current budget low, while SPI enables digital isolation barriers for IEC 60601-1 patient-leakage compliance. Designers must verify IEC 60601-1 system-level qualification separately.
추천
추천 제품 요약
엔지니어링 참조 데이터: ISL26319FVZ-T — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | ISL26315FVZ-T7A | ISL26312FVZ-T | ISL26311FBZ |
|---|---|---|---|---|
| Package | 16-TSSOP (FVZ) | 16-TSSOP (FVZ) - same | 16-TSSOP (FVZ) - same | 8-SOIC (FBZ) - different footprint |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit |
| Sample Rate (max) | 125 kSPS | 125 kSPS | 125 kSPS | 125 kSPS |
| Input Channels (single-ended) | 8 | 5 | 2 | 8 |
| Interface | SPI | SPI | SPI | SPI |
| 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 |
| Pin-to-Pin Compatible | Yes (reference design) | Yes (same TSSOP-16 pinout) | Yes (same TSSOP-16 pinout) | No (SOIC-8 footprint) |
주요 차별점
- Highest channel count in the Renesas ISL2631x family (vs ISL26315FVZ-T7A)
- True-differential input stage (vs ISL26312FVZ-T)
- Industrial -40C to +125C temperature range (vs ISL26311FBZ)
설계 노트
The ISL26319FVZ-T achieves its 8 uA typical between-conversion current only when the auto power-down mode is enabled via SPI configuration. Decouple AVDD with a 1 uF X7R ceramic capacitor in parallel with a 100 nF NP0 cap placed within 2 mm of the AVDD pin to suppress digital switching transients from corrupting conversion accuracy. Estimated: at 100 percent duty cycle (continuous 125 kSPS conversion), total supply current is approximately 3 mA from 5 V AVDD.
Place the AGND pin bond directly to an analog ground island separated from digital ground by a single-point stitching under or near the IC. Route analog input traces as differential pairs (when used differentially) with characteristic impedance of 50 ohm over an unbroken analog ground plane. Star-route AGND and DGND at the package pad to avoid ground-loop currents that appear as ADC noise. NCD pins should be treated as analog signals, never as digital I/O.
Do not connect analog inputs directly to voltages above AVDD + 0.3 V or below AGND - 0.3 V without external clamping; the input multiplexer is not fault-tolerant. Ensure CS is held low for the entire 16 SCLK cycles; releasing CS mid-frame aborts the conversion. When using the internal reference, bypass the REF pin with a 100 nF NP0 ceramic capacitor to AGND. Estimated: with external reference, conversion noise improves by approximately 0.3 LSB versus internal reference at 25 C.
규정 준수 정보
RoHS compliant per Renesas product page. Standard industrial grade; -T13 reel variant available for higher-volume assembly. AEC-Q100 status should be confirmed with Renesas for safety-critical automotive use.
