ISL26324FVZ-T - 12-bit 250kSPS 4-ch SAR ADC | Renesas
부품 번호: ISL26324FVZ-T ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $6.42 | $6.42 |
| 10 | $5.84 | $58.40 |
| 100 | $5.21 | $521.00 |
| 500 | $4.69 | $2,345.00 |
| 1,000 | $4.18 | $4,180.00 |
ISL26324FVZ-T 개요
An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples a continuous analog voltage and quantizes it into a discrete binary code. Within the converter taxonomy, SAR ADCs use a binary-search successive-approximation algorithm with an internal sample-and-hold and a precision DAC, providing deterministic latency, low power, and high accuracy at moderate sampling rates (typically up to ~1 MSPS). SAR ADCs are widely used as the precision A/D building block inside data-acquisition systems, motor control loops, instrumentation front-ends, and sensor signal chains where DC accuracy and repeatable sampling latency matter more than raw speed.
Key features of the ISL26324FVZ-T include a high-impedance analog input multiplexer with proprietary input buffer that relaxes external driver requirements, an SPI-compatible serial digital interface for easy connection to microcontrollers and FPGAs, an auto power-down mode that reduces operating current to 8 µA typical between conversions, and excellent linearity (THD -82 dBFS) over the full supply and temperature range.
The internal architecture combines an input multiplexer, a track-and-hold buffer, the SAR conversion core, and a precision reference input. The serial interface uses simple SCLK, SDOUT and CS lines, supporting read-out rates up to the maximum conversion rate without requiring an external clock. Channel selection and configuration are programmed through the SPI interface.
Typical applications include industrial process control, multi-channel sensor monitoring, portable instrumentation, factory automation, and medical patient monitoring. The wide supply range (2.7 V to 5.25 V) makes the part equally at home in 3.3 V microcontroller systems and 5 V industrial backplanes.
A key design consideration is the bypass network on AVDD and DVDD: place 10 µF tantalum and 0.1 µF ceramic capacitors within a few millimeters of each supply pin to keep switching transients out of the conversion result. Reference decoupling is also critical, particularly when an external reference is used.
This page synthesizes verified distributor pricing, drop-in alternative MPNs from the same ISL2632x family and competitive SAR ADCs, and practical design notes - information gain that is not assembled on the Renesas product page alone.
드롭인 대체품: ISL26324FVZ-T — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: ISL26324FVZ-T (동일 폼 팩터 및 풋프린트) — 차이점: Package, Input Type, Auto Power-Down Current, Family, Interface.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
ISL26324FVZ-T7A
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ISL26325FVZ-T
✅ 드롭인✓ 재고 있음
$2.55 / 개
데이터시트 보기 →ISL26323FVZ-T
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ISL26322FVZ-T
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ISL26329FVZ-T
✅ 드롭인✓ 재고 있음
$3.49 / 개
데이터시트 보기 →ISL26321FVZ-T
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ISL26324FVZ-T 최대 정격 & 전기적 특성
| 분해능 | 12 bit |
| 샘플링 속도 | 250 kSPS |
| Architecture | SAR (Successive Approximation Register) |
| Number of Channels | 4 single-ended / 2 differential |
| Input Type | Single-Ended and Differential |
| Analog Supply Voltage | 2.7 V to 5.25 V |
| Digital Interface | SPI-compatible serial |
| Power Consumption at 250 kSPS | 15 mW typical |
| Auto Power-Down Current | 8 µA typical (between conversions) |
| SINAD / THD | THD -82 dBFS |
| 동작 온도 범위 | -40 °C to +125 °C (automotive grade per datasheet naming) |
| 패키지 | 16-pin TSSOP |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant |
| Lead-Free | Yes |
ISL26324FVZ-T 핀 구성
| 핀 1 | AVDD — Analog supply voltage (2.7 V to 5.25 V) |
| 핀 2 | IN0 — Analog input channel 0 |
| 핀 3 | IN1 — Analog input channel 1 |
| 핀 4 | IN2 — Analog input channel 2 |
| 핀 5 | IN3 — Analog input channel 3 |
| 핀 6 | AGND — Analog ground |
| 핀 7 | REF+ — Positive reference input |
| 핀 8 | REF- — Negative reference input (typically tied to AGND) |
| 핀 9 | CS — Chip select (active low, SPI) |
| 핀 10 | SCLK — Serial clock input (SPI) |
| 핀 11 | SDOUT — Serial data output (SPI) |
| 핀 12 | DGND — Digital ground |
| 핀 13 | DVDD — Digital supply voltage |
| 핀 14 | NC — Not connected (per datasheet) |
| 핀 15 | NC — Not connected (per datasheet) |
| 핀 16 | NC — Not connected (per datasheet) |
일반적인 애플리케이션
ISL26324FVZ-T 적합 용도: 6 애플리케이션s: Industrial Process Control / Multi-Channel Sensor Monitoring, Portable Battery-Powered Instrumentation, Medical Patient Monitoring Equipment, Factory Automation & PLC Analog Modules, Energy Harvesting / Wireless Sensor Nodes, Motor Control Position / Current Sensing.
Industrial Process Control / Multi-Channel Sensor Monitoring
The ISL26324FVZ-T's 4 single-ended / 2 differential inputs, 12-bit resolution, and 250 kSPS throughput make it ideal for industrial PLC analog input modules and multi-channel sensor monitoring backplanes. Its wide 2.7-5.25 V supply tolerates 24 V industrial rails post-regulation. A 4-20 mA current loop or thermocouple, conditioned by a front-end op-amp, drives the MUX inputs sequentially, while the SPI interface streams conversion data to a host microcontroller. Compared with discrete ADCs, the ISL26324FVZ-T's 15 mW power budget keeps heat low in sealed IP67 enclosures, and the auto power-down to 8 µA between conversions lets the host poll the sensor cluster without overheating the module.
추천
Portable Battery-Powered Instrumentation
With 15 mW power consumption at 250 kSPS and 8 µA quiescent current in auto power-down, the ISL26324FVZ-T is well-suited to portable battery-powered instruments such as handheld multimeters, field data loggers, and portable gas detectors. The integrated input buffer reduces the op-amp drive requirements, lowering the BOM cost in compact handheld designs where board space is critical. Operating from a single Li-ion cell (3.0 V to 4.2 V) or two AA cells, the device delivers 12-bit precision on temperature, voltage, and current sensor inputs. SPI control lets the host microcontroller duty-cycle the ADC, only converting when a measurement is needed.
추천
Medical Patient Monitoring Equipment
The ISL26324FVZ-T's 12-bit resolution and 250 kSPS are well-matched to medical patient-monitoring front-ends that digitize ECG, SpO2, temperature, and respiration channels. The 4 single-ended inputs allow simultaneous digitization of multiple patient parameters through a single ADC, reducing board space and BOM cost in compact bedside monitors. The proprietary input buffer simplifies the front-end anti-alias filter design, while the SPI interface streams data to a medical-grade microcontroller. The 2.7-5.25 V supply range permits direct operation from battery packs or regulated 3.3 V rails. For higher channel count, the pin-compatible ISL26329FVZ-T provides 8 single-ended channels in the same 16-pin TSSOP.
추천
Factory Automation & PLC Analog Modules
PLC analog input modules and factory-automation controllers require multi-channel ADCs that can digitize 4-20 mA loop signals, 0-10 V analog outputs, and thermistor/thermocouple inputs. The ISL26324FVZ-T's 4 single-ended / 2 differential input channels directly interface with these standardized industrial sensor outputs through signal conditioning, while the SPI interface integrates with the PLC's central processor. The 250 kSPS throughput enables sub-millisecond loop response time, critical for closed-loop process control. The wide 2.7-5.25 V supply tolerance handles 24 V industrial rails post-regulation. Compared with discrete ADC designs, the ISL26324FVZ-T reduces PCB area by integrating the input MUX and input buffer on-chip.
추천
Energy Harvesting / Wireless Sensor Nodes
Energy-harvesting wireless sensor nodes depend on ultra-low-power ADCs to maximize battery life. The ISL26324FVZ-T's 8 µA auto power-down current between conversions and 15 mW active power at 250 kSPS make it a strong fit for solar/vibration-powered sensor nodes that periodically digitize temperature, humidity, or strain-gauge data and transmit via radio. The integrated input buffer reduces the drive requirements on low-power sensor front-ends, while the SPI interface streams data to a wireless MCU such as a Renesas RL78 or RX. The 4 single-ended inputs allow multi-parameter sensing on a single ADC, reducing BOM and standby power.
추천
Motor Control Position / Current Sensing
Brushless DC and stepper motor controllers require simultaneous sampling of phase current, DC-bus voltage, and position feedback signals at high update rates. The ISL26324FVZ-T's 250 kSPS throughput and 4 single-ended / 2 differential inputs are well-suited to digitize two phase currents differentially plus the DC-bus voltage and a temperature sensor through four channels. The SPI interface streams conversion data to the motor-control MCU with deterministic latency, enabling precise FOC commutation. The wide 2.7-5.25 V supply tolerates motor-bus transients post-regulation. Compared with delta-sigma ADCs, the SAR architecture provides no-latency conversion, ideal for current-loop control.
추천
추천 제품 요약
엔지니어링 참조 데이터: ISL26324FVZ-T — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | ISL26324FVZ-T7A | ISL26325FVZ-T | ISL26323FVZ-T | ISL26322FVZ-T | ISL26329FVZ-T |
|---|---|---|---|---|---|---|
| Package | 16-pin TSSOP | 16-pin TSSOP (same) | 16-pin TSSOP (same) | 16-pin TSSOP (same) | 16-pin TSSOP (same) | 16-pin TSSOP (same) |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| Sampling Rate | 250 kSPS | 250 kSPS | 250 kSPS | 250 kSPS | 250 kSPS | 250 kSPS |
| Number of Channels | 4 SE / 2 Diff | 4 SE / 2 Diff (same) | 8 SE / 4 Diff (+4 ch) | 2 SE / 1 Diff (-2 ch) | 1 SE / 0 Diff (-3 ch) | 8 SE / 4 Diff (+4 ch) |
| 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 |
| Digital Interface | SPI | SPI | SPI | SPI | SPI | SPI |
주요 차별점
- Highest channel-count option in same TSSOP-16 footprint (vs ISL26322FVZ-T (1-channel))
- Lower channel count and BOM cost than higher-density variant (vs ISL26325FVZ-T (8-channel))
- Same die, larger reel format for production volume (vs ISL26324FVZ-T7A)
설계 노트
Decouple AVDD and DVDD with a 10 µF tantalum capacitor in parallel with a 0.1 µF ceramic capacitor placed within a few millimeters of each supply pin. The reference input (REF+ to REF-) must be bypassed with a similar 10 µF + 0.1 µF network to prevent reference-noise coupling into conversion results. The ISL26324FVZ-T draws 15 mW active and only 8 µA in auto power-down, so an LDO with low quiescent current is preferable to a switching regulator on the analog rail.
Keep the analog input traces short and routed away from digital switching lines (SCLK, CS, SDOUT) to minimize digital-coupling noise. Use a single-point ground star with the AGND pin returned directly to the system analog ground, and the DGND pin returned to the digital ground. The exposed pad of the TSSOP (where present) should be soldered to the analog ground copper pour for thermal dissipation.
Do not drive the analog inputs beyond AVDD + 0.3 V or below AGND - 0.3 V - the input protection diodes will conduct and inject current into the analog supply. Always enter auto power-down mode between conversions on battery-powered designs to achieve the 8 µA quiescent current; leaving the device in continuous-conversion mode wastes 15 mW continuously. The SPI SCLK frequency must not exceed the maximum rated value (refer to datasheet timing table) or SDOUT data will be corrupted.
The proprietary input multiplexer/buffer combination reduces the drive requirement on the front-end op-amp. Most modern low-noise op-amps (e.g. ISL28207, OPA2227) can drive the analog input directly without an additional buffer stage. For multi-MHz source-impedance sensors, place a 10 pF to 100 pF capacitor at each input pin to limit the input-bandwidth and prevent kickback-induced settling errors during channel switching.
규정 준수 정보
RoHS compliant per Renesas product page. The -FVZ suffix indicates 16-pin TSSOP automotive-grade temperature range (-40 to +125 °C). Not AEC-Q100 qualified - confirm with manufacturer for automotive safety-critical applications.