ISL26310FBZ-T - 12-bit 125kSPS SAR ADC Single-Channel | Renesas
부품 번호: ISL26310FBZ-T ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $4.52 | $4.52 |
| 10 | $4.07 | $40.70 |
| 100 | $3.61 | $361.00 |
| 500 | $3.24 | $1,620.00 |
| 1,000 | $2.88 | $2,880.00 |
ISL26310FBZ-T 개요
A SAR ADC is a type of analog-to-digital converter that performs a binary search through an internal capacitive DAC to digitize an analog input, completing a conversion in a fixed number of clock cycles. Within the data-acquisition hierarchy, the ISL26310FBZ-T sits between general-purpose 8-/10-bit ADCs and higher-resolution 14-/16-/24-bit delta-sigma converters, offering a balanced trade-off of speed, resolution, and power. Renesas's proprietary input multiplexer and input buffer amplifier reduce external drive requirements, simplifying front-end design.
Key features include 12-bit resolution with no missing codes, a 125 kSPS maximum sampling rate, an internal 2.5 V reference, and integrated input buffer that reduces kickback and drive demands. The single-channel differential input accepts bipolar input ranges when properly biased, and the SPI-compatible serial interface supports daisy-chaining of multiple converters to minimize MCU pin count.
Architecture highlights include a low-noise charge-redistribution SAR core, an automatic input multiplexer, and an on-chip oscillator. The 8-pin SOIC package has a thermal resistance of approximately 110 C/W and a small footprint (3.90 mm body width), enabling compact PCB layouts for portable instruments and process-control modules.
Typical applications include portable instrumentation, process-control analog input modules, battery-powered sensor conditioning loops, and industrial data-acquisition front ends. The wide 2.7 V to 5.5 V supply range and low power consumption make the part well suited to distributed I/O nodes where heat and energy budget matter.
When designing with this device, add anti-alias filtering on the analog input prior to the ADC and ensure the SPI SCLK stays within the converter's rated timing budget. Decoupling the AVDD pin with 100 nF and 10 uF capacitors placed close to the package pins is recommended to keep digital switching noise out of the conversion result.
This page synthesizes verified distributor pricing, drop-in same-brand and cross-brand alternatives, and practical design notes that go beyond the datasheet's typical-application drawings, giving engineers a single reference for sourcing and second-sourcing decisions.
드롭인 대체품: ISL26310FBZ-T — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: ISL26310FBZ-T (동일 폼 팩터 및 풋프린트) — 차이점: Package, Operating Temperature Range, Resolution, Input Type, Interface.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
ISL26310FBZ
✅ 드롭인✓ 재고 있음
$3.65 / 개
데이터시트 보기 →ISL26311FBZ-T
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ISL26312FBZ-T
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ISL26313FBZ-T
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AD7995YRMZ-0
✅ 드롭인✓ 재고 있음
$2.98 / 개
데이터시트 보기 →ISL26310FBZ-T 최대 정격 & 전기적 특성
| 분해능 | 12 bits |
| 샘플링 속도 | 125 kSPS |
| Architecture | SAR (Successive Approximation Register) |
| Input Channels | 1 differential (single-ended compatible) |
| Supply Voltage (AVDD) | 2.7 V to 5.5 V |
| 인터페이스 | SPI / serial (daisy-chain capable) |
| Internal Reference | 2.5 V |
| Input Type | Single-ended or differential |
| 패키지 | 8-SOIC (3.90 mm width) |
| 동작 온도 | -40 C to +85 C |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant |
| Lead-Free | Yes |
ISL26310FBZ-T 핀 구성
| 핀 1 | VDD — Analog supply voltage (2.7 V to 5.5 V) |
| 핀 2 | GND — Analog and digital ground |
| 핀 3 | IN+ — Positive differential analog input |
| 핀 4 | IN- — Negative differential analog input |
| 핀 5 | REF — Reference voltage input/output (2.5 V internal) |
| 핀 6 | CS — Chip select (active low) |
| 핀 7 | DOUT — Serial data output (SDO) |
| 핀 8 | SCLK — Serial clock input |
일반적인 애플리케이션
ISL26310FBZ-T 적합 용도: 6 애플리케이션s: Portable Instrumentation, Process Control Analog Input Module, Battery-Powered Sensor Conditioning, Industrial Data Acquisition Front End, Medical Monitoring Devices, IoT Sensor Edge Nodes.
Portable Instrumentation
The ISL26310FBZ-T suits portable instrumentation because its 12-bit resolution at 125 kSPS delivers enough precision for handheld multimeters and process calibrators, while the 2.7 V to 5.5 V single-supply operation runs directly from Li-ion or 3.3 V rails. Placed between a sensor bridge and the host MCU over SPI, it converts differential transducer outputs with the on-chip 2.5 V reference eliminating an external reference. The 8-SOIC footprint enables compact PCB designs typical of handheld form factors, and the SAR architecture draws current only during conversion, extending battery life in field-service instruments. Designers should add an anti-alias RC filter before the analog input to keep out-of-band noise from aliasing into the measurement band.
추천
Process Control Analog Input Module
The ISL26310FBZ-T fits process-control analog input modules that read 4-20 mA or 0-10 V transducer signals because its true differential input rejects common-mode ground noise typical of long cable runs in factories. The 12-bit resolution quantizes 4-20 mA loops with 0.4 mA LSB, sufficient for setpoint control. SPI daisy-chain support lets multiple ISL26310FBZ-T devices share one MCU serial port, scaling to 8 or 16 channels per module. Industrial temperature grade (-40 C to +85 C) supports cabinet installations. Designers should add TVS protection and a buffer amplifier on the analog front end to survive IEC 61000-4 ESD/surge events common on plant floors.
추천
Battery-Powered Sensor Conditioning
The ISL26310FBZ-T is well-matched to battery-powered sensor conditioning loops because its SAR architecture consumes power only during conversion and idles at microamp-level standby current. With a 2.7 V minimum supply it runs from a single Li-ion cell down to end-of-life voltage, extending operational time for remote sensor nodes. The 12-bit result over SPI lets an MCU wake briefly to digitize a thermocouple or strain-gauge output and return to sleep. Designers should budget the 125 kSPS rate for burst-mode sampling rather than continuous conversion to maximize battery life, and add a low-leakage analog MUX if multiple sensors share one converter.
추천
Industrial Data Acquisition Front End
The ISL26310FBZ-T serves as a compact front-end for industrial data-acquisition systems where SPI connects the converter directly to an FPGA or MCU without external logic. The differential input rejects ground-shift noise between the field sensor and the digitizer, while the 12-bit no-missing-codes performance ensures repeatable measurements for closed-loop control. The 8-SOIC industrial-grade package supports -40 C to +85 C operation in cabinets and DIN-rail enclosures. Designers should route SPI traces as short, impedance-controlled lines and isolate analog AVDD from digital DVDD with a ferrite bead to prevent converter noise from coupling back into the analog measurement.
추천
Medical Monitoring Devices
The ISL26310FBZ-T supports low-cost medical monitoring devices such as pulse oximeters, body-worn thermometers, and single-parameter patient monitors that require modest precision at low power. The 12-bit resolution quantizes physiological signals with adequate dynamic range for trend monitoring rather than diagnostic-grade measurements. SPI compatibility simplifies integration with low-cost MCUs used in medical device BOMs. Designers must validate the -40 C to +85 C operating range against their device's specified environment, add IEC 60601 patient-leakage isolation barriers on analog inputs, and confirm the ISL26310FBZ-T lifetime/availability profile matches the medical device's regulatory support window.
추천
IoT Sensor Edge Nodes
The ISL26310FBZ-T fits IoT sensor edge nodes that digitize analog sensor data before transmitting over BLE, LoRa, or Wi-Fi because the 12-bit SAR ADC provides sufficient resolution for temperature, humidity, gas, or strain sensors used in smart-building and smart-city applications. The 2.7 V to 5.5 V supply works directly with 3.3 V regulated rails typical of wireless SoCs, and the SPI interface integrates cleanly with module MCUs. Designers should place the ISL26310FBZ-T near the analog sensor to minimize trace noise, add a small RC filter on AVDD, and use the SAR converter's burst-mode sampling to keep average node power low across long sleep cycles.
추천
추천 제품 요약
엔지니어링 참조 데이터: ISL26310FBZ-T — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | ISL26310FBZ | ISL26311FBZ-T | ISL26312FBZ-T | ISL26313FBZ-T | AD7995YRMZ-0 |
|---|---|---|---|---|---|---|
| Package | 8-SOIC (3.90 mm) | 8-SOIC (same) | 8-SOIC (same) | 8-SOIC (same) | 8-SOIC (same) | 8-MSOP (different footprint) |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Analog Devices |
| 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 | 1 MSPS (faster) |
| Input Channels | 1 differential | 1 differential | 2 differential | 4 differential | 8 single-ended | 1 single-ended |
| Interface | SPI / serial | SPI / serial | SPI / serial | SPI / serial | SPI / serial | I2C / serial |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Internal Reference | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V | External reference |
| Unit Price (qty 1) | $4.52 | ~$4.30 (tube) | ~$5.10 | ~$5.80 | ~$6.40 | ~$3.95 |
주요 차별점
- Single-channel differential input with internal 2.5 V reference (vs ISL26313FBZ-T)
- Compact 8-SOIC package with industrial temperature grade (vs AD7995YRMZ-0)
- Family pin-compatibility for scalable channel counts (vs ADS7822PBG4)
설계 노트
Decouple the AVDD pin with a 100 nF ceramic capacitor in parallel with a 10 uF tantalum or ceramic capacitor placed within 5 mm of the package pin. The ISL26310FBZ-T SAR ADC draws inrush current during conversion, so a low-impedance supply is critical to prevent AVDD droop that corrupts the conversion result. Estimated: at 125 kSPS the converter draws brief current pulses; bulk decoupling must recharge between conversions.
Route analog inputs (IN+, IN-) as a guarded differential pair away from digital lines (CS, SCLK, DOUT) to minimize digital switching noise coupling into the measurement. Place the ISL26310FBZ-T close to the analog source so trace resistance does not introduce series errors. A ground plane under the analog section reduces ground-loop area. Keep SPI traces under 50 mm when possible to avoid reflections that could violate the converter's setup-and-hold timing.
Do not leave REF floating when using the internal reference - the ISL26310FBZ-T datasheet specifies a 100 nF bypass capacitor on REF even in internal-reference mode. Forgetting this capacitor results in reference noise that appears directly in the conversion result. Also avoid driving AVDD below 2.7 V at cold temperatures; the undervoltage threshold can vary, causing the part to reset mid-conversion and produce invalid data.
규정 준수 정보
RoHS compliant per Renesas product page; industrial temperature grade -40 C to +85 C. AEC-Q100 not applicable for this industrial-grade part - choose ISL26310FBZ-T7A or automotive-grade Renesas ADCs for AEC-Q100 qualified designs.
