ISL26708IHZ-T7A - 8-Bit 1MSPS SAR ADC | Renesas | SOT-23-8
Артикул: ISL26708IHZ-T7A ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $1.76 | $1,76 |
| 10 | $1.58 | $15,80 |
| 100 | $1.32 | $132,00 |
| 500 | $1.1 | $550,00 |
| 1.000 | $0.92 | $920,00 |
| 3.000 | $0.78 | $2.340,00 |
ISL26708IHZ-T7A Обзор
A SAR ADC is a type of analog-to-digital converter that uses a binary-search algorithm through an internal capacitive DAC to successively approximate the input voltage against a precision reference. SAR ADCs offer the best combination of throughput, latency, and power consumption for multiplexed data acquisition, motor control, and instrumentation front-ends where a single conversion result must be captured per trigger without the pipeline delay of higher-speed architectures.
Key features of the ISL26708IHZ-T7A include 1 MSPS minimum throughput, no missing codes at 8-bit resolution, low power consumption (approximately 8.5 mW at 1 MSPS with 5V supply), a SPI/QSPI/MICROWIRE-compatible serial interface, and a true-differential analog input that supports ±VREF common-mode. An external reference voltage (1V to 5V) sets the input full-scale range, giving designers flexibility to optimize dynamic range.
The robust input structure, wide supply tolerance, and small SOT-23-8 footprint make the ISL26708IHZ-T7A well-suited for portable instrumentation, industrial process control loops, sensor signal conditioning, and battery-monitoring front-ends. Its differential input rejects common-mode noise present in long sensor cable runs.
When designing with this device, place the 0.1 uF and 10 uF decoupling capacitors as close as possible to the AVDD and DVDD pins to ensure conversion accuracy, and route the analog and digital ground returns to a single-point star ground near the ADC's GND pin to avoid digital switching noise coupling into the analog input.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Аналоги без доработки для ISL26708IHZ-T7A — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с ISL26708IHZ-T7A (тот же форм-фактор и посадочное место) — отличается по Input Type, Package, Resolution, RoHS Status, Sampling Rate.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
ISL26710IHZ-T7A
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ISL26712IHZ-T7A
✅ Прямая замена✓ В наличии
$2.85 / шт.
Открыть даташит →ISL26708IHZ-T7A Максимальные параметры и электрические характеристики
| Разрешение | 8 bits |
| Частота дискретизации | 1 MSPS (minimum) |
| Architecture | SAR (Successive Approximation Register) |
| Number of Channels | 1 (single-ended or pseudo-differential) |
| Analog Supply Voltage (AVDD) | 2.7 V to 5.25 V |
| Digital Supply Voltage (DVDD) | 2.7 V to 5.25 V |
| Input Type | Fully-differential (true bipolar capable) |
| Опорное напряжение | External, 1 V to AVDD |
| Power Consumption | 8.5 mW typical at 1 MSPS (5V supply) |
| Digital Interface | SPI / QSPI / MICROWIRE-compatible serial |
| Рабочая температура | -40C to +85C (Industrial) |
| Корпус | 8-pin SOT-23 (IHZ) |
| Тип монтажа | Surface Mount |
| Статус RoHS | Compliant |
| Lead-Free | Yes |
| Без галогенов | Yes |
Конфигурация выводов ISL26708IHZ-T7A
| Контакт 1 | AVDD — Analog supply voltage (2.7V to 5.25V) |
| Контакт 2 | REF — External reference voltage input |
| Контакт 3 | IN+ — Positive differential analog input |
| Контакт 4 | IN- — Negative differential analog input |
| Контакт 5 | GND — Ground |
| Контакт 6 | SDO — Serial data output |
| Контакт 7 | SCLK — Serial clock input |
| Контакт 8 | CNVT — Conversion start / active-low chip select |
Типичное применение
ISL26708IHZ-T7A подходит для 6 применениеs: Industrial Process Control Sensor Front-End, Battery Management Monitoring, Portable Instrumentation Data Acquisition, Motor Control Current Sensing, Audio Signal Digitization, IoT Sensor Node ADC.
Industrial Process Control Sensor Front-End
The ISL26708IHZ-T7A's fully-differential input rejects common-mode noise present on long sensor cable runs in factory environments, while its 1 MSPS throughput supports fast process-control loop times. The device operates from 2.7V to 5.25V, accepting either 3.3V or 5V sensor rails. The wide industrial -40C to +85C temperature range and 8-bit resolution are appropriate for monitoring strain-gauge bridges, thermocouples, and 4-20 mA loop receivers where high dynamic range is unnecessary but reliable conversion is essential.
Рекомендуется
Battery Management Monitoring
The ISL26708IHZ-T7A's low power consumption of 8.5 mW at 1 MSPS makes it suitable for battery-cell voltage monitoring in multi-cell battery packs. The differential input tolerates ground-shift noise between stacked cells, and the SPI-compatible serial interface requires only 3 microcontroller GPIO pins. The 8-bit resolution provides 20 mV steps on a 5V reference, sufficient for battery state-of-charge estimation in consumer and light-industrial battery management systems.
Рекомендуется
Portable Instrumentation Data Acquisition
The ISL26708IHZ-T7A's small SOT-23-8 footprint and low 8.5 mW power dissipation make it ideal for handheld multimeters, portable oscilloscopes, and field-test instruments. The 1 MSPS throughput enables capture of audio-bandwidth and low-RF signals, while the differential input rejects hum pickup on probe leads. An external 2.5V or 5V reference can be selected to trade input range for absolute accuracy depending on the measurement being made.
Рекомендуется
Motor Control Current Sensing
In brushless-DC and stepper motor drives, the ISL26708IHZ-T7A digitizes shunt-resistor voltage drops with 1 MSPS throughput for current-loop control. The differential input accepts the bipolar voltage across a low-side or high-side shunt, and the fast conversion rate supports PWM frequencies up to 50 kHz with 20 samples per PWM cycle. The SOT-23-8 package allows placement close to the shunt resistor for noise immunity.
Рекомендуется
Audio Signal Digitization
The ISL26708IHZ-T7A's 1 MSPS sampling rate supports audio-bandwidth digitization up to 40 kHz with Nyquist-compliant sampling. The 8-bit resolution is sufficient for voice-band applications, simple audio mixers, and consumer audio effects. The differential input accepts line-level audio signals directly when paired with a 2.5V reference, eliminating the need for an external instrumentation amplifier in cost-sensitive designs.
Рекомендуется
IoT Sensor Node ADC
The ISL26708IHZ-T7A's serial SPI interface and small SOT-23-8 footprint suit it to space-constrained IoT sensor nodes reading temperature, light, or gas-sensor analog outputs. Power-down current between conversions drops the consumption to microamp levels, enabling battery lifetimes of years on coin cells. The 8-bit resolution is adequate for threshold-based alerts and coarse measurements where the MCU performs additional digital filtering.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для ISL26708IHZ-T7A — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | ISL26710IHZ-T7A | ISL26712IHZ-T7A |
|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | SOT-23-8 | SOT-23-8 - same | SOT-23-8 - same |
| Resolution | 8 bits | 10 bits | 12 bits |
| Sampling Rate | 1 MSPS | 1 MSPS | 1 MSPS |
| Architecture | SAR | SAR | SAR |
| Input Type | Fully differential | Fully differential | Fully differential |
| Supply Voltage | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C |
| Pin-to-Pin Compatible | Yes (this part) | Yes | Yes |
Ключевые отличия
- True fully-differential input (против Single-ended SAR ADCs in SOT-23 packages)
- Family-compatible upgrade path (против Fixed-resolution 8-bit competitor ADCs)
- Wide 2.7V to 5.25V supply range (против 3.3V-only competitor ADCs)
Заметки по проектированию
Place a 0.1 uF ceramic decoupling capacitor as close as possible to the AVDD pin (pin 1), with a 10 uF tantalum or ceramic bulk capacitor within a few millimeters. The DVDD pin typically shares the same supply but benefits from its own 0.1 uF bypass cap to isolate digital switching noise from the analog supply. Star-ground the analog and digital returns to the GND pin (pin 5) to prevent digital return currents from flowing through the analog ground reference.
Route the differential analog inputs (IN+ and IN-, pins 3 and 4) as a matched-length, matched-impedance pair to preserve common-mode rejection at high frequencies. Keep the analog input traces away from the serial interface lines (SDO, SCLK, CNVT) and from switching power converters. Place the external reference decoupling capacitor (typically 10 uF) directly at the REF pin (pin 2) with a short, low-inductance trace to GND.
Do not leave the CNVT pin (pin 8) floating - it must be driven high or low by the host microcontroller. Failing to fully decouple AVDD will result in degraded INL/DNL and reduced SNR. The external reference voltage (REF) sets the input full-scale range: VFS = 2 x VREF for differential inputs. Exceeding VREF + 0.3V on the analog inputs will damage the device. The serial clock SCLK should not exceed 20 MHz.
Информация о соответствии
RoHS and REACH compliant per Renesas product page. Industrial temperature grade -40C to +85C. Not AEC-Q100 qualified - choose a Q1 suffix variant for automotive applications if available.
