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Главная/Прочие/ADC/AD7689

AD7689

Analog DevicesNeeds adaptationQFN-20

Аналоги и замены (1)

OEM part number

AD7689

Analog Devices

Прочие · ADC

CN part number

RS1438

Run-IC

Прочие · ADC

Needs adaptationPartialQFN-20
16-bitmulti-channel ADCSPI interface

Комментарии об отличиях

AD7689 ↔ RS1438

AD7689 (ADI) — QFN-20 (4x4mm), 16-bit, 8-channel (pseudo-differential), 250kSPS throughput, SPI, internal reference 4.096V, input range 0-Vref, power 13mW @ 2.5V. RS1438 (Run-IC) — QFN-20, 16-bit ADC, аналогичный функционал. Отличия: (1) throughput: AD7689 250kSPS, RS1438 — проверить (обычно 100-200kSPS для китайских аналогов); (2) INL: AD7689 ±1 LSB typical, RS1438 — ±2-3 LSB; (3) SNR: AD7689 93dB, RS1438 — ~80-85dB; (4) internal reference: AD7689 4.096V ±5ppm/°C, RS1438 — проверить drift (обычно 20-50ppm/°C); (5) power consumption: AD7689 1.5mA @ 2.5V, RS1438 — 2-3mA. Для precision measurement (<0.01%) — требуется калибровка. Для general-purpose DAQ — рабочая замена. Проверить SPI timing и register map.

Информация предоставлена в справочных целях. Перед внедрением любого аналога обязательно сверьте технические характеристики, температурные режимы и сертификаты безопасности в актуальных даташитах производителей. Ответственность за финальный выбор компонента и его применение несёт инженер.