AFE4490RHAT, ANALOGUE FRONT END, PULSE OXIMETER, VQFN

PartNumber: AFE4490RHAT
Ном. номер: 8072466732
Производитель: Texas Instruments
AFE4490RHAT, ANALOGUE FRONT END ...
Доступно на заказ 205 шт. Отгрузка со склада в Москве 7 недель.
1 410 × = 1 410
от 10 шт. — 1 160 руб.
от 100 шт. — 1 060 руб.

Описание

The AFE4490RHAT is a fully-integrated Analog Front End that is ideally suited for pulse-oximeter applications. The device consists of a low-noise receiver channel with a 22-bit analog-to-digital converter (ADC), an LED transmit section and diagnostics for sensor and LED fault detection. The device is a very configurable timing controller. This flexibility enables the user to have complete control of the device timing characteristics. To ease clocking requirements and provide a low-jitter clock to the device, an oscillator is also integrated that functions from an external crystal. The device communicates to an external microcontroller or host processor using an SPI™ interface.

• Flexible pulse sequencing and timing control
• Transmit - Integrated LED driver (H-Bridge, Push or Pull)
• Transmit - 110dB Dynamic range across full range (Enables low noise at low LED current)
• Transmit - Programmable ranges of 50mA, 75mA 100mA, 150mA and 200mA, with 8-bit current resolution
• Transmit - LED on-time programmability from (50µs + Settle Time) to 4ms
• Transmit - Independent LED2, LED1 current reference
• Receive channel with high dynamic range
• Receive - 50pARMS (at 5µA PD Current) Input-referred noise
• Receive - 13.5 Noise-free bits (at 5µA PD Current)
• Receive - Analog ambient cancellation scheme with selectable 1 to 10µA Ambient current
• Receive - 50µs to 4ms Rx Sample time
• Receive - I-V Amplifier with seven separate LED2 and LED1 programmable feedback R and C settings
• Receive - Integrated digital ambient estimation and subtraction
• Integrated fault diagnostics - Photodiode and LED Open/Short detection, Cable ON or OFF detection

Полупроводники - Микросхемы\Специальные Функции
Код: 2496175

Технические параметры

Функция Микросхемы
Аналоговое Устройство Front End
Минимальное Напряжение Питания
Максимальное Напряжение Питания
5.25В
Тип Корпуса ИС
VQFN
Количество Выводов
40вывод(-ов)
Минимальная Рабочая Температура
-40°C
Максимальная Рабочая Температура
85°C
Упаковка
Поштучно
Уровень Чувствительности к Влажности (MSL)
MSL 3 - 168 часов