AK9243NK中文资料AFE with Dual 14-Bit 1.1MSPS ZDS A/D Converter数据手册AKM规格书

描述 Description

The AK9243NK is an analog front end that is optimized for high resolution encoders. ZDS A/D converter AK9243NK integrates 2-channel simultaneous sampling A/D converter, a programmable gain amplifier (PGA) and a transimpedance amplifier for current input in a small 4mm x 4mm QFN package. Current / Voltage input for the AK9243 can be selected. In addition, it has polar coordinates output function (angle calculation algorithm). The AK9243NK realizes 14-bit resolution while supporting the sampling rate up to 1.1MHz. A small high accuracy encoder can easily be designed with the AK9243NK. A pin compatible lineup, the AK9242NK (16-bit) is also available.
(*) ZDS: Zero Latency Delta SigmaA ZDS A/D converter realizes ultrafast response of SAR while maintaining high accuracy conversion like a delta-sigma converter, based on AKM’s accumulated experience and know-how in analog-digital LSI technology. It contributes to improving the speed and the accuracy of negative feedback circuits. It has long acquisition time comparing with an SAR A/D converter, reducing input buffer load of the IC. Small and high accurate motor systems can be designed with a ZDS A/D converter.

特性 Features

● AK9243NK | Analog Front End with 2ch 14 bit 1.1MHz ZDS A/D Converter·　Product Name；　AK9242NK　Analog Front End with ZDS A/D Converter；　AK9243NK　Analog Front End with ZDS A/D Converter；
· Resolution；　16-bit；　14-bit；
· S/N；　81dB(Typ.) at 10kHz Input；　80dB(Typ.) at 10kHz Input；
· Integral Nonlinearity (INL)；　±2 LSB (Typ.) @ Vin=-6dBFS；　±1 LSB (Typ.) @ Vin=-6dBFS；
· Differential Nonlinearity (DNL)；　No Missing Code；
· Number of Channel；　2ch (Simultaneous Sampling)；
· Input Format；　Differential Input；
· Function；　Transimpedance Amplifier for Current Input　Programmable Gain Amplifier (14-35dB, 3dB step)　Polar Coordinates Output Function (angle calculation algorithm)　Offset/Gain Adjustment Function　Bandwidth Limit Filter；
· Power Consumption；　505mW (fs=1.1MSPS, HVDD= 5V,DRVDD=3V)；
· Power Supply；　HVDD: 4.75 to 5.25V　　DRVDD: 2.7 to 5.25V；
· Operational Temperature Range：　-40~105°C ；
· Package：　Ultra Small Package 24-pin QFN (4mm x 4mm)；