AK9234NK数据手册集成电路（IC）的模数转换器（ADC）规格书PDF

描述 Description

ZDS A/D converter AK9234NK integrates 2-channel circuits in a small 4mm x 4mm package enabling simultaneous sampling and saving board space.
The AK9234NK realizes 14-bit resolution while supporting the sampling rate up to 1.1MHz. In addition, it has polar coordinates output function (angle calculation algorithm); a small high accuracy encoder can easily be designed.



(*) ZDS: Zero Latency Delta Sigma
A 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

● AK9234NK |  2ch 14 bit 1.1MHz ZDS A/D Converter ·　Product Name；　AK9232NK　ZDS A/D Converter：　AK9233NK　ZDS A/D Converter：　AK9234NK　ZDS A/D Converter；
· Resolution：　18-bit；　16-bit；　14-bit；
· S/N；　88dB (Typ.) at 20kHz Input；　87dB (Typ.) at 20kHz Input；　84dB (Typ.) at 20kHz Input；
· Integral Nonlinearity (INL)；　±2 LSB (Typ.) @ Vin=-6dBFS；　±1 LSB (Typ.) @ Vin=-6dBFS；　±0.5 LSB (Typ.) @ Vin=-6dBFS；
· Differential Nonlinearity (DNL)；　No Missing Code；
· Samling Rate；　1.1MSPS ；
· Number of Channel；　2ch (Simultaneous Sampling)；
· Input Format：　Differential Input；
· Function：　Polar Coordinates Output Function (angle calculation algorithm)    Offset/Gain Adjustment Function；
· Power Consumption：　200mW (fs=1.1MSPS, VDD=1.8V, HVDD= 5V,DRVDD=3V)；
· Power Supply：　VDD: 1.7 to 2.0V　　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)；

应用 Application

High speed and high accuracy in negative feedback system