AK9242NK

MP

AFE with Dual 16-Bit 1.1MSPS ZDS A/D Converter

AFE with Dual 16-Bit 1.1MSPS ZDS A/D Converter

MP

Description

The AK9242NK is an analog front end that is optimized for high resolution encoders. 
ZDS A/D converter AK9242NK 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 AK9242NK can be selected. In addition, it has polar coordinates output function (angle calculation algorithm). 
The AK9242NK realizes 16-bit resolution while supporting the sampling rate up to 1.1MHz. A small high accuracy encoder can easily be designed with the AK9242NK. A pin compatible lineup, the AK9243NK (14-bit) is also available.
(*) 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.

Applications

  •                                 High speed and high accuracy in negative feedback system
                                

Specifications

Part Number AK9242NK
Number of Channels 2
Resolution [bit] 16
Speed [MSPS] 1.1
Power Supply Voltage (MIN.) [V] 4.2 / 2.7
Power Supply Voltage (TYP.) [V] 5.0 / 3.0
Power Supply Voltage (MAX.) [V] 5.5 / 5.5
Power Consumption [mW] 505
Control Interface SPI
Package Size [mm(mm2)] 4×4 (16)
Other
Operating Temperature [℃] -40 to 105
Device Package HWQFN
Number of Pins 24

Product Information

Part Status MP
Pb Free Yes
Halogen Free Yes
MSL MSL2
Packaging TAPE
JEDEC Standard Packaging Compliant
Minimum Order Quantity [pcs.] 1000
Recommended Order Quantity 1 [pcs.] 12000
Recommended Order Quantity 2 [pcs.] 2000
Standard Packing Quantity [pcs.] 1000
Replacement P/N

Block Diagram

Block Diagram