AK9232 Datasheet, PDF (1/2 Pages) Asahi Kasei Microsystems – Dual 18/16/14-Bit 1.1MSPS ZDS A/D Converter

[AK9232/33/34]
= Preliminary = _AK9232/33/34
Dual 18/16/14-Bit 1.1MSPS ZDS A/D Converter
General Description
The AK9232/33/34 are 18/16/14-bit 1.1MSPS ZDS* A/D converters. A polar coordinate calculation
function is also integrated, and it reduces the load of DSP or microcomputer. The AK9232/33/34 are
housed in a space-saving 24-pin QFN package.
* ZDS: Zero latency Delta Sigma
A ZDS A/D converter realizes ultrafast response of SAR with 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 improve the speed and the accuracy of negative feedback system.
A ZDS A/D converter can achieve small and high accurate motor systems.
Features
 Simultaneous Sampling 18/16/14-bit ZDS A/D Converter
 Sampling Rate: 1.1MSPS
 Differential Inputs
 S/N:
88 dBFS(Typ.) at 20kHz Input (AK9232)
87 dBFS(Typ.) at 20kHz Input (AK9233)
84 dBFS(Typ.) at 20kHz Input (AK9234)
 18bit No Missing Code, INL: ±2LSB (Typ.) @Vin=-6dBFS (AK9232)
16bit No Missing Code, INL: ±1LSB (Typ.) @Vin=-6dBFS (AK9233)
14bit No Missing Code, INL: ±0.5LSB (Typ.) @Vin=-6dBFS (AK9234)
 Polar coordinate calculation function
 Offset/Gain adjustment function
 Power Consumption:100mW/ch (fs= 1.1MSPS, VDD=1.8V, HVDD=5V,DRVDD=3V)
 Power Supply: VDD : 1.7 ~ 2.0V
HVDD: 4.75 ~ 5.25V
DRVDD: 2.7 ~ 5.25V
 Operational Temperature Range (Ta): -40 ~ 105ºC
 Small Package: 24-pin QFN (4mm x 4mm)
Rev. 0.5
Figure 1. Block Diagram
2015/7