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AK9242 Datasheet, PDF (1/2 Pages) Asahi Kasei Microsystems – AFE with Dual 16/14-Bit 1.1MSPS ZDS A/D Converter | |||
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[AK9242/43]
= Preliminary =
AK9242/43
AFE with Dual 16/14-Bit 1.1MSPS ZDS A/D Converter
General Description
The AK9242/43 are Analog Front Ends with 16/14-bit 1.1MSPS ZDS* A/D converters. They integrate a
programmable gain amplifier (PGA) that is able to select the input current and the input voltage realizing
to control the input range. A polar coordinate calculation function is also integrated, and it reduces the
load of DSP or microcomputer. The AK9242/43 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 AKMâs 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
ï¨ Simultaneous Sampling 16/14-bit ZDS A/D Converter
ï¨ Sampling Rate: 1.1MSPS
ï¨ Differential Inputs
ï¨ Current Input or Voltage Input Selectable
ï¨ PGA Function
ï¨ Low Pass Filter
ï¨ S/N:
81 dBFS (Typ.) at 10kHz Input (AK9242)
80 dBFS (Typ.) at 10kHz Input (AK9243)
ï¨ 16bit No Missing Code, INL: ±2LSB (Typ.)
(AK9242)
14bit No Missing Code, INL: ±1LSB (Typ.)
ï¨ Polar coordinate calculation function
(AK9243)
ï¨ Offset/Gain adjustment function
ï¨ Power Consumption: 253mW/ch (fs= 1.1MSPS, HVDD=5V,DRVDD=3V)
ï¨ Power Supply: HVDD: 4.75 ~ 5.25V
DRVDD: 2.7 ~ 5.25V
ï¨ Operational Temperature Range (Ta): -40 ~ 105ºC
ï¨ Small Package: 24-pin QFN (4mm x 4mm)
Rev. 0.3
Figure 1. Block Diagram
2015/7
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