Maxim sætter fuld fart på 20-bit SAR A/D konvertere
Med en ny generation af lynhurtige 20-bit SAR A/D konvertere fra Maxim bliver det muligt at reducere effektforbruget med 91 procent og samtidig reducere boardarealet med 50 procent i forhold til diskrete konverter-implementeringer (in english).
Engineers can achieve the industry’s highest resolution and fastest sampling rate at the lowest power with the MAX11905, a 20-bit, 1.6Msps successive approximation register (SAR) analog-to-digital converter (ADC) from Maxim Integrated Products.Typically, when engineers require high-precision data conversion, they turn to a delta-sigma ADC. However, to produce high precision and wide dynamic range, those ADCs must consume at least 100mW of power.
In contrast, the MAX11905 SAR ADC consumes only 9mW – a 91% power savings. With this power savings comes very high (20-bit) precision and the fastest sampling (1.6Msps) rate available. The MAX11905 also integrates internal reference buffers, which reduces cost and time to market, and saves up to 50% space compared to competitive discrete solutions. With this versatility, the MAX11905 is ideal for a wide range of applications, including process control, automatic test equipment, medical instrumentation, and battery-powered devices.
- In the past, engineers used 24-bit delta-sigma ADCs to achieve fast acquisition with low noise and distortion. With the MAX11905 SAR ADC, you can reach ultra-low-noise, ultra-low THD with low offset and gain drift, but now at less than 1/10 the power consumption and no settling time limitations, says Carmelo Morello, Senior Business Manager at Maxim Integrated.
Key advantages include:
• High speed: the MAX11905 enables 1.6Msps throughout with no latency and settling time limitation.
• High performance: the ADC achieves 98.3dB signal-to-noise ratio (SNR) and -123dB THD*); improves static and dynamic performance; guarantees monotonic function; and provides best-in-class power consumption.
• Versatility: the SAR ADC delivers high 20-bit resolution with no missing codes, at 1.6Msps of speed, at 9mW of power, enabling flexibility in designs without compromises.
• Simplified designs: the MAX11905 integrates internal reference buffers, reducing design time and cost.
